radar: pass 38 — migration plan DRAFTED (5 specs + open-questions); decision point: review + start implementation loop? branch stays local

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

lib/apl/conformance.conf

@@ -0,0 +1,63 @@
+# APL conformance config — sourced by lib/guest/conformance.sh.
+
+LANG_NAME=apl
+MODE=counters
+COUNTERS_PASS=apl-test-pass
+COUNTERS_FAIL=apl-test-fail
+TIMEOUT_PER_SUITE=300
+
+PRELOADS=(
+  spec/stdlib.sx
+  lib/r7rs.sx
+  lib/apl/runtime.sx
+  lib/apl/tokenizer.sx
+  lib/apl/parser.sx
+  lib/apl/transpile.sx
+  lib/apl/test-harness.sx
+)
+
+SUITES=(
+  "structural:lib/apl/tests/structural.sx"
+  "operators:lib/apl/tests/operators.sx"
+  "dfn:lib/apl/tests/dfn.sx"
+  "tradfn:lib/apl/tests/tradfn.sx"
+  "valence:lib/apl/tests/valence.sx"
+  "programs:lib/apl/tests/programs.sx"
+  "system:lib/apl/tests/system.sx"
+  "idioms:lib/apl/tests/idioms.sx"
+  "eval-ops:lib/apl/tests/eval-ops.sx"
+  "pipeline:lib/apl/tests/pipeline.sx"
+)
+
+emit_scoreboard_json() {
+  local n=${#GC_NAMES[@]} i sep
+  printf '{\n'
+  printf '  "suites": {\n'
+  for ((i=0; i<n; i++)); do
+    sep=","; [ $i -eq $((n-1)) ] && sep=""
+    printf '    "%s": {"pass": %d, "fail": %d}%s\n' \
+      "${GC_NAMES[$i]}" "${GC_PASS[$i]}" "${GC_FAIL[$i]}" "$sep"
+  done
+  printf '  },\n'
+  printf '  "total_pass": %d,\n' "$GC_TOTAL_PASS"
+  printf '  "total_fail": %d,\n' "$GC_TOTAL_FAIL"
+  printf '  "total": %d\n' "$GC_TOTAL"
+  printf '}\n'
+}
+
+emit_scoreboard_md() {
+  local n=${#GC_NAMES[@]} i
+  printf '# APL Conformance Scoreboard\n\n'
+  printf '_Generated by `lib/apl/conformance.sh`_\n\n'
+  printf '| Suite | Pass | Fail | Total |\n'
+  printf '|-------|-----:|-----:|------:|\n'
+  for ((i=0; i<n; i++)); do
+    printf '| %s | %d | %d | %d |\n' \
+      "${GC_NAMES[$i]}" "${GC_PASS[$i]}" "${GC_FAIL[$i]}" "${GC_TOTAL_S[$i]}"
+  done
+  printf '| **Total** | **%d** | **%d** | **%d** |\n' "$GC_TOTAL_PASS" "$GC_TOTAL_FAIL" "$GC_TOTAL"
+  printf '\n'
+  printf '## Notes\n\n'
+  printf '%s\n' '- Suites use the standard `apl-test name got expected` framework loaded against `lib/apl/runtime.sx` + `lib/apl/transpile.sx`.'
+  printf '%s\n' '- `lib/apl/tests/parse.sx` and `lib/apl/tests/scalar.sx` use their own self-contained frameworks and are excluded from this scoreboard.'
+}

lib/apl/conformance.sh

@@ -1,116 +1,5 @@
 #!/usr/bin/env bash
-# lib/apl/conformance.sh — run APL test suites, emit scoreboard.json + scoreboard.md.
+# lib/apl/conformance.sh — APL conformance via the shared guest driver.
-
+# Config lives in lib/apl/conformance.conf (MODE=counters). Override the binary
-set -uo pipefail
+# with SX_SERVER=path/to/sx_server.exe bash lib/apl/conformance.sh
-cd "$(git rev-parse --show-toplevel)"
+exec bash "$(dirname "$0")/../guest/conformance.sh" "$(dirname "$0")/conformance.conf" "$@"
-
-SX_SERVER="${SX_SERVER:-/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe}"
-if [ ! -x "$SX_SERVER" ]; then
-  SX_SERVER="hosts/ocaml/_build/default/bin/sx_server.exe"
-fi
-if [ ! -x "$SX_SERVER" ]; then
-  echo "ERROR: sx_server.exe not found." >&2
-  exit 1
-fi
-
-SUITES=(structural operators dfn tradfn valence programs system idioms eval-ops pipeline)
-
-OUT_JSON="lib/apl/scoreboard.json"
-OUT_MD="lib/apl/scoreboard.md"
-
-run_suite() {
-  local suite=$1
-  local file="lib/apl/tests/${suite}.sx"
-  local TMP
-  TMP=$(mktemp)
-  cat > "$TMP" << EPOCHS
-(epoch 1)
-(load "spec/stdlib.sx")
-(load "lib/r7rs.sx")
-(load "lib/apl/runtime.sx")
-(load "lib/apl/tokenizer.sx")
-(load "lib/apl/parser.sx")
-(load "lib/apl/transpile.sx")
-(epoch 2)
-(eval "(define apl-test-pass 0)")
-(eval "(define apl-test-fail 0)")
-(eval "(define apl-test (fn (name got expected) (if (= got expected) (set! apl-test-pass (+ apl-test-pass 1)) (set! apl-test-fail (+ apl-test-fail 1)))))")
-(epoch 3)
-(load "${file}")
-(epoch 4)
-(eval "(list apl-test-pass apl-test-fail)")
-EPOCHS
-
-  local OUTPUT
-  OUTPUT=$(timeout 300 "$SX_SERVER" < "$TMP" 2>/dev/null)
-  rm -f "$TMP"
-
-  local LINE
-  LINE=$(echo "$OUTPUT" | awk '/^\(ok-len 4 / {getline; print; exit}')
-  if [ -z "$LINE" ]; then
-    LINE=$(echo "$OUTPUT" | grep -E '^\(ok 4 \([0-9]+ [0-9]+\)\)' | tail -1 \
-            | sed -E 's/^\(ok 4 //; s/\)$//')
-  fi
-
-  local P F
-  P=$(echo "$LINE" | sed -E 's/^\(([0-9]+) ([0-9]+)\).*/\1/')
-  F=$(echo "$LINE" | sed -E 's/^\(([0-9]+) ([0-9]+)\).*/\2/')
-  P=${P:-0}
-  F=${F:-0}
-  echo "${P} ${F}"
-}
-
-declare -A SUITE_PASS
-declare -A SUITE_FAIL
-TOTAL_PASS=0
-TOTAL_FAIL=0
-
-echo "Running APL conformance suite..." >&2
-for s in "${SUITES[@]}"; do
-  read -r p f < <(run_suite "$s")
-  SUITE_PASS[$s]=$p
-  SUITE_FAIL[$s]=$f
-  TOTAL_PASS=$((TOTAL_PASS + p))
-  TOTAL_FAIL=$((TOTAL_FAIL + f))
-  printf "  %-12s %d/%d\n" "$s" "$p" "$((p+f))" >&2
-done
-
-# scoreboard.json
-{
-  printf '{\n'
-  printf '  "suites": {\n'
-  first=1
-  for s in "${SUITES[@]}"; do
-    if [ $first -eq 0 ]; then printf ',\n'; fi
-    printf '    "%s": {"pass": %d, "fail": %d}' "$s" "${SUITE_PASS[$s]}" "${SUITE_FAIL[$s]}"
-    first=0
-  done
-  printf '\n  },\n'
-  printf '  "total_pass": %d,\n' "$TOTAL_PASS"
-  printf '  "total_fail": %d,\n' "$TOTAL_FAIL"
-  printf '  "total": %d\n' "$((TOTAL_PASS + TOTAL_FAIL))"
-  printf '}\n'
-} > "$OUT_JSON"
-
-# scoreboard.md
-{
-  printf '# APL Conformance Scoreboard\n\n'
-  printf '_Generated by `lib/apl/conformance.sh`_\n\n'
-  printf '| Suite | Pass | Fail | Total |\n'
-  printf '|-------|-----:|-----:|------:|\n'
-  for s in "${SUITES[@]}"; do
-    p=${SUITE_PASS[$s]}
-    f=${SUITE_FAIL[$s]}
-    printf '| %s | %d | %d | %d |\n' "$s" "$p" "$f" "$((p+f))"
-  done
-  printf '| **Total** | **%d** | **%d** | **%d** |\n' "$TOTAL_PASS" "$TOTAL_FAIL" "$((TOTAL_PASS + TOTAL_FAIL))"
-  printf '\n'
-  printf '## Notes\n\n'
-  printf '%s\n' '- Suites use the standard `apl-test name got expected` framework loaded against `lib/apl/runtime.sx` + `lib/apl/transpile.sx`.'
-  printf '%s\n' '- `lib/apl/tests/parse.sx` and `lib/apl/tests/scalar.sx` use their own self-contained frameworks and are excluded from this scoreboard.'
-} > "$OUT_MD"
-
-echo "Wrote $OUT_JSON and $OUT_MD" >&2
-echo "Total: $TOTAL_PASS pass, $TOTAL_FAIL fail" >&2
-
-[ "$TOTAL_FAIL" -eq 0 ]

lib/apl/scoreboard.json

@@ -9,9 +9,9 @@
     "system": {"pass": 13, "fail": 0},
     "idioms": {"pass": 64, "fail": 0},
     "eval-ops": {"pass": 14, "fail": 0},
-    "pipeline": {"pass": 40, "fail": 0}
+    "pipeline": {"pass": 152, "fail": 0}
   },
-  "total_pass": 450,
+  "total_pass": 562,
   "total_fail": 0,
-  "total": 450
+  "total": 562
 }

lib/apl/scoreboard.md

@@ -13,8 +13,8 @@ _Generated by `lib/apl/conformance.sh`_
 | system | 13 | 0 | 13 |
 | idioms | 64 | 0 | 64 |
 | eval-ops | 14 | 0 | 14 |
-| pipeline | 40 | 0 | 40 |
+| pipeline | 152 | 0 | 152 |
-| **Total** | **450** | **0** | **450** |
+| **Total** | **562** | **0** | **562** |
 
 ## Notes
 

lib/apl/test-harness.sx

@@ -0,0 +1,15 @@
+; lib/apl/test-harness.sx — counters + assertion fn for the shared conformance
+; driver (lib/guest/conformance.sh, MODE=counters). Loaded as a PRELOAD so each
+; suite starts from a fresh 0/0; suites call (apl-test name got expected).
+
+(define apl-test-pass 0)
+(define apl-test-fail 0)
+
+(define
+  apl-test
+  (fn
+    (name got expected)
+    (if
+      (= got expected)
+      (set! apl-test-pass (+ apl-test-pass 1))
+      (set! apl-test-fail (+ apl-test-fail 1)))))

lib/feed/acl.sx

@@ -0,0 +1,38 @@
+; feed/acl — per-viewer visibility filtering. The same candidate stream yields
+; different timelines for different viewers, so ACL is applied per request and
+; pre-ACL timelines are never cached.
+;
+; permit? is injected: (permit? viewer activity) -> bool. Wire a real acl-sx
+; predicate here; feed/permit-acl? is a self-contained default that reads an
+; optional :visible-to allowlist on the activity.
+;
+; Requires: lib/feed/normalize.sx, lib/feed/stream.sx, lib/feed/fanout.sx
+; (feed/-elem?), lib/feed/rank.sx (feed/top).
+
+; default permit: actor always sees own activity; absent/nil :visible-to is
+; public; otherwise viewer must be in the allowlist.
+(define
+  feed/permit-acl?
+  (fn
+    (viewer a)
+    (or
+      (equal? viewer (get a :actor))
+      (let
+        ((allowed (get a :visible-to nil)))
+        (if (= allowed nil) true (feed/-elem? viewer allowed))))))
+
+(define feed/permit-public? (fn (viewer a) true))
+
+; filter a stream to what viewer may read
+(define
+  feed/visible
+  (fn
+    (stream viewer permit?)
+    (feed/filter stream (fn (a) (permit? viewer a)))))
+
+; the capstone: candidate stream -> ACL for viewer -> rank -> top-N
+(define
+  feed/timeline
+  (fn
+    (stream viewer permit? score-fn n)
+    (feed/top (feed/visible stream viewer permit?) score-fn n)))

lib/feed/aggregate.sx

@@ -0,0 +1,62 @@
+; feed/aggregate — group-by / counting via key-reduce. Keys must be strings
+; (dict keys), so composite keys (actor, day) are joined into one string.
+;
+; Requires: lib/feed/normalize.sx, lib/feed/stream.sx.
+
+; group activities into a dict: key-string -> (list of activities), order-preserving
+(define
+  feed/group-by
+  (fn
+    (stream key-fn)
+    (reduce
+      (fn
+        (g a)
+        (let
+          ((k (key-fn a)))
+          (assoc g k (append (get g k (list)) (list a)))))
+      {}
+      (feed/items stream))))
+
+; key-string -> count
+(define
+  feed/group-count
+  (fn
+    (stream key-fn)
+    (reduce
+      (fn
+        (g a)
+        (let
+          ((k (key-fn a)))
+          (assoc g k (+ (get g k 0) 1))))
+      {}
+      (feed/items stream))))
+
+; --- composite keys ---------------------------------------------------------
+
+(define feed/day (fn (at window) (floor (/ at window))))
+
+; (actor, day-bucket) -> "actor#day"
+(define
+  feed/actor-day-key
+  (fn
+    (window)
+    (fn
+      (a)
+      (string-append
+        (get a :actor)
+        "#"
+        (number->string (feed/day (get a :at) window))))))
+
+(define
+  feed/by-actor-day
+  (fn (stream window) (feed/group-count stream (feed/actor-day-key window))))
+
+; per-actor activity counts
+(define
+  feed/actor-counts
+  (fn (stream) (feed/group-count stream feed/actor)))
+
+; per-object activity counts (engagement)
+(define
+  feed/object-counts
+  (fn (stream) (feed/group-count stream feed/object)))

lib/feed/api.sx

@@ -0,0 +1,24 @@
+; feed/api — ergonomic API over the stream layer for non-APL callers.
+; A single mutable activity log; post appends, all returns it as a stream.
+;
+; Requires: lib/feed/normalize.sx, lib/feed/stream.sx (loaded by harness).
+
+(define feed/-log (list))
+
+; post — normalize then append. Returns the stored activity.
+(define
+  feed/post
+  (fn
+    (raw)
+    (let
+      ((a (feed/normalize raw)))
+      (begin (set! feed/-log (append feed/-log (list a))) a))))
+
+; all — the whole log as a stream (insertion order)
+(define feed/all (fn () (feed/stream feed/-log)))
+
+; reset! — clear the log (test hygiene)
+(define feed/reset! (fn () (begin (set! feed/-log (list)) nil)))
+
+; size — number of posted activities
+(define feed/size (fn () (len feed/-log)))

lib/feed/conformance.sh

@@ -0,0 +1,125 @@
+#!/usr/bin/env bash
+# lib/feed/conformance.sh — run feed test suites, emit scoreboard.json + scoreboard.md.
+
+set -uo pipefail
+cd "$(git rev-parse --show-toplevel)"
+
+SX_SERVER="${SX_SERVER:-/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe}"
+if [ ! -x "$SX_SERVER" ]; then
+  SX_SERVER="hosts/ocaml/_build/default/bin/sx_server.exe"
+fi
+if [ ! -x "$SX_SERVER" ]; then
+  echo "ERROR: sx_server.exe not found." >&2
+  exit 1
+fi
+
+SUITES=(basic fanout rank integration content notify home dedupe trending mute page thread)
+
+OUT_JSON="lib/feed/scoreboard.json"
+OUT_MD="lib/feed/scoreboard.md"
+
+run_suite() {
+  local suite=$1
+  local file="lib/feed/tests/${suite}.sx"
+  local TMP
+  TMP=$(mktemp)
+  cat > "$TMP" << EPOCHS
+(epoch 1)
+(load "spec/stdlib.sx")
+(load "lib/r7rs.sx")
+(load "lib/apl/runtime.sx")
+(load "lib/feed/normalize.sx")
+(load "lib/feed/stream.sx")
+(load "lib/feed/api.sx")
+(load "lib/feed/fanout.sx")
+(load "lib/feed/dedupe.sx")
+(load "lib/feed/aggregate.sx")
+(load "lib/feed/rank.sx")
+(load "lib/feed/acl.sx")
+(load "lib/feed/fed.sx")
+(load "lib/feed/content.sx")
+(load "lib/feed/notify.sx")
+(load "lib/feed/home.sx")
+(load "lib/feed/trending.sx")
+(load "lib/feed/mute.sx")
+(load "lib/feed/page.sx")
+(load "lib/feed/thread.sx")
+(epoch 2)
+(eval "(define feed-test-pass 0)")
+(eval "(define feed-test-fail 0)")
+(eval "(define feed-test (fn (name got expected) (if (= got expected) (set! feed-test-pass (+ feed-test-pass 1)) (set! feed-test-fail (+ feed-test-fail 1)))))")
+(epoch 3)
+(load "${file}")
+(epoch 4)
+(eval "(list feed-test-pass feed-test-fail)")
+EPOCHS
+
+  local OUTPUT
+  OUTPUT=$(timeout 300 "$SX_SERVER" < "$TMP" 2>/dev/null)
+  rm -f "$TMP"
+
+  local LINE
+  LINE=$(echo "$OUTPUT" | awk '/^\(ok-len 4 / {getline; print; exit}')
+  if [ -z "$LINE" ]; then
+    LINE=$(echo "$OUTPUT" | grep -E '^\(ok 4 \([0-9]+ [0-9]+\)\)' | tail -1 \
+            | sed -E 's/^\(ok 4 //; s/\)$//')
+  fi
+
+  local P F
+  P=$(echo "$LINE" | sed -E 's/^\(([0-9]+) ([0-9]+)\).*/\1/')
+  F=$(echo "$LINE" | sed -E 's/^\(([0-9]+) ([0-9]+)\).*/\2/')
+  P=${P:-0}
+  F=${F:-0}
+  echo "${P} ${F}"
+}
+
+declare -A SUITE_PASS
+declare -A SUITE_FAIL
+TOTAL_PASS=0
+TOTAL_FAIL=0
+
+echo "Running feed conformance suite..." >&2
+for s in "${SUITES[@]}"; do
+  read -r p f < <(run_suite "$s")
+  SUITE_PASS[$s]=$p
+  SUITE_FAIL[$s]=$f
+  TOTAL_PASS=$((TOTAL_PASS + p))
+  TOTAL_FAIL=$((TOTAL_FAIL + f))
+  printf "  %-12s %d/%d\n" "$s" "$p" "$((p+f))" >&2
+done
+
+# scoreboard.json
+{
+  printf '{\n'
+  printf '  "suites": {\n'
+  first=1
+  for s in "${SUITES[@]}"; do
+    if [ $first -eq 0 ]; then printf ',\n'; fi
+    printf '    "%s": {"pass": %d, "fail": %d}' "$s" "${SUITE_PASS[$s]}" "${SUITE_FAIL[$s]}"
+    first=0
+  done
+  printf '\n  },\n'
+  printf '  "total_pass": %d,\n' "$TOTAL_PASS"
+  printf '  "total_fail": %d,\n' "$TOTAL_FAIL"
+  printf '  "total": %d\n' "$((TOTAL_PASS + TOTAL_FAIL))"
+  printf '}\n'
+} > "$OUT_JSON"
+
+# scoreboard.md
+{
+  printf '# feed Conformance Scoreboard\n\n'
+  printf '_Generated by `lib/feed/conformance.sh`_\n\n'
+  printf '| Suite | Pass | Fail | Total |\n'
+  printf '|-------|-----:|-----:|------:|\n'
+  for s in "${SUITES[@]}"; do
+    p=${SUITE_PASS[$s]}
+    f=${SUITE_FAIL[$s]}
+    printf '| %s | %d | %d | %d |\n' "$s" "$p" "$f" "$((p+f))"
+  done
+  printf '| **Total** | **%d** | **%d** | **%d** |\n' "$TOTAL_PASS" "$TOTAL_FAIL" "$((TOTAL_PASS + TOTAL_FAIL))"
+} > "$OUT_MD"
+
+echo "Wrote $OUT_JSON and $OUT_MD" >&2
+echo "Total: $TOTAL_PASS pass, $TOTAL_FAIL fail" >&2
+
+[ "$TOTAL_FAIL" -eq 0 ]

lib/feed/content.sx

@@ -0,0 +1,68 @@
+; feed/content — TF-IDF relevance over activity :tags. Rare tags carry more
+; signal, so an activity matching an uncommon tag ranks above one matching a
+; common tag. Composes with rank.sx: feed/tfidf-score is just another scorer.
+;
+; Requires: lib/feed/normalize.sx, lib/feed/stream.sx, lib/feed/fanout.sx
+; (feed/-distinct), lib/feed/rank.sx (feed/rank).
+
+; document frequency: tag -> number of activities whose :tags contain it
+; (a tag repeated within one activity counts once toward df)
+(define
+  feed/tag-df
+  (fn
+    (stream)
+    (reduce
+      (fn
+        (df a)
+        (reduce
+          (fn (d t) (assoc d t (+ (get d t 0) 1)))
+          df
+          (feed/-distinct (get a :tags))))
+      {}
+      (feed/items stream))))
+
+; inverse document frequency: tag -> log(N / df)
+(define
+  feed/tag-idf
+  (fn
+    (stream)
+    (let
+      ((n (feed/count stream)) (df (feed/tag-df stream)))
+      (reduce
+        (fn (idf t) (assoc idf t (log (/ n (get df t)))))
+        {}
+        (keys df)))))
+
+; term frequency within one activity: tag -> occurrence count
+(define
+  feed/-tf
+  (fn
+    (a)
+    (reduce
+      (fn (tf t) (assoc tf t (+ (get tf t 0) 1)))
+      {}
+      (get a :tags))))
+
+; relevance of an activity to a query (list of tags) given precomputed idf:
+; sum over query tags of tf(tag in activity) * idf(tag in corpus)
+(define
+  feed/tfidf-score
+  (fn
+    (idf query)
+    (fn
+      (a)
+      (let
+        ((tf (feed/-tf a)))
+        (reduce
+          (fn
+            (acc t)
+            (+ acc (* (get tf t 0) (get idf t 0))))
+          0
+          query)))))
+
+; rank a stream by relevance to query tags (idf computed over the stream itself)
+(define
+  feed/by-relevance
+  (fn
+    (stream query)
+    (feed/rank stream (feed/tfidf-score (feed/tag-idf stream) query))))

lib/feed/dedupe.sx

@@ -0,0 +1,76 @@
+; feed/dedupe — collapse duplicate items, keeping first occurrence per key.
+; Each verb may want its own key (see briefing): "alice posted X" keys on
+; (actor verb object) — distinct per actor; "alice liked X / bob liked X"
+; collapse on (verb object) so the cross-actor likes fold into one.
+;
+; Requires: lib/feed/normalize.sx, lib/feed/stream.sx, lib/feed/fanout.sx
+; (feed/-elem? lives in fanout.sx).
+
+; generic: dedupe a stream by key-fn, first occurrence wins (stable)
+(define
+  feed/-dedup-by
+  (fn
+    (items key-fn)
+    (get
+      (reduce
+        (fn
+          (st x)
+          (let
+            ((k (key-fn x)))
+            (if (feed/-elem? k (get st :seen)) st {:seen (append (get st :seen) (list k)) :out (append (get st :out) (list x))})))
+        {:seen (list) :out (list)}
+        items)
+      :out)))
+
+(define
+  feed/dedupe
+  (fn
+    (stream key-fn)
+    (feed/stream (feed/-dedup-by (feed/items stream) key-fn))))
+
+; --- keys -------------------------------------------------------------------
+
+(define
+  feed/activity-key
+  (fn (a) (list (get a :actor) (get a :verb) (get a :object))))
+
+; collapse cross-actor duplicates of the same verb+object (e.g. likes)
+(define feed/collapse-key (fn (a) (list (get a :verb) (get a :object))))
+
+; per-receiver inbox key — one inbox event per (receiver, actor, verb, object)
+(define
+  feed/event-key
+  (fn
+    (ev)
+    (let
+      ((a (get ev :activity)))
+      (list (get ev :to) (get a :actor) (get a :verb) (get a :object)))))
+
+; verbs whose duplicates collapse across actors (reactions, not authorship).
+; rebindable: callers can (set! feed/collapse-verbs ...) to tune the policy.
+(define
+  feed/collapse-verbs
+  (list "like" "favourite" "follow" "boost" "repost"))
+
+; per-verb key: collapse-verbs fold on (verb object); the rest key on
+; (actor verb object).
+(define
+  feed/smart-key
+  (fn
+    (a)
+    (if
+      (feed/-elem? (get a :verb) feed/collapse-verbs)
+      (feed/collapse-key a)
+      (feed/activity-key a))))
+
+; --- ready-made dedupers ----------------------------------------------------
+
+(define feed/dedupe-activities (fn (s) (feed/dedupe s feed/activity-key)))
+
+(define feed/dedupe-collapse (fn (s) (feed/dedupe s feed/collapse-key)))
+
+; verb-aware: reactions collapse cross-actor, posts stay distinct per actor
+(define feed/dedupe-smart (fn (s) (feed/dedupe s feed/smart-key)))
+
+; dedupe an inbox: at most one event per receiver per (actor verb object)
+(define feed/dedupe-inbox (fn (inbox) (feed/dedupe inbox feed/event-key)))

lib/feed/fanout.sx

@@ -0,0 +1,114 @@
+; feed/fanout — THE SHOWCASE. Fan activities out to followers via the APL outer
+; product (∘.×). activities ∘.× audience → an (activity × follower) matrix of
+; inbox events; flatten to a vector; guard-keep only real follow edges.
+;
+; Requires: lib/apl/runtime.sx, lib/feed/normalize.sx, lib/feed/stream.sx.
+;
+; NOTE: apl-outer's combiner result is run through (if (scalar? r) (disclose r) r).
+; A bare dict counts as a scalar (shape ()) and disclose nils it — so the combiner
+; must (enclose ...) its event dict; apl-outer then discloses it back intact.
+
+; --- graph: {followee -> (list of followers)} -------------------------------
+
+(define feed/followers (fn (graph user) (get graph user (list))))
+
+; build a graph from (follower followee) edges: "follower follows followee"
+(define
+  feed/follow-graph
+  (fn
+    (edges)
+    (reduce
+      (fn
+        (g e)
+        (let
+          ((follower (first e)) (followee (nth e 1)))
+          (assoc
+            g
+            followee
+            (append (feed/followers g followee) (list follower)))))
+      {}
+      edges)))
+
+; --- helpers ----------------------------------------------------------------
+
+; unwrap an apl-scalar (has :ravel) back to its value; pass activities through
+(define
+  feed/-val
+  (fn
+    (x)
+    (if (and (= (type-of x) "dict") (has-key? x :ravel)) (disclose x) x)))
+
+(define feed/-elem? (fn (x lst) (some (fn (y) (equal? x y)) lst)))
+
+(define
+  feed/-distinct
+  (fn
+    (lst)
+    (if
+      (= (len lst) 0)
+      (list)
+      (get (apl-unique (make-array (list (len lst)) lst)) :ravel))))
+
+; rank-2 matrix -> rank-1 stream of its ravel
+(define feed/-flatten (fn (arr) (feed/stream (get arr :ravel))))
+
+; distinct receivers across the whole graph, sorted for determinism
+; (dict key order is unspecified, so sort to pin audience/recipient ordering)
+(define
+  feed/audience
+  (fn
+    (graph)
+    (sort
+      (feed/-distinct
+        (reduce
+          (fn (acc k) (append acc (feed/followers graph k)))
+          (list)
+          (keys graph))))))
+
+; --- the outer product ------------------------------------------------------
+
+; one (activity, follower) inbox event, enclosed so apl-outer keeps the dict
+(define feed/-mk-event (fn (a f) (enclose {:activity (feed/-val a) :to (feed/-val f)})))
+
+; keep events where :to actually follows the activity's actor
+(define
+  feed/-edge?
+  (fn
+    (graph)
+    (fn
+      (ev)
+      (feed/-elem?
+        (get ev :to)
+        (feed/followers graph (get (get ev :activity) :actor))))))
+
+; fanout — activities ∘.× audience, flatten, guard-keep real edges
+(define
+  feed/fanout
+  (fn
+    (stream graph)
+    (let
+      ((matrix (apl-outer feed/-mk-event stream (feed/stream (feed/audience graph)))))
+      (feed/filter (feed/-flatten matrix) (feed/-edge? graph)))))
+
+; --- inbox queries ----------------------------------------------------------
+
+(define
+  feed/inbox-for
+  (fn
+    (inbox user)
+    (feed/filter inbox (fn (ev) (equal? (get ev :to) user)))))
+
+(define
+  feed/recipients
+  (fn
+    (inbox)
+    (feed/-distinct (map (fn (ev) (get ev :to)) (feed/items inbox)))))
+
+; the activities (unwrapped) destined for a user
+(define
+  feed/inbox-activities
+  (fn
+    (inbox user)
+    (map
+      (fn (ev) (get ev :activity))
+      (feed/items (feed/inbox-for inbox user)))))

lib/feed/fed.sx

@@ -0,0 +1,60 @@
+; feed/fed — federation. Outbound: a local post fans out, then splits into local
+; vs remote inboxes; remote events are handed to an injected send-fn. Inbound:
+; peer activities merge into the local stream, deduped. Backfill: pull peer
+; history via an injected fetch-fn and merge.
+;
+; remote? / send-fn / fetch-fn are injected so real fed-sx transport wires in here
+; without feed depending on it.
+;
+; Requires: lib/feed/normalize.sx, lib/feed/stream.sx, lib/feed/fanout.sx,
+; lib/feed/dedupe.sx.
+
+; --- merge / ingest ---------------------------------------------------------
+
+(define
+  feed/merge
+  (fn (s1 s2) (feed/stream (append (feed/items s1) (feed/items s2)))))
+
+; merge a peer stream into local, dropping (actor verb object) duplicates
+(define
+  feed/ingest
+  (fn (local peer) (feed/dedupe-activities (feed/merge local peer))))
+
+; --- inbound ----------------------------------------------------------------
+
+; peer pushes raw activities to the local inbox; normalize + ingest
+(define
+  feed/inbound
+  (fn
+    (local raw-activities)
+    (feed/ingest local (feed/stream (map feed/normalize raw-activities)))))
+
+; backfill on subscribe: pull peer history via fetch-fn, normalize, ingest
+(define
+  feed/backfill
+  (fn (local fetch-fn peer-id) (feed/inbound local (fetch-fn peer-id))))
+
+; --- outbound ---------------------------------------------------------------
+
+; split an inbox into local vs remote deliveries by viewer-id predicate
+(define feed/partition-inbox (fn (inbox remote?) {:local (feed/filter inbox (fn (ev) (not (remote? (get ev :to))))) :remote (feed/filter inbox (fn (ev) (remote? (get ev :to))))}))
+
+; fan a stream out over the graph, then partition by locality
+(define
+  feed/federate
+  (fn
+    (stream graph remote?)
+    (feed/partition-inbox (feed/fanout stream graph) remote?)))
+
+; deliver: hand each remote event to send-fn, return the local inbox to enqueue
+(define
+  feed/deliver
+  (fn
+    (stream graph remote? send-fn)
+    (let
+      ((parts (feed/federate stream graph remote?)))
+      (begin
+        (for-each
+          (fn (ev) (send-fn (get ev :to) (get ev :activity)))
+          (feed/items (get parts :remote)))
+        (get parts :local)))))

lib/feed/home.sx

@@ -0,0 +1,23 @@
+; feed/home — the capstone. A user's home timeline is the whole pipeline as one
+; line: fan all activities out over the follow graph, take the events landing in
+; the viewer's inbox, dedupe cross-posts, apply the viewer's ACL, rank, take N.
+;
+; Requires: fanout.sx, dedupe.sx, acl.sx (feed/timeline), rank.sx, stream.sx.
+
+; the activities in a user's inbox, as a stream
+(define
+  feed/inbox-stream
+  (fn (inbox user) (feed/stream (feed/inbox-activities inbox user))))
+
+; fanout ∘ inbox ∘ dedupe ∘ ACL ∘ rank ∘ take
+(define
+  feed/home
+  (fn
+    (stream graph viewer permit? score-fn n)
+    (feed/timeline
+      (feed/dedupe-activities
+        (feed/inbox-stream (feed/fanout stream graph) viewer))
+      viewer
+      permit?
+      score-fn
+      n)))

lib/feed/mute.sx

@@ -0,0 +1,44 @@
+; feed/mute — viewer-controlled filtering. ACL (acl.sx) is author-controlled
+; visibility; mute is the reader's own preference: hide muted actors or tags.
+; Like ACL it is per-viewer and applied per request, never cached.
+;
+; Requires: lib/feed/normalize.sx, lib/feed/stream.sx, lib/feed/fanout.sx
+; (feed/-elem?).
+
+; drop activities authored by a muted actor
+(define
+  feed/mute-actors
+  (fn
+    (stream actors)
+    (feed/filter
+      stream
+      (fn (a) (not (feed/-elem? (get a :actor) actors))))))
+
+; drop activities carrying any muted tag
+(define
+  feed/mute-tags
+  (fn
+    (stream tags)
+    (feed/filter
+      stream
+      (fn (a) (not (some (fn (t) (feed/-elem? t tags)) (get a :tags)))))))
+
+; drop activities about a muted object (thread mute)
+(define
+  feed/mute-objects
+  (fn
+    (stream objects)
+    (feed/filter
+      stream
+      (fn (a) (not (feed/-elem? (get a :object) objects))))))
+
+; apply a viewer preference bag: {:mute-actors (...) :mute-tags (...) :mute-objects (...)}
+(define
+  feed/apply-prefs
+  (fn
+    (stream prefs)
+    (feed/mute-objects
+      (feed/mute-tags
+        (feed/mute-actors stream (get prefs :mute-actors (list)))
+        (get prefs :mute-tags (list)))
+      (get prefs :mute-objects (list)))))

lib/feed/normalize.sx

@@ -0,0 +1,31 @@
+; feed/normalize — coerce arbitrary input into the canonical activity record.
+; An activity is a small dict {:actor :verb :object :at :tags}; a stream is an
+; APL vector of such dicts (see stream.sx). Extra keys on the raw input survive
+; (e.g. :visible-to for ACL, peer metadata for federation) — :tags is the
+; flexible bag but the record is not closed.
+
+(define feed/activity-keys (list :actor :verb :object :at :tags))
+
+(define
+  feed/normalize
+  (fn
+    (raw)
+    (let
+      ((d (if (= (type-of raw) "dict") raw {})))
+      (merge d {:actor (get d :actor "") :object (get d :object nil) :at (get d :at 0) :tags (let ((t (get d :tags (list)))) (if (list? t) t (list t))) :verb (get d :verb "post")}))))
+
+(define
+  feed/activity
+  (fn (actor verb object at tags) (feed/normalize {:actor actor :object object :at at :tags tags :verb verb})))
+
+(define feed/actor (fn (a) (get a :actor)))
+(define feed/verb (fn (a) (get a :verb)))
+(define feed/object (fn (a) (get a :object)))
+(define feed/at (fn (a) (get a :at)))
+(define feed/tags (fn (a) (get a :tags)))
+
+(define
+  feed/activity?
+  (fn
+    (a)
+    (and (= (type-of a) "dict") (has-key? a :actor) (has-key? a :verb))))

lib/feed/notify.sx

@@ -0,0 +1,45 @@
+; feed/notify — a notification feed is a thin layer over a recipient's inbox:
+; the events directed at a user, optionally verb-filtered, and a digest that
+; collapses "alice, bob and 1 other liked X" by (verb, object).
+;
+; Requires: lib/feed/normalize.sx, lib/feed/stream.sx, lib/feed/fanout.sx
+; (feed/inbox-for, feed/-elem?).
+
+; all inbox events for a user (their raw notifications)
+(define feed/notifications (fn (inbox user) (feed/inbox-for inbox user)))
+
+; restrict to notification-worthy verbs (e.g. (list "like" "reply" "follow"))
+(define
+  feed/notify-verbs
+  (fn
+    (inbox user verbs)
+    (feed/filter
+      (feed/inbox-for inbox user)
+      (fn (ev) (feed/-elem? (get (get ev :activity) :verb) verbs)))))
+
+; group key "verb|object" — deterministic, sortable
+(define
+  feed/-notify-key
+  (fn
+    (ev)
+    (let
+      ((a (get ev :activity)))
+      (string-append (get a :verb) "|" (get a :object)))))
+
+; digest: one entry per (verb, object) with the distinct actors and a count,
+; ordered by key for determinism.
+(define
+  feed/notify-digest
+  (fn
+    (inbox user)
+    (let
+      ((events (feed/items (feed/inbox-for inbox user))))
+      (let
+        ((groups (reduce (fn (g ev) (let ((a (get ev :activity)) (k (feed/-notify-key ev))) (let ((cur (get g k {:object (get a :object) :actors (list) :verb (get a :verb)}))) (assoc g k (assoc cur :actors (append (get cur :actors) (list (get a :actor)))))))) {} events)))
+        (map
+          (fn
+            (k)
+            (let
+              ((grp (get groups k)))
+              (assoc grp :count (len (get grp :actors)))))
+          (sort (keys groups)))))))

lib/feed/page.sx

@@ -0,0 +1,50 @@
+; feed/page — pagination. Offset/limit for indexed access, and cursor-based
+; (by :at) for recency feeds, which is stable under inserts: a cursor is the
+; :at of the last item seen, and the next page is the newest items older than it.
+;
+; Requires: lib/feed/stream.sx (feed/recent, feed/take, feed/filter).
+
+; --- offset / limit ---------------------------------------------------------
+
+(define
+  feed/page
+  (fn
+    (stream offset limit)
+    (feed/stream (take (drop (feed/items stream) offset) limit))))
+
+(define
+  feed/page-count
+  (fn (stream limit) (ceil (/ (feed/count stream) limit))))
+
+; --- cursor (recency feeds) -------------------------------------------------
+
+; activities strictly older than cursor (scroll down / load older)
+(define
+  feed/before
+  (fn
+    (stream cursor)
+    (feed/filter stream (fn (a) (< (get a :at) cursor)))))
+
+; activities strictly newer than cursor (load newer / "N new posts")
+(define
+  feed/after
+  (fn
+    (stream cursor)
+    (feed/filter stream (fn (a) (> (get a :at) cursor)))))
+
+; one page: the `limit` newest activities older than cursor, newest first
+(define
+  feed/page-before
+  (fn
+    (stream cursor limit)
+    (feed/take (feed/recent (feed/before stream cursor)) limit)))
+
+; cursor to fetch the next (older) page: :at of the last item of a page,
+; or nil when the page is empty (end of feed)
+(define
+  feed/next-cursor
+  (fn
+    (page)
+    (let
+      ((items (feed/items page)))
+      (if (= (len items) 0) nil (get (last items) :at)))))

lib/feed/rank.sx

@@ -0,0 +1,92 @@
+; feed/rank — scoring + ranking. Scorers are (activity -> number). Ranking is a
+; stable two-pass grade-down: first by :at descending (the tiebreak), then by
+; score descending — so ties resolve by recency, then by input order. Fully
+; deterministic on ties.
+;
+; Requires: lib/apl/runtime.sx, lib/feed/normalize.sx, lib/feed/stream.sx.
+
+; --- scorers ----------------------------------------------------------------
+
+; recency: half-life decay. score = 0.5 ^ (age / half-life). at==now -> 1.0.
+(define
+  feed/recency
+  (fn
+    (now half-life)
+    (fn (a) (expt 0.5 (/ (- now (get a :at)) half-life)))))
+
+; velocity: how many of this actor's activities fall in (at-window, at] —
+; a burst of recent activity scores higher.
+(define
+  feed/velocity
+  (fn
+    (stream window)
+    (fn
+      (a)
+      (len
+        (filter
+          (fn
+            (b)
+            (and
+              (equal? (get b :actor) (get a :actor))
+              (<= (get b :at) (get a :at))
+              (> (get b :at) (- (get a :at) window))))
+          (feed/items stream))))))
+
+; engagement: how many activities in the stream touch this activity's :object
+(define
+  feed/engagement
+  (fn
+    (stream)
+    (fn
+      (a)
+      (len
+        (filter
+          (fn (b) (equal? (get b :object) (get a :object)))
+          (feed/items stream))))))
+
+; composite: weighted sum. parts = (list (list weight scorer) ...)
+(define
+  feed/composite
+  (fn
+    (parts)
+    (fn
+      (a)
+      (reduce
+        (fn (acc p) (+ acc (* (first p) ((nth p 1) a))))
+        0
+        parts))))
+
+; --- ranking ----------------------------------------------------------------
+
+; stable reorder of items by key-fn, descending (grade-down is stable)
+(define
+  feed/-desc-by
+  (fn
+    (items key-fn)
+    (let
+      ((keys (make-array (list (len items)) (map key-fn items))))
+      (let
+        ((order (get (apl-grade-down keys) :ravel)))
+        (map (fn (i) (nth items (- i 1))) order)))))
+
+; rank by score descending; ties -> :at descending -> input order
+(define
+  feed/rank
+  (fn
+    (stream score-fn)
+    (let
+      ((by-at (feed/-desc-by (feed/items stream) feed/at)))
+      (feed/stream (feed/-desc-by by-at score-fn)))))
+
+; attach a :score to each activity (for inspection / debugging)
+(define
+  feed/with-scores
+  (fn
+    (stream score-fn)
+    (feed/stream
+      (map (fn (a) (assoc a :score (score-fn a))) (feed/items stream)))))
+
+; top-N ranked timeline
+(define
+  feed/top
+  (fn (stream score-fn n) (feed/take (feed/rank stream score-fn) n)))

lib/feed/scoreboard.json

@@ -0,0 +1,19 @@
+{
+  "suites": {
+    "basic": {"pass": 30, "fail": 0},
+    "fanout": {"pass": 29, "fail": 0},
+    "rank": {"pass": 24, "fail": 0},
+    "integration": {"pass": 22, "fail": 0},
+    "content": {"pass": 15, "fail": 0},
+    "notify": {"pass": 8, "fail": 0},
+    "home": {"pass": 6, "fail": 0},
+    "dedupe": {"pass": 9, "fail": 0},
+    "trending": {"pass": 11, "fail": 0},
+    "mute": {"pass": 9, "fail": 0},
+    "page": {"pass": 14, "fail": 0},
+    "thread": {"pass": 12, "fail": 0}
+  },
+  "total_pass": 189,
+  "total_fail": 0,
+  "total": 189
+}

lib/feed/scoreboard.md

@@ -0,0 +1,19 @@
+# feed Conformance Scoreboard
+
+_Generated by `lib/feed/conformance.sh`_
+
+| Suite | Pass | Fail | Total |
+|-------|-----:|-----:|------:|
+| basic | 30 | 0 | 30 |
+| fanout | 29 | 0 | 29 |
+| rank | 24 | 0 | 24 |
+| integration | 22 | 0 | 22 |
+| content | 15 | 0 | 15 |
+| notify | 8 | 0 | 8 |
+| home | 6 | 0 | 6 |
+| dedupe | 9 | 0 | 9 |
+| trending | 11 | 0 | 11 |
+| mute | 9 | 0 | 9 |
+| page | 14 | 0 | 14 |
+| thread | 12 | 0 | 12 |
+| **Total** | **189** | **0** | **189** |

lib/feed/stream.sx

@@ -0,0 +1,75 @@
+; feed/stream — a stream is an APL vector (rank-1 array) whose ravel holds
+; activity dicts. Operations lift APL primitives onto this shape: filter via
+; compress (/), sort via grade (⍋), take via ↑, reverse via ⌽.
+;
+; Requires: lib/apl/runtime.sx, lib/feed/normalize.sx (loaded by harness).
+
+(define feed/stream (fn (acts) (make-array (list (len acts)) acts)))
+
+(define feed/items (fn (s) (get s :ravel)))
+
+(define feed/count (fn (s) (len (get s :ravel))))
+
+(define feed/empty (feed/stream (list)))
+
+(define feed/empty? (fn (s) (= (feed/count s) 0)))
+
+; filter — bool mask ∘ compress. pred : activity -> truthy
+(define
+  feed/filter
+  (fn
+    (s pred)
+    (let
+      ((items (get s :ravel)))
+      (let
+        ((mask (make-array (list (len items)) (map (fn (a) (if (pred a) 1 0)) items))))
+        (apl-compress mask s)))))
+
+; sort-by — ascending, stable on ties (grade-up is stable). key-fn : activity -> number
+(define
+  feed/sort-by
+  (fn
+    (s key-fn)
+    (let
+      ((items (get s :ravel)))
+      (let
+        ((keys (make-array (list (len items)) (map key-fn items))))
+        (let
+          ((order (get (apl-grade-up keys) :ravel)))
+          (feed/stream (map (fn (i) (nth items (- i 1))) order)))))))
+
+(define feed/sort-by-at (fn (s) (feed/sort-by s feed/at)))
+
+; newest-first: ascending sort then reverse (⌽)
+(define feed/recent (fn (s) (apl-reverse (feed/sort-by-at s))))
+
+; take N (↑), clamped to stream length so it never over-takes/pads
+(define
+  feed/take
+  (fn
+    (s n)
+    (let
+      ((c (feed/count s)))
+      (if (>= n c) s (apl-take (apl-scalar n) s)))))
+
+(define feed/reverse (fn (s) (apl-reverse s)))
+
+; common predicates
+(define
+  feed/by-actor
+  (fn (s actor) (feed/filter s (fn (a) (equal? (get a :actor) actor)))))
+
+(define
+  feed/by-verb
+  (fn (s verb) (feed/filter s (fn (a) (equal? (get a :verb) verb)))))
+
+(define
+  feed/by-object
+  (fn
+    (s object)
+    (feed/filter s (fn (a) (equal? (get a :object) object)))))
+
+; activities at or after timestamp t
+(define
+  feed/since
+  (fn (s t) (feed/filter s (fn (a) (>= (get a :at) t)))))

lib/feed/tests/basic.sx

@@ -0,0 +1,118 @@
+; Phase 1 — normalize, stream ops, api. Uses the feed-test harness
+; (feed-test name got expected) provided by conformance.sh.
+
+; ---------- normalize ----------
+
+(feed-test
+  "normalize default actor"
+  (feed/actor (feed/normalize {}))
+  "")
+(feed-test
+  "normalize default verb"
+  (feed/verb (feed/normalize {}))
+  "post")
+(feed-test
+  "normalize default at"
+  (feed/at (feed/normalize {}))
+  0)
+(feed-test
+  "normalize default object"
+  (feed/object (feed/normalize {}))
+  nil)
+(feed-test
+  "normalize default tags"
+  (feed/tags (feed/normalize {}))
+  (list))
+(feed-test
+  "normalize keeps actor"
+  (feed/actor (feed/normalize {:actor "alice"}))
+  "alice")
+(feed-test
+  "normalize keeps verb"
+  (feed/verb (feed/normalize {:verb "like"}))
+  "like")
+(feed-test
+  "normalize scalar tag -> list"
+  (feed/tags (feed/normalize {:tags "x"}))
+  (list "x"))
+(feed-test
+  "normalize list tags kept"
+  (feed/tags (feed/normalize {:tags (list "a" "b")}))
+  (list "a" "b"))
+(feed-test
+  "activity constructor at"
+  (feed/at (feed/activity "a" "post" "o" 5 (list)))
+  5)
+(feed-test
+  "activity? on activity"
+  (feed/activity? (feed/normalize {:actor "a"}))
+  true)
+(feed-test "activity? on number" (feed/activity? 5) false)
+(feed-test "activity? on bare dict" (feed/activity? {:foo 1}) false)
+
+; ---------- stream ----------
+
+(define
+  S
+  (feed/stream
+    (list
+      (feed/activity "alice" "post" "p1" 30 (list))
+      (feed/activity "bob" "like" "p1" 10 (list))
+      (feed/activity "alice" "post" "p2" 20 (list)))))
+
+(feed-test "stream count" (feed/count S) 3)
+(feed-test "stream items len" (len (feed/items S)) 3)
+(feed-test
+  "sort-by-at actors asc"
+  (map feed/actor (feed/items (feed/sort-by-at S)))
+  (list "bob" "alice" "alice"))
+(feed-test
+  "recent newest first"
+  (map feed/at (feed/items (feed/recent S)))
+  (list 30 20 10))
+(feed-test
+  "take 2 of recent"
+  (feed/count (feed/take (feed/recent S) 2))
+  2)
+(feed-test
+  "take clamps past end"
+  (feed/count (feed/take S 10))
+  3)
+(feed-test
+  "by-actor alice count"
+  (feed/count (feed/by-actor S "alice"))
+  2)
+(feed-test
+  "by-verb like actor"
+  (map feed/actor (feed/items (feed/by-verb S "like")))
+  (list "bob"))
+(feed-test
+  "by-object p1 count"
+  (feed/count (feed/by-object S "p1"))
+  2)
+(feed-test
+  "since 20 count"
+  (feed/count (feed/since S 20))
+  2)
+(feed-test
+  "reverse ats"
+  (map feed/at (feed/items (feed/reverse S)))
+  (list 20 10 30))
+(feed-test "empty? on empty" (feed/empty? feed/empty) true)
+(feed-test
+  "empty? on filtered-out"
+  (feed/empty? (feed/by-actor S "zzz"))
+  true)
+
+; ---------- api ----------
+
+(feed/reset!)
+(feed/post {:actor "x" :at 1 :verb "post"})
+(feed/post {:actor "y" :at 2 :verb "like"})
+(feed-test "api size after posts" (feed/size) 2)
+(feed-test "api all count" (feed/count (feed/all)) 2)
+(feed-test
+  "post returns normalized verb"
+  (feed/verb (feed/post {:actor "z"}))
+  "post")
+(feed-test "api size after third post" (feed/size) 3)

lib/feed/tests/content.sx

@@ -0,0 +1,85 @@
+; Follow-up — TF-IDF content ranking over :tags. (feed-test name got expected)
+
+(define
+  corpus
+  (feed/stream
+    (list
+      (feed/normalize {:actor "u" :object "o1" :at 10 :tags (list "cats" "funny")})
+      (feed/normalize {:actor "u" :object "o2" :at 20 :tags (list "cats" "news")})
+      (feed/normalize {:actor "u" :object "o3" :at 30 :tags (list "politics" "news")})
+      (feed/normalize {:actor "u" :object "o4" :at 40 :tags (list "cats")}))))
+
+; ---------- document frequency ----------
+
+(feed-test "df cats" (get (feed/tag-df corpus) "cats") 3)
+(feed-test "df news" (get (feed/tag-df corpus) "news") 2)
+(feed-test "df funny" (get (feed/tag-df corpus) "funny") 1)
+(feed-test "df politics" (get (feed/tag-df corpus) "politics") 1)
+(feed-test "df full" (feed/tag-df corpus) {:news 2 :funny 1 :politics 1 :cats 3})
+
+; ---------- inverse document frequency ----------
+
+(feed-test
+  "idf news = log(4/2)"
+  (get (feed/tag-idf corpus) "news")
+  (log 2))
+(feed-test
+  "idf funny = log(4/1)"
+  (get (feed/tag-idf corpus) "funny")
+  (log 4))
+(feed-test
+  "rarer tag has higher idf"
+  (>
+    (get (feed/tag-idf corpus) "funny")
+    (get (feed/tag-idf corpus) "cats"))
+  true)
+
+; ---------- tf-idf scoring ----------
+
+(define idf (feed/tag-idf corpus))
+
+(feed-test
+  "score query funny on o1"
+  ((feed/tfidf-score idf (list "funny")) (feed/normalize {:actor "u" :object "x" :tags (list "cats" "funny")}))
+  (log 4))
+(feed-test
+  "score query funny on non-match"
+  ((feed/tfidf-score idf (list "funny")) (feed/normalize {:actor "u" :object "x" :tags (list "cats")}))
+  0)
+(feed-test
+  "unknown query tag scores 0"
+  ((feed/tfidf-score idf (list "zzz")) (feed/normalize {:actor "u" :object "x" :tags (list "cats")}))
+  0)
+
+; ---------- ranking by relevance ----------
+
+; query news: o2,o3 match (score log2), o1,o4 don't (0); ties break by :at desc
+(feed-test
+  "by-relevance news order"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/by-relevance corpus (list "news"))))
+  (list "o3" "o2" "o4" "o1"))
+
+; query funny: only o1 matches -> ranks first
+(feed-test
+  "by-relevance funny first"
+  (get
+    (nth (feed/items (feed/by-relevance corpus (list "funny"))) 0)
+    :object)
+  "o1")
+
+; query (cats news): o2 carries both tags -> highest combined tf-idf
+(feed-test
+  "by-relevance cats+news top"
+  (get
+    (nth
+      (feed/items (feed/by-relevance corpus (list "cats" "news")))
+      0)
+    :object)
+  "o2")
+
+(feed-test
+  "by-relevance preserves count"
+  (feed/count (feed/by-relevance corpus (list "cats")))
+  4)

lib/feed/tests/dedupe.sx

@@ -0,0 +1,56 @@
+; Follow-up — verb-aware (smart) dedupe. (feed-test name got expected)
+
+; reactions (like/follow) collapse cross-actor; posts stay distinct per actor
+(define
+  M
+  (feed/stream
+    (list
+      (feed/activity "alice" "like" "X" 1 (list))
+      (feed/activity "bob" "like" "X" 2 (list))
+      (feed/activity "alice" "post" "P" 3 (list))
+      (feed/activity "bob" "post" "P" 4 (list))
+      (feed/activity "alice" "follow" "C" 5 (list))
+      (feed/activity "bob" "follow" "C" 6 (list))))) ; collapses
+
+(feed-test
+  "smart dedupe total"
+  (feed/count (feed/dedupe-smart M))
+  4)
+(feed-test
+  "smart keeps both posts"
+  (feed/count (feed/by-verb (feed/dedupe-smart M) "post"))
+  2)
+(feed-test
+  "smart collapses likes to one"
+  (feed/count (feed/by-verb (feed/dedupe-smart M) "like"))
+  1)
+(feed-test
+  "smart collapses follows to one"
+  (feed/count (feed/by-verb (feed/dedupe-smart M) "follow"))
+  1)
+(feed-test
+  "collapsed like keeps first actor"
+  (map feed/actor (feed/items (feed/by-verb (feed/dedupe-smart M) "like")))
+  (list "alice"))
+
+; contrast: plain activity dedupe keeps cross-actor likes distinct
+(feed-test
+  "activity dedupe keeps both likes"
+  (feed/count (feed/by-verb (feed/dedupe-activities M) "like"))
+  2)
+
+; contrast: blanket collapse folds the two posts (same verb+object) too
+(feed-test
+  "collapse dedupe folds posts"
+  (feed/count (feed/by-verb (feed/dedupe-collapse M) "post"))
+  1)
+
+; smart-key dispatch
+(feed-test
+  "smart-key reaction -> (verb object)"
+  (feed/smart-key (feed/activity "alice" "like" "X" 0 (list)))
+  (list "like" "X"))
+(feed-test
+  "smart-key post -> (actor verb object)"
+  (feed/smart-key (feed/activity "alice" "post" "P" 0 (list)))
+  (list "alice" "post" "P"))

lib/feed/tests/fanout.sx

@@ -0,0 +1,187 @@
+; Phase 2 — fanout via outer product + dedupe. (feed-test name got expected)
+
+; ---------- graph ----------
+
+; edges: (follower followee). bob,carol follow alice; carol,dave follow bob.
+(define
+  G
+  (feed/follow-graph
+    (list
+      (list "bob" "alice")
+      (list "carol" "alice")
+      (list "carol" "bob")
+      (list "dave" "bob"))))
+
+(feed-test "followers alice" (feed/followers G "alice") (list "bob" "carol"))
+(feed-test "followers bob" (feed/followers G "bob") (list "carol" "dave"))
+(feed-test "followers unknown" (feed/followers G "zzz") (list))
+(feed-test "audience distinct" (feed/audience G) (list "bob" "carol" "dave"))
+
+; ---------- fanout ----------
+
+(define
+  S
+  (feed/stream
+    (list
+      (feed/activity "alice" "post" "p1" 10 (list))
+      (feed/activity "alice" "post" "p2" 20 (list))
+      (feed/activity "bob" "like" "p1" 30 (list)))))
+
+(define IB (feed/fanout S G))
+
+(feed-test "fanout total edges" (feed/count IB) 6)
+(feed-test
+  "inbox bob count"
+  (feed/count (feed/inbox-for IB "bob"))
+  2)
+(feed-test
+  "inbox carol count"
+  (feed/count (feed/inbox-for IB "carol"))
+  3)
+(feed-test
+  "inbox dave count"
+  (feed/count (feed/inbox-for IB "dave"))
+  1)
+(feed-test
+  "inbox alice (follows none)"
+  (feed/count (feed/inbox-for IB "alice"))
+  0)
+(feed-test
+  "recipients order"
+  (feed/recipients IB)
+  (list "bob" "carol" "dave"))
+(feed-test
+  "bob inbox objects"
+  (map (fn (a) (get a :object)) (feed/inbox-activities IB "bob"))
+  (list "p1" "p2"))
+(feed-test
+  "dave inbox objects"
+  (map (fn (a) (get a :object)) (feed/inbox-activities IB "dave"))
+  (list "p1"))
+(feed-test
+  "dave inbox verb"
+  (map (fn (a) (get a :verb)) (feed/inbox-activities IB "dave"))
+  (list "like"))
+
+; empty graph → no audience → no edges
+(feed-test
+  "empty graph fanout"
+  (feed/count (feed/fanout S {}))
+  0)
+
+; actor nobody follows produces no edges
+(define
+  Sghost
+  (feed/stream (list (feed/activity "ghost" "post" "g1" 5 (list)))))
+(feed-test
+  "unfollowed actor fanout"
+  (feed/count (feed/fanout Sghost G))
+  0)
+
+; ---------- high fanout (popular actor) ----------
+
+(define
+  Gstar
+  (feed/follow-graph
+    (list
+      (list "u1" "star")
+      (list "u2" "star")
+      (list "u3" "star")
+      (list "u4" "star")
+      (list "u5" "star"))))
+(define
+  Sstar
+  (feed/stream (list (feed/activity "star" "post" "s1" 1 (list)))))
+(feed-test
+  "star fanout count"
+  (feed/count (feed/fanout Sstar Gstar))
+  5)
+(feed-test "star audience size" (len (feed/audience Gstar)) 5)
+
+; ---------- mutual follow ----------
+
+(define Gmut (feed/follow-graph (list (list "a" "b") (list "b" "a"))))
+(define
+  Smut
+  (feed/stream
+    (list
+      (feed/activity "a" "post" "pa" 1 (list))
+      (feed/activity "b" "post" "pb" 2 (list)))))
+(define IBmut (feed/fanout Smut Gmut))
+(feed-test "mutual total" (feed/count IBmut) 2)
+(feed-test
+  "mutual a gets pb"
+  (map (fn (x) (get x :object)) (feed/inbox-activities IBmut "a"))
+  (list "pb"))
+(feed-test
+  "mutual b gets pa"
+  (map (fn (x) (get x :object)) (feed/inbox-activities IBmut "b"))
+  (list "pa"))
+
+; ---------- dedupe ----------
+
+(define
+  Sdup2
+  (feed/stream
+    (list
+      (feed/activity "alice" "post" "p1" 1 (list))
+      (feed/activity "alice" "post" "p1" 9 (list))
+      (feed/activity "alice" "post" "p2" 2 (list)))))
+(feed-test
+  "dedupe-activities collapses dup"
+  (feed/count (feed/dedupe-activities Sdup2))
+  2)
+(feed-test
+  "dedupe-activities keeps distinct"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/dedupe-activities Sdup2)))
+  (list "p1" "p2"))
+
+(define
+  Slikes
+  (feed/stream
+    (list
+      (feed/activity "alice" "like" "X" 1 (list))
+      (feed/activity "bob" "like" "X" 2 (list))
+      (feed/activity "carol" "like" "Y" 3 (list)))))
+(feed-test
+  "collapse cross-actor likes"
+  (feed/count (feed/dedupe-collapse Slikes))
+  2)
+(feed-test
+  "collapse keeps distinct objects"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/dedupe-collapse Slikes)))
+  (list "X" "Y"))
+
+(feed-test
+  "activity-key shape"
+  (feed/activity-key (feed/activity "a" "post" "o" 0 (list)))
+  (list "a" "post" "o"))
+(feed-test
+  "collapse-key shape"
+  (feed/collapse-key (feed/activity "a" "like" "o" 0 (list)))
+  (list "like" "o"))
+
+; cross-post: alice posts p1 twice → bob's inbox has it twice → dedupe-inbox → once
+(define
+  Scross
+  (feed/stream
+    (list
+      (feed/activity "alice" "post" "p1" 1 (list))
+      (feed/activity "alice" "post" "p1" 5 (list)))))
+(define IBcross (feed/fanout Scross G))
+(feed-test
+  "cross-post raw bob count"
+  (feed/count (feed/inbox-for IBcross "bob"))
+  2)
+(feed-test
+  "cross-post deduped bob count"
+  (feed/count (feed/inbox-for (feed/dedupe-inbox IBcross) "bob"))
+  1)
+(feed-test
+  "dedupe-inbox keeps distinct receivers"
+  (feed/count (feed/dedupe-inbox IBcross))
+  2)

lib/feed/tests/home.sx

@@ -0,0 +1,73 @@
+; Follow-up — feed/home capstone pipeline. (feed-test name got expected)
+
+; alice follows star and bob (edges: follower followee)
+(define
+  G
+  (feed/follow-graph (list (list "alice" "star") (list "alice" "bob"))))
+
+; star posts s1 then s2; bob posts b1; star re-posts s1 (cross-post dup);
+; zoe posts z1 (alice does NOT follow zoe)
+(define
+  S
+  (feed/stream
+    (list
+      (feed/activity "star" "post" "s1" 10 (list))
+      (feed/activity "star" "post" "s2" 20 (list))
+      (feed/activity "bob" "post" "b1" 15 (list))
+      (feed/activity "star" "post" "s1" 5 (list))
+      (feed/activity "zoe" "post" "z1" 30 (list)))))
+
+(define rec (feed/recency 100 10))
+
+(feed-test
+  "home count (deduped, followed only)"
+  (feed/count (feed/home S G "alice" feed/permit-public? rec 10))
+  3)
+
+(feed-test
+  "home order by recency"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/home S G "alice" feed/permit-public? rec 10)))
+  (list "s2" "b1" "s1"))
+
+(feed-test
+  "home excludes unfollowed zoe"
+  (feed/-elem?
+    "z1"
+    (map
+      (fn (a) (get a :object))
+      (feed/items (feed/home S G "alice" feed/permit-public? rec 10))))
+  false)
+
+(feed-test
+  "home top-2"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/home S G "alice" feed/permit-public? rec 2)))
+  (list "s2" "b1"))
+
+(feed-test
+  "home dedupes cross-post (one s1)"
+  (len
+    (filter
+      (fn (o) (equal? o "s1"))
+      (map
+        (fn (a) (get a :object))
+        (feed/items
+          (feed/home S G "alice" feed/permit-public? rec 10)))))
+  1)
+
+; ACL applied per-viewer in the home pipeline
+(define
+  Sacl
+  (feed/stream
+    (list (feed/normalize {:actor "star" :object "pub" :at 20}) (feed/normalize {:actor "star" :object "sec" :visible-to (list "carol") :at 25}))))
+(define Gacl (feed/follow-graph (list (list "alice" "star"))))
+
+(feed-test
+  "home hides activity alice not permitted"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/home Sacl Gacl "alice" feed/permit-acl? rec 10)))
+  (list "pub"))

lib/feed/tests/integration.sx

@@ -0,0 +1,155 @@
+; Phase 4 — visibility (ACL) + federation, and the end-to-end timeline.
+; (feed-test name got expected)
+
+; ---------- ACL visibility ----------
+; pub: public. sec: bob, allows carol. dm: frank, allows dave.
+
+(define
+  C
+  (feed/stream
+    (list
+      (feed/normalize {:actor "alice" :object "pub" :at 10})
+      (feed/normalize {:actor "bob" :object "sec" :visible-to (list "carol") :at 20})
+      (feed/normalize {:actor "frank" :object "dm" :visible-to (list "dave") :at 30}))))
+
+(feed-test
+  "public visible to anyone"
+  (feed/count (feed/visible C "zoe" feed/permit-acl?))
+  1)
+(feed-test
+  "carol sees allowlisted + public"
+  (feed/count (feed/visible C "carol" feed/permit-acl?))
+  2)
+(feed-test
+  "dave sees dm + public"
+  (feed/count (feed/visible C "dave" feed/permit-acl?))
+  2)
+(feed-test
+  "author always sees own private"
+  (feed/count (feed/visible C "frank" feed/permit-acl?))
+  2)
+(feed-test
+  "permit-public? lets all through"
+  (feed/count (feed/visible C "zoe" feed/permit-public?))
+  3)
+(feed-test
+  "visible objects for dave"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/visible C "dave" feed/permit-acl?)))
+  (list "pub" "dm"))
+
+; per-viewer: same stream, different timelines
+(feed-test
+  "zoe timeline differs from carol"
+  (not
+    (=
+      (feed/count (feed/visible C "zoe" feed/permit-acl?))
+      (feed/count (feed/visible C "carol" feed/permit-acl?))))
+  true)
+
+; ---------- federation: merge / ingest ----------
+
+(define
+  L
+  (feed/stream
+    (list
+      (feed/activity "alice" "post" "p1" 10 (list))
+      (feed/activity "alice" "post" "p2" 20 (list)))))
+(define
+  P
+  (feed/stream
+    (list
+      (feed/activity "alice" "post" "p2" 20 (list))
+      (feed/activity "peer" "post" "p9" 25 (list)))))
+
+(feed-test "merge concatenates" (feed/count (feed/merge L P)) 4)
+(feed-test
+  "ingest dedupes overlap"
+  (feed/count (feed/ingest L P))
+  3)
+
+(feed-test
+  "inbound normalizes + ingests"
+  (feed/count (feed/inbound L (list {:actor "peer" :object "p9" :at 25} {:actor "alice" :object "p1" :at 10})))
+  3)
+
+; backfill via injected fetch-fn
+(define peer-history (fn (peer-id) (list {:actor peer-id :object "h1" :at 1} {:actor peer-id :object "h2" :at 2})))
+(feed-test
+  "backfill merges peer history"
+  (feed/count (feed/backfill L peer-history "remote"))
+  4)
+(feed-test
+  "backfill objects present"
+  (map
+    (fn (a) (get a :object))
+    (feed/items
+      (feed/by-actor (feed/backfill L peer-history "remote") "remote")))
+  (list "h1" "h2"))
+
+; ---------- federation: outbound partition ----------
+
+; bob (local), alice@remote + carol@remote (remote) follow star
+(define
+  Gf
+  (feed/follow-graph
+    (list
+      (list "bob" "star")
+      (list "alice@remote" "star")
+      (list "carol@remote" "star"))))
+(define
+  Sf
+  (feed/stream (list (feed/activity "star" "post" "s1" 1 (list)))))
+(define
+  remote?
+  (fn (id) (feed/-elem? id (list "alice@remote" "carol@remote"))))
+(define parts (feed/federate Sf Gf remote?))
+
+(feed-test "local deliveries" (feed/count (get parts :local)) 1)
+(feed-test "remote deliveries" (feed/count (get parts :remote)) 2)
+(feed-test
+  "local recipient is bob"
+  (feed/recipients (get parts :local))
+  (list "bob"))
+
+; deliver: send-fn receives each remote event, local inbox returned
+(define sent (list))
+(define send-fn (fn (to act) (set! sent (append sent (list to)))))
+(define local-inbox (feed/deliver Sf Gf remote? send-fn))
+(feed-test "deliver returns local inbox" (feed/count local-inbox) 1)
+(feed-test "deliver sent to both remotes" (len sent) 2)
+(feed-test "deliver remote targets" sent (list "alice@remote" "carol@remote"))
+
+; ---------- end-to-end: federated, ACL-filtered, ranked timeline ----------
+
+(define
+  base
+  (feed/stream
+    (list
+      (feed/normalize {:actor "alice" :object "a1" :at 100})
+      (feed/normalize {:actor "bob" :object "b1" :visible-to (list "carol") :at 90})
+      (feed/normalize {:actor "eve" :object "e1" :visible-to (list "dave") :at 80}))))
+(define federated (feed/inbound base (list {:actor "peer" :object "x1" :at 110})))
+(define rec (feed/recency 120 10))
+(define
+  carol-tl
+  (feed/timeline federated "carol" feed/permit-acl? rec 3))
+
+; eve's :visible-to excludes carol -> filtered out; peer/alice public, bob allows carol
+(feed-test "carol federated timeline count" (feed/count carol-tl) 3)
+(feed-test
+  "carol timeline order (recency)"
+  (map (fn (a) (get a :object)) (feed/items carol-tl))
+  (list "x1" "a1" "b1"))
+(feed-test
+  "eve dm excluded from carol"
+  (feed/-elem? "e1" (map (fn (a) (get a :object)) (feed/items carol-tl)))
+  false)
+(feed-test
+  "dave sees eve dm not bob"
+  (map
+    (fn (a) (get a :object))
+    (feed/items
+      (feed/timeline federated "dave" feed/permit-acl? rec 5)))
+  (list "x1" "a1" "e1"))

lib/feed/tests/mute.sx

@@ -0,0 +1,68 @@
+; Follow-up — viewer mute/block filtering. (feed-test name got expected)
+
+(define
+  S
+  (feed/stream
+    (list
+      (feed/normalize {:actor "alice" :object "P1" :at 1 :tags (list "news")})
+      (feed/normalize {:actor "bob" :object "P2" :at 2 :tags (list "spam")})
+      (feed/normalize {:actor "alice" :object "P3" :at 3 :tags (list "cats")})
+      (feed/normalize {:actor "carol" :object "P4" :at 4 :tags (list "news" "spam")}))))
+
+; ---------- mute actors ----------
+
+(feed-test
+  "mute bob drops his post"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/mute-actors S (list "bob"))))
+  (list "P1" "P3" "P4"))
+(feed-test
+  "mute alice drops two"
+  (feed/count (feed/mute-actors S (list "alice")))
+  2)
+(feed-test
+  "mute nobody keeps all"
+  (feed/count (feed/mute-actors S (list)))
+  4)
+
+; ---------- mute tags ----------
+
+(feed-test
+  "mute spam tag drops two"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/mute-tags S (list "spam"))))
+  (list "P1" "P3"))
+(feed-test
+  "mute news+cats leaves spam-only"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/mute-tags S (list "news" "cats"))))
+  (list "P2"))
+
+; ---------- mute objects ----------
+
+(feed-test
+  "mute object P3 (thread mute)"
+  (feed/count (feed/mute-objects S (list "P3")))
+  3)
+
+; ---------- combined prefs ----------
+
+(feed-test
+  "apply-prefs actors + tags"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/apply-prefs S {:mute-actors (list "bob") :mute-tags (list "cats")})))
+  (list "P1" "P4"))
+(feed-test
+  "apply-prefs empty keeps all"
+  (feed/count (feed/apply-prefs S {}))
+  4)
+(feed-test
+  "apply-prefs all three filters"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/apply-prefs S {:mute-objects (list "P3") :mute-actors (list "carol") :mute-tags (list "spam")})))
+  (list "P1"))

lib/feed/tests/notify.sx

@@ -0,0 +1,69 @@
+; Follow-up — notification feed over an inbox. (feed-test name got expected)
+
+; an inbox is a stream of {:to receiver :activity act} events
+(define mk-ev (fn (to act) {:activity act :to to}))
+
+(define
+  IB
+  (feed/stream
+    (list
+      (mk-ev "alice" (feed/activity "bob" "like" "P" 10 (list)))
+      (mk-ev "alice" (feed/activity "carol" "like" "P" 20 (list)))
+      (mk-ev "alice" (feed/activity "dave" "reply" "Q" 30 (list)))
+      (mk-ev "bob" (feed/activity "eve" "like" "R" 40 (list))))))
+
+; ---------- raw notifications ----------
+
+(feed-test
+  "alice notification count"
+  (feed/count (feed/notifications IB "alice"))
+  3)
+(feed-test
+  "bob notification count"
+  (feed/count (feed/notifications IB "bob"))
+  1)
+(feed-test
+  "zoe no notifications"
+  (feed/count (feed/notifications IB "zoe"))
+  0)
+
+; ---------- verb filtering ----------
+
+(feed-test
+  "alice likes only"
+  (feed/count (feed/notify-verbs IB "alice" (list "like")))
+  2)
+(feed-test
+  "alice replies only"
+  (feed/count (feed/notify-verbs IB "alice" (list "reply")))
+  1)
+(feed-test
+  "alice like+reply"
+  (feed/count (feed/notify-verbs IB "alice" (list "like" "reply")))
+  3)
+(feed-test
+  "alice follow (none)"
+  (feed/count (feed/notify-verbs IB "alice" (list "follow")))
+  0)
+
+; ---------- digest ----------
+
+(define dig (feed/notify-digest IB "alice"))
+
+(feed-test "digest group count" (len dig) 2)
+(feed-test
+  "digest sorted by key (like|P before reply|Q)"
+  (map (fn (g) (get g :object)) dig)
+  (list "P" "Q"))
+(feed-test
+  "like group actors"
+  (get (nth dig 0) :actors)
+  (list "bob" "carol"))
+(feed-test "like group count" (get (nth dig 0) :count) 2)
+(feed-test "like group verb" (get (nth dig 0) :verb) "like")
+(feed-test "reply group count" (get (nth dig 1) :count) 1)
+(feed-test
+  "reply group actors"
+  (get (nth dig 1) :actors)
+  (list "dave"))
+(feed-test "empty digest for zoe" (feed/notify-digest IB "zoe") (list))

lib/feed/tests/page.sx

@@ -0,0 +1,86 @@
+; Follow-up — pagination (offset + cursor). (feed-test name got expected)
+
+; ---------- offset / limit ----------
+
+(define
+  O
+  (feed/stream
+    (list
+      (feed/activity "u" "post" "o1" 1 (list))
+      (feed/activity "u" "post" "o2" 2 (list))
+      (feed/activity "u" "post" "o3" 3 (list))
+      (feed/activity "u" "post" "o4" 4 (list))
+      (feed/activity "u" "post" "o5" 5 (list)))))
+
+(feed-test
+  "page 1"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/page O 0 2)))
+  (list "o1" "o2"))
+(feed-test
+  "page 2"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/page O 2 2)))
+  (list "o3" "o4"))
+(feed-test
+  "page 3 (partial)"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/page O 4 2)))
+  (list "o5"))
+(feed-test
+  "page past end empty"
+  (feed/count (feed/page O 10 2))
+  0)
+(feed-test "page-count 5/2 = 3" (feed/page-count O 2) 3)
+(feed-test "page-count 5/5 = 1" (feed/page-count O 5) 1)
+
+; ---------- cursor (recency) ----------
+
+(define
+  R
+  (feed/stream
+    (list
+      (feed/activity "u" "post" "a" 50 (list))
+      (feed/activity "u" "post" "b" 40 (list))
+      (feed/activity "u" "post" "c" 30 (list))
+      (feed/activity "u" "post" "d" 20 (list))
+      (feed/activity "u" "post" "e" 10 (list)))))
+
+(define p1 (feed/page-before R 100 2))
+(feed-test
+  "cursor page 1 newest first"
+  (map (fn (a) (get a :object)) (feed/items p1))
+  (list "a" "b"))
+(feed-test "next cursor after page 1" (feed/next-cursor p1) 40)
+
+(define p2 (feed/page-before R (feed/next-cursor p1) 2))
+(feed-test
+  "cursor page 2"
+  (map (fn (a) (get a :object)) (feed/items p2))
+  (list "c" "d"))
+(feed-test "next cursor after page 2" (feed/next-cursor p2) 20)
+
+(define p3 (feed/page-before R (feed/next-cursor p2) 2))
+(feed-test
+  "cursor page 3 (partial)"
+  (map (fn (a) (get a :object)) (feed/items p3))
+  (list "e"))
+
+(feed-test
+  "empty page nil cursor"
+  (feed/next-cursor (feed/page-before R 5 2))
+  nil)
+
+(feed-test
+  "after cursor loads newer"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/recent (feed/after R 30))))
+  (list "a" "b"))
+(feed-test
+  "before cursor count"
+  (feed/count (feed/before R 30))
+  2)

lib/feed/tests/rank.sx

@@ -0,0 +1,160 @@
+; Phase 3 — aggregation + ranking. (feed-test name got expected)
+
+; ---------- aggregation ----------
+
+(define
+  A
+  (feed/stream
+    (list
+      (feed/activity "alice" "post" "p1" 5 (list))
+      (feed/activity "alice" "post" "p2" 15 (list))
+      (feed/activity "bob" "post" "p3" 25 (list))
+      (feed/activity "alice" "like" "p1" 35 (list)))))
+
+(feed-test "actor-counts" (feed/actor-counts A) {:alice 3 :bob 1})
+(feed-test "object-counts" (feed/object-counts A) {:p2 1 :p3 1 :p1 2})
+(feed-test
+  "group-by actor alice len"
+  (len (get (feed/group-by A feed/actor) "alice"))
+  3)
+(feed-test
+  "group-count empty"
+  (feed/group-count feed/empty feed/actor)
+  {})
+
+; day bucketing
+(define
+  D
+  (feed/stream
+    (list
+      (feed/activity "alice" "post" "p1" 5 (list))
+      (feed/activity "alice" "post" "p2" 8 (list))
+      (feed/activity "alice" "post" "p3" 12 (list)))))
+
+(feed-test "feed/day floor" (feed/day 12 10) 1)
+(feed-test "feed/day same bucket" (feed/day 8 10) 0)
+(feed-test "by-actor-day" (feed/by-actor-day D 10) {:alice#0 2 :alice#1 1})
+
+; ---------- recency ----------
+
+(define rec (feed/recency 100 10))
+(feed-test
+  "recency at=now -> 1"
+  (rec (feed/activity "x" "post" "o" 100 (list)))
+  1)
+(feed-test
+  "recency age=hl -> .5"
+  (rec (feed/activity "x" "post" "o" 90 (list)))
+  0.5)
+(feed-test
+  "recency age=2hl -> .25"
+  (rec (feed/activity "x" "post" "o" 80 (list)))
+  0.25)
+
+; ---------- velocity ----------
+
+(define vel (feed/velocity D 10))
+(feed-test
+  "velocity burst (at=12)"
+  (vel (feed/activity "alice" "post" "z" 12 (list)))
+  3)
+(feed-test
+  "velocity mid (at=8)"
+  (vel (feed/activity "alice" "post" "z" 8 (list)))
+  2)
+(feed-test
+  "velocity first (at=5)"
+  (vel (feed/activity "alice" "post" "z" 5 (list)))
+  1)
+(feed-test
+  "velocity other actor"
+  (vel (feed/activity "bob" "post" "z" 12 (list)))
+  0)
+
+; ---------- engagement ----------
+
+(define eng (feed/engagement A))
+(feed-test
+  "engagement p1"
+  (eng (feed/activity "x" "post" "p1" 0 (list)))
+  2)
+(feed-test
+  "engagement p2"
+  (eng (feed/activity "x" "post" "p2" 0 (list)))
+  1)
+
+; ---------- composite ----------
+
+(define
+  cmp1
+  (feed/composite (list (list 2 (fn (a) (get a :at))))))
+(feed-test
+  "composite single part"
+  (cmp1 (feed/activity "x" "post" "o" 5 (list)))
+  10)
+(define
+  cmp2
+  (feed/composite
+    (list
+      (list 2 (fn (a) (get a :at)))
+      (list 3 (fn (a) 1)))))
+(feed-test
+  "composite two parts"
+  (cmp2 (feed/activity "x" "post" "o" 5 (list)))
+  13)
+
+; ---------- ranking ----------
+
+(define
+  R
+  (feed/stream
+    (list
+      (feed/activity "u" "post" "oC" 80 (list))
+      (feed/activity "u" "post" "oA" 100 (list))
+      (feed/activity "u" "post" "oB" 90 (list)))))
+
+(feed-test
+  "rank by recency objects"
+  (map (fn (a) (get a :object)) (feed/items (feed/rank R rec)))
+  (list "oA" "oB" "oC"))
+(feed-test
+  "top-2 by recency"
+  (map (fn (a) (get a :object)) (feed/items (feed/top R rec 2)))
+  (list "oA" "oB"))
+(feed-test "top-2 count" (feed/count (feed/top R rec 2)) 2)
+
+; constant score -> tiebreak by :at descending
+(define
+  T
+  (feed/stream
+    (list
+      (feed/activity "u" "post" "f" 10 (list))
+      (feed/activity "u" "post" "g" 30 (list))
+      (feed/activity "u" "post" "h" 20 (list)))))
+(feed-test
+  "tiebreak at-desc"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/rank T (fn (a) 0))))
+  (list "g" "h" "f"))
+
+; equal score AND equal :at -> stable input order
+(define
+  E
+  (feed/stream
+    (list
+      (feed/activity "u" "post" "first" 50 (list))
+      (feed/activity "u" "post" "second" 50 (list)))))
+(feed-test
+  "stable equal-key input order"
+  (map
+    (fn (a) (get a :object))
+    (feed/items (feed/rank E (fn (a) 0))))
+  (list "first" "second"))
+
+(feed-test
+  "with-scores attaches score"
+  (get (nth (feed/items (feed/with-scores R rec)) 1) :score)
+  1)
+
+(feed-test "rank preserves count" (feed/count (feed/rank A rec)) 4)

lib/feed/tests/thread.sx

@@ -0,0 +1,49 @@
+; Follow-up — conversation threading via :reply-to closure. (feed-test name got expected)
+
+(define
+  S
+  (feed/stream
+    (list
+      (feed/normalize {:actor "a" :object "root" :at 1})
+      (feed/normalize {:actor "b" :object "r1" :at 2 :verb "reply" :reply-to "root"})
+      (feed/normalize {:actor "c" :object "r2" :at 3 :verb "reply" :reply-to "root"})
+      (feed/normalize {:actor "d" :object "r3" :at 4 :verb "reply" :reply-to "r1"})
+      (feed/normalize {:actor "e" :object "x" :at 5}))))
+
+; ---------- direct replies ----------
+
+(feed-test "direct replies to root" (feed/reply-count S "root") 2)
+(feed-test "direct replies to r1" (feed/reply-count S "r1") 1)
+(feed-test "no replies to r3" (feed/reply-count S "r3") 0)
+(feed-test
+  "replies objects to root"
+  (map (fn (a) (get a :object)) (feed/items (feed/replies S "root")))
+  (list "r1" "r2"))
+
+; ---------- thread closure ----------
+
+(feed-test
+  "thread objects root (transitive)"
+  (feed/thread-objects S "root")
+  (list "root" "r1" "r2" "r3"))
+(feed-test
+  "thread root chronological"
+  (map (fn (a) (get a :object)) (feed/items (feed/thread S "root")))
+  (list "root" "r1" "r2" "r3"))
+(feed-test "thread size root" (feed/thread-size S "root") 4)
+(feed-test
+  "thread excludes unrelated x"
+  (feed/-elem?
+    "x"
+    (map (fn (a) (get a :object)) (feed/items (feed/thread S "root"))))
+  false)
+
+; ---------- sub-thread ----------
+
+(feed-test
+  "thread from r1 (sub-tree)"
+  (map (fn (a) (get a :object)) (feed/items (feed/thread S "r1")))
+  (list "r1" "r3"))
+(feed-test "thread size r1" (feed/thread-size S "r1") 2)
+(feed-test "leaf thread is itself" (feed/thread-size S "r3") 1)
+(feed-test "unrelated thread is itself" (feed/thread-size S "x") 1)

lib/feed/tests/trending.sx

@@ -0,0 +1,82 @@
+; Follow-up — trending objects/actors by recent activity. (feed-test name got expected)
+
+; window (50,100]: X@60,X@70 (a), Y@80 (b), Z@90 (c); W@40 is too old
+(define
+  S
+  (feed/stream
+    (list
+      (feed/activity "a" "post" "X" 60 (list))
+      (feed/activity "a" "post" "X" 70 (list))
+      (feed/activity "b" "post" "Y" 80 (list))
+      (feed/activity "c" "post" "Z" 90 (list))
+      (feed/activity "d" "post" "W" 40 (list)))))
+
+; ---------- trending objects ----------
+
+(feed-test
+  "trending count (3 in window)"
+  (len (feed/trending S 100 50 10))
+  3)
+(feed-test
+  "trending top object"
+  (get
+    (nth (feed/trending S 100 50 10) 0)
+    :object)
+  "X")
+(feed-test
+  "trending top count"
+  (get
+    (nth (feed/trending S 100 50 10) 0)
+    :count)
+  2)
+(feed-test
+  "trending order (count desc, key asc tiebreak)"
+  (map
+    (fn (e) (get e :object))
+    (feed/trending S 100 50 10))
+  (list "X" "Y" "Z"))
+(feed-test
+  "trending top-2"
+  (map
+    (fn (e) (get e :object))
+    (feed/trending S 100 50 2))
+  (list "X" "Y"))
+(feed-test
+  "old object W excluded"
+  (feed/-elem?
+    "W"
+    (map
+      (fn (e) (get e :object))
+      (feed/trending S 100 50 10)))
+  false)
+(feed-test
+  "narrow window keeps only newest"
+  (map
+    (fn (e) (get e :object))
+    (feed/trending S 100 15 10))
+  (list "Z"))
+(feed-test
+  "empty window -> nothing"
+  (feed/trending S 100 5 10)
+  (list))
+
+; ---------- trending actors ----------
+
+(feed-test
+  "trending actor top"
+  (get
+    (nth (feed/trending-actors S 100 50 10) 0)
+    :actor)
+  "a")
+(feed-test
+  "trending actor count"
+  (get
+    (nth (feed/trending-actors S 100 50 10) 0)
+    :count)
+  2)
+(feed-test
+  "trending actors order"
+  (map
+    (fn (e) (get e :actor))
+    (feed/trending-actors S 100 50 10))
+  (list "a" "b" "c"))

lib/feed/thread.sx

@@ -0,0 +1,59 @@
+; feed/thread — conversation threading. A reply carries :reply-to <parent-object>
+; (normalize preserves it). A thread is the transitive closure over :reply-to from
+; a root object: root + replies + replies-to-replies, gathered chronologically.
+;
+; Requires: lib/feed/normalize.sx, lib/feed/stream.sx, lib/feed/fanout.sx
+; (feed/-elem?, feed/-distinct).
+
+; direct replies to an object
+(define
+  feed/replies
+  (fn
+    (stream object)
+    (feed/filter stream (fn (a) (equal? (get a :reply-to) object)))))
+
+(define
+  feed/reply-count
+  (fn (stream object) (feed/count (feed/replies stream object))))
+
+; iterate f from x until the result stops growing (set-closure fixpoint)
+(define
+  feed/-fixpoint
+  (fn
+    (f x)
+    (let
+      ((nx (f x)))
+      (if (= (len nx) (len x)) x (feed/-fixpoint f nx)))))
+
+; the set of object-ids in the thread rooted at `root`
+(define
+  feed/thread-objects
+  (fn
+    (stream root)
+    (let
+      ((all (feed/items stream)))
+      (feed/-fixpoint
+        (fn
+          (acc)
+          (feed/-distinct
+            (append
+              acc
+              (map
+                (fn (a) (get a :object))
+                (filter (fn (a) (feed/-elem? (get a :reply-to) acc)) all)))))
+        (list root)))))
+
+; the full thread as a chronological stream (root + all descendants)
+(define
+  feed/thread
+  (fn
+    (stream root)
+    (let
+      ((objs (feed/thread-objects stream root)))
+      (feed/sort-by-at
+        (feed/filter stream (fn (a) (feed/-elem? (get a :object) objs)))))))
+
+; how many activities are in the thread (root counts as 1)
+(define
+  feed/thread-size
+  (fn (stream root) (feed/count (feed/thread stream root))))

lib/feed/trending.sx

@@ -0,0 +1,42 @@
+; feed/trending — what's hot right now: objects (or actors) ranked by activity
+; count within a recency window. Deterministic: count descending, ties broken by
+; key ascending (entries are pre-sorted by key, then stable grade-down by count).
+;
+; Requires: lib/feed/stream.sx, lib/feed/aggregate.sx (object/actor-counts),
+; lib/feed/rank.sx (feed/-desc-by).
+
+; activities within (now-window, now]
+(define
+  feed/-recent
+  (fn
+    (stream now window)
+    (feed/filter
+      stream
+      (fn (a) (and (<= (get a :at) now) (> (get a :at) (- now window)))))))
+
+; counts dict -> top-N entries {label key, :count n}, count desc, key asc
+(define
+  feed/-top-counts
+  (fn
+    (counts label n)
+    (let
+      ((entries (map (fn (k) (assoc {:count (get counts k)} label k)) (sort (keys counts)))))
+      (take (feed/-desc-by entries (fn (e) (get e :count))) n))))
+
+; top-N trending objects in the window
+(define
+  feed/trending
+  (fn
+    (stream now window n)
+    (feed/-top-counts
+      (feed/object-counts (feed/-recent stream now window))
+      :object n)))
+
+; top-N most active actors in the window
+(define
+  feed/trending-actors
+  (fn
+    (stream now window n)
+    (feed/-top-counts
+      (feed/actor-counts (feed/-recent stream now window))
+      :actor n)))

lib/mod/activity.sx

@@ -1,40 +0,0 @@
-;; lib/mod/activity.sx — export decisions as ActivityPub-shaped events.
-;;
-;; The rose-ash platform propagates cross-domain effects as ActivityPub-shaped
-;; activities. A moderation decision maps to a moderation verb so the rest of the
-;; platform (and federated peers) can act on it: remove→Delete, ban→Block,
-;; hide/escalate→Flag, keep→no activity. The precise mod action is preserved in
-;; :action so a consumer can disambiguate (e.g. hide vs escalate, both Flag).
-
-(define
-  mod/action->verb
-  (fn
-    (action)
-    (cond
-      ((= action "remove") "Delete")
-      ((= action "ban") "Block")
-      ((= action "hide") "Flag")
-      ((= action "escalate") "Flag")
-      (true nil))))
-
-(define
-  mod/decision->activity
-  (fn
-    (d actor)
-    (let
-      ((verb (mod/action->verb (get d :action))))
-      (if (nil? verb) nil {:type verb :action (get d :action) :actor actor :summary (str "moderation/" (get d :action) " via " (get d :rule)) :object (get d :report-id) :rule (get d :rule)}))))
-
-;; map a batch of decisions to activities, dropping the no-op keeps
-(define
-  mod/decisions->activities
-  (fn
-    (decisions actor)
-    (reduce
-      (fn
-        (acc d)
-        (let
-          ((a (mod/decision->activity d actor)))
-          (if (nil? a) acc (append acc (list a)))))
-      (list)
-      decisions)))

lib/mod/api.sx

@@ -1,163 +0,0 @@
-;; lib/mod/api.sx — report registry + lifecycle façade + public entry points.
-;;
-;; mod/report files a report (assigning a sequential id) and opens a lifecycle
-;; case for it; mod/add-evidence accumulates evidence; mod/decide runs the engine
-;; and commits to the audit log. The lifecycle façade (mod/triage, mod/resolve,
-;; mod/review, mod/appeal, mod/finalize) drives the per-report case through its
-;; states, logging each committed decision to the audit trail.
-
-(define mod/*reports* (list))
-(define mod/*cases* (list))
-(define mod/*counter* 0)
-(define mod/*rules* mod/default-rules)
-
-(define
-  mod/reset!
-  (fn
-    ()
-    (begin
-      (set! mod/*reports* (list))
-      (set! mod/*cases* (list))
-      (set! mod/*counter* 0)
-      (mod/audit-reset!))))
-
-(define
-  mod/report
-  (fn
-    (by about reason)
-    (begin
-      (set! mod/*counter* (+ mod/*counter* 1))
-      (let
-        ((id (str "r" mod/*counter*)))
-        (let
-          ((r (mod/mk-report id by about reason)))
-          (begin
-            (append! mod/*reports* r)
-            (append! mod/*cases* {:id id :case (mod/mk-case r)})
-            r))))))
-
-(define
-  mod/get-report
-  (fn
-    (id)
-    (reduce
-      (fn (acc r) (if (= (mod/report-id r) id) r acc))
-      nil
-      mod/*reports*)))
-
-(define
-  mod/add-evidence
-  (fn
-    (id kind val)
-    (let
-      ((r (mod/get-report id)))
-      (if
-        (nil? r)
-        nil
-        (let
-          ((updated (mod/attach-evidence r (mod/mk-evidence kind val))))
-          (begin
-            (set!
-              mod/*reports*
-              (map
-                (fn (x) (if (= (mod/report-id x) id) updated x))
-                mod/*reports*))
-            updated))))))
-
-(define
-  mod/decide
-  (fn
-    (id)
-    (let
-      ((r (mod/get-report id)))
-      (if
-        (nil? r)
-        nil
-        (let
-          ((d (mod/decide-report r mod/*reports* mod/*rules*)))
-          (begin (mod/log-decision! d (mod/report-evidence r)) d))))))
-
-;; ── lifecycle façade over the case registry ──
-
-(define
-  mod/case-of
-  (fn
-    (id)
-    (reduce
-      (fn (acc rec) (if (= (get rec :id) id) (get rec :case) acc))
-      nil
-      mod/*cases*)))
-
-(define
-  mod/case-store!
-  (fn
-    (id c)
-    (set!
-      mod/*cases*
-      (map
-        (fn (rec) (if (= (get rec :id) id) {:id id :case c} rec))
-        mod/*cases*))))
-
-;; apply a lifecycle op to the stored case, persist it, and (when a decision was
-;; committed cleanly) append it to the audit log; returns the updated case
-(define
-  mod/case-apply!
-  (fn
-    (id op log?)
-    (let
-      ((c (mod/case-of id)))
-      (if
-        (nil? c)
-        nil
-        (let
-          ((c2 (op c)))
-          (begin
-            (mod/case-store! id c2)
-            (when
-              log?
-              (when
-                (nil? (mod/case-error c2))
-                (let
-                  ((d (mod/case-decision c2)))
-                  (if
-                    (nil? d)
-                    nil
-                    (mod/log-decision!
-                      d
-                      (mod/report-evidence (mod/case-report c2)))))))
-            c2))))))
-
-(define
-  mod/triage
-  (fn
-    (id)
-    (mod/case-apply!
-      id
-      (fn (c) (mod/case-triage c mod/*reports* mod/*rules*))
-      false)))
-
-(define
-  mod/resolve
-  (fn (id) (mod/case-apply! id (fn (c) (mod/case-resolve c)) true)))
-
-(define
-  mod/review
-  (fn
-    (id kind val)
-    (mod/case-apply!
-      id
-      (fn (c) (mod/case-review c kind val mod/*reports* mod/*rules*))
-      true)))
-
-(define
-  mod/appeal
-  (fn
-    (id kind val)
-    (mod/case-apply!
-      id
-      (fn (c) (mod/case-appeal c kind val mod/*reports* mod/*rules*))
-      true)))
-
-(define
-  mod/finalize
-  (fn (id) (mod/case-apply! id (fn (c) (mod/case-finalize c)) false)))

lib/mod/audit.sx

@@ -1,54 +0,0 @@
-;; lib/mod/audit.sx — append-only decision log.
-;;
-;; Every decision the api commits is recorded as an immutable audit entry holding
-;; the decision (action + matching rule), the proof tree (the derivation that
-;; justified it), and a snapshot of the evidence in force at decision time. The
-;; log is append-only: entries are never mutated or removed, only appended, each
-;; with a monotonic sequence number. Retrieval is by report id (full history) or
-;; by sequence.
-
-(define mod/*audit-log* (list))
-(define mod/*audit-seq* 0)
-
-(define
-  mod/audit-reset!
-  (fn
-    ()
-    (begin (set! mod/*audit-log* (list)) (set! mod/*audit-seq* 0))))
-
-(define mod/mk-audit-entry (fn (seq decision evidence-snapshot) {:action (get decision :action) :evidence evidence-snapshot :proof (get decision :proof) :rule (get decision :rule) :report-id (get decision :report-id) :seq seq}))
-
-(define
-  mod/log-decision!
-  (fn
-    (decision evidence-snapshot)
-    (begin
-      (set! mod/*audit-seq* (+ mod/*audit-seq* 1))
-      (let
-        ((entry (mod/mk-audit-entry mod/*audit-seq* decision evidence-snapshot)))
-        (begin (append! mod/*audit-log* entry) entry)))))
-
-;; entries for one report, in chronological (sequence) order
-(define
-  mod/audit
-  (fn
-    (id)
-    (reduce
-      (fn
-        (acc e)
-        (if (= (get e :report-id) id) (append acc (list e)) acc))
-      (list)
-      mod/*audit-log*)))
-
-(define mod/audit-all (fn () mod/*audit-log*))
-(define mod/audit-count (fn () (len mod/*audit-log*)))
-
-;; most recent decision logged for a report (nil if none)
-(define
-  mod/audit-latest
-  (fn
-    (id)
-    (reduce
-      (fn (acc e) (if (= (get e :report-id) id) e acc))
-      nil
-      mod/*audit-log*)))

lib/mod/batch.sx

@@ -1,55 +0,0 @@
-;; lib/mod/batch.sx — batch triage + corpus analytics.
-;;
-;; Operational layer: decide a whole queue of reports at once, summarize the
-;; outcomes by action, and measure which rules actually fire across a corpus.
-;; mod/never-fired is the empirical complement to lint's static unreachable check
-;; (Ext 5): lint finds rules that CAN'T fire by structure; never-fired finds rules
-;; that DIDN'T fire on real data.
-
-(define
-  mod/decide-batch
-  (fn
-    (reports rules)
-    (map (fn (r) (mod/decide-report r reports rules)) reports)))
-
-(define
-  mod/count-action
-  (fn
-    (decisions action)
-    (reduce
-      (fn (acc d) (if (= (get d :action) action) (+ acc 1) acc))
-      0
-      decisions)))
-
-(define mod/action-histogram (fn (decisions) {:keep (mod/count-action decisions "keep") :remove (mod/count-action decisions "remove") :escalate (mod/count-action decisions "escalate") :hide (mod/count-action decisions "hide") :ban (mod/count-action decisions "ban")}))
-
-(define
-  mod/rule-fire-count
-  (fn
-    (decisions rule-name)
-    (reduce
-      (fn (acc d) (if (= (get d :rule) rule-name) (+ acc 1) acc))
-      0
-      decisions)))
-
-(define
-  mod/rule-coverage
-  (fn
-    (reports rules)
-    (let
-      ((decisions (mod/decide-batch reports rules)))
-      (map (fn (rule) {:rule (mod/rule-name rule) :fired (mod/rule-fire-count decisions (mod/rule-name rule))}) rules))))
-
-(define
-  mod/never-fired
-  (fn
-    (reports rules)
-    (reduce
-      (fn
-        (acc c)
-        (if
-          (= (get c :fired) 0)
-          (append acc (list (get c :rule)))
-          acc))
-      (list)
-      (mod/rule-coverage reports rules))))

lib/mod/conformance.conf

@@ -1,60 +0,0 @@
-# Mod conformance config — sourced by lib/guest/conformance.sh.
-
-LANG_NAME=mod
-MODE=dict
-
-PRELOADS=(
-  lib/guest/pratt.sx
-  lib/prolog/tokenizer.sx
-  lib/prolog/parser.sx
-  lib/prolog/runtime.sx
-  lib/prolog/query.sx
-  lib/prolog/compiler.sx
-  lib/mod/schema.sx
-  lib/mod/policy.sx
-  lib/mod/defrule.sx
-  lib/mod/engine.sx
-  lib/mod/explain.sx
-  lib/mod/severity.sx
-  lib/mod/offenders.sx
-  lib/mod/quorum.sx
-  lib/mod/trace.sx
-  lib/mod/whatif.sx
-  lib/mod/batch.sx
-  lib/mod/temporal.sx
-  lib/mod/sla.sx
-  lib/mod/wire.sx
-  lib/mod/activity.sx
-  lib/mod/policies.sx
-  lib/mod/pipeline.sx
-  lib/mod/lifecycle.sx
-  lib/mod/audit.sx
-  lib/mod/api.sx
-  lib/mod/fed.sx
-  lib/mod/link.sx
-  lib/mod/lint.sx
-)
-
-SUITES=(
-  "decide:lib/mod/tests/decide.sx:(mod-decide-tests-run!)"
-  "audit:lib/mod/tests/audit.sx:(mod-audit-tests-run!)"
-  "escalation:lib/mod/tests/escalation.sx:(mod-escalation-tests-run!)"
-  "fed:lib/mod/tests/fed.sx:(mod-fed-tests-run!)"
-  "extensions:lib/mod/tests/extensions.sx:(mod-extensions-tests-run!)"
-  "link:lib/mod/tests/link.sx:(mod-link-tests-run!)"
-  "lint:lib/mod/tests/lint.sx:(mod-lint-tests-run!)"
-  "severity:lib/mod/tests/severity.sx:(mod-severity-tests-run!)"
-  "offenders:lib/mod/tests/offenders.sx:(mod-offenders-tests-run!)"
-  "quorum:lib/mod/tests/quorum.sx:(mod-quorum-tests-run!)"
-  "trace:lib/mod/tests/trace.sx:(mod-trace-tests-run!)"
-  "whatif:lib/mod/tests/whatif.sx:(mod-whatif-tests-run!)"
-  "batch:lib/mod/tests/batch.sx:(mod-batch-tests-run!)"
-  "temporal:lib/mod/tests/temporal.sx:(mod-temporal-tests-run!)"
-  "sla:lib/mod/tests/sla.sx:(mod-sla-tests-run!)"
-  "wire:lib/mod/tests/wire.sx:(mod-wire-tests-run!)"
-  "disjunction:lib/mod/tests/disjunction.sx:(mod-disjunction-tests-run!)"
-  "activity:lib/mod/tests/activity.sx:(mod-activity-tests-run!)"
-  "policies:lib/mod/tests/policies.sx:(mod-policies-tests-run!)"
-  "defrule:lib/mod/tests/defrule.sx:(mod-defrule-tests-run!)"
-  "pipeline:lib/mod/tests/pipeline.sx:(mod-pipeline-tests-run!)"
-)

lib/mod/conformance.sh

@@ -1,3 +0,0 @@
-#!/usr/bin/env bash
-# Thin wrapper — see lib/guest/conformance.sh and lib/mod/conformance.conf.
-exec bash "$(dirname "$0")/../guest/conformance.sh" "$(dirname "$0")/conformance.conf" "$@"

lib/mod/defrule.sx

@@ -1,16 +0,0 @@
-;; lib/mod/defrule.sx — ergonomic rule / ruleset construction.
-;;
-;; The roadmap sketched a (defrule action :when conditions) surface. Conditions
-;; already evaluate to plain data, so this needs no macro — variadic functions
-;; suffice: mod/defrule collects its trailing condition forms via &rest (dropping
-;; the explicit outer (list ...)), and mod/ruleset assembles rules the same way.
-;;
-;;   (mod/ruleset
-;;     (mod/defrule "spam-hide" :hide (list :classification "spam"))
-;;     (mod/defrule "default-keep" :keep))
-
-(define
-  mod/defrule
-  (fn (name action &rest conds) (mod/mk-rule name action conds)))
-
-(define mod/ruleset (fn (&rest rules) rules))

lib/mod/engine.sx

@@ -1,64 +0,0 @@
-;; lib/mod/engine.sx — decide a report by querying the policy program.
-;;
-;; build-program assembles the report's facts plus the compiled policy clauses;
-;; decide-report runs the Prolog query and returns a decision. A decision is a
-;; proof, not a bare keyword: it carries the matching rule, the conditions it
-;; required, the evidence that satisfied them, and a derivation — the proof tree.
-;;
-;; The proof tree is built constructively: for the matching rule, each body goal
-;; is re-queried against the same DB with the report id bound, recording the goal
-;; text, whether it was solved, and the bindings that satisfied it. That is a
-;; genuine derivation drawn from the Prolog database, ready for the audit trail.
-
-(define
-  mod/find-rule
-  (fn
-    (rules name)
-    (reduce
-      (fn
-        (acc r)
-        (if (nil? acc) (if (= (mod/rule-name r) name) r acc) acc))
-      nil
-      rules)))
-
-(define
-  mod/build-program
-  (fn
-    (r count rules)
-    (str (mod/report-facts r count) "\n" (mod/rules->program rules))))
-
-(define
-  mod/proof-goals
-  (fn
-    (db id conds)
-    (if
-      (empty? conds)
-      (list {:solved true :goal "true" :bindings {}})
-      (map
-        (fn
-          (c)
-          (let
-            ((g (mod/cond->goal c id)))
-            (let ((sols (pl-query-all db g))) {:solved (if (empty? sols) false true) :goal g :bindings (if (empty? sols) {} (first sols))})))
-        conds))))
-
-(define
-  mod/decide-report
-  (fn
-    (r reports rules)
-    (let
-      ((count (mod/report-count (mod/report-about r) reports))
-        (kinds (mod/classify-keywords r))
-        (id (mod/report-id r)))
-      (let
-        ((program (mod/build-program r count rules)))
-        (let
-          ((db (pl-load program)))
-          (let
-            ((sol (pl-query-one db (str "policy_action(" id ", Action, Rule)"))))
-            (if
-              (nil? sol)
-              {:action "keep" :proof {:goals (list) :evidence kinds :conditions (list) :rule "none" :count count} :report-id id :rule "none"}
-              (let
-                ((rname (dict-get sol "Rule")))
-                (let ((rule (mod/find-rule rules rname))) {:action (mod/rule-action rule) :proof {:goals (mod/proof-goals db id (mod/rule-when rule)) :evidence kinds :conditions (mod/rule-when rule) :rule rname :count count} :report-id id :rule rname})))))))))

lib/mod/explain.sx

@@ -1,55 +0,0 @@
-;; lib/mod/explain.sx — human-readable proof explanation.
-;;
-;; Turns a decision (from mod/decide-report, or any audit entry) into a readable
-;; multi-line "why": the action, the rule that fired, the evidence in play, and
-;; the derivation goal-by-goal with [proved]/[unproved] marks and the unification
-;; bindings that satisfied each goal. Pure SX over the Phase-2 proof tree.
-
-(define
-  mod/explain-binds
-  (fn
-    (binds)
-    (mod/join-with
-      ", "
-      (map (fn (k) (str k "=" (dict-get binds k))) (keys binds)))))
-
-(define
-  mod/explain-goal
-  (fn
-    (g)
-    (let
-      ((mark (if (get g :solved) "  [proved] " "  [unproved] "))
-        (binds (get g :bindings)))
-      (if
-        (empty? (keys binds))
-        (str mark (get g :goal))
-        (str mark (get g :goal) "  {" (mod/explain-binds binds) "}")))))
-
-(define
-  mod/explain-evidence
-  (fn
-    (evidence)
-    (if
-      (empty? evidence)
-      "Evidence: (none)"
-      (str "Evidence: " (mod/join-with ", " evidence)))))
-
-(define
-  mod/explain
-  (fn
-    (decision)
-    (let
-      ((id (get decision :report-id))
-        (action (get decision :action))
-        (rule (get decision :rule))
-        (proof (get decision :proof)))
-      (let
-        ((goals (get proof :goals)) (evidence (get proof :evidence)))
-        (mod/join-with
-          "\n"
-          (append
-            (list
-              (str "Report " id ": " action " (rule: " rule ")")
-              (mod/explain-evidence evidence)
-              "Because:")
-            (map mod/explain-goal goals)))))))

lib/mod/fed.sx

@@ -1,145 +0,0 @@
-;; lib/mod/fed.sx — federation: cross-instance reports, decision sharing, trust,
-;; revocation. fed-sx itself is mocked here (an in-memory outbox); the real wire
-;; transport would replace mod/fed-send!.
-;;
-;; Trust is advisory by default (the hard rule): a peer's decision only binds
-;; locally when (mod/trusted? peer :mod) holds. An untrusted peer's decision is
-;; recorded as a suggestion in the advisory log and is NOT applied. Local
-;; decisions propagate outward via the outbox. Revocation undoes a locally
-;; applied action when its proof is invalidated, notifying the origin peer.
-
-(define mod/*fed-trust* (list))     ;; {:peer :scope}
-(define mod/*fed-outbox* (list))    ;; {:to :type :payload}
-(define mod/*fed-advisory* (list))  ;; {:peer :decision} — received, not applied
-(define mod/*fed-applied* (list))   ;; {:report-id :action :origin :revoked}
-(define mod/*fed-origins* (list))   ;; {:id :origin}
-
-(define
-  mod/fed-reset!
-  (fn
-    ()
-    (begin
-      (set! mod/*fed-trust* (list))
-      (set! mod/*fed-outbox* (list))
-      (set! mod/*fed-advisory* (list))
-      (set! mod/*fed-applied* (list))
-      (set! mod/*fed-origins* (list)))))
-
-;; ── trust model ──
-
-(define
-  mod/trust-match?
-  (fn
-    (t peer scope)
-    (if (= (get t :peer) peer) (= (get t :scope) scope) false)))
-
-(define
-  mod/grant-trust
-  (fn (peer scope) (begin (append! mod/*fed-trust* {:scope scope :peer peer}) true)))
-
-(define
-  mod/revoke-trust
-  (fn
-    (peer scope)
-    (set!
-      mod/*fed-trust*
-      (reduce
-        (fn
-          (acc t)
-          (if (mod/trust-match? t peer scope) acc (append acc (list t))))
-        (list)
-        mod/*fed-trust*))))
-
-(define
-  mod/trusted?
-  (fn
-    (peer scope)
-    (mod/any? (fn (t) (mod/trust-match? t peer scope)) mod/*fed-trust*)))
-
-;; ── cross-instance reports ──
-
-(define
-  mod/fed-receive-report
-  (fn
-    (peer by about reason)
-    (let
-      ((r (mod/report by about reason)))
-      (begin (append! mod/*fed-origins* {:id (mod/report-id r) :origin peer}) r))))
-
-(define
-  mod/report-origin
-  (fn
-    (id)
-    (reduce
-      (fn (acc o) (if (= (get o :id) id) (get o :origin) acc))
-      "local"
-      mod/*fed-origins*)))
-
-;; ── decision sharing (mock fed-sx send) ──
-
-(define
-  mod/fed-send!
-  (fn (to type payload) (begin (append! mod/*fed-outbox* {:type type :to to :payload payload}) true)))
-
-(define mod/fed-outbox (fn () mod/*fed-outbox*))
-
-(define
-  mod/fed-share-decision
-  (fn
-    (decision peers)
-    (reduce
-      (fn
-        (acc p)
-        (begin (mod/fed-send! p "decision" decision) (append acc (list p))))
-      (list)
-      peers)))
-
-;; ── receiving a peer's decision (advisory unless trusted) ──
-
-(define
-  mod/fed-applied-action
-  (fn
-    (report-id)
-    (reduce
-      (fn (acc a) (if (= (get a :report-id) report-id) a acc))
-      nil
-      mod/*fed-applied*)))
-
-(define
-  mod/fed-receive-decision
-  (fn
-    (peer decision)
-    (if
-      (mod/trusted? peer :mod)
-      (begin (append! mod/*fed-applied* {:revoked false :action (get decision :action) :report-id (get decision :report-id) :origin peer}) {:advisory false :peer peer :applied true :decision decision})
-      (begin (append! mod/*fed-advisory* {:peer peer :decision decision}) {:advisory true :peer peer :applied false :decision decision}))))
-
-;; ── revocation ──
-
-(define
-  mod/fed-revoke!
-  (fn
-    (report-id reason)
-    (begin
-      (set!
-        mod/*fed-applied*
-        (map
-          (fn (a) (if (= (get a :report-id) report-id) {:revoked true :action (get a :action) :report-id (get a :report-id) :origin (get a :origin)} a))
-          mod/*fed-applied*))
-      (mod/fed-send! (mod/report-origin report-id) "revocation" {:report-id report-id :reason reason})
-      report-id)))
-
-;; re-run the engine; if the action no longer holds, the prior decision's proof
-;; is invalidated — revoke the applied moderation.
-(define
-  mod/fed-revoke-if-invalidated
-  (fn
-    (report decision reports rules)
-    (let
-      ((d2 (mod/decide-report report reports rules)))
-      (if
-        (= (get d2 :action) (get decision :action))
-        {:revoked false :decision d2}
-        (begin
-          (mod/fed-revoke! (get decision :report-id) "proof invalidated")
-          {:revoked true :decision d2})))))

lib/mod/lifecycle.sx

@@ -1,160 +0,0 @@
-;; lib/mod/lifecycle.sx — report lifecycle state machine (pure SX over the engine).
-;;
-;; Lifecycle state is deliberately separate from policy: the Prolog rules answer
-;; "what action?", this module answers "where in the process is this report?".
-;;
-;;   :open ──triage──▶ :triaged ──resolve/review──▶ :decided ──appeal──▶ :appealed
-;;                                                      │                    │
-;;                                                      └────finalize───▶ :final ◀┘
-;;
-;; A case is an immutable value {:report :state :decision :tier :error :history}.
-;; Every transition returns a NEW case; illegal transitions return the case
-;; unchanged with :error set. Tiers: triage runs the engine (auto-tier); a
-;; terminal action (hide/remove/keep) resolves immediately, an :escalate action
-;; flags the case for human review (human-tier) before it can be resolved.
-
-(define mod/case* (fn (report state decision tier err history) {:history history :state state :report report :error err :tier tier :decision decision}))
-
-(define
-  mod/mk-case
-  (fn (report) (mod/case* report "open" nil nil nil (list))))
-
-(define mod/case-report (fn (c) (get c :report)))
-(define mod/case-state (fn (c) (get c :state)))
-(define mod/case-decision (fn (c) (get c :decision)))
-(define mod/case-tier (fn (c) (get c :tier)))
-(define mod/case-error (fn (c) (get c :error)))
-(define mod/case-history (fn (c) (get c :history)))
-
-;; ── transition table ──
-
-(define mod/lc-transitions {:final (list) :appealed (list "final") :decided (list "appealed" "final") :open (list "triaged") :triaged (list "decided")})
-
-(define mod/member? (fn (x lst) (mod/any? (fn (y) (= y x)) lst)))
-
-(define
-  mod/lc-can-transition?
-  (fn
-    (from to)
-    (let
-      ((outs (get mod/lc-transitions from)))
-      (if (nil? outs) false (mod/member? to outs)))))
-
-;; ── core transition: validate, record history, or flag :error ──
-
-(define
-  mod/case-goto
-  (fn
-    (c to note report decision tier)
-    (let
-      ((from (mod/case-state c)))
-      (if
-        (mod/lc-can-transition? from to)
-        (mod/case*
-          report
-          to
-          decision
-          tier
-          nil
-          (append (mod/case-history c) (list {:note note :to to :from from})))
-        (mod/case*
-          (mod/case-report c)
-          from
-          (mod/case-decision c)
-          (mod/case-tier c)
-          (str "illegal transition: " from " -> " to)
-          (mod/case-history c))))))
-
-(define
-  mod/case-error-set
-  (fn
-    (c msg)
-    (mod/case*
-      (mod/case-report c)
-      (mod/case-state c)
-      (mod/case-decision c)
-      (mod/case-tier c)
-      msg
-      (mod/case-history c))))
-
-;; ── lifecycle operations ──
-
-;; :open → :triaged — run the auto-tier first pass.
-(define
-  mod/case-triage
-  (fn
-    (c reports rules)
-    (let
-      ((d (mod/decide-report (mod/case-report c) reports rules)))
-      (let
-        ((tier (if (= (get d :action) "escalate") "human" "auto")))
-        (mod/case-goto
-          c
-          "triaged"
-          "auto-tier first pass"
-          (mod/case-report c)
-          d
-          tier)))))
-
-;; :triaged → :decided — auto-tier resolves; human-tier is blocked until review.
-(define
-  mod/case-resolve
-  (fn
-    (c)
-    (if
-      (= (mod/case-tier c) "human")
-      (mod/case-error-set c "awaiting human review (escalated)")
-      (mod/case-goto
-        c
-        "decided"
-        "auto-tier resolved"
-        (mod/case-report c)
-        (mod/case-decision c)
-        (mod/case-tier c)))))
-
-;; :triaged → :decided — human review: attach evidence, re-decide, resolve.
-(define
-  mod/case-review
-  (fn
-    (c kind val reports rules)
-    (let
-      ((nr (mod/attach-evidence (mod/case-report c) (mod/mk-evidence kind val))))
-      (let
-        ((d (mod/decide-report nr reports rules)))
-        (mod/case-goto c "decided" (str "human review: " kind) nr d "human")))))
-
-;; :decided → :appealed — appeal: attach evidence, re-decide (may override).
-(define
-  mod/case-appeal
-  (fn
-    (c kind val reports rules)
-    (let
-      ((nr (mod/attach-evidence (mod/case-report c) (mod/mk-evidence kind val))))
-      (let
-        ((d (mod/decide-report nr reports rules)))
-        (mod/case-goto
-          c
-          "appealed"
-          (str "appeal: " kind)
-          nr
-          d
-          (mod/case-tier c))))))
-
-;; :decided | :appealed → :final
-(define
-  mod/case-finalize
-  (fn
-    (c)
-    (mod/case-goto
-      c
-      "final"
-      "finalized"
-      (mod/case-report c)
-      (mod/case-decision c)
-      (mod/case-tier c))))
-
-(define
-  mod/case-action
-  (fn
-    (c)
-    (let ((d (mod/case-decision c))) (if (nil? d) nil (get d :action)))))

lib/mod/link.sx

@@ -1,92 +0,0 @@
-;; lib/mod/link.sx — report linking + deduplication.
-;;
-;; Reports about the same subject form a cluster; identical reports (same
-;; reporter + subject + reason) are duplicates. Linking is Prolog-backed: all
-;; report facts are loaded and related ids are found by unification — the same
-;; relational substrate the policy engine uses, here for retrieval rather than
-;; decision. Dedup is pure SX over a normalized link key.
-
-(define
-  mod/link-key
-  (fn
-    (r)
-    (str
-      (mod/report-by r)
-      "|"
-      (mod/report-about r)
-      "|"
-      (downcase (mod/report-reason r)))))
-
-(define
-  mod/dedup-reports
-  (fn
-    (reports)
-    (reduce
-      (fn
-        (acc r)
-        (if
-          (mod/any? (fn (x) (= (mod/link-key x) (mod/link-key r))) acc)
-          acc
-          (append acc (list r))))
-      (list)
-      reports)))
-
-(define
-  mod/duplicate-count
-  (fn (reports) (- (len reports) (len (mod/dedup-reports reports)))))
-
-;; ── Prolog-backed relational retrieval ──
-
-(define
-  mod/report-rel-facts
-  (fn
-    (reports)
-    (mod/join-with
-      "\n"
-      (map
-        (fn
-          (r)
-          (str
-            "report("
-            (mod/report-id r)
-            ", "
-            (mod/pl-quote (mod/report-by r))
-            ", "
-            (mod/pl-quote (mod/report-about r))
-            ")."))
-        reports))))
-
-(define
-  mod/related-ids
-  (fn
-    (subject reports)
-    (let
-      ((db (pl-load (mod/report-rel-facts reports))))
-      (map
-        (fn (sol) (dict-get sol "Id"))
-        (pl-query-all db (str "report(Id, _, " (mod/pl-quote subject) ")"))))))
-
-(define
-  mod/reporters-of
-  (fn
-    (subject reports)
-    (let
-      ((db (pl-load (mod/report-rel-facts reports))))
-      (map
-        (fn (sol) (dict-get sol "By"))
-        (pl-query-all db (str "report(_, By, " (mod/pl-quote subject) ")"))))))
-
-(define
-  mod/distinct
-  (fn
-    (items)
-    (reduce
-      (fn
-        (acc x)
-        (if (mod/any? (fn (y) (= y x)) acc) acc (append acc (list x))))
-      (list)
-      items)))
-
-(define
-  mod/distinct-reporters-of
-  (fn (subject reports) (mod/distinct (mod/reporters-of subject reports))))

lib/mod/lint.sx

@@ -1,69 +0,0 @@
-;; lib/mod/lint.sx — static analysis of a policy rule set.
-;;
-;; Because precedence is "first matching clause wins" (pl-query-one), the rule
-;; order has correctness consequences a moderator can get wrong: a rule placed
-;; after an unconditional (empty :when) rule can never fire, and a rule set with
-;; no unconditional rule may leave some reports undecided. lint-rules surfaces
-;; these without running the engine.
-
-(define mod/rule-unconditional? (fn (r) (empty? (mod/rule-when r))))
-
-;; names of rules that follow the first unconditional rule — structurally dead,
-;; since the unconditional rule always matches first
-(define
-  mod/unreachable-rules
-  (fn
-    (rules)
-    (get
-      (reduce
-        (fn
-          (acc r)
-          (if
-            (get acc :hit)
-            {:dead (append (get acc :dead) (list (mod/rule-name r))) :hit true}
-            (if (mod/rule-unconditional? r) {:dead (get acc :dead) :hit true} acc)))
-        {:dead (list) :hit false}
-        rules)
-      :dead)))
-
-(define
-  mod/has-catchall?
-  (fn (rules) (mod/any? mod/rule-unconditional? rules)))
-
-(define
-  mod/count-eq
-  (fn
-    (x lst)
-    (reduce (fn (a y) (if (= y x) (+ a 1) a)) 0 lst)))
-
-(define
-  mod/duplicate-rule-names
-  (fn
-    (rules)
-    (let
-      ((names (map mod/rule-name rules)))
-      (mod/distinct
-        (reduce
-          (fn
-            (acc n)
-            (if
-              (< 1 (mod/count-eq n names))
-              (append acc (list n))
-              acc))
-          (list)
-          names)))))
-
-(define mod/lint-rules (fn (rules) {:duplicate-names (mod/duplicate-rule-names rules) :has-catchall (mod/has-catchall? rules) :unreachable (mod/unreachable-rules rules)}))
-
-;; a rule set is well-formed when nothing is dead, it has a catch-all, and rule
-;; names are unique
-(define
-  mod/rules-ok?
-  (fn
-    (rules)
-    (let
-      ((l (mod/lint-rules rules)))
-      (if
-        (empty? (get l :unreachable))
-        (if (get l :has-catchall) (empty? (get l :duplicate-names)) false)
-        false))))

lib/mod/offenders.sx

@@ -1,59 +0,0 @@
-;; lib/mod/offenders.sx — repeat-offender escalation (audit log as evidence).
-;;
-;; The append-only audit trail is itself a source of evidence: a subject already
-;; sanctioned several times is a repeat offender. mod/decide-escalating decides a
-;; report normally, then — if the action is a sanction and the subject has at
-;; least k PRIOR sanctions in the audit log — upgrades it to :ban. This is the one
-;; place a decision depends on history beyond the single report, and it reads that
-;; history from the audit log rather than re-deriving it.
-
-(define
-  mod/sanction?
-  (fn
-    (action)
-    (mod/any? (fn (a) (= a action)) (list "hide" "remove" "ban"))))
-
-;; count of prior sanctioning decisions in the audit log about a subject
-(define
-  mod/subject-sanctions
-  (fn
-    (subject)
-    (reduce
-      (fn
-        (acc e)
-        (let
-          ((r (mod/get-report (get e :report-id))))
-          (if
-            (nil? r)
-            acc
-            (if
-              (if
-                (= (mod/report-about r) subject)
-                (mod/sanction? (get e :action))
-                false)
-              (+ acc 1)
-              acc))))
-      0
-      (mod/audit-all))))
-
-(define
-  mod/repeat-offender?
-  (fn (subject k) (<= k (mod/subject-sanctions subject))))
-
-(define
-  mod/decide-escalating
-  (fn
-    (id k)
-    (let
-      ((r (mod/get-report id)))
-      (if
-        (nil? r)
-        nil
-        (let
-          ((priors (mod/subject-sanctions (mod/report-about r))))
-          (let
-            ((d (mod/decide id)))
-            (if
-              (if (mod/sanction? (get d :action)) (<= k priors) false)
-              {:action "ban" :proof {:goals (get (get d :proof) :goals) :prior-sanctions priors :evidence (get (get d :proof) :evidence) :conditions (list) :rule "repeat-offender-ban" :count (get (get d :proof) :count)} :report-id id :rule "repeat-offender-ban" :strategy "escalating"}
-              d)))))))

lib/mod/pipeline.sx

@@ -1,18 +0,0 @@
-;; lib/mod/pipeline.sx — end-to-end triage orchestration.
-;;
-;; A single entry point that runs a report through the subsystem and returns the
-;; full artifact bundle: the decision (under the report's domain policy), a
-;; human-readable explanation, an ActivityPub-shaped event for the bus, and the
-;; wire line for federated peers. Composes policies (Ext 17), explain (Ext 3),
-;; activity (Ext 16) and wire (Ext 14) — the modules are independent, this is just
-;; the convenience that wires them together for the common "process a report" path.
-
-(define
-  mod/triage-pipeline
-  (fn
-    (domain r reports actor)
-    (let ((d (mod/decide-in domain r reports))) {:activity (mod/decision->activity d actor) :action (get d :action) :wire (mod/decision->wire d) :rule (get d :rule) :decision d :explanation (mod/explain d)})))
-
-(define mod/pipeline-action (fn (p) (get p :action)))
-(define mod/pipeline-activity (fn (p) (get p :activity)))
-(define mod/pipeline-wire (fn (p) (get p :wire)))

lib/mod/policies.sx

@@ -1,40 +0,0 @@
-;; lib/mod/policies.sx — per-domain policy registry.
-;;
-;; rose-ash spans domains (blog, market, events, federation, …) that want
-;; different moderation — a marketplace listing and a blog comment are not held to
-;; the same bar. This registry maps a domain to a rule set; mod/decide-in resolves
-;; the right policy and decides. Unregistered domains fall back to the default
-;; rules, so adding a domain never leaves it unmoderated.
-
-(define mod/*policies* (list))
-
-(define mod/policies-reset! (fn () (set! mod/*policies* (list))))
-
-(define
-  mod/register-policy!
-  (fn (domain rules) (begin (append! mod/*policies* {:domain domain :rules rules}) true)))
-
-(define
-  mod/policy-registered?
-  (fn
-    (domain)
-    (mod/any? (fn (p) (= (get p :domain) domain)) mod/*policies*)))
-
-(define
-  mod/policy-for
-  (fn
-    (domain)
-    (reduce
-      (fn (acc p) (if (= (get p :domain) domain) (get p :rules) acc))
-      mod/default-rules
-      mod/*policies*)))
-
-(define
-  mod/decide-in
-  (fn
-    (domain r reports)
-    (mod/decide-report r reports (mod/policy-for domain))))
-
-(define
-  mod/registered-domains
-  (fn () (map (fn (p) (get p :domain)) mod/*policies*)))

lib/mod/policy.sx

@@ -1,137 +0,0 @@
-;; lib/mod/policy.sx — moderation rules → Prolog clauses.
-;;
-;; A rule is {:name :action :when}. :when is a list of condition forms; each
-;; compiles to a Prolog goal. The conditions in a :when list are ANDed (joined by
-;; ", "); :not negates and :any (a list of sub-conditions) disjoins — so the
-;; condition language is a small boolean algebra over the leaf predicates.
-;; Rule order is precedence: the engine queries with pl-query-one, so the first
-;; clause that proves wins. The final default rule has an empty body (true) so
-;; every report yields at least :keep — "no rule matched" is a real result, not a
-;; query failure.
-;;
-;; cond->goal takes an id-term so the same condition can be compiled with the
-;; head variable "Id" (for clause bodies) or a concrete report id (for proof-tree
-;; goal-by-goal re-querying in the engine).
-;;
-;; Precedence (top wins): exoneration evidence (appeal override) > confirmed-abuse
-;; evidence (human review) > spam/abuse classification > repeated-report count >
-;; default keep.
-
-(define mod/mk-rule (fn (name action conds) {:when conds :name name :action action}))
-
-(define mod/rule-name (fn (r) (get r :name)))
-(define mod/rule-action (fn (r) (get r :action)))
-(define mod/rule-when (fn (r) (get r :when)))
-
-(define
-  mod/default-rules
-  (list
-    (mod/mk-rule
-      "exonerated-keep"
-      :keep (list (list :evidence "exonerated")))
-    (mod/mk-rule
-      "reviewer-remove"
-      :remove (list (list :evidence "confirmed-abuse")))
-    (mod/mk-rule "spam-hide" :hide (list (list :classification "spam")))
-    (mod/mk-rule
-      "abuse-remove"
-      :remove (list (list :classification "abuse")))
-    (mod/mk-rule
-      "repeated-escalate"
-      :escalate (list (list :count-at-least 3)))
-    (mod/mk-rule "default-keep" :keep (list))))
-
-;; ── condition → Prolog goal ──
-;;
-;; (:classification "spam")  → classification(Id, spam)
-;; (:evidence "kind")        → evidence(Id, 'kind', _)
-;; (:attr "verified")        → attr(Id, verified)
-;; (:not <cond>)             → not(<cond>)                        (negation)
-;; (:any (list c1 c2 ...))   → (g1 ; g2 ; ...)                    (disjunction)
-;; (:count-at-least 3)       → report(Id, B, S), report_count(S, N), N >= 3
-;; (:score-at-least 5)       → aggregate_all(sum(W), signal(Id, _, W), T), T >= 5
-;; (:reporters-at-least 2)   → report(Id, _, Sr), setof(Br, report(_, Br, Sr), Bsr),
-;;                             length(Bsr, Nr), Nr >= 2   (quorum engine)
-;; (:burst-at-least 3)       → report(Id, _, Sb), burst_count(Sb, Nb), Nb >= 3
-;;                             (temporal engine)
-
-(define
-  mod/cond->goal
-  (fn
-    (c idterm)
-    (let
-      ((tag (first c)))
-      (cond
-        ((= tag :classification)
-          (str "classification(" idterm ", " (nth c 1) ")"))
-        ((= tag :evidence)
-          (str
-            "evidence("
-            idterm
-            ", "
-            (mod/pl-quote (nth c 1))
-            ", _)"))
-        ((= tag :attr) (str "attr(" idterm ", " (nth c 1) ")"))
-        ((= tag :not)
-          (str "not(" (mod/cond->goal (nth c 1) idterm) ")"))
-        ((= tag :any)
-          (str
-            "("
-            (mod/join-with
-              " ; "
-              (map
-                (fn (sub) (mod/cond->goal sub idterm))
-                (nth c 1)))
-            ")"))
-        ((= tag :count-at-least)
-          (str
-            "report("
-            idterm
-            ", B, S), report_count(S, N), N >= "
-            (nth c 1)))
-        ((= tag :score-at-least)
-          (str
-            "aggregate_all(sum(W), signal("
-            idterm
-            ", _, W), T), T >= "
-            (nth c 1)))
-        ((= tag :reporters-at-least)
-          (str
-            "report("
-            idterm
-            ", _, Sr), setof(Br, report(_, Br, Sr), Bsr), "
-            "length(Bsr, Nr), Nr >= "
-            (nth c 1)))
-        ((= tag :burst-at-least)
-          (str
-            "report("
-            idterm
-            ", _, Sb), burst_count(Sb, Nb), Nb >= "
-            (nth c 1)))
-        (true "true")))))
-
-(define
-  mod/conds->body
-  (fn
-    (conds idterm)
-    (if
-      (empty? conds)
-      "true"
-      (mod/join-with ", " (map (fn (c) (mod/cond->goal c idterm)) conds)))))
-
-(define
-  mod/rule->clause
-  (fn
-    (r)
-    (str
-      "policy_action(Id, "
-      (mod/rule-action r)
-      ", '"
-      (mod/rule-name r)
-      "') :- "
-      (mod/conds->body (mod/rule-when r) "Id")
-      ".")))
-
-(define
-  mod/rules->program
-  (fn (rules) (mod/join-with "\n" (map mod/rule->clause rules))))

lib/mod/quorum.sx

@@ -1,40 +0,0 @@
-;; lib/mod/quorum.sx — quorum decisions over distinct reporters (anti-brigade).
-;;
-;; The base engine asserts only the decided report's report/3 fact, so it can't
-;; reason about WHO reported a subject. The quorum engine additionally asserts
-;; every report's report/3 fact (via link's rel-facts), letting a rule require N
-;; *distinct* reporters with `setof`/`length` — so one user filing many reports
-;; does not manufacture consensus. Same decision shape as the base engine, plus
-;; :strategy "quorum".
-
-(define
-  mod/build-quorum-program
-  (fn
-    (r count reports rules)
-    (str
-      (mod/report-rel-facts reports)
-      "\n"
-      (mod/report-facts r count)
-      "\n"
-      (mod/rules->program rules))))
-
-(define
-  mod/decide-quorum
-  (fn
-    (r reports rules)
-    (let
-      ((count (mod/report-count (mod/report-about r) reports))
-        (kinds (mod/classify-keywords r))
-        (id (mod/report-id r)))
-      (let
-        ((program (mod/build-quorum-program r count reports rules)))
-        (let
-          ((db (pl-load program)))
-          (let
-            ((sol (pl-query-one db (str "policy_action(" id ", Action, Rule)"))))
-            (if
-              (nil? sol)
-              {:action "keep" :proof {:goals (list) :evidence kinds :conditions (list) :rule "none" :count count} :report-id id :rule "none" :strategy "quorum"}
-              (let
-                ((rule (mod/find-rule rules (dict-get sol "Rule"))))
-                {:action (mod/rule-action rule) :proof {:goals (mod/proof-goals db id (mod/rule-when rule)) :evidence kinds :conditions (mod/rule-when rule) :rule (mod/rule-name rule) :count count} :report-id id :rule (mod/rule-name rule) :strategy "quorum"}))))))))

lib/mod/schema.sx

@@ -1,259 +0,0 @@
-;; lib/mod/schema.sx — report representation + Prolog fact generation.
-;;
-;; A report is a dict {:id :by :about :reason :evidence :attrs :signals :at}.
-;;   :evidence — accumulated {:kind :val} entries (human review, scanners)
-;;   :attrs    — attribute names ("verified") for negation-as-failure conditions
-;;   :signals  — weighted {:kind :weight} entries for aggregate scoring rules
-;;   :at       — integer timestamp/tick (deterministic; supplied, not clock-read)
-;; The engine derives keyword classifications from the reason text and projects
-;; the report, its classifications, evidence, attributes, and signals into Prolog
-;; facts that policy clauses match against.
-
-(define mod/mk-report (fn (id by about reason) {:attrs (list) :id id :signals (list) :by by :evidence (list) :about about :at 0 :reason reason}))
-
-(define mod/report-id (fn (r) (get r :id)))
-(define mod/report-by (fn (r) (get r :by)))
-(define mod/report-about (fn (r) (get r :about)))
-(define mod/report-reason (fn (r) (get r :reason)))
-
-(define
-  mod/report-evidence
-  (fn (r) (let ((e (get r :evidence))) (if (nil? e) (list) e))))
-
-(define
-  mod/report-attrs
-  (fn (r) (let ((a (get r :attrs))) (if (nil? a) (list) a))))
-
-(define
-  mod/report-signals
-  (fn (r) (let ((s (get r :signals))) (if (nil? s) (list) s))))
-
-(define
-  mod/report-at
-  (fn (r) (let ((t (get r :at))) (if (nil? t) 0 t))))
-
-(define mod/mk-evidence (fn (kind val) {:val val :kind kind}))
-(define mod/evidence-kind (fn (e) (get e :kind)))
-(define mod/evidence-val (fn (e) (get e :val)))
-
-(define mod/mk-signal (fn (kind weight) {:kind kind :weight weight}))
-(define mod/signal-kind (fn (s) (get s :kind)))
-(define mod/signal-weight (fn (s) (get s :weight)))
-
-(define mod/report* (fn (r evs attrs sigs at) {:attrs attrs :id (mod/report-id r) :signals sigs :by (mod/report-by r) :evidence evs :about (mod/report-about r) :at at :reason (mod/report-reason r)}))
-
-(define
-  mod/with-evidence
-  (fn
-    (r evs)
-    (mod/report*
-      r
-      evs
-      (mod/report-attrs r)
-      (mod/report-signals r)
-      (mod/report-at r))))
-
-(define
-  mod/with-attrs
-  (fn
-    (r attrs)
-    (mod/report*
-      r
-      (mod/report-evidence r)
-      attrs
-      (mod/report-signals r)
-      (mod/report-at r))))
-
-(define
-  mod/with-signals
-  (fn
-    (r sigs)
-    (mod/report*
-      r
-      (mod/report-evidence r)
-      (mod/report-attrs r)
-      sigs
-      (mod/report-at r))))
-
-(define
-  mod/with-at
-  (fn
-    (r at)
-    (mod/report*
-      r
-      (mod/report-evidence r)
-      (mod/report-attrs r)
-      (mod/report-signals r)
-      at)))
-
-(define
-  mod/attach-evidence
-  (fn
-    (r e)
-    (mod/with-evidence r (append (mod/report-evidence r) (list e)))))
-
-(define
-  mod/attach-attr
-  (fn (r a) (mod/with-attrs r (append (mod/report-attrs r) (list a)))))
-
-(define
-  mod/attach-signal
-  (fn (r s) (mod/with-signals r (append (mod/report-signals r) (list s)))))
-
-;; ── substring search (the prolog-loaded env lacks includes?; slice/len do work) ──
-
-(define
-  mod/contains-at?
-  (fn
-    (hay needle hl nl pos)
-    (if
-      (< hl (+ pos nl))
-      false
-      (if
-        (= (slice hay pos (+ pos nl)) needle)
-        true
-        (mod/contains-at? hay needle hl nl (+ pos 1))))))
-
-(define
-  mod/str-contains?
-  (fn
-    (hay needle)
-    (let
-      ((hl (len hay)) (nl (len needle)))
-      (if
-        (= nl 0)
-        true
-        (mod/contains-at? hay needle hl nl 0)))))
-
-;; ── evidence derivation (keyword classification) ──
-
-(define
-  mod/spam-keywords
-  (list "spam" "buy now" "click here" "free money" "viagra" "limited offer"))
-
-(define
-  mod/abuse-keywords
-  (list "abuse" "harassment" "threat" "slur" "hate speech"))
-
-(define
-  mod/any?
-  (fn (pred coll) (reduce (fn (acc x) (if acc acc (pred x))) false coll)))
-
-(define
-  mod/reason-matches?
-  (fn
-    (reason kws)
-    (let
-      ((low (downcase reason)))
-      (mod/any? (fn (k) (mod/str-contains? low k)) kws))))
-
-(define
-  mod/classify-keywords
-  (fn
-    (r)
-    (let
-      ((reason (mod/report-reason r)) (kinds (list)))
-      (begin
-        (when
-          (mod/reason-matches? reason mod/spam-keywords)
-          (append! kinds "spam"))
-        (when
-          (mod/reason-matches? reason mod/abuse-keywords)
-          (append! kinds "abuse"))
-        kinds))))
-
-(define
-  mod/report-count
-  (fn
-    (about reports)
-    (reduce
-      (fn
-        (acc r)
-        (if (= (mod/report-about r) about) (+ acc 1) acc))
-      0
-      reports)))
-
-;; ── Prolog fact projection ──
-
-(define
-  mod/join-with
-  (fn
-    (sep items)
-    (reduce (fn (acc x) (if (= acc "") x (str acc sep x))) "" items)))
-
-(define mod/pl-quote (fn (s) (str "'" s "'")))
-
-(define
-  mod/classification-facts
-  (fn
-    (id kinds)
-    (mod/join-with
-      "\n"
-      (map (fn (k) (str "classification(" id ", " k ").")) kinds))))
-
-(define
-  mod/evidence-facts
-  (fn
-    (id evs)
-    (mod/join-with
-      "\n"
-      (map
-        (fn
-          (e)
-          (str
-            "evidence("
-            id
-            ", "
-            (mod/pl-quote (mod/evidence-kind e))
-            ", "
-            (mod/pl-quote (str (mod/evidence-val e)))
-            ")."))
-        evs))))
-
-(define
-  mod/attr-facts
-  (fn
-    (id attrs)
-    (mod/join-with "\n" (map (fn (a) (str "attr(" id ", " a ").")) attrs))))
-
-(define
-  mod/signal-facts
-  (fn
-    (id sigs)
-    (mod/join-with
-      "\n"
-      (map
-        (fn
-          (s)
-          (str
-            "signal("
-            id
-            ", "
-            (mod/pl-quote (mod/signal-kind s))
-            ", "
-            (mod/signal-weight s)
-            ")."))
-        sigs))))
-
-(define
-  mod/report-facts
-  (fn
-    (r count)
-    (let
-      ((id (mod/report-id r))
-        (by (mod/pl-quote (mod/report-by r)))
-        (about (mod/pl-quote (mod/report-about r))))
-      (let
-        ((cls (mod/classification-facts id (mod/classify-keywords r)))
-          (evs (mod/evidence-facts id (mod/report-evidence r)))
-          (ats (mod/attr-facts id (mod/report-attrs r)))
-          (sgs (mod/signal-facts id (mod/report-signals r))))
-        (mod/join-with
-          "\n"
-          (list
-            (str "report(" id ", " by ", " about ").")
-            (str "report_count(" about ", " count ").")
-            cls
-            evs
-            ats
-            sgs))))))

lib/mod/scoreboard.json

@@ -1,30 +0,0 @@
-{
-  "lang": "mod",
-  "total_passed": 390,
-  "total_failed": 0,
-  "total": 390,
-  "suites": [
-    {"name":"decide","passed":31,"failed":0,"total":31},
-    {"name":"audit","passed":29,"failed":0,"total":29},
-    {"name":"escalation","passed":46,"failed":0,"total":46},
-    {"name":"fed","passed":26,"failed":0,"total":26},
-    {"name":"extensions","passed":32,"failed":0,"total":32},
-    {"name":"link","passed":12,"failed":0,"total":12},
-    {"name":"lint","passed":14,"failed":0,"total":14},
-    {"name":"severity","passed":14,"failed":0,"total":14},
-    {"name":"offenders","passed":19,"failed":0,"total":19},
-    {"name":"quorum","passed":9,"failed":0,"total":9},
-    {"name":"trace","passed":15,"failed":0,"total":15},
-    {"name":"whatif","passed":13,"failed":0,"total":13},
-    {"name":"batch","passed":17,"failed":0,"total":17},
-    {"name":"temporal","passed":15,"failed":0,"total":15},
-    {"name":"sla","passed":15,"failed":0,"total":15},
-    {"name":"wire","passed":16,"failed":0,"total":16},
-    {"name":"disjunction","passed":10,"failed":0,"total":10},
-    {"name":"activity","passed":17,"failed":0,"total":17},
-    {"name":"policies","passed":14,"failed":0,"total":14},
-    {"name":"defrule","passed":11,"failed":0,"total":11},
-    {"name":"pipeline","passed":15,"failed":0,"total":15}
-  ],
-  "generated": "2026-06-06T19:40:03+00:00"
-}

lib/mod/scoreboard.md

@@ -1,27 +0,0 @@
-# mod scoreboard
-
-**390 / 390 passing** (0 failure(s)).
-
-| Suite | Passed | Total | Status |
-|-------|--------|-------|--------|
-| decide | 31 | 31 | ok |
-| audit | 29 | 29 | ok |
-| escalation | 46 | 46 | ok |
-| fed | 26 | 26 | ok |
-| extensions | 32 | 32 | ok |
-| link | 12 | 12 | ok |
-| lint | 14 | 14 | ok |
-| severity | 14 | 14 | ok |
-| offenders | 19 | 19 | ok |
-| quorum | 9 | 9 | ok |
-| trace | 15 | 15 | ok |
-| whatif | 13 | 13 | ok |
-| batch | 17 | 17 | ok |
-| temporal | 15 | 15 | ok |
-| sla | 15 | 15 | ok |
-| wire | 16 | 16 | ok |
-| disjunction | 10 | 10 | ok |
-| activity | 17 | 17 | ok |
-| policies | 14 | 14 | ok |
-| defrule | 11 | 11 | ok |
-| pipeline | 15 | 15 | ok |

lib/mod/severity.sx

@@ -1,60 +0,0 @@
-;; lib/mod/severity.sx — "strictest-wins" decision strategy.
-;;
-;; The default engine resolves precedence by rule ORDER (first proven clause wins,
-;; via pl-query-one). Some policies instead want the HARSHEST applicable sanction
-;; regardless of order. mod/decide-strictest collects every rule that proves
-;; (pl-query-all) and picks the highest-severity action. Same decision shape as
-;; the engine, plus :strategy. Built over the engine's helpers; engine untouched.
-
-(define
-  mod/action-severity
-  (fn
-    (action)
-    (cond
-      ((= action "ban") 4)
-      ((= action "remove") 3)
-      ((= action "hide") 2)
-      ((= action "escalate") 1)
-      (true 0))))
-
-(define
-  mod/strictest-sol
-  (fn
-    (sols)
-    (reduce
-      (fn
-        (acc s)
-        (if
-          (nil? acc)
-          s
-          (if
-            (<
-              (mod/action-severity (dict-get acc "Action"))
-              (mod/action-severity (dict-get s "Action")))
-            s
-            acc)))
-      nil
-      sols)))
-
-(define
-  mod/decide-strictest
-  (fn
-    (r reports rules)
-    (let
-      ((count (mod/report-count (mod/report-about r) reports))
-        (kinds (mod/classify-keywords r))
-        (id (mod/report-id r)))
-      (let
-        ((program (mod/build-program r count rules)))
-        (let
-          ((db (pl-load program)))
-          (let
-            ((sols (pl-query-all db (str "policy_action(" id ", Action, Rule)"))))
-            (let
-              ((best (mod/strictest-sol sols)))
-              (if
-                (nil? best)
-                {:action "keep" :proof {:goals (list) :evidence kinds :conditions (list) :rule "none" :count count} :report-id id :rule "none" :strategy "strictest"}
-                (let
-                  ((rule (mod/find-rule rules (dict-get best "Rule"))))
-                  {:action (mod/rule-action rule) :proof {:goals (mod/proof-goals db id (mod/rule-when rule)) :evidence kinds :conditions (mod/rule-when rule) :rule (mod/rule-name rule) :count count} :report-id id :rule (mod/rule-name rule) :strategy "strictest"})))))))))

lib/mod/sla.sx

@@ -1,47 +0,0 @@
-;; lib/mod/sla.sx — service-level sweep over pending lifecycle cases.
-;;
-;; Composes the Phase-3 lifecycle with the Ext-12 time dimension: a case left in a
-;; pending state (open / triaged / appealed) past a deadline has breached SLA and
-;; should resurface. A timed-case pairs a case with the tick it entered its
-;; current state (the caller stamps this — the lifecycle stays timeless and pure).
-;; Terminal states (decided / final) never breach.
-
-(define mod/pending-states (list "open" "triaged" "appealed"))
-(define mod/pending-state? (fn (s) (mod/member? s mod/pending-states)))
-
-(define mod/mk-timed-case (fn (c entered-at) {:entered-at entered-at :case c}))
-(define mod/tc-case (fn (tc) (get tc :case)))
-(define mod/tc-entered-at (fn (tc) (get tc :entered-at)))
-
-(define
-  mod/overdue?
-  (fn
-    (tc now deadline)
-    (if
-      (mod/pending-state? (mod/case-state (mod/tc-case tc)))
-      (< deadline (- now (mod/tc-entered-at tc)))
-      false)))
-
-(define
-  mod/sla-sweep
-  (fn
-    (timed-cases now deadline)
-    (reduce
-      (fn
-        (acc tc)
-        (if
-          (mod/overdue? tc now deadline)
-          (append
-            acc
-            (list (mod/report-id (mod/case-report (mod/tc-case tc)))))
-          acc))
-      (list)
-      timed-cases)))
-
-(define
-  mod/overdue-count
-  (fn
-    (timed-cases now deadline)
-    (len (mod/sla-sweep timed-cases now deadline))))
-
-(define mod/age (fn (tc now) (- now (mod/tc-entered-at tc))))

lib/mod/temporal.sx

@@ -1,62 +0,0 @@
-;; lib/mod/temporal.sx — burst detection over a time window.
-;;
-;; A plain report count can't tell a burst (N reports in minutes) from slow
-;; accumulation (N reports over months). mod/decide-temporal takes a `now` tick
-;; and a `window`, counts reports about the subject with :at within [now-window,
-;; now], asserts it as burst_count/2, and lets a `(:burst-at-least K)` rule fire
-;; only on a genuine burst. Time is supplied (deterministic), never clock-read.
-
-(define
-  mod/window-count
-  (fn
-    (subject reports now window)
-    (reduce
-      (fn
-        (acc r)
-        (if
-          (if
-            (= (mod/report-about r) subject)
-            (<= (- now window) (mod/report-at r))
-            false)
-          (+ acc 1)
-          acc))
-      0
-      reports)))
-
-(define
-  mod/build-temporal-program
-  (fn
-    (r count bcount rules)
-    (str
-      (mod/report-facts r count)
-      "\n"
-      "burst_count("
-      (mod/pl-quote (mod/report-about r))
-      ", "
-      bcount
-      ").\n"
-      (mod/rules->program rules))))
-
-(define
-  mod/decide-temporal
-  (fn
-    (r reports rules now window)
-    (let
-      ((about (mod/report-about r))
-        (id (mod/report-id r))
-        (kinds (mod/classify-keywords r)))
-      (let
-        ((count (mod/report-count about reports))
-          (bcount (mod/window-count about reports now window)))
-        (let
-          ((program (mod/build-temporal-program r count bcount rules)))
-          (let
-            ((db (pl-load program)))
-            (let
-              ((sol (pl-query-one db (str "policy_action(" id ", Action, Rule)"))))
-              (if
-                (nil? sol)
-                {:action "keep" :proof {:burst bcount :goals (list) :evidence kinds :conditions (list) :rule "none" :count count} :report-id id :rule "none" :strategy "temporal"}
-                (let
-                  ((rule (mod/find-rule rules (dict-get sol "Rule"))))
-                  {:action (mod/rule-action rule) :proof {:burst bcount :goals (mod/proof-goals db id (mod/rule-when rule)) :evidence kinds :conditions (mod/rule-when rule) :rule (mod/rule-name rule) :count count} :report-id id :rule (mod/rule-name rule) :strategy "temporal"})))))))))

lib/mod/tests/activity.sx

@@ -1,95 +0,0 @@
-;; lib/mod/tests/activity.sx — Ext 16: ActivityPub-shaped decision export.
-
-(define mod-ap-count 0)
-(define mod-ap-pass 0)
-(define mod-ap-fail 0)
-(define mod-ap-failures (list))
-
-(define
-  mod-ap-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-ap-count (+ mod-ap-count 1))
-      (if
-        (= got expected)
-        (set! mod-ap-pass (+ mod-ap-pass 1))
-        (begin
-          (set! mod-ap-fail (+ mod-ap-fail 1))
-          (append!
-            mod-ap-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; ── action → AP verb ──
-
-(mod-ap-test! "remove → Delete" (mod/action->verb "remove") "Delete")
-(mod-ap-test! "ban → Block" (mod/action->verb "ban") "Block")
-(mod-ap-test! "hide → Flag" (mod/action->verb "hide") "Flag")
-(mod-ap-test! "escalate → Flag" (mod/action->verb "escalate") "Flag")
-(mod-ap-test! "keep → nil (no activity)" (mod/action->verb "keep") nil)
-
-;; ── single decision → activity ──
-
-(define mod-ap-spam (mod/mk-report "r1" "a" "bob" "this is spam"))
-(define
-  mod-ap-dec
-  (mod/decide-report mod-ap-spam (list mod-ap-spam) mod/default-rules))
-(define mod-ap-act (mod/decision->activity mod-ap-dec "instance.example"))
-
-(mod-ap-test! "activity type is Flag (hide)" (get mod-ap-act :type) "Flag")
-(mod-ap-test! "activity object is report id" (get mod-ap-act :object) "r1")
-(mod-ap-test!
-  "activity actor preserved"
-  (get mod-ap-act :actor)
-  "instance.example")
-(mod-ap-test!
-  "activity preserves precise action"
-  (get mod-ap-act :action)
-  "hide")
-(mod-ap-test! "activity carries rule" (get mod-ap-act :rule) "spam-hide")
-(mod-ap-test!
-  "activity summary"
-  (get mod-ap-act :summary)
-  "moderation/hide via spam-hide")
-
-;; ── keep produces no activity ──
-
-(define mod-ap-clean (mod/mk-report "r2" "a" "b" "a fine post"))
-(define
-  mod-ap-keep
-  (mod/decide-report mod-ap-clean (list mod-ap-clean) mod/default-rules))
-(mod-ap-test!
-  "keep decision → nil activity"
-  (mod/decision->activity mod-ap-keep "x")
-  nil)
-
-;; ── abuse → Delete ──
-
-(define mod-ap-abuse (mod/mk-report "r3" "a" "b" "harassment here"))
-(define
-  mod-ap-abuse-dec
-  (mod/decide-report mod-ap-abuse (list mod-ap-abuse) mod/default-rules))
-(mod-ap-test!
-  "abuse decision → Delete activity"
-  (get (mod/decision->activity mod-ap-abuse-dec "x") :type)
-  "Delete")
-
-;; ── batch export drops keeps ──
-
-(define mod-ap-decisions (list mod-ap-dec mod-ap-keep mod-ap-abuse-dec))
-(define mod-ap-acts (mod/decisions->activities mod-ap-decisions "inst"))
-(mod-ap-test! "batch export drops the keep" (len mod-ap-acts) 2)
-(mod-ap-test!
-  "batch export first is the Flag"
-  (get (first mod-ap-acts) :type)
-  "Flag")
-(mod-ap-test!
-  "batch export second is the Delete"
-  (get (nth mod-ap-acts 1) :type)
-  "Delete")
-(mod-ap-test!
-  "empty decisions → no activities"
-  (mod/decisions->activities (list) "inst")
-  (list))
-
-(define mod-activity-tests-run! (fn () {:failures mod-ap-failures :total mod-ap-count :passed mod-ap-pass :failed mod-ap-fail}))

lib/mod/tests/audit.sx

@@ -1,187 +0,0 @@
-;; lib/mod/tests/audit.sx — Phase 2: evidence accumulation + proof tree + audit.
-
-(define mod-aud-count 0)
-(define mod-aud-pass 0)
-(define mod-aud-fail 0)
-(define mod-aud-failures (list))
-
-(define
-  mod-aud-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-aud-count (+ mod-aud-count 1))
-      (if
-        (= got expected)
-        (set! mod-aud-pass (+ mod-aud-pass 1))
-        (begin
-          (set! mod-aud-fail (+ mod-aud-fail 1))
-          (append!
-            mod-aud-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-(define
-  mod-aud-decide1
-  (fn (r) (mod/decide-report r (list r) mod/default-rules)))
-
-;; ── proof tree: keyword classification ──
-
-(define
-  mod-aud-spam
-  (mod-aud-decide1 (mod/mk-report "r1" "alice" "bob" "this is spam")))
-(define mod-aud-spam-goals (get (get mod-aud-spam :proof) :goals))
-
-(mod-aud-test! "spam proof has one goal" (len mod-aud-spam-goals) 1)
-(mod-aud-test!
-  "spam proof goal text"
-  (get (first mod-aud-spam-goals) :goal)
-  "classification(r1, spam)")
-(mod-aud-test!
-  "spam proof goal solved"
-  (get (first mod-aud-spam-goals) :solved)
-  true)
-
-;; ── proof tree: count rule with real bindings ──
-
-(define mod-aud-rep-r (mod/mk-report "r3" "ann" "dave" "x"))
-(define
-  mod-aud-rep
-  (mod/decide-report
-    mod-aud-rep-r
-    (list mod-aud-rep-r mod-aud-rep-r mod-aud-rep-r)
-    mod/default-rules))
-(define mod-aud-rep-goals (get (get mod-aud-rep :proof) :goals))
-(define mod-aud-rep-binds (get (first mod-aud-rep-goals) :bindings))
-
-(mod-aud-test!
-  "count proof goal solved"
-  (get (first mod-aud-rep-goals) :solved)
-  true)
-(mod-aud-test! "count proof binding N" (dict-get mod-aud-rep-binds "N") "3")
-(mod-aud-test!
-  "count proof binding S (subject)"
-  (dict-get mod-aud-rep-binds "S")
-  "dave")
-
-;; ── proof tree: default keep has a 'true' goal ──
-
-(define
-  mod-aud-keep
-  (mod-aud-decide1 (mod/mk-report "rk" "a" "b" "a fine post")))
-(define mod-aud-keep-goals (get (get mod-aud-keep :proof) :goals))
-
-(mod-aud-test!
-  "keep proof goal text true"
-  (get (first mod-aud-keep-goals) :goal)
-  "true")
-(mod-aud-test!
-  "keep proof goal solved"
-  (get (first mod-aud-keep-goals) :solved)
-  true)
-
-;; ── evidence accumulation drives a rule ──
-
-(define
-  mod-aud-rev-r
-  (mod/attach-evidence
-    (mod/mk-report "re" "a" "carol" "neutral")
-    (mod/mk-evidence "confirmed-abuse" "human")))
-(define mod-aud-rev (mod-aud-decide1 mod-aud-rev-r))
-
-(mod-aud-test!
-  "evidence has length 1"
-  (len (mod/report-evidence mod-aud-rev-r))
-  1)
-(mod-aud-test!
-  "evidence reviewer-remove → remove"
-  (get mod-aud-rev :action)
-  "remove")
-(mod-aud-test!
-  "evidence reviewer-remove rule"
-  (get mod-aud-rev :rule)
-  "reviewer-remove")
-(mod-aud-test!
-  "evidence proof goal solved"
-  (get (first (get (get mod-aud-rev :proof) :goals)) :solved)
-  true)
-(mod-aud-test!
-  "no evidence → not reviewer-remove"
-  (get (mod-aud-decide1 (mod/mk-report "rn" "a" "b" "neutral")) :rule)
-  "default-keep")
-
-;; ── append-only audit log via the api ──
-
-(mod/reset!)
-(mod/report "alice" "bob" "this is spam")
-(mod/report "carol" "eve" "fine post")
-(define mod-aud-d1 (mod/decide "r1"))
-(define mod-aud-d2 (mod/decide "r2"))
-
-(mod-aud-test! "two decisions logged" (mod/audit-count) 2)
-(mod-aud-test!
-  "first entry seq 1"
-  (get (first (mod/audit-all)) :seq)
-  1)
-(mod-aud-test!
-  "audit r1 returns one entry"
-  (len (mod/audit "r1"))
-  1)
-(mod-aud-test!
-  "audit r1 action matches decision"
-  (get (first (mod/audit "r1")) :action)
-  (get mod-aud-d1 :action))
-(mod-aud-test!
-  "audit r1 rule matches decision"
-  (get (first (mod/audit "r1")) :rule)
-  "spam-hide")
-(mod-aud-test!
-  "audit r1 entry carries proof goals"
-  (len (get (get (first (mod/audit "r1")) :proof) :goals))
-  1)
-(mod-aud-test!
-  "audit r2 keep"
-  (get (first (mod/audit "r2")) :action)
-  "keep")
-(mod-aud-test! "audit unknown report → empty" (mod/audit "r99") (list))
-
-;; ── append-only: re-deciding appends, never mutates ──
-
-(define mod-aud-d1b (mod/decide "r1"))
-
-(mod-aud-test! "re-decide appends (count 3)" (mod/audit-count) 3)
-(mod-aud-test!
-  "audit r1 now has 2 entries"
-  (len (mod/audit "r1"))
-  2)
-(mod-aud-test!
-  "audit r1 seqs monotonic"
-  (get (nth (mod/audit "r1") 1) :seq)
-  3)
-(mod-aud-test!
-  "audit-latest r1 is seq 3"
-  (get (mod/audit-latest "r1") :seq)
-  3)
-(mod-aud-test!
-  "first r1 entry unchanged (still seq 1)"
-  (get (first (mod/audit "r1")) :seq)
-  1)
-
-;; ── evidence snapshot captured at decision time ──
-
-(mod/add-evidence "r2" "confirmed-abuse" "human")
-(define mod-aud-d2b (mod/decide "r2"))
-
-(mod-aud-test!
-  "post-evidence decision flips to remove"
-  (get mod-aud-d2b :action)
-  "remove")
-(mod-aud-test!
-  "audit snapshot records evidence kind"
-  (mod/evidence-kind (first (get (mod/audit-latest "r2") :evidence)))
-  "confirmed-abuse")
-(mod-aud-test!
-  "earlier r2 entry had empty evidence snapshot"
-  (len (get (first (mod/audit "r2")) :evidence))
-  0)
-
-(define mod-audit-tests-run! (fn () {:failures mod-aud-failures :total mod-aud-count :passed mod-aud-pass :failed mod-aud-fail}))

lib/mod/tests/batch.sx

@@ -1,101 +0,0 @@
-;; lib/mod/tests/batch.sx — Ext 11: batch triage + corpus analytics.
-
-(define mod-b-count 0)
-(define mod-b-pass 0)
-(define mod-b-fail 0)
-(define mod-b-failures (list))
-
-(define
-  mod-b-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-b-count (+ mod-b-count 1))
-      (if
-        (= got expected)
-        (set! mod-b-pass (+ mod-b-pass 1))
-        (begin
-          (set! mod-b-fail (+ mod-b-fail 1))
-          (append!
-            mod-b-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; corpus: 2 spam, 1 abuse, 2 clean — distinct subjects so the count rule stays quiet
-(define
-  mod-b-corpus
-  (list
-    (mod/mk-report "r1" "u" "s1" "this is spam")
-    (mod/mk-report "r2" "u" "s2" "buy now offer")
-    (mod/mk-report "r3" "u" "s3" "harassment here")
-    (mod/mk-report "r4" "u" "s4" "a fine post")
-    (mod/mk-report "r5" "u" "s5" "thanks for sharing")))
-
-(define mod-b-decisions (mod/decide-batch mod-b-corpus mod/default-rules))
-
-;; ── decide-batch ──
-
-(mod-b-test! "one decision per report" (len mod-b-decisions) 5)
-(mod-b-test!
-  "first decision is hide"
-  (get (first mod-b-decisions) :action)
-  "hide")
-
-;; ── action histogram ──
-
-(define mod-b-hist (mod/action-histogram mod-b-decisions))
-(mod-b-test! "histogram hide count" (get mod-b-hist :hide) 2)
-(mod-b-test! "histogram remove count" (get mod-b-hist :remove) 1)
-(mod-b-test! "histogram keep count" (get mod-b-hist :keep) 2)
-(mod-b-test! "histogram escalate count" (get mod-b-hist :escalate) 0)
-(mod-b-test! "histogram ban count" (get mod-b-hist :ban) 0)
-(mod-b-test!
-  "histogram totals match corpus"
-  (+
-    (+ (get mod-b-hist :hide) (get mod-b-hist :remove))
-    (+
-      (get mod-b-hist :keep)
-      (+ (get mod-b-hist :escalate) (get mod-b-hist :ban))))
-  5)
-
-;; ── rule coverage (empirical) ──
-
-(define mod-b-cov (mod/rule-coverage mod-b-corpus mod/default-rules))
-(mod-b-test! "coverage has one row per rule" (len mod-b-cov) 6)
-(mod-b-test!
-  "spam-hide fired twice"
-  (mod/rule-fire-count mod-b-decisions "spam-hide")
-  2)
-(mod-b-test!
-  "abuse-remove fired once"
-  (mod/rule-fire-count mod-b-decisions "abuse-remove")
-  1)
-(mod-b-test!
-  "default-keep fired twice"
-  (mod/rule-fire-count mod-b-decisions "default-keep")
-  2)
-
-;; ── never-fired: rules not exercised by this corpus ──
-
-(define mod-b-never (mod/never-fired mod-b-corpus mod/default-rules))
-(mod-b-test!
-  "exonerated-keep never fired"
-  (mod/member? "exonerated-keep" mod-b-never)
-  true)
-(mod-b-test!
-  "reviewer-remove never fired"
-  (mod/member? "reviewer-remove" mod-b-never)
-  true)
-(mod-b-test!
-  "repeated-escalate never fired"
-  (mod/member? "repeated-escalate" mod-b-never)
-  true)
-(mod-b-test!
-  "spam-hide DID fire (not in never-fired)"
-  (mod/member? "spam-hide" mod-b-never)
-  false)
-(mod-b-test!
-  "three rules never fired on this corpus"
-  (len mod-b-never)
-  3)
-
-(define mod-batch-tests-run! (fn () {:failures mod-b-failures :total mod-b-count :passed mod-b-pass :failed mod-b-fail}))

lib/mod/tests/decide.sx

@@ -1,215 +0,0 @@
-;; lib/mod/tests/decide.sx — Phase 1: report representation + simple policy.
-
-(define mod-dec-count 0)
-(define mod-dec-pass 0)
-(define mod-dec-fail 0)
-(define mod-dec-failures (list))
-
-(define
-  mod-dec-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-dec-count (+ mod-dec-count 1))
-      (if
-        (= got expected)
-        (set! mod-dec-pass (+ mod-dec-pass 1))
-        (begin
-          (set! mod-dec-fail (+ mod-dec-fail 1))
-          (append!
-            mod-dec-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; decide a single report (count over a 1-element registry)
-(define
-  mod-dec-one
-  (fn
-    (reason)
-    (let
-      ((r (mod/mk-report "r1" "alice" "bob" reason)))
-      (mod/decide-report r (list r) mod/default-rules))))
-
-(define mod-dec-action (fn (reason) (get (mod-dec-one reason) :action)))
-
-;; ── spam keyword → :hide ──
-
-(mod-dec-test!
-  "spam keyword 'spam' → hide"
-  (mod-dec-action "this is spam")
-  "hide")
-(mod-dec-test!
-  "spam keyword 'buy now' → hide"
-  (mod-dec-action "buy now while stocks last")
-  "hide")
-(mod-dec-test!
-  "spam keyword case-insensitive 'CLICK HERE' → hide"
-  (mod-dec-action "CLICK HERE now")
-  "hide")
-(mod-dec-test!
-  "spam keyword 'free money' → hide"
-  (mod-dec-action "win free money fast")
-  "hide")
-
-;; ── abuse keyword → :remove ──
-
-(mod-dec-test!
-  "abuse keyword 'harassment' → remove"
-  (mod-dec-action "ongoing harassment of users")
-  "remove")
-(mod-dec-test!
-  "abuse keyword 'threat' → remove"
-  (mod-dec-action "this is a threat")
-  "remove")
-(mod-dec-test!
-  "abuse keyword 'slur' → remove"
-  (mod-dec-action "contains a slur")
-  "remove")
-
-;; ── no rule → :keep ──
-
-(mod-dec-test!
-  "neutral reason → keep"
-  (mod-dec-action "I disagree with this post")
-  "keep")
-(mod-dec-test! "empty reason → keep" (mod-dec-action "") "keep")
-
-;; ── decision carries the matching rule (proof, not bare keyword) ──
-
-(mod-dec-test!
-  "spam decision rule name"
-  (get (mod-dec-one "this is spam") :rule)
-  "spam-hide")
-(mod-dec-test!
-  "keep decision rule name"
-  (get (mod-dec-one "fine post") :rule)
-  "default-keep")
-(mod-dec-test!
-  "abuse decision rule name"
-  (get (mod-dec-one "harassment here") :rule)
-  "abuse-remove")
-(mod-dec-test!
-  "spam proof :rule"
-  (get (get (mod-dec-one "spam!") :proof) :rule)
-  "spam-hide")
-(mod-dec-test!
-  "spam proof :evidence"
-  (get (get (mod-dec-one "spam!") :proof) :evidence)
-  (list "spam"))
-(mod-dec-test!
-  "spam proof :count"
-  (get (get (mod-dec-one "spam!") :proof) :count)
-  1)
-
-;; ── classification (evidence derivation) ──
-
-(mod-dec-test!
-  "classify spam"
-  (mod/classify-keywords (mod/mk-report "r1" "a" "b" "spam!"))
-  (list "spam"))
-(mod-dec-test!
-  "classify abuse"
-  (mod/classify-keywords (mod/mk-report "r1" "a" "b" "abuse"))
-  (list "abuse"))
-(mod-dec-test!
-  "classify neutral → empty"
-  (mod/classify-keywords (mod/mk-report "r1" "a" "b" "hello"))
-  (list))
-(mod-dec-test!
-  "classify both spam+abuse"
-  (mod/classify-keywords (mod/mk-report "r1" "a" "b" "spam and abuse"))
-  (list "spam" "abuse"))
-
-;; ── report-count + repeated → :escalate ──
-
-(define
-  mod-dec-three
-  (list
-    (mod/mk-report "r1" "a" "bob" "x")
-    (mod/mk-report "r2" "c" "bob" "y")
-    (mod/mk-report "r3" "d" "bob" "z")))
-
-(mod-dec-test!
-  "report-count counts subject"
-  (mod/report-count "bob" mod-dec-three)
-  3)
-(mod-dec-test!
-  "3 reports about subject → escalate"
-  (get
-    (mod/decide-report (first mod-dec-three) mod-dec-three mod/default-rules)
-    :action)
-  "escalate")
-(mod-dec-test!
-  "escalate rule name"
-  (get
-    (mod/decide-report (first mod-dec-three) mod-dec-three mod/default-rules)
-    :rule)
-  "repeated-escalate")
-
-(define
-  mod-dec-two
-  (list
-    (mod/mk-report "r1" "a" "carol" "x")
-    (mod/mk-report "r2" "c" "carol" "y")))
-
-(mod-dec-test!
-  "2 reports about subject → keep (below threshold)"
-  (get
-    (mod/decide-report (first mod-dec-two) mod-dec-two mod/default-rules)
-    :action)
-  "keep")
-
-;; ── precedence: spam beats repeated ──
-
-(define
-  mod-dec-spam-among-many
-  (list
-    (mod/mk-report "r1" "a" "dave" "buy now spam")
-    (mod/mk-report "r2" "c" "dave" "y")
-    (mod/mk-report "r3" "d" "dave" "z")))
-
-(mod-dec-test!
-  "spam wins over repeated (precedence)"
-  (get
-    (mod/decide-report
-      (first mod-dec-spam-among-many)
-      mod-dec-spam-among-many
-      mod/default-rules)
-    :action)
-  "hide")
-
-;; ── accessors ──
-
-(mod-dec-test!
-  "report-about accessor"
-  (mod/report-about (mod/mk-report "r1" "a" "bob" "x"))
-  "bob")
-(mod-dec-test!
-  "report-by accessor"
-  (mod/report-by (mod/mk-report "r1" "alice" "bob" "x"))
-  "alice")
-
-;; ── api registry ──
-
-(mod/reset!)
-(define mod-dec-r1 (mod/report "alice" "bob" "this is spam"))
-(define mod-dec-r2 (mod/report "carol" "eve" "fine post"))
-
-(mod-dec-test!
-  "mod/report assigns sequential id r1"
-  (mod/report-id mod-dec-r1)
-  "r1")
-(mod-dec-test!
-  "mod/report assigns sequential id r2"
-  (mod/report-id mod-dec-r2)
-  "r2")
-(mod-dec-test!
-  "mod/decide via registry → hide"
-  (get (mod/decide "r1") :action)
-  "hide")
-(mod-dec-test!
-  "mod/decide via registry → keep"
-  (get (mod/decide "r2") :action)
-  "keep")
-(mod-dec-test! "mod/decide unknown id → nil" (mod/decide "r99") nil)
-
-(define mod-decide-tests-run! (fn () {:failures mod-dec-failures :total mod-dec-count :passed mod-dec-pass :failed mod-dec-fail}))

lib/mod/tests/defrule.sx

@@ -1,95 +0,0 @@
-;; lib/mod/tests/defrule.sx — Ext 18: ergonomic defrule / ruleset.
-
-(define mod-dr-count 0)
-(define mod-dr-pass 0)
-(define mod-dr-fail 0)
-(define mod-dr-failures (list))
-
-(define
-  mod-dr-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-dr-count (+ mod-dr-count 1))
-      (if
-        (= got expected)
-        (set! mod-dr-pass (+ mod-dr-pass 1))
-        (begin
-          (set! mod-dr-fail (+ mod-dr-fail 1))
-          (append!
-            mod-dr-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; ── defrule produces the same structure as mk-rule ──
-
-(define
-  mod-dr-r
-  (mod/defrule "spam-hide" :hide (list :classification "spam")))
-(mod-dr-test! "defrule name" (mod/rule-name mod-dr-r) "spam-hide")
-(mod-dr-test! "defrule action" (mod/rule-action mod-dr-r) "hide")
-(mod-dr-test!
-  "defrule when wraps the conditions"
-  (mod/rule-when mod-dr-r)
-  (list (list :classification "spam")))
-(mod-dr-test!
-  "defrule equals mk-rule equivalent"
-  (mod/rule-when mod-dr-r)
-  (mod/rule-when
-    (mod/mk-rule "spam-hide" :hide (list (list :classification "spam")))))
-
-;; ── multi-condition + no-condition ──
-
-(define
-  mod-dr-multi
-  (mod/defrule
-    "strict"
-    :hide (list :classification "spam")
-    (list :not (list :attr "verified"))))
-(mod-dr-test!
-  "defrule collects multiple conditions"
-  (len (mod/rule-when mod-dr-multi))
-  2)
-
-(define mod-dr-catch (mod/defrule "default-keep" :keep))
-(mod-dr-test!
-  "defrule with no conditions is unconditional"
-  (mod/rule-when mod-dr-catch)
-  (list))
-
-;; ── ruleset assembles a list ──
-
-(define
-  mod-dr-rules
-  (mod/ruleset
-    (mod/defrule "spam-hide" :hide (list :classification "spam"))
-    (mod/defrule "default-keep" :keep)))
-
-(mod-dr-test! "ruleset length" (len mod-dr-rules) 2)
-(mod-dr-test!
-  "ruleset first rule name"
-  (mod/rule-name (first mod-dr-rules))
-  "spam-hide")
-
-;; ── engine works with defrule/ruleset-built policy ──
-
-(define mod-dr-spam (mod/mk-report "r1" "a" "b" "this is spam"))
-(define mod-dr-clean (mod/mk-report "r2" "a" "b" "a fine post"))
-
-(mod-dr-test!
-  "defrule policy: spam → hide"
-  (get
-    (mod/decide-report mod-dr-spam (list mod-dr-spam) mod-dr-rules)
-    :action)
-  "hide")
-(mod-dr-test!
-  "defrule policy: clean → keep"
-  (get
-    (mod/decide-report mod-dr-clean (list mod-dr-clean) mod-dr-rules)
-    :action)
-  "keep")
-(mod-dr-test!
-  "defrule policy: spam names the rule"
-  (get (mod/decide-report mod-dr-spam (list mod-dr-spam) mod-dr-rules) :rule)
-  "spam-hide")
-
-(define mod-defrule-tests-run! (fn () {:failures mod-dr-failures :total mod-dr-count :passed mod-dr-pass :failed mod-dr-fail}))

lib/mod/tests/disjunction.sx

@@ -1,145 +0,0 @@
-;; lib/mod/tests/disjunction.sx — Ext 15: disjunctive (:any) conditions.
-
-(define mod-or-count 0)
-(define mod-or-pass 0)
-(define mod-or-fail 0)
-(define mod-or-failures (list))
-
-(define
-  mod-or-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-or-count (+ mod-or-count 1))
-      (if
-        (= got expected)
-        (set! mod-or-pass (+ mod-or-pass 1))
-        (begin
-          (set! mod-or-fail (+ mod-or-fail 1))
-          (append!
-            mod-or-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; one rule, OR of two classifications → one action covers both
-(define
-  mod-or-rules
-  (list
-    (mod/mk-rule
-      "spam-or-abuse-hide"
-      :hide (list
-        (list
-          :any (list (list :classification "spam") (list :classification "abuse")))))
-    (mod/mk-rule "default-keep" :keep (list))))
-
-(define mod-or-spam (mod/mk-report "r1" "a" "b" "this is spam"))
-(define mod-or-abuse (mod/mk-report "r2" "a" "b" "harassment here"))
-(define mod-or-clean (mod/mk-report "r3" "a" "b" "a fine post"))
-
-(mod-or-test!
-  "OR: spam branch → hide"
-  (get
-    (mod/decide-report mod-or-spam (list mod-or-spam) mod-or-rules)
-    :action)
-  "hide")
-(mod-or-test!
-  "OR: abuse branch → hide"
-  (get
-    (mod/decide-report mod-or-abuse (list mod-or-abuse) mod-or-rules)
-    :action)
-  "hide")
-(mod-or-test!
-  "OR: neither branch → keep"
-  (get
-    (mod/decide-report mod-or-clean (list mod-or-clean) mod-or-rules)
-    :action)
-  "keep")
-
-;; ── goal text + proof ──
-
-(mod-or-test!
-  "cond->goal :any joins with ;"
-  (mod/cond->goal
-    (list
-      :any (list (list :classification "spam") (list :classification "abuse")))
-    "Id")
-  "(classification(Id, spam) ; classification(Id, abuse))")
-
-(define
-  mod-or-dec
-  (mod/decide-report mod-or-spam (list mod-or-spam) mod-or-rules))
-(mod-or-test!
-  "OR proof goal solved"
-  (get (first (get (get mod-or-dec :proof) :goals)) :solved)
-  true)
-(mod-or-test!
-  "OR proof goal text"
-  (get (first (get (get mod-or-dec :proof) :goals)) :goal)
-  "(classification(r1, spam) ; classification(r1, abuse))")
-
-;; ── :any composes with :not (NOR-ish) and :attr ──
-
-(define
-  mod-or-mixed-rules
-  (list
-    (mod/mk-rule
-      "spam-or-flagged-hide"
-      :hide (list
-        (list
-          :any (list (list :classification "spam") (list :attr "flagged")))))
-    (mod/mk-rule "default-keep" :keep (list))))
-
-(define
-  mod-or-flagged
-  (mod/attach-attr (mod/mk-report "r4" "a" "b" "a fine post") "flagged"))
-(mod-or-test!
-  "OR over classification|attr: flagged clean post → hide"
-  (get
-    (mod/decide-report
-      mod-or-flagged
-      (list mod-or-flagged)
-      mod-or-mixed-rules)
-    :action)
-  "hide")
-
-(mod-or-test!
-  "cond->goal :any with :not branch"
-  (mod/cond->goal
-    (list
-      :any (list
-        (list :classification "spam")
-        (list :not (list :attr "verified"))))
-    "Id")
-  "(classification(Id, spam) ; not(attr(Id, verified)))")
-
-;; AND still works alongside OR in the same :when list
-(define
-  mod-or-and-rules
-  (list
-    (mod/mk-rule
-      "spam-and-not-verified"
-      :hide (list
-        (list
-          :any (list (list :classification "spam") (list :classification "abuse")))
-        (list :not (list :attr "verified"))))
-    (mod/mk-rule "default-keep" :keep (list))))
-
-(define
-  mod-or-spam-verified
-  (mod/attach-attr (mod/mk-report "r5" "a" "b" "this is spam") "verified"))
-(mod-or-test!
-  "AND of OR + NOT: verified spam → keep"
-  (get
-    (mod/decide-report
-      mod-or-spam-verified
-      (list mod-or-spam-verified)
-      mod-or-and-rules)
-    :action)
-  "keep")
-(mod-or-test!
-  "AND of OR + NOT: unverified abuse → hide"
-  (get
-    (mod/decide-report mod-or-abuse (list mod-or-abuse) mod-or-and-rules)
-    :action)
-  "hide")
-
-(define mod-disjunction-tests-run! (fn () {:failures mod-or-failures :total mod-or-count :passed mod-or-pass :failed mod-or-fail}))

lib/mod/tests/escalation.sx

@@ -1,279 +0,0 @@
-;; lib/mod/tests/escalation.sx — Phase 3: lifecycle state machine + escalation.
-
-(define mod-esc-count 0)
-(define mod-esc-pass 0)
-(define mod-esc-fail 0)
-(define mod-esc-failures (list))
-
-(define
-  mod-esc-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-esc-count (+ mod-esc-count 1))
-      (if
-        (= got expected)
-        (set! mod-esc-pass (+ mod-esc-pass 1))
-        (begin
-          (set! mod-esc-fail (+ mod-esc-fail 1))
-          (append!
-            mod-esc-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; ── transition table guard ──
-
-(mod-esc-test!
-  "open → triaged allowed"
-  (mod/lc-can-transition? "open" "triaged")
-  true)
-(mod-esc-test!
-  "triaged → decided allowed"
-  (mod/lc-can-transition? "triaged" "decided")
-  true)
-(mod-esc-test!
-  "decided → appealed allowed"
-  (mod/lc-can-transition? "decided" "appealed")
-  true)
-(mod-esc-test!
-  "appealed → final allowed"
-  (mod/lc-can-transition? "appealed" "final")
-  true)
-(mod-esc-test!
-  "open → decided rejected"
-  (mod/lc-can-transition? "open" "decided")
-  false)
-(mod-esc-test!
-  "triaged → final rejected"
-  (mod/lc-can-transition? "triaged" "final")
-  false)
-(mod-esc-test!
-  "final is terminal"
-  (mod/lc-can-transition? "final" "open")
-  false)
-
-;; ── initial state ──
-
-(define
-  mod-esc-c0
-  (mod/mk-case (mod/mk-report "r1" "alice" "bob" "this is spam")))
-(mod-esc-test! "new case is open" (mod/case-state mod-esc-c0) "open")
-(mod-esc-test! "new case has no decision" (mod/case-decision mod-esc-c0) nil)
-
-;; ── auto-tier: spam triages + resolves to decided/hide ──
-
-(define
-  mod-esc-spam-rep
-  (list (mod/mk-report "r1" "alice" "bob" "this is spam")))
-(define
-  mod-esc-t1
-  (mod/case-triage mod-esc-c0 mod-esc-spam-rep mod/default-rules))
-(mod-esc-test! "spam triaged" (mod/case-state mod-esc-t1) "triaged")
-(mod-esc-test! "spam triage tier auto" (mod/case-tier mod-esc-t1) "auto")
-(mod-esc-test! "spam triage action hide" (mod/case-action mod-esc-t1) "hide")
-
-(define mod-esc-r1 (mod/case-resolve mod-esc-t1))
-(mod-esc-test!
-  "auto resolve → decided"
-  (mod/case-state mod-esc-r1)
-  "decided")
-(mod-esc-test!
-  "decision preserved through resolve"
-  (mod/case-action mod-esc-r1)
-  "hide")
-
-;; ── illegal transition flags :error, leaves state ──
-
-(define mod-esc-bad (mod/case-finalize mod-esc-c0))
-(mod-esc-test!
-  "finalize from open is illegal"
-  (mod/case-state mod-esc-bad)
-  "open")
-(mod-esc-test!
-  "illegal transition sets error"
-  (nil? (mod/case-error mod-esc-bad))
-  false)
-
-;; ── human-tier: repeated report escalates, resolve blocked, review decides ──
-
-(define mod-esc-rep-r (mod/mk-report "r3" "ann" "dave" "off-topic"))
-(define mod-esc-rep-reports (list mod-esc-rep-r mod-esc-rep-r mod-esc-rep-r))
-(define mod-esc-rep-c0 (mod/mk-case mod-esc-rep-r))
-(define
-  mod-esc-rep-t
-  (mod/case-triage mod-esc-rep-c0 mod-esc-rep-reports mod/default-rules))
-
-(mod-esc-test!
-  "repeated triage action escalate"
-  (mod/case-action mod-esc-rep-t)
-  "escalate")
-(mod-esc-test!
-  "repeated triage tier human"
-  (mod/case-tier mod-esc-rep-t)
-  "human")
-(mod-esc-test!
-  "repeated still triaged after triage"
-  (mod/case-state mod-esc-rep-t)
-  "triaged")
-
-(define mod-esc-rep-block (mod/case-resolve mod-esc-rep-t))
-(mod-esc-test!
-  "auto-resolve blocked on human tier (state unchanged)"
-  (mod/case-state mod-esc-rep-block)
-  "triaged")
-(mod-esc-test!
-  "blocked resolve sets error"
-  (nil? (mod/case-error mod-esc-rep-block))
-  false)
-
-(define
-  mod-esc-rep-rev
-  (mod/case-review
-    mod-esc-rep-t
-    "confirmed-abuse"
-    "human"
-    mod-esc-rep-reports
-    mod/default-rules))
-(mod-esc-test!
-  "human review → decided"
-  (mod/case-state mod-esc-rep-rev)
-  "decided")
-(mod-esc-test!
-  "human review action remove"
-  (mod/case-action mod-esc-rep-rev)
-  "remove")
-(mod-esc-test!
-  "review attached evidence to report"
-  (len (mod/report-evidence (mod/case-report mod-esc-rep-rev)))
-  1)
-
-(define mod-esc-rep-final (mod/case-finalize mod-esc-rep-rev))
-(mod-esc-test!
-  "review case finalizes"
-  (mod/case-state mod-esc-rep-final)
-  "final")
-
-;; ── appeal overrides a prior decision ──
-
-(define
-  mod-esc-ap-c0
-  (mod/mk-case (mod/mk-report "r5" "u" "v" "buy now spam")))
-(define mod-esc-ap-rep (list (mod/mk-report "r5" "u" "v" "buy now spam")))
-(define
-  mod-esc-ap-t
-  (mod/case-triage mod-esc-ap-c0 mod-esc-ap-rep mod/default-rules))
-(define mod-esc-ap-d (mod/case-resolve mod-esc-ap-t))
-
-(mod-esc-test!
-  "appeal precondition decided/hide"
-  (mod/case-action mod-esc-ap-d)
-  "hide")
-
-(define
-  mod-esc-ap-appealed
-  (mod/case-appeal
-    mod-esc-ap-d
-    "exonerated"
-    "moderator"
-    mod-esc-ap-rep
-    mod/default-rules))
-(mod-esc-test!
-  "appeal → appealed state"
-  (mod/case-state mod-esc-ap-appealed)
-  "appealed")
-(mod-esc-test!
-  "appeal overrides hide → keep"
-  (mod/case-action mod-esc-ap-appealed)
-  "keep")
-(mod-esc-test!
-  "appeal recorded via exonerated-keep rule"
-  (get (mod/case-decision mod-esc-ap-appealed) :rule)
-  "exonerated-keep")
-
-(define mod-esc-ap-final (mod/case-finalize mod-esc-ap-appealed))
-(mod-esc-test! "appealed → final" (mod/case-state mod-esc-ap-final) "final")
-
-;; ── history records the full traversal ──
-
-(mod-esc-test!
-  "full lifecycle history length 4 (triage,resolve,appeal,finalize)"
-  (len (mod/case-history mod-esc-ap-final))
-  4)
-(mod-esc-test!
-  "first history step open→triaged"
-  (get (first (mod/case-history mod-esc-ap-final)) :to)
-  "triaged")
-(mod-esc-test!
-  "last history step → final"
-  (get (nth (mod/case-history mod-esc-ap-final) 3) :to)
-  "final")
-
-;; ── api-level lifecycle façade ──
-
-(mod/reset!)
-(mod/report "alice" "bob" "this is spam")
-(mod/report "carol" "dave" "off-topic")
-(mod/report "carol" "dave" "off-topic")
-(mod/report "carol" "dave" "off-topic")
-
-(mod-esc-test!
-  "api: case opens at open"
-  (mod/case-state (mod/case-of "r1"))
-  "open")
-
-(define mod-esc-api-t1 (mod/triage "r1"))
-(mod-esc-test!
-  "api: triage spam → triaged"
-  (mod/case-state mod-esc-api-t1)
-  "triaged")
-(mod-esc-test!
-  "api: triage spam action hide"
-  (mod/case-action mod-esc-api-t1)
-  "hide")
-
-(define mod-esc-api-r1 (mod/resolve "r1"))
-(mod-esc-test!
-  "api: resolve → decided"
-  (mod/case-state mod-esc-api-r1)
-  "decided")
-(mod-esc-test!
-  "api: resolve logged decision"
-  (len (mod/audit "r1"))
-  1)
-
-(define mod-esc-api-app (mod/appeal "r1" "exonerated" "mod"))
-(mod-esc-test!
-  "api: appeal → appealed"
-  (mod/case-state mod-esc-api-app)
-  "appealed")
-(mod-esc-test!
-  "api: appeal overrides → keep"
-  (mod/case-action mod-esc-api-app)
-  "keep")
-(mod-esc-test!
-  "api: appeal logged second decision"
-  (len (mod/audit "r1"))
-  2)
-(mod-esc-test!
-  "api: finalize → final"
-  (mod/case-state (mod/finalize "r1"))
-  "final")
-
-;; r4 is the 3rd report about dave → escalates via the human tier
-(define mod-esc-api-t4 (mod/triage "r4"))
-(mod-esc-test!
-  "api: repeated triage escalates (human tier)"
-  (mod/case-tier mod-esc-api-t4)
-  "human")
-(define mod-esc-api-blk (mod/resolve "r4"))
-(mod-esc-test!
-  "api: escalated resolve blocked"
-  (mod/case-state mod-esc-api-blk)
-  "triaged")
-(define mod-esc-api-rev (mod/review "r4" "confirmed-abuse" "human"))
-(mod-esc-test!
-  "api: review → decided/remove"
-  (mod/case-action mod-esc-api-rev)
-  "remove")
-(mod-esc-test! "api: unknown id → nil" (mod/triage "r99") nil)
-
-(define mod-escalation-tests-run! (fn () {:failures mod-esc-failures :total mod-esc-count :passed mod-esc-pass :failed mod-esc-fail}))

lib/mod/tests/extensions.sx

@@ -1,313 +0,0 @@
-;; lib/mod/tests/extensions.sx — beyond-roadmap extensions.
-;;
-;; Ext 1: negation-as-failure conditions (:not / :attr) + report attributes.
-;;        "hide spam UNLESS the author is verified" (closed-world reasoning).
-;; Ext 2: weighted/aggregate evidence scoring (:score-at-least) + report signals.
-;;        Many low-confidence signals accumulate past a threshold via Prolog
-;;        aggregate_all(sum(W), ...).
-;; Ext 3: human-readable proof explanation (mod/explain) over the proof tree.
-;; Demonstrated with custom rule sets so the default policy (and its conformance
-;; tests) stays untouched.
-
-(define mod-ext-count 0)
-(define mod-ext-pass 0)
-(define mod-ext-fail 0)
-(define mod-ext-failures (list))
-
-(define
-  mod-ext-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-ext-count (+ mod-ext-count 1))
-      (if
-        (= got expected)
-        (set! mod-ext-pass (+ mod-ext-pass 1))
-        (begin
-          (set! mod-ext-fail (+ mod-ext-fail 1))
-          (append!
-            mod-ext-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; ── Ext 1: report attributes ──
-
-(define mod-ext-r0 (mod/mk-report "r1" "a" "b" "this is spam"))
-(mod-ext-test!
-  "fresh report has no attrs"
-  (len (mod/report-attrs mod-ext-r0))
-  0)
-(define mod-ext-rv (mod/attach-attr mod-ext-r0 "verified"))
-(mod-ext-test!
-  "attach-attr adds one attr"
-  (len (mod/report-attrs mod-ext-rv))
-  1)
-(mod-ext-test!
-  "attach-attr preserves evidence field"
-  (len
-    (mod/report-evidence
-      (mod/attach-evidence mod-ext-rv (mod/mk-evidence "x" "y"))))
-  1)
-(mod-ext-test!
-  "attach-evidence preserves attrs"
-  (len
-    (mod/report-attrs
-      (mod/attach-evidence mod-ext-rv (mod/mk-evidence "x" "y"))))
-  1)
-
-;; ── Ext 1: negation-as-failure: spam hidden unless author verified ──
-
-(define
-  mod-ext-rules
-  (list
-    (mod/mk-rule
-      "spam-unverified-hide"
-      :hide (list
-        (list :classification "spam")
-        (list :not (list :attr "verified"))))
-    (mod/mk-rule "default-keep" :keep (list))))
-
-(define mod-ext-spam-plain (mod/mk-report "p1" "a" "b" "this is spam"))
-(define
-  mod-ext-spam-verified
-  (mod/attach-attr (mod/mk-report "p2" "a" "b" "this is spam") "verified"))
-(define mod-ext-clean (mod/mk-report "p3" "a" "b" "a fine post"))
-
-(mod-ext-test!
-  "unverified spam → hide"
-  (get
-    (mod/decide-report
-      mod-ext-spam-plain
-      (list mod-ext-spam-plain)
-      mod-ext-rules)
-    :action)
-  "hide")
-(mod-ext-test!
-  "verified author spam → keep (negation blocks)"
-  (get
-    (mod/decide-report
-      mod-ext-spam-verified
-      (list mod-ext-spam-verified)
-      mod-ext-rules)
-    :action)
-  "keep")
-(mod-ext-test!
-  "clean post → keep"
-  (get
-    (mod/decide-report mod-ext-clean (list mod-ext-clean) mod-ext-rules)
-    :action)
-  "keep")
-
-;; ── Ext 1: negation appears in the goal text + proof ──
-
-(define
-  mod-ext-dec
-  (mod/decide-report
-    mod-ext-spam-plain
-    (list mod-ext-spam-plain)
-    mod-ext-rules))
-(define mod-ext-goals (get (get mod-ext-dec :proof) :goals))
-
-(mod-ext-test!
-  "rule that matched is spam-unverified-hide"
-  (get mod-ext-dec :rule)
-  "spam-unverified-hide")
-(mod-ext-test! "proof has two goals" (len mod-ext-goals) 2)
-(mod-ext-test!
-  "negation goal text"
-  (get (nth mod-ext-goals 1) :goal)
-  "not(attr(p1, verified))")
-(mod-ext-test!
-  "negation goal solved for unverified"
-  (get (nth mod-ext-goals 1) :solved)
-  true)
-
-;; ── Ext 1: cond->goal compiles :attr and :not directly ──
-
-(mod-ext-test!
-  "cond->goal :attr"
-  (mod/cond->goal (list :attr "verified") "Id")
-  "attr(Id, verified)")
-(mod-ext-test!
-  "cond->goal :not wraps inner"
-  (mod/cond->goal (list :not (list :classification "spam")) "Id")
-  "not(classification(Id, spam))")
-
-;; ── Ext 1: positive :attr condition (allowlist-style) ──
-
-(define
-  mod-ext-allow-rules
-  (list
-    (mod/mk-rule "trusted-keep" :keep (list (list :attr "trusted")))
-    (mod/mk-rule "spam-hide" :hide (list (list :classification "spam")))
-    (mod/mk-rule "default-keep" :keep (list))))
-
-(define
-  mod-ext-trusted-spam
-  (mod/attach-attr (mod/mk-report "t1" "a" "b" "this is spam") "trusted"))
-(mod-ext-test!
-  "trusted attr exempts spam → keep"
-  (get
-    (mod/decide-report
-      mod-ext-trusted-spam
-      (list mod-ext-trusted-spam)
-      mod-ext-allow-rules)
-    :action)
-  "keep")
-
-;; ── Ext 2: weighted signals + aggregate scoring ──
-
-(define mod-ext-s0 (mod/mk-report "s1" "a" "b" "neutral"))
-(mod-ext-test!
-  "fresh report has no signals"
-  (len (mod/report-signals mod-ext-s0))
-  0)
-(define
-  mod-ext-s1
-  (mod/attach-signal mod-ext-s0 (mod/mk-signal "link" 2)))
-(mod-ext-test!
-  "attach-signal adds one"
-  (len (mod/report-signals mod-ext-s1))
-  1)
-(mod-ext-test!
-  "attach-signal preserves attrs"
-  (len
-    (mod/report-attrs
-      (mod/attach-signal mod-ext-rv (mod/mk-signal "x" 1))))
-  1)
-
-(define
-  mod-ext-score-rules
-  (list
-    (mod/mk-rule
-      "high-score-hide"
-      :hide (list (list :score-at-least 5)))
-    (mod/mk-rule "default-keep" :keep (list))))
-
-;; one weak signal (2) — below threshold
-(define
-  mod-ext-weak
-  (mod/attach-signal
-    (mod/mk-report "w1" "a" "b" "neutral")
-    (mod/mk-signal "link" 2)))
-(mod-ext-test!
-  "single weak signal → keep (below threshold)"
-  (get
-    (mod/decide-report mod-ext-weak (list mod-ext-weak) mod-ext-score-rules)
-    :action)
-  "keep")
-
-;; three signals summing to 6 — over threshold
-(define
-  mod-ext-strong0
-  (mod/attach-signal
-    (mod/mk-report "w2" "a" "b" "neutral")
-    (mod/mk-signal "link" 2)))
-(define
-  mod-ext-strong1
-  (mod/attach-signal mod-ext-strong0 (mod/mk-signal "newaccount" 2)))
-(define
-  mod-ext-strong
-  (mod/attach-signal mod-ext-strong1 (mod/mk-signal "burst" 2)))
-(mod-ext-test!
-  "accumulated signals (2+2+2=6) → hide"
-  (get
-    (mod/decide-report
-      mod-ext-strong
-      (list mod-ext-strong)
-      mod-ext-score-rules)
-    :action)
-  "hide")
-(mod-ext-test!
-  "scoring rule named in decision"
-  (get
-    (mod/decide-report
-      mod-ext-strong
-      (list mod-ext-strong)
-      mod-ext-score-rules)
-    :rule)
-  "high-score-hide")
-
-;; exactly at threshold (5) fires
-(define
-  mod-ext-exact0
-  (mod/attach-signal
-    (mod/mk-report "w3" "a" "b" "neutral")
-    (mod/mk-signal "link" 3)))
-(define
-  mod-ext-exact
-  (mod/attach-signal mod-ext-exact0 (mod/mk-signal "burst" 2)))
-(mod-ext-test!
-  "exactly at threshold (5) → hide"
-  (get
-    (mod/decide-report mod-ext-exact (list mod-ext-exact) mod-ext-score-rules)
-    :action)
-  "hide")
-
-(mod-ext-test!
-  "cond->goal :score-at-least"
-  (mod/cond->goal (list :score-at-least 5) "Id")
-  "aggregate_all(sum(W), signal(Id, _, W), T), T >= 5")
-
-;; ── Ext 3: human-readable proof explanation ──
-
-(define mod-ext-spam-explain (mod/explain mod-ext-dec))
-
-(mod-ext-test!
-  "explain mentions the report id"
-  (mod/str-contains? mod-ext-spam-explain "Report p1")
-  true)
-(mod-ext-test!
-  "explain mentions the action"
-  (mod/str-contains? mod-ext-spam-explain "hide")
-  true)
-(mod-ext-test!
-  "explain mentions the rule"
-  (mod/str-contains? mod-ext-spam-explain "spam-unverified-hide")
-  true)
-(mod-ext-test!
-  "explain marks proved goals"
-  (mod/str-contains? mod-ext-spam-explain "[proved]")
-  true)
-(mod-ext-test!
-  "explain renders the evidence line"
-  (mod/str-contains? mod-ext-spam-explain "Evidence: spam")
-  true)
-
-;; count-rule explanation shows the unification bindings
-(define mod-ext-rep-r (mod/mk-report "rc" "ann" "dave" "off-topic"))
-(define
-  mod-ext-rep-d
-  (mod/decide-report
-    mod-ext-rep-r
-    (list mod-ext-rep-r mod-ext-rep-r mod-ext-rep-r)
-    mod/default-rules))
-(define mod-ext-rep-explain (mod/explain mod-ext-rep-d))
-(mod-ext-test!
-  "explain shows binding N=3"
-  (mod/str-contains? mod-ext-rep-explain "N=3")
-  true)
-(mod-ext-test!
-  "explain shows subject binding"
-  (mod/str-contains? mod-ext-rep-explain "dave")
-  true)
-
-;; explain-goal direct: unproved goal gets [unproved]
-(mod-ext-test!
-  "explain-goal marks unproved"
-  (mod/str-contains? (mod/explain-goal {:solved false :goal "attr(x, foo)" :bindings {}}) "[unproved]")
-  true)
-;; explain-binds renders key=value pairs
-(mod-ext-test!
-  "explain-binds renders pair"
-  (mod/explain-binds {:N "3"})
-  "N=3")
-;; no-evidence decision says (none)
-(define
-  mod-ext-keep-d
-  (mod/decide-report mod-ext-clean (list mod-ext-clean) mod-ext-rules))
-(mod-ext-test!
-  "explain (none) for empty evidence"
-  (mod/str-contains? (mod/explain mod-ext-keep-d) "Evidence: (none)")
-  true)
-
-(define mod-extensions-tests-run! (fn () {:failures mod-ext-failures :total mod-ext-count :passed mod-ext-pass :failed mod-ext-fail}))

lib/mod/tests/fed.sx

@@ -1,154 +0,0 @@
-;; lib/mod/tests/fed.sx — Phase 4: federation (mock fed-sx).
-
-(define mod-fed-count 0)
-(define mod-fed-pass 0)
-(define mod-fed-fail 0)
-(define mod-fed-failures (list))
-
-(define
-  mod-fed-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-fed-count (+ mod-fed-count 1))
-      (if
-        (= got expected)
-        (set! mod-fed-pass (+ mod-fed-pass 1))
-        (begin
-          (set! mod-fed-fail (+ mod-fed-fail 1))
-          (append!
-            mod-fed-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-(mod/reset!)
-(mod/fed-reset!)
-
-;; ── trust model (advisory by default) ──
-
-(mod-fed-test! "trust initially false" (mod/trusted? "peerA" :mod) false)
-(mod/grant-trust "peerA" :mod)
-(mod-fed-test! "trust after grant" (mod/trusted? "peerA" :mod) true)
-(mod-fed-test! "trust wrong scope" (mod/trusted? "peerA" :other) false)
-(mod-fed-test! "trust other peer" (mod/trusted? "peerB" :mod) false)
-(mod/revoke-trust "peerA" :mod)
-(mod-fed-test! "trust after revoke" (mod/trusted? "peerA" :mod) false)
-
-;; ── cross-instance reports ──
-
-(define
-  mod-fed-fr
-  (mod/fed-receive-report "peerB" "alice" "bob" "this is spam"))
-(mod-fed-test! "fed report assigned id r1" (mod/report-id mod-fed-fr) "r1")
-(mod-fed-test! "fed report origin is peer" (mod/report-origin "r1") "peerB")
-(define mod-fed-local (mod/report "carol" "dave" "fine post"))
-(mod-fed-test!
-  "local report origin is local"
-  (mod/report-origin (mod/report-id mod-fed-local))
-  "local")
-(mod-fed-test!
-  "engine decides fed report (spam → hide)"
-  (get
-    (mod/decide-report mod-fed-fr (list mod-fed-fr) mod/default-rules)
-    :action)
-  "hide")
-
-;; ── decision sharing (outbox) ──
-
-(define mod-fed-dec {:action "hide" :rule "spam-hide" :report-id "r1"})
-(define
-  mod-fed-shared
-  (mod/fed-share-decision mod-fed-dec (list "peerB" "peerC")))
-(mod-fed-test! "share returns notified peers" (len mod-fed-shared) 2)
-(mod-fed-test! "outbox has two messages" (len (mod/fed-outbox)) 2)
-(mod-fed-test!
-  "outbox message type decision"
-  (get (first (mod/fed-outbox)) :type)
-  "decision")
-(mod-fed-test!
-  "outbox message addressed to peer"
-  (get (first (mod/fed-outbox)) :to)
-  "peerB")
-
-;; ── receiving a peer decision: advisory unless trusted ──
-
-(define mod-fed-untrusted (mod/fed-receive-decision "peerZ" {:action "remove" :rule "reviewer-remove" :report-id "rx"}))
-(mod-fed-test!
-  "untrusted decision not applied"
-  (get mod-fed-untrusted :applied)
-  false)
-(mod-fed-test!
-  "untrusted decision advisory"
-  (get mod-fed-untrusted :advisory)
-  true)
-(mod-fed-test!
-  "untrusted decision absent from applied log"
-  (mod/fed-applied-action "rx")
-  nil)
-(mod-fed-test!
-  "advisory log records suggestion"
-  (len mod/*fed-advisory*)
-  1)
-
-(mod/grant-trust "peerT" :mod)
-(define mod-fed-trusted (mod/fed-receive-decision "peerT" {:action "hide" :rule "spam-hide" :report-id "ry"}))
-(mod-fed-test! "trusted decision applied" (get mod-fed-trusted :applied) true)
-(mod-fed-test!
-  "trusted decision binds locally"
-  (get (mod/fed-applied-action "ry") :action)
-  "hide")
-
-;; ── revocation ──
-
-(mod-fed-test!
-  "applied action not yet revoked"
-  (get (mod/fed-applied-action "ry") :revoked)
-  false)
-(mod/fed-revoke! "ry" "manual")
-(mod-fed-test!
-  "revoke marks applied action revoked"
-  (get (mod/fed-applied-action "ry") :revoked)
-  true)
-(mod-fed-test!
-  "revoke emits a revocation message"
-  (mod/any? (fn (m) (= (get m :type) "revocation")) (mod/fed-outbox))
-  true)
-
-;; revoke-if-invalidated: proof still holds → no revocation
-(define mod-fed-spam-r (mod/mk-report "rs" "a" "b" "this is spam"))
-(define
-  mod-fed-spam-d
-  (mod/decide-report mod-fed-spam-r (list mod-fed-spam-r) mod/default-rules))
-(mod-fed-test! "spam decision is hide" (get mod-fed-spam-d :action) "hide")
-(define
-  mod-fed-rev-same
-  (mod/fed-revoke-if-invalidated
-    mod-fed-spam-r
-    mod-fed-spam-d
-    (list mod-fed-spam-r)
-    mod/default-rules))
-(mod-fed-test!
-  "valid proof → not revoked"
-  (get mod-fed-rev-same :revoked)
-  false)
-
-;; exoneration invalidates the proof → revocation
-(define
-  mod-fed-exon-r
-  (mod/attach-evidence mod-fed-spam-r (mod/mk-evidence "exonerated" "mod")))
-(define
-  mod-fed-rev-inv
-  (mod/fed-revoke-if-invalidated
-    mod-fed-exon-r
-    mod-fed-spam-d
-    (list mod-fed-exon-r)
-    mod/default-rules))
-(mod-fed-test!
-  "invalidated proof → revoked"
-  (get mod-fed-rev-inv :revoked)
-  true)
-(mod-fed-test!
-  "re-decision after exoneration is keep"
-  (get (get mod-fed-rev-inv :decision) :action)
-  "keep")
-
-(define mod-fed-tests-run! (fn () {:failures mod-fed-failures :total mod-fed-count :passed mod-fed-pass :failed mod-fed-fail}))

lib/mod/tests/link.sx

@@ -1,86 +0,0 @@
-;; lib/mod/tests/link.sx — Ext 4: report linking + dedup.
-
-(define mod-lnk-count 0)
-(define mod-lnk-pass 0)
-(define mod-lnk-fail 0)
-(define mod-lnk-failures (list))
-
-(define
-  mod-lnk-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-lnk-count (+ mod-lnk-count 1))
-      (if
-        (= got expected)
-        (set! mod-lnk-pass (+ mod-lnk-pass 1))
-        (begin
-          (set! mod-lnk-fail (+ mod-lnk-fail 1))
-          (append!
-            mod-lnk-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; ── link-key + dedup ──
-
-(define mod-lnk-a (mod/mk-report "r1" "alice" "bob" "this is spam"))
-(define mod-lnk-a2 (mod/mk-report "r2" "alice" "bob" "THIS IS SPAM"))
-(define mod-lnk-b (mod/mk-report "r3" "carol" "bob" "abuse"))
-(define mod-lnk-c (mod/mk-report "r4" "alice" "eve" "this is spam"))
-
-(mod-lnk-test!
-  "identical reports share a link key (case-insensitive reason)"
-  (= (mod/link-key mod-lnk-a) (mod/link-key mod-lnk-a2))
-  true)
-(mod-lnk-test!
-  "different reporter → different key"
-  (= (mod/link-key mod-lnk-a) (mod/link-key mod-lnk-b))
-  false)
-(mod-lnk-test!
-  "different subject → different key"
-  (= (mod/link-key mod-lnk-a) (mod/link-key mod-lnk-c))
-  false)
-
-(define mod-lnk-set (list mod-lnk-a mod-lnk-a2 mod-lnk-b mod-lnk-c))
-(mod-lnk-test!
-  "dedup collapses identical reports"
-  (len (mod/dedup-reports mod-lnk-set))
-  3)
-(mod-lnk-test!
-  "duplicate-count counts collapsed"
-  (mod/duplicate-count mod-lnk-set)
-  1)
-(mod-lnk-test!
-  "dedup of all-distinct keeps all"
-  (len (mod/dedup-reports (list mod-lnk-a mod-lnk-b mod-lnk-c)))
-  3)
-
-;; ── Prolog-backed relational linking ──
-
-(mod-lnk-test!
-  "related-ids finds all reports about subject"
-  (len (mod/related-ids "bob" mod-lnk-set))
-  3)
-(mod-lnk-test!
-  "related-ids returns the ids"
-  (mod/related-ids "eve" mod-lnk-set)
-  (list "r4"))
-(mod-lnk-test!
-  "related-ids empty for unknown subject"
-  (mod/related-ids "nobody" mod-lnk-set)
-  (list))
-
-;; reporters: bob reported by alice (x2) + carol → 3 raw, 2 distinct
-(mod-lnk-test!
-  "reporters-of counts all reports"
-  (len (mod/reporters-of "bob" mod-lnk-set))
-  3)
-(mod-lnk-test!
-  "distinct reporters-of dedups reporters"
-  (len (mod/distinct-reporters-of "bob" mod-lnk-set))
-  2)
-(mod-lnk-test!
-  "distinct utility removes dups"
-  (mod/distinct (list "a" "b" "a" "c" "b"))
-  (list "a" "b" "c"))
-
-(define mod-link-tests-run! (fn () {:failures mod-lnk-failures :total mod-lnk-count :passed mod-lnk-pass :failed mod-lnk-fail}))

lib/mod/tests/lint.sx

@@ -1,122 +0,0 @@
-;; lib/mod/tests/lint.sx — Ext 5: policy rule-set static analysis.
-
-(define mod-lint-count 0)
-(define mod-lint-pass 0)
-(define mod-lint-fail 0)
-(define mod-lint-failures (list))
-
-(define
-  mod-lint-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-lint-count (+ mod-lint-count 1))
-      (if
-        (= got expected)
-        (set! mod-lint-pass (+ mod-lint-pass 1))
-        (begin
-          (set! mod-lint-fail (+ mod-lint-fail 1))
-          (append!
-            mod-lint-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; ── the default rule set is well-formed ──
-
-(mod-lint-test!
-  "default rules: no unreachable"
-  (mod/unreachable-rules mod/default-rules)
-  (list))
-(mod-lint-test!
-  "default rules: has catch-all"
-  (mod/has-catchall? mod/default-rules)
-  true)
-(mod-lint-test!
-  "default rules: no duplicate names"
-  (mod/duplicate-rule-names mod/default-rules)
-  (list))
-(mod-lint-test!
-  "default rules: well-formed"
-  (mod/rules-ok? mod/default-rules)
-  true)
-
-;; ── unreachable detection ──
-
-(define
-  mod-lint-shadowed
-  (list
-    (mod/mk-rule "spam-hide" :hide (list (list :classification "spam")))
-    (mod/mk-rule "catch-all" :keep (list))
-    (mod/mk-rule
-      "abuse-remove"
-      :remove (list (list :classification "abuse")))
-    (mod/mk-rule
-      "repeated"
-      :escalate (list (list :count-at-least 3)))))
-
-(mod-lint-test!
-  "rules after catch-all are unreachable"
-  (mod/unreachable-rules mod-lint-shadowed)
-  (list "abuse-remove" "repeated"))
-(mod-lint-test!
-  "shadowed rule set is not ok"
-  (mod/rules-ok? mod-lint-shadowed)
-  false)
-
-;; ── missing catch-all ──
-
-(define
-  mod-lint-nocatch
-  (list
-    (mod/mk-rule "spam-hide" :hide (list (list :classification "spam")))
-    (mod/mk-rule
-      "abuse-remove"
-      :remove (list (list :classification "abuse")))))
-
-(mod-lint-test!
-  "no catch-all detected"
-  (mod/has-catchall? mod-lint-nocatch)
-  false)
-(mod-lint-test!
-  "no unreachable when no catch-all"
-  (mod/unreachable-rules mod-lint-nocatch)
-  (list))
-(mod-lint-test!
-  "no-catch-all rule set is not ok"
-  (mod/rules-ok? mod-lint-nocatch)
-  false)
-
-;; ── duplicate names ──
-
-(define
-  mod-lint-dups
-  (list
-    (mod/mk-rule "x" :hide (list (list :classification "spam")))
-    (mod/mk-rule "x" :remove (list (list :classification "abuse")))
-    (mod/mk-rule "default" :keep (list))))
-
-(mod-lint-test!
-  "duplicate names detected"
-  (mod/duplicate-rule-names mod-lint-dups)
-  (list "x"))
-(mod-lint-test!
-  "duplicate-name rule set is not ok"
-  (mod/rules-ok? mod-lint-dups)
-  false)
-
-;; ── helpers ──
-
-(mod-lint-test!
-  "rule-unconditional? true for empty when"
-  (mod/rule-unconditional? (mod/mk-rule "d" :keep (list)))
-  true)
-(mod-lint-test!
-  "rule-unconditional? false with conditions"
-  (mod/rule-unconditional?
-    (mod/mk-rule "s" :hide (list (list :classification "spam"))))
-  false)
-(mod-lint-test!
-  "count-eq counts occurrences"
-  (mod/count-eq "a" (list "a" "b" "a"))
-  2)
-
-(define mod-lint-tests-run! (fn () {:failures mod-lint-failures :total mod-lint-count :passed mod-lint-pass :failed mod-lint-fail}))

lib/mod/tests/offenders.sx

@@ -1,115 +0,0 @@
-;; lib/mod/tests/offenders.sx — Ext 7: repeat-offender escalation.
-
-(define mod-off-count 0)
-(define mod-off-pass 0)
-(define mod-off-fail 0)
-(define mod-off-failures (list))
-
-(define
-  mod-off-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-off-count (+ mod-off-count 1))
-      (if
-        (= got expected)
-        (set! mod-off-pass (+ mod-off-pass 1))
-        (begin
-          (set! mod-off-fail (+ mod-off-fail 1))
-          (append!
-            mod-off-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; ── sanction? predicate ──
-
-(mod-off-test! "hide is a sanction" (mod/sanction? "hide") true)
-(mod-off-test! "remove is a sanction" (mod/sanction? "remove") true)
-(mod-off-test! "ban is a sanction" (mod/sanction? "ban") true)
-(mod-off-test! "keep is not a sanction" (mod/sanction? "keep") false)
-(mod-off-test! "escalate is not a sanction" (mod/sanction? "escalate") false)
-
-;; ── repeat-offender escalation over the audit log ──
-
-(mod/reset!)
-(mod/report "u1" "spammer" "this is spam")
-(mod/report "u2" "spammer" "buy now offer")
-(mod/report "u3" "spammer" "click here free money")
-(mod/report "u4" "innocent" "fine post")
-
-(mod-off-test!
-  "no sanctions before any decision"
-  (mod/subject-sanctions "spammer")
-  0)
-
-(define mod-off-d1 (mod/decide-escalating "r1" 2))
-(mod-off-test!
-  "first spam → hide (0 priors)"
-  (get mod-off-d1 :action)
-  "hide")
-(mod-off-test!
-  "one sanction recorded"
-  (mod/subject-sanctions "spammer")
-  1)
-
-(define mod-off-d2 (mod/decide-escalating "r2" 2))
-(mod-off-test!
-  "second spam → hide (1 prior, below k=2)"
-  (get mod-off-d2 :action)
-  "hide")
-(mod-off-test!
-  "two sanctions recorded"
-  (mod/subject-sanctions "spammer")
-  2)
-
-(define mod-off-d3 (mod/decide-escalating "r3" 2))
-(mod-off-test!
-  "third spam → ban (2 priors ≥ k)"
-  (get mod-off-d3 :action)
-  "ban")
-(mod-off-test!
-  "ban decision names repeat-offender rule"
-  (get mod-off-d3 :rule)
-  "repeat-offender-ban")
-(mod-off-test!
-  "ban proof records prior sanction count"
-  (get (get mod-off-d3 :proof) :prior-sanctions)
-  2)
-
-;; ── different subjects accumulate independently ──
-
-(define mod-off-d4 (mod/decide-escalating "r4" 2))
-(mod-off-test!
-  "innocent keep → not escalated"
-  (get mod-off-d4 :action)
-  "keep")
-(mod-off-test!
-  "innocent has no sanctions"
-  (mod/subject-sanctions "innocent")
-  0)
-(mod-off-test!
-  "repeat-offender? true for spammer at k=2"
-  (mod/repeat-offender? "spammer" 2)
-  true)
-(mod-off-test!
-  "repeat-offender? false for innocent at k=1"
-  (mod/repeat-offender? "innocent" 1)
-  false)
-
-;; ── non-sanction decisions are never upgraded to ban ──
-;; r5 is a clean post, but it is the 4th report about "spammer", so the
-;; repeated-report rule escalates it. escalate is not a sanction, so it passes
-;; through decide-escalating unchanged (never becomes :ban).
-
-(mod/report "u5" "spammer" "a perfectly fine post")
-(define mod-off-d5 (mod/decide-escalating "r5" 1))
-(mod-off-test!
-  "non-sanction (escalate) decision is not upgraded to ban"
-  (get mod-off-d5 :action)
-  "escalate")
-
-(mod-off-test!
-  "decide-escalating unknown id → nil"
-  (mod/decide-escalating "r99" 2)
-  nil)
-
-(define mod-offenders-tests-run! (fn () {:failures mod-off-failures :total mod-off-count :passed mod-off-pass :failed mod-off-fail}))

lib/mod/tests/pipeline.sx

@@ -1,112 +0,0 @@
-;; lib/mod/tests/pipeline.sx — Ext 19: end-to-end triage orchestration.
-
-(define mod-pp-count 0)
-(define mod-pp-pass 0)
-(define mod-pp-fail 0)
-(define mod-pp-failures (list))
-
-(define
-  mod-pp-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-pp-count (+ mod-pp-count 1))
-      (if
-        (= got expected)
-        (set! mod-pp-pass (+ mod-pp-pass 1))
-        (begin
-          (set! mod-pp-fail (+ mod-pp-fail 1))
-          (append!
-            mod-pp-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-(mod/policies-reset!)
-(mod/register-policy!
-  "market"
-  (mod/ruleset
-    (mod/defrule "market-spam-remove" :remove (list :classification "spam"))
-    (mod/defrule "default-keep" :keep)))
-
-;; ── spam in the market domain: full bundle ──
-
-(define mod-pp-spam (mod/mk-report "r1" "u" "bob" "this is spam"))
-(define
-  mod-pp
-  (mod/triage-pipeline "market" mod-pp-spam (list mod-pp-spam) "inst.example"))
-
-(mod-pp-test!
-  "pipeline action (market policy → remove)"
-  (mod/pipeline-action mod-pp)
-  "remove")
-(mod-pp-test! "pipeline rule" (get mod-pp :rule) "market-spam-remove")
-(mod-pp-test!
-  "pipeline explanation mentions the action"
-  (mod/str-contains? (get mod-pp :explanation) "remove")
-  true)
-(mod-pp-test!
-  "pipeline activity is Delete (remove)"
-  (get (mod/pipeline-activity mod-pp) :type)
-  "Delete")
-(mod-pp-test!
-  "pipeline activity object is the report"
-  (get (mod/pipeline-activity mod-pp) :object)
-  "r1")
-(mod-pp-test!
-  "pipeline wire round-trips to the same action"
-  (get (mod/wire->decision (mod/pipeline-wire mod-pp)) :action)
-  "remove")
-
-;; ── same report, blog domain (default) → hide, Flag ──
-
-(define
-  mod-pp-blog
-  (mod/triage-pipeline "blog" mod-pp-spam (list mod-pp-spam) "inst.example"))
-(mod-pp-test!
-  "blog default policy → hide"
-  (mod/pipeline-action mod-pp-blog)
-  "hide")
-(mod-pp-test!
-  "blog activity is Flag"
-  (get (mod/pipeline-activity mod-pp-blog) :type)
-  "Flag")
-
-;; ── clean report: keep, no activity, explanation says (none) ──
-
-(define mod-pp-clean (mod/mk-report "r2" "u" "eve" "a fine post"))
-(define
-  mod-pp-k
-  (mod/triage-pipeline
-    "market"
-    mod-pp-clean
-    (list mod-pp-clean)
-    "inst.example"))
-(mod-pp-test! "clean → keep" (mod/pipeline-action mod-pp-k) "keep")
-(mod-pp-test! "keep → no activity" (mod/pipeline-activity mod-pp-k) nil)
-(mod-pp-test!
-  "keep explanation says no evidence"
-  (mod/str-contains? (get mod-pp-k :explanation) "Evidence: (none)")
-  true)
-(mod-pp-test!
-  "keep wire still round-trips"
-  (get (mod/wire->decision (mod/pipeline-wire mod-pp-k)) :rule)
-  "default-keep")
-
-;; ── federated handoff: market decision crosses to a peer, trust-gated ──
-
-(mod/fed-reset!)
-(define mod-pp-peer-dec (mod/wire->decision (mod/pipeline-wire mod-pp)))
-(mod-pp-test!
-  "untrusted peer: market decision is advisory"
-  (get (mod/fed-receive-decision "peerX" mod-pp-peer-dec) :applied)
-  false)
-(mod/grant-trust "peerY" :mod)
-(mod-pp-test!
-  "trusted peer: market decision applies"
-  (get (mod/fed-receive-decision "peerY" mod-pp-peer-dec) :applied)
-  true)
-(mod-pp-test!
-  "applied action is remove"
-  (get (mod/fed-applied-action "r1") :action)
-  "remove")
-
-(define mod-pipeline-tests-run! (fn () {:failures mod-pp-failures :total mod-pp-count :passed mod-pp-pass :failed mod-pp-fail}))

lib/mod/tests/policies.sx

@@ -1,112 +0,0 @@
-;; lib/mod/tests/policies.sx — Ext 17: per-domain policy registry.
-
-(define mod-pol-count 0)
-(define mod-pol-pass 0)
-(define mod-pol-fail 0)
-(define mod-pol-failures (list))
-
-(define
-  mod-pol-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-pol-count (+ mod-pol-count 1))
-      (if
-        (= got expected)
-        (set! mod-pol-pass (+ mod-pol-pass 1))
-        (begin
-          (set! mod-pol-fail (+ mod-pol-fail 1))
-          (append!
-            mod-pol-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-(mod/policies-reset!)
-
-;; market is strict: spam is removed outright, not just hidden
-(define
-  mod-pol-market-rules
-  (list
-    (mod/mk-rule
-      "market-spam-remove"
-      :remove (list (list :classification "spam")))
-    (mod/mk-rule "default-keep" :keep (list))))
-
-(mod-pol-test!
-  "unregistered domain falls back to default"
-  (mod/policy-registered? "market")
-  false)
-(mod/register-policy! "market" mod-pol-market-rules)
-(mod-pol-test!
-  "domain registered after register!"
-  (mod/policy-registered? "market")
-  true)
-
-(define mod-pol-spam (mod/mk-report "r1" "a" "b" "this is spam"))
-
-;; ── same report, different domain → different action ──
-
-(mod-pol-test!
-  "market policy removes spam"
-  (get (mod/decide-in "market" mod-pol-spam (list mod-pol-spam)) :action)
-  "remove")
-(mod-pol-test!
-  "market decision uses market rule"
-  (get (mod/decide-in "market" mod-pol-spam (list mod-pol-spam)) :rule)
-  "market-spam-remove")
-(mod-pol-test!
-  "blog (unregistered) uses default → hide"
-  (get (mod/decide-in "blog" mod-pol-spam (list mod-pol-spam)) :action)
-  "hide")
-(mod-pol-test!
-  "blog decision uses default rule"
-  (get (mod/decide-in "blog" mod-pol-spam (list mod-pol-spam)) :rule)
-  "spam-hide")
-
-;; ── policy-for resolution ──
-
-(mod-pol-test!
-  "policy-for market returns market rules"
-  (mod/policy-for "market")
-  mod-pol-market-rules)
-(mod-pol-test!
-  "policy-for unknown returns default"
-  (mod/policy-for "events")
-  mod/default-rules)
-(mod-pol-test!
-  "registered-domains lists market"
-  (mod/registered-domains)
-  (list "market"))
-
-;; ── a second domain ──
-
-(define
-  mod-pol-events-rules
-  (list (mod/mk-rule "events-keep-all" :keep (list))))
-
-(mod/register-policy! "events" mod-pol-events-rules)
-(mod-pol-test!
-  "events policy keeps everything (even spam)"
-  (get (mod/decide-in "events" mod-pol-spam (list mod-pol-spam)) :action)
-  "keep")
-(mod-pol-test!
-  "two domains registered"
-  (len (mod/registered-domains))
-  2)
-(mod-pol-test!
-  "market still removes after second registration"
-  (get (mod/decide-in "market" mod-pol-spam (list mod-pol-spam)) :action)
-  "remove")
-
-;; ── clean report is keep everywhere ──
-
-(define mod-pol-clean (mod/mk-report "r2" "a" "b" "a fine post"))
-(mod-pol-test!
-  "clean report keep in market"
-  (get (mod/decide-in "market" mod-pol-clean (list mod-pol-clean)) :action)
-  "keep")
-(mod-pol-test!
-  "clean report keep in blog"
-  (get (mod/decide-in "blog" mod-pol-clean (list mod-pol-clean)) :action)
-  "keep")
-
-(define mod-policies-tests-run! (fn () {:failures mod-pol-failures :total mod-pol-count :passed mod-pol-pass :failed mod-pol-fail}))

lib/mod/tests/quorum.sx

@@ -1,119 +0,0 @@
-;; lib/mod/tests/quorum.sx — Ext 8: quorum over distinct reporters.
-
-(define mod-q-count 0)
-(define mod-q-pass 0)
-(define mod-q-fail 0)
-(define mod-q-failures (list))
-
-(define
-  mod-q-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-q-count (+ mod-q-count 1))
-      (if
-        (= got expected)
-        (set! mod-q-pass (+ mod-q-pass 1))
-        (begin
-          (set! mod-q-fail (+ mod-q-fail 1))
-          (append!
-            mod-q-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-(define
-  mod-q-rules
-  (list
-    (mod/mk-rule
-      "quorum-hide"
-      :hide (list (list :reporters-at-least 2)))
-    (mod/mk-rule "default-keep" :keep (list))))
-
-;; ── two distinct reporters meet quorum ──
-
-(define
-  mod-q-two
-  (list
-    (mod/mk-report "r1" "alice" "bob" "off-topic")
-    (mod/mk-report "r2" "carol" "bob" "off-topic")))
-
-(mod-q-test!
-  "two distinct reporters → hide"
-  (get (mod/decide-quorum (first mod-q-two) mod-q-two mod-q-rules) :action)
-  "hide")
-(mod-q-test!
-  "quorum decision names the rule"
-  (get (mod/decide-quorum (first mod-q-two) mod-q-two mod-q-rules) :rule)
-  "quorum-hide")
-(mod-q-test!
-  "quorum decision tagged strategy"
-  (get (mod/decide-quorum (first mod-q-two) mod-q-two mod-q-rules) :strategy)
-  "quorum")
-
-;; ── single reporter does not meet quorum ──
-
-(define mod-q-one (list (mod/mk-report "r1" "alice" "bob" "off-topic")))
-(mod-q-test!
-  "one reporter → keep (below quorum)"
-  (get (mod/decide-quorum (first mod-q-one) mod-q-one mod-q-rules) :action)
-  "keep")
-
-;; ── anti-brigade: one user filing many reports does NOT meet quorum ──
-
-(define
-  mod-q-brigade
-  (list
-    (mod/mk-report "r1" "alice" "bob" "off-topic")
-    (mod/mk-report "r2" "alice" "bob" "off-topic")
-    (mod/mk-report "r3" "alice" "bob" "off-topic")))
-
-(mod-q-test!
-  "three reports, one reporter → keep (quorum counts distinct)"
-  (get
-    (mod/decide-quorum (first mod-q-brigade) mod-q-brigade mod-q-rules)
-    :action)
-  "keep")
-
-;; contrast: the count rule WOULD fire on the same brigade (3 reports ≥ 3) —
-;; quorum is strictly stronger against single-actor brigading
-(mod-q-test!
-  "count rule fires on the brigade (distinct from quorum)"
-  (get
-    (mod/decide-report (first mod-q-brigade) mod-q-brigade mod/default-rules)
-    :action)
-  "escalate")
-
-;; ── three distinct reporters ──
-
-(define
-  mod-q-three
-  (list
-    (mod/mk-report "r1" "alice" "bob" "off-topic")
-    (mod/mk-report "r2" "carol" "bob" "off-topic")
-    (mod/mk-report "r3" "dave" "bob" "off-topic")))
-
-(mod-q-test!
-  "three distinct reporters → hide"
-  (get
-    (mod/decide-quorum (first mod-q-three) mod-q-three mod-q-rules)
-    :action)
-  "hide")
-(mod-q-test!
-  "quorum proof goal solved"
-  (get
-    (first
-      (get
-        (get
-          (mod/decide-quorum (first mod-q-three) mod-q-three mod-q-rules)
-          :proof)
-        :goals))
-    :solved)
-  true)
-
-;; ── cond->goal compiles :reporters-at-least ──
-
-(mod-q-test!
-  "cond->goal :reporters-at-least"
-  (mod/cond->goal (list :reporters-at-least 2) "Id")
-  "report(Id, _, Sr), setof(Br, report(_, Br, Sr), Bsr), length(Bsr, Nr), Nr >= 2")
-
-(define mod-quorum-tests-run! (fn () {:failures mod-q-failures :total mod-q-count :passed mod-q-pass :failed mod-q-fail}))

lib/mod/tests/severity.sx

@@ -1,120 +0,0 @@
-;; lib/mod/tests/severity.sx — Ext 6: strictest-wins decision strategy.
-
-(define mod-sev-count 0)
-(define mod-sev-pass 0)
-(define mod-sev-fail 0)
-(define mod-sev-failures (list))
-
-(define
-  mod-sev-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-sev-count (+ mod-sev-count 1))
-      (if
-        (= got expected)
-        (set! mod-sev-pass (+ mod-sev-pass 1))
-        (begin
-          (set! mod-sev-fail (+ mod-sev-fail 1))
-          (append!
-            mod-sev-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; ── severity ranking ──
-
-(mod-sev-test! "ban most severe" (mod/action-severity "ban") 4)
-(mod-sev-test!
-  "remove > hide"
-  (< (mod/action-severity "hide") (mod/action-severity "remove"))
-  true)
-(mod-sev-test! "keep least severe" (mod/action-severity "keep") 0)
-(mod-sev-test!
-  "escalate above keep"
-  (< (mod/action-severity "keep") (mod/action-severity "escalate"))
-  true)
-
-;; ── strictest agrees with default-rules on simple cases ──
-
-(define mod-sev-spam (mod/mk-report "r1" "a" "b" "this is spam"))
-(mod-sev-test!
-  "strictest spam → hide"
-  (get
-    (mod/decide-strictest mod-sev-spam (list mod-sev-spam) mod/default-rules)
-    :action)
-  "hide")
-(define mod-sev-clean (mod/mk-report "r2" "a" "b" "a fine post"))
-(mod-sev-test!
-  "strictest clean → keep"
-  (get
-    (mod/decide-strictest
-      mod-sev-clean
-      (list mod-sev-clean)
-      mod/default-rules)
-    :action)
-  "keep")
-(mod-sev-test!
-  "decision tagged strategy strictest"
-  (get
-    (mod/decide-strictest mod-sev-spam (list mod-sev-spam) mod/default-rules)
-    :strategy)
-  "strictest")
-
-;; ── strictest diverges from first-match when order ≠ severity ──
-
-(define
-  mod-sev-rules
-  (list
-    (mod/mk-rule
-      "early-escalate"
-      :escalate (list (list :count-at-least 1)))
-    (mod/mk-rule "spam-remove" :remove (list (list :classification "spam")))
-    (mod/mk-rule "default-keep" :keep (list))))
-
-(define mod-sev-r (mod/mk-report "r3" "a" "b" "this is spam"))
-
-(mod-sev-test!
-  "first-match picks earliest rule (escalate)"
-  (get (mod/decide-report mod-sev-r (list mod-sev-r) mod-sev-rules) :action)
-  "escalate")
-(mod-sev-test!
-  "strictest picks harshest action (remove)"
-  (get
-    (mod/decide-strictest mod-sev-r (list mod-sev-r) mod-sev-rules)
-    :action)
-  "remove")
-(mod-sev-test!
-  "strictest names the harshest rule"
-  (get (mod/decide-strictest mod-sev-r (list mod-sev-r) mod-sev-rules) :rule)
-  "spam-remove")
-(mod-sev-test!
-  "strictest carries proof goals"
-  (len
-    (get
-      (get
-        (mod/decide-strictest mod-sev-r (list mod-sev-r) mod-sev-rules)
-        :proof)
-      :goals))
-  1)
-
-;; ── strictest among three matches (spam + repeated) ──
-
-(define mod-sev-rep (mod/mk-report "r4" "a" "b" "buy now spam"))
-(define mod-sev-reps (list mod-sev-rep mod-sev-rep mod-sev-rep))
-(mod-sev-test!
-  "strictest among hide+escalate+keep → hide (default rules)"
-  (get
-    (mod/decide-strictest mod-sev-rep mod-sev-reps mod/default-rules)
-    :action)
-  "hide")
-
-;; ── strictest-sol helper ──
-
-(mod-sev-test!
-  "strictest-sol picks max severity"
-  (dict-get
-    (mod/strictest-sol (list {:Action "keep" :Rule "k"} {:Action "remove" :Rule "r"} {:Action "hide" :Rule "h"}))
-    "Action")
-  "remove")
-(mod-sev-test! "strictest-sol nil for empty" (mod/strictest-sol (list)) nil)
-
-(define mod-severity-tests-run! (fn () {:failures mod-sev-failures :total mod-sev-count :passed mod-sev-pass :failed mod-sev-fail}))

lib/mod/tests/sla.sx

@@ -1,108 +0,0 @@
-;; lib/mod/tests/sla.sx — Ext 13: SLA sweep over pending lifecycle cases.
-
-(define mod-sla-count 0)
-(define mod-sla-pass 0)
-(define mod-sla-fail 0)
-(define mod-sla-failures (list))
-
-(define
-  mod-sla-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-sla-count (+ mod-sla-count 1))
-      (if
-        (= got expected)
-        (set! mod-sla-pass (+ mod-sla-pass 1))
-        (begin
-          (set! mod-sla-fail (+ mod-sla-fail 1))
-          (append!
-            mod-sla-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; ── pending-state? ──
-
-(mod-sla-test! "open is pending" (mod/pending-state? "open") true)
-(mod-sla-test! "triaged is pending" (mod/pending-state? "triaged") true)
-(mod-sla-test! "appealed is pending" (mod/pending-state? "appealed") true)
-(mod-sla-test! "decided is not pending" (mod/pending-state? "decided") false)
-(mod-sla-test! "final is not pending" (mod/pending-state? "final") false)
-
-;; build cases in known states
-(define mod-sla-spam (mod/mk-report "r1" "u" "bob" "this is spam"))
-(define mod-sla-spam-reports (list mod-sla-spam))
-(define
-  mod-sla-triaged
-  (mod/case-triage
-    (mod/mk-case mod-sla-spam)
-    mod-sla-spam-reports
-    mod/default-rules))
-(define mod-sla-decided (mod/case-resolve mod-sla-triaged))
-(define mod-sla-open (mod/mk-case (mod/mk-report "r2" "u" "eve" "hello")))
-
-;; ── overdue? ──
-
-(define mod-sla-tc-old (mod/mk-timed-case mod-sla-triaged 0))
-(define mod-sla-tc-fresh (mod/mk-timed-case mod-sla-triaged 90))
-(define mod-sla-tc-done (mod/mk-timed-case mod-sla-decided 0))
-
-(mod-sla-test!
-  "old triaged case is overdue"
-  (mod/overdue? mod-sla-tc-old 100 50)
-  true)
-(mod-sla-test!
-  "fresh triaged case not overdue"
-  (mod/overdue? mod-sla-tc-fresh 100 50)
-  false)
-(mod-sla-test!
-  "decided case never overdue"
-  (mod/overdue? mod-sla-tc-done 100 50)
-  false)
-(mod-sla-test!
-  "age computes elapsed ticks"
-  (mod/age mod-sla-tc-old 100)
-  100)
-(mod-sla-test!
-  "boundary: exactly at deadline not overdue"
-  (mod/overdue?
-    (mod/mk-timed-case mod-sla-triaged 50)
-    100
-    50)
-  false)
-(mod-sla-test!
-  "boundary: one past deadline overdue"
-  (mod/overdue?
-    (mod/mk-timed-case mod-sla-triaged 49)
-    100
-    50)
-  true)
-
-;; ── sweep over a mixed queue ──
-
-(define
-  mod-sla-queue
-  (list
-    (mod/mk-timed-case mod-sla-triaged 0)
-    (mod/mk-timed-case mod-sla-decided 0)
-    (mod/mk-timed-case mod-sla-open 90)))      ;; r2, pending, age 10 → not
-
-(mod-sla-test!
-  "sweep finds only the overdue pending case"
-  (mod/sla-sweep mod-sla-queue 100 50)
-  (list "r1"))
-(mod-sla-test!
-  "overdue-count agrees"
-  (mod/overdue-count mod-sla-queue 100 50)
-  1)
-
-;; tighten deadline so the young open case also breaches
-(mod-sla-test!
-  "tighter deadline catches the open case too"
-  (mod/overdue-count mod-sla-queue 100 5)
-  2)
-(mod-sla-test!
-  "empty queue → no breaches"
-  (mod/sla-sweep (list) 100 50)
-  (list))
-
-(define mod-sla-tests-run! (fn () {:failures mod-sla-failures :total mod-sla-count :passed mod-sla-pass :failed mod-sla-fail}))

lib/mod/tests/temporal.sx

@@ -1,156 +0,0 @@
-;; lib/mod/tests/temporal.sx — Ext 12: burst detection over a time window.
-
-(define mod-tm-count 0)
-(define mod-tm-pass 0)
-(define mod-tm-fail 0)
-(define mod-tm-failures (list))
-
-(define
-  mod-tm-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-tm-count (+ mod-tm-count 1))
-      (if
-        (= got expected)
-        (set! mod-tm-pass (+ mod-tm-pass 1))
-        (begin
-          (set! mod-tm-fail (+ mod-tm-fail 1))
-          (append!
-            mod-tm-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-(define
-  mod-tm-at
-  (fn (id about t) (mod/with-at (mod/mk-report id "u" about "off-topic") t)))
-
-(define
-  mod-tm-rules
-  (list
-    (mod/mk-rule "burst-hide" :hide (list (list :burst-at-least 3)))
-    (mod/mk-rule "default-keep" :keep (list))))
-
-;; ── window-count helper ──
-
-(define
-  mod-tm-burst
-  (list
-    (mod-tm-at "r1" "bob" 10)
-    (mod-tm-at "r2" "bob" 11)
-    (mod-tm-at "r3" "bob" 12)))
-(define
-  mod-tm-slow
-  (list
-    (mod-tm-at "r1" "bob" 1)
-    (mod-tm-at "r2" "bob" 2)
-    (mod-tm-at "r3" "bob" 12)))
-
-(mod-tm-test!
-  "window-count: all 3 within window"
-  (mod/window-count "bob" mod-tm-burst 12 5)
-  3)
-(mod-tm-test!
-  "window-count: only 1 within window"
-  (mod/window-count "bob" mod-tm-slow 12 5)
-  1)
-(mod-tm-test!
-  "window-count: subject filter"
-  (mod/window-count "eve" mod-tm-burst 12 5)
-  0)
-
-;; ── burst fires; slow accumulation does not ──
-
-(mod-tm-test!
-  "burst (3 in window) → hide"
-  (get
-    (mod/decide-temporal
-      (first mod-tm-burst)
-      mod-tm-burst
-      mod-tm-rules
-      12
-      5)
-    :action)
-  "hide")
-(mod-tm-test!
-  "slow accumulation (1 in window) → keep"
-  (get
-    (mod/decide-temporal
-      (first mod-tm-slow)
-      mod-tm-slow
-      mod-tm-rules
-      12
-      5)
-    :action)
-  "keep")
-
-;; ── contrast: the plain count rule fires on BOTH (3 total reports) ──
-(mod-tm-test!
-  "count rule fires on slow case (distinct from burst)"
-  (get
-    (mod/decide-report (first mod-tm-slow) mod-tm-slow mod/default-rules)
-    :action)
-  "escalate")
-
-;; ── decision shape ──
-
-(define
-  mod-tm-d
-  (mod/decide-temporal
-    (first mod-tm-burst)
-    mod-tm-burst
-    mod-tm-rules
-    12
-    5))
-(mod-tm-test! "burst decision rule" (get mod-tm-d :rule) "burst-hide")
-(mod-tm-test!
-  "burst decision tagged strategy"
-  (get mod-tm-d :strategy)
-  "temporal")
-(mod-tm-test!
-  "burst recorded in proof"
-  (get (get mod-tm-d :proof) :burst)
-  3)
-(mod-tm-test!
-  "burst proof goal solved"
-  (get (first (get (get mod-tm-d :proof) :goals)) :solved)
-  true)
-
-;; ── window boundary is inclusive ──
-
-(define
-  mod-tm-edge
-  (list
-    (mod-tm-at "r1" "bob" 7)
-    (mod-tm-at "r2" "bob" 8)
-    (mod-tm-at "r3" "bob" 9)))
-(mod-tm-test!
-  "window boundary inclusive (now-window = at)"
-  (mod/window-count "bob" mod-tm-edge 12 5)
-  3)
-
-;; ── schema :at round-trips and survives evidence attach ──
-
-(mod-tm-test!
-  "report-at reads timestamp"
-  (mod/report-at (mod-tm-at "r1" "bob" 42))
-  42)
-(mod-tm-test!
-  "default report-at is 0"
-  (mod/report-at (mod/mk-report "r1" "a" "b" "x"))
-  0)
-(mod-tm-test!
-  "attach-evidence preserves :at"
-  (mod/report-at
-    (mod/attach-evidence
-      (mod-tm-at "r1" "bob" 42)
-      (mod/mk-evidence "k" "v")))
-  42)
-
-;; ── cond->goal :burst-at-least ──
-
-(mod-tm-test!
-  "cond->goal :burst-at-least"
-  (mod/cond->goal (list :burst-at-least 3) "Id")
-  "report(Id, _, Sb), burst_count(Sb, Nb), Nb >= 3")
-
-(define mod-temporal-tests-run! (fn () {:failures mod-tm-failures :total mod-tm-count :passed mod-tm-pass :failed mod-tm-fail}))

lib/mod/tests/trace.sx

@@ -1,116 +0,0 @@
-;; lib/mod/tests/trace.sx — Ext 9: policy dry-run diagnostics.
-
-(define mod-tr-count 0)
-(define mod-tr-pass 0)
-(define mod-tr-fail 0)
-(define mod-tr-failures (list))
-
-(define
-  mod-tr-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-tr-count (+ mod-tr-count 1))
-      (if
-        (= got expected)
-        (set! mod-tr-pass (+ mod-tr-pass 1))
-        (begin
-          (set! mod-tr-fail (+ mod-tr-fail 1))
-          (append!
-            mod-tr-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-(define
-  mod-tr-find
-  (fn
-    (trace nm)
-    (reduce (fn (acc t) (if (= (get t :rule) nm) t acc)) nil trace)))
-
-;; ── trace a spam report against the default rules ──
-
-(define mod-tr-spam (mod/mk-report "r1" "alice" "bob" "this is spam"))
-(define
-  mod-tr-t
-  (mod/trace-rules mod-tr-spam (list mod-tr-spam) mod/default-rules))
-
-(mod-tr-test! "trace covers every rule" (len mod-tr-t) 6)
-(mod-tr-test!
-  "spam-hide fires"
-  (get (mod-tr-find mod-tr-t "spam-hide") :proved)
-  true)
-(mod-tr-test!
-  "default-keep always fires"
-  (get (mod-tr-find mod-tr-t "default-keep") :proved)
-  true)
-(mod-tr-test!
-  "reviewer-remove does not fire (no evidence)"
-  (get (mod-tr-find mod-tr-t "reviewer-remove") :proved)
-  false)
-(mod-tr-test!
-  "exonerated-keep does not fire"
-  (get (mod-tr-find mod-tr-t "exonerated-keep") :proved)
-  false)
-(mod-tr-test!
-  "abuse-remove does not fire"
-  (get (mod-tr-find mod-tr-t "abuse-remove") :proved)
-  false)
-
-;; ── winner matches the engine ──
-
-(mod-tr-test!
-  "first-proved is spam-hide"
-  (get (mod/first-proved mod-tr-t) :rule)
-  "spam-hide")
-(mod-tr-test!
-  "winner action matches decide-report"
-  (get (mod/first-proved mod-tr-t) :action)
-  (get
-    (mod/decide-report mod-tr-spam (list mod-tr-spam) mod/default-rules)
-    :action))
-
-;; ── an unproved rule shows which goal failed ──
-
-(define
-  mod-tr-rev-goals
-  (get (mod-tr-find mod-tr-t "reviewer-remove") :goals))
-(mod-tr-test!
-  "reviewer-remove goal is unsolved"
-  (get (first mod-tr-rev-goals) :solved)
-  false)
-(define mod-tr-spam-goals (get (mod-tr-find mod-tr-t "spam-hide") :goals))
-(mod-tr-test!
-  "spam-hide goal is solved"
-  (get (first mod-tr-spam-goals) :solved)
-  true)
-
-;; ── proved-rules list + rendering ──
-
-(mod-tr-test!
-  "proved-rules lists fired rules in order"
-  (mod/proved-rules mod-tr-t)
-  (list "spam-hide" "default-keep"))
-(mod-tr-test!
-  "trace-report marks a firing rule"
-  (mod/str-contains? (mod/trace-report mod-tr-t) "[fires] spam-hide")
-  true)
-(mod-tr-test!
-  "trace-report marks a non-firing rule"
-  (mod/str-contains? (mod/trace-report mod-tr-t) "[  -  ] reviewer-remove")
-  true)
-
-;; ── clean report: only default-keep fires ──
-
-(define mod-tr-clean (mod/mk-report "r2" "a" "b" "a fine post"))
-(define
-  mod-tr-tc
-  (mod/trace-rules mod-tr-clean (list mod-tr-clean) mod/default-rules))
-(mod-tr-test!
-  "clean report: only default-keep proves"
-  (mod/proved-rules mod-tr-tc)
-  (list "default-keep"))
-(mod-tr-test!
-  "clean report winner is default-keep"
-  (get (mod/first-proved mod-tr-tc) :rule)
-  "default-keep")
-
-(define mod-trace-tests-run! (fn () {:failures mod-tr-failures :total mod-tr-count :passed mod-tr-pass :failed mod-tr-fail}))

lib/mod/tests/whatif.sx

@@ -1,117 +0,0 @@
-;; lib/mod/tests/whatif.sx — Ext 10: policy what-if / impact analysis.
-
-(define mod-wi-count 0)
-(define mod-wi-pass 0)
-(define mod-wi-fail 0)
-(define mod-wi-failures (list))
-
-(define
-  mod-wi-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-wi-count (+ mod-wi-count 1))
-      (if
-        (= got expected)
-        (set! mod-wi-pass (+ mod-wi-pass 1))
-        (begin
-          (set! mod-wi-fail (+ mod-wi-fail 1))
-          (append!
-            mod-wi-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; rules-b is the default policy with spam-hide removed: spam now falls through
-;; to default-keep. A spam report flips hide → keep; everything else is unchanged.
-(define mod-wi-rules-a mod/default-rules)
-(define
-  mod-wi-rules-b
-  (list
-    (mod/mk-rule
-      "reviewer-remove"
-      :remove (list (list :evidence "confirmed-abuse")))
-    (mod/mk-rule
-      "abuse-remove"
-      :remove (list (list :classification "abuse")))
-    (mod/mk-rule
-      "repeated-escalate"
-      :escalate (list (list :count-at-least 3)))
-    (mod/mk-rule "default-keep" :keep (list))))
-
-(define mod-wi-spam (mod/mk-report "r1" "a" "bob" "this is spam"))
-(define mod-wi-abuse (mod/mk-report "r2" "a" "carol" "harassment here"))
-(define mod-wi-clean (mod/mk-report "r3" "a" "dave" "a fine post"))
-
-;; ── single-report diff ──
-
-(define
-  mod-wi-d
-  (mod/decision-diff
-    mod-wi-spam
-    (list mod-wi-spam)
-    mod-wi-rules-a
-    mod-wi-rules-b))
-(mod-wi-test! "spam before = hide" (get mod-wi-d :before) "hide")
-(mod-wi-test! "spam after = keep" (get mod-wi-d :after) "keep")
-(mod-wi-test! "spam decision flips" (get mod-wi-d :changed) true)
-(mod-wi-test! "diff carries report id" (get mod-wi-d :report-id) "r1")
-
-(define
-  mod-wi-da
-  (mod/decision-diff
-    mod-wi-abuse
-    (list mod-wi-abuse)
-    mod-wi-rules-a
-    mod-wi-rules-b))
-(mod-wi-test! "abuse unchanged (remove both)" (get mod-wi-da :changed) false)
-(mod-wi-test! "abuse stays remove" (get mod-wi-da :after) "remove")
-
-(define
-  mod-wi-dc
-  (mod/decision-diff
-    mod-wi-clean
-    (list mod-wi-clean)
-    mod-wi-rules-a
-    mod-wi-rules-b))
-(mod-wi-test! "clean unchanged (keep both)" (get mod-wi-dc :changed) false)
-
-;; ── batch impact ──
-
-(define mod-wi-batch (list mod-wi-spam mod-wi-abuse mod-wi-clean))
-(define
-  mod-wi-impact
-  (mod/policy-impact mod-wi-batch mod-wi-rules-a mod-wi-rules-b))
-
-(mod-wi-test!
-  "impact lists only changed reports"
-  (len mod-wi-impact)
-  1)
-(mod-wi-test!
-  "impacted report is the spam one"
-  (get (first mod-wi-impact) :report-id)
-  "r1")
-(mod-wi-test!
-  "impact-count agrees"
-  (mod/impact-count mod-wi-batch mod-wi-rules-a mod-wi-rules-b)
-  1)
-
-;; ── identical rule sets → no impact ──
-
-(mod-wi-test!
-  "same rules → zero impact"
-  (mod/impact-count mod-wi-batch mod-wi-rules-a mod-wi-rules-a)
-  0)
-(mod-wi-test!
-  "same rules → empty report"
-  (mod/impact-report mod-wi-batch mod-wi-rules-a mod-wi-rules-a)
-  "No decisions change.")
-
-;; ── rendering ──
-
-(mod-wi-test!
-  "impact-report renders the flip"
-  (mod/str-contains?
-    (mod/impact-report mod-wi-batch mod-wi-rules-a mod-wi-rules-b)
-    "r1: hide → keep")
-  true)
-
-(define mod-whatif-tests-run! (fn () {:failures mod-wi-failures :total mod-wi-count :passed mod-wi-pass :failed mod-wi-fail}))

lib/mod/tests/wire.sx

@@ -1,96 +0,0 @@
-;; lib/mod/tests/wire.sx — Ext 14: decision wire format + federated transport.
-
-(define mod-w-count 0)
-(define mod-w-pass 0)
-(define mod-w-fail 0)
-(define mod-w-failures (list))
-
-(define
-  mod-w-test!
-  (fn
-    (name got expected)
-    (begin
-      (set! mod-w-count (+ mod-w-count 1))
-      (if
-        (= got expected)
-        (set! mod-w-pass (+ mod-w-pass 1))
-        (begin
-          (set! mod-w-fail (+ mod-w-fail 1))
-          (append!
-            mod-w-failures
-            (str name "\n    expected: " expected "\n    got:      " got)))))))
-
-;; ── split-char ──
-
-(mod-w-test! "split on pipe" (mod/split-char "a|b|c" "|") (list "a" "b" "c"))
-(mod-w-test! "split single field" (mod/split-char "abc" "|") (list "abc"))
-(mod-w-test!
-  "split four fields"
-  (len (mod/split-char "MOD1|r1|hide|spam-hide" "|"))
-  4)
-
-;; ── serialize ──
-
-(define
-  mod-w-dec
-  (mod/decide-report
-    (mod/mk-report "r1" "a" "bob" "this is spam")
-    (list (mod/mk-report "r1" "a" "bob" "this is spam"))
-    mod/default-rules))
-(define mod-w-line (mod/decision->wire mod-w-dec))
-
-(mod-w-test!
-  "wire is versioned + delimited"
-  mod-w-line
-  "MOD1|r1|hide|spam-hide")
-(mod-w-test!
-  "wire-valid? accepts well-formed"
-  (mod/wire-valid? mod-w-line)
-  true)
-(mod-w-test!
-  "wire-valid? rejects junk"
-  (mod/wire-valid? "not a wire line")
-  false)
-(mod-w-test!
-  "wire-valid? rejects wrong version"
-  (mod/wire-valid? "MOD9|r1|hide|x")
-  false)
-
-;; ── round-trip ──
-
-(define mod-w-back (mod/wire->decision mod-w-line))
-(mod-w-test! "round-trip report-id" (get mod-w-back :report-id) "r1")
-(mod-w-test! "round-trip action" (get mod-w-back :action) "hide")
-(mod-w-test! "round-trip rule" (get mod-w-back :rule) "spam-hide")
-(mod-w-test! "round-trip tags :wire" (get mod-w-back :wire) true)
-(mod-w-test! "malformed → nil" (mod/wire->decision "garbage") nil)
-
-;; ── full federated transport: serialize → wire → deserialize → trust-gate ──
-
-(mod/fed-reset!)
-(define mod-w-peer-dec (mod/wire->decision mod-w-line))
-
-;; untrusted peer: decision is advisory, not applied
-(define mod-w-recv1 (mod/fed-receive-decision "peerX" mod-w-peer-dec))
-(mod-w-test!
-  "wired decision from untrusted peer → advisory"
-  (get mod-w-recv1 :applied)
-  false)
-(mod-w-test!
-  "untrusted wired decision not applied locally"
-  (mod/fed-applied-action "r1")
-  nil)
-
-;; trusted peer: decision binds locally
-(mod/grant-trust "peerY" :mod)
-(define mod-w-recv2 (mod/fed-receive-decision "peerY" mod-w-peer-dec))
-(mod-w-test!
-  "wired decision from trusted peer → applied"
-  (get mod-w-recv2 :applied)
-  true)
-(mod-w-test!
-  "trusted wired decision binds locally"
-  (get (mod/fed-applied-action "r1") :action)
-  "hide")
-
-(define mod-wire-tests-run! (fn () {:failures mod-w-failures :total mod-w-count :passed mod-w-pass :failed mod-w-fail}))

lib/mod/trace.sx

@@ -1,56 +0,0 @@
-;; lib/mod/trace.sx — policy dry-run diagnostics.
-;;
-;; decide-report returns the winning rule; a policy author debugging "why didn't
-;; my rule fire?" needs the whole picture. mod/trace-rules evaluates a report
-;; against every rule and reports each rule's proved/unproved status plus its
-;; goal-by-goal derivation — so an unproved rule shows exactly which goal failed.
-;; The winner is the first proved rule (same precedence as the engine).
-
-(define
-  mod/trace-rules
-  (fn
-    (r reports rules)
-    (let
-      ((count (mod/report-count (mod/report-about r) reports))
-        (id (mod/report-id r)))
-      (let
-        ((db (pl-load (mod/build-program r count rules))))
-        (let
-          ((proved-names (map (fn (s) (dict-get s "Rule")) (pl-query-all db (str "policy_action(" id ", _, Rule)")))))
-          (map
-            (fn (rule) (let ((nm (mod/rule-name rule))) {:proved (mod/member? nm proved-names) :goals (mod/proof-goals db id (mod/rule-when rule)) :action (mod/rule-action rule) :rule nm}))
-            rules))))))
-
-(define
-  mod/first-proved
-  (fn
-    (trace)
-    (reduce
-      (fn (acc t) (if (nil? acc) (if (get t :proved) t acc) acc))
-      nil
-      trace)))
-
-(define
-  mod/proved-rules
-  (fn
-    (trace)
-    (reduce
-      (fn
-        (acc t)
-        (if (get t :proved) (append acc (list (get t :rule))) acc))
-      (list)
-      trace)))
-
-(define
-  mod/trace-row
-  (fn
-    (t)
-    (str
-      (if (get t :proved) "[fires] " "[  -  ] ")
-      (get t :rule)
-      " → "
-      (get t :action))))
-
-(define
-  mod/trace-report
-  (fn (trace) (mod/join-with "\n" (map mod/trace-row trace))))

lib/mod/whatif.sx

@@ -1,56 +0,0 @@
-;; lib/mod/whatif.sx — policy what-if / impact analysis.
-;;
-;; Before shipping a policy change, a moderation team needs to know which past or
-;; pending reports would decide differently. mod/decision-diff compares one
-;; report's action under two rule sets; mod/policy-impact runs a whole batch and
-;; returns only the reports whose decision flips. Pure SX over decide-report.
-
-(define
-  mod/decision-diff
-  (fn
-    (r reports rules-a rules-b)
-    (let
-      ((a (get (mod/decide-report r reports rules-a) :action))
-        (b (get (mod/decide-report r reports rules-b) :action)))
-      {:after b :changed (if (= a b) false true) :report-id (mod/report-id r) :before a})))
-
-(define
-  mod/policy-impact
-  (fn
-    (reports rules-a rules-b)
-    (reduce
-      (fn
-        (acc r)
-        (let
-          ((d (mod/decision-diff r reports rules-a rules-b)))
-          (if (get d :changed) (append acc (list d)) acc)))
-      (list)
-      reports)))
-
-(define
-  mod/impact-count
-  (fn
-    (reports rules-a rules-b)
-    (len (mod/policy-impact reports rules-a rules-b))))
-
-(define
-  mod/impact-report
-  (fn
-    (reports rules-a rules-b)
-    (let
-      ((changed (mod/policy-impact reports rules-a rules-b)))
-      (if
-        (empty? changed)
-        "No decisions change."
-        (mod/join-with
-          "\n"
-          (map
-            (fn
-              (d)
-              (str
-                (get d :report-id)
-                ": "
-                (get d :before)
-                " → "
-                (get d :after)))
-            changed))))))

lib/mod/wire.sx

@@ -1,55 +0,0 @@
-;; lib/mod/wire.sx — portable decision wire format for federation transport.
-;;
-;; fed.sx shares decisions as in-memory dicts and leaves mod/fed-send! as the
-;; transport seam. This is the bytes that cross it: a versioned, pipe-delimited
-;; line encoding the verdict a peer needs (report id, action, rule) — enough to
-;; trust-gate and apply/advise, without shipping the whole proof tree. The
-;; loaded env has no string split, so split is built over slice/len.
-
-(define
-  mod/split-loop
-  (fn
-    (s ch n start pos acc)
-    (if
-      (= pos n)
-      (append acc (list (slice s start n)))
-      (if
-        (= (slice s pos (+ pos 1)) ch)
-        (mod/split-loop
-          s
-          ch
-          n
-          (+ pos 1)
-          (+ pos 1)
-          (append acc (list (slice s start pos))))
-        (mod/split-loop s ch n start (+ pos 1) acc)))))
-
-(define
-  mod/split-char
-  (fn (s ch) (mod/split-loop s ch (len s) 0 0 (list))))
-
-(define
-  mod/decision->wire
-  (fn
-    (d)
-    (str "MOD1|" (get d :report-id) "|" (get d :action) "|" (get d :rule))))
-
-(define
-  mod/wire-valid?
-  (fn
-    (w)
-    (let
-      ((parts (mod/split-char w "|")))
-      (if
-        (= (len parts) 4)
-        (= (nth parts 0) "MOD1")
-        false))))
-
-(define
-  mod/wire->decision
-  (fn
-    (w)
-    (if
-      (mod/wire-valid? w)
-      (let ((parts (mod/split-char w "|"))) {:action (nth parts 2) :wire true :rule (nth parts 3) :report-id (nth parts 1)})
-      nil)))

plans/abstractions.md

@@ -0,0 +1,639 @@
+# Abstraction Radar — backlog
+
+Maintained by the read-only `radar` loop (see `plans/agent-briefings/radar-loop.md`).
+Detection only — implementation is a separate, coordinated step owned by the
+relevant subsystem loop, never by radar.
+
+**AHA gate to reach _Proposed_:** ≥3 real consumers · all past Phase 2 & API-stable ·
+structurally identical (file:line evidence) · a natural home (usually NOT lib/guest).
+Anything short → _Watching_ (what's missing) or _Rejected_ (why).
+
+---
+
+## Last scan
+
+- **Date:** 2026-06-07 (radar loop, pass 38)
+- **Pass 38 — migration plan DRAFTED (planning loop worklist complete).** All 5 specs
+  written under `loops/migration:plans/migration/` (host-readiness, strangler-shadow-
+  harness, slice-01-blog, data-migration, slice-sequencing); loop added a 6th revealed
+  thread `open-questions.md` (digest for humans) then is end-of-worklist. **Decision point
+  for the operator: review the plan + decide whether to start an IMPLEMENTATION loop**
+  (first target per the plan: `lib/host` Phase 1 + multi-`Set-Cookie` fix → slice-01-blog
+  1a). Branch `loops/migration` is local/un-pushed (per operator's no-push preference).
+  No new radar candidate; A1 at 13; fed-sx still on deadlock.
+- **Date:** 2026-06-07 (radar loop, pass 37)
+- **Pass 37 — migration plan 4/5 specs done.** Long-pole shipped: `data-migration.md`
+  (Postgres → persist via **genesis-import** — seed each stream with current DB state as
+  initial events). Only `slice-sequencing.md` left; loop self-pacing fine. No new radar
+  candidate; events (iCal import) + content (sanitize, 799/799) incremental; A1 at 13.
+- **Date:** 2026-06-07 (radar loop, pass 36)
+- **Pass 36 — migration planning loop healthy + productive.** Self-pacing restored (now
+  schedules its own ~20min wake-ups). Shipped 2 more specs (3/5 threads): strangler-shadow-
+  harness (Caddy handle-per-route + offline-replay shadow-diff at the `content/blocks`
+  facade) and slice-01-blog (GET /<slug>/; **found blog already has `Post.sx_content` +
+  lexical→SX pipeline** — a real head-start). data-migration + slice-sequencing pending.
+  No new radar candidate; A1 steady at 13; fed-sx still on deadlock.
+- **Date:** 2026-06-07 (radar loop, pass 35)
+- **Pass 35 — quiet for findings; ops note.** The migration PLANNING loop had completed
+  host-readiness and **stalled idle ~1hr** (self-paced `/loop` didn't re-fire after one
+  iteration). Nudged it to continue its worklist (now on strangler-shadow-harness) +
+  schedule its own next wake-up. No new radar candidate; events/content incremental;
+  A1 steady at 13; fed-sx still on the deadlock reproducer.
+- **Date:** 2026-06-07 (radar loop, pass 34)
+- **Pass 34 — quiet, no new finding.** Minimal churn: migration planning loop still on
+  host-readiness (next thread pending, self-paced); maude scoreboard refresh; fed-sx
+  grinding the fed-prims deadlock; A1 adopters steady at 13. Nothing new to discover.
+- **Date:** 2026-06-07 (radar loop, pass 33)
+- **Pass 33 — host-layer story clarified (refines the migration strategy).** `dream` =
+  **Dream-on-SX**: OCaml's Dream web framework on the SX CEK, and the project owner's
+  **confirmed decision to move rose-ash OFF Quart onto Dream** as the ergonomic HTTP front
+  door over the native SX server (router/session/middleware/cors/csrf/auth/ws/html/json —
+  16 modules). So the host layer is: **host-on-sx native server (Phases 1-3, carries it
+  now) → Dream-on-SX framework front door (gated on ocaml-on-sx Phases 1-5) + host-persist
+  (done) + fed-sx (AP transport).** The migration PLANNING loop (new, tmux `migration`,
+  commit-only) is now the owner of refining this — it already shipped `host-readiness.md`
+  pinning the near-term gate to **`lib/host` (unbuilt) + a multi-`Set-Cookie` primitive
+  fix** (`sx_server.ml:735`). NOTE: `plans/rose-ash-on-sx-migration.md` under-specified the
+  framework layer (said "host-on-sx HTTP host"); the Dream-over-Quart decision + the
+  native→Dream sequence is the correction — the planning loop will fold it into its specs.
+  `maude` at Phase 5 (rewriting-logic substrate). Radar tracks; planning loop details.
+- **Date:** 2026-06-07 (radar loop, pass 32)
+- **Pass 32 — A1 DONE.** `loops/conformance` merged to architecture (`db76cc8c`); 13 adopters
+  now on the shared driver; radar spot-checked common-lisp = 487/487 green post-merge →
+  coordination flag CLEARED. A1 moved to a new **Done** section. New nascent subsystems
+  `dream` + `maude` (0 files), `fed-prims` resumed (mutex-deadlock fix). The idle
+  `a1-conformance` loop can be retired (worklist complete).
+- **Date:** 2026-06-07 (radar loop, pass 31)
+- **Pass 31 — A1 conformance loop WORKLIST COMPLETE.** tcl excluded (foreign `*.tcl`); final:
+  4 migrated (common-lisp/erlang/feed/go) + 5 excluded (forth/js/ocaml/smalltalk/tcl). A1 =
+  **12 on shared driver + 6 excluded**; only the parity-gated merge to architecture remains.
+  commerce shipped a refund saga on flow (2nd flow use) + finished Phase 5 → going quiescent.
+  relations building graph algos (all-paths) — still unconsumed (W9 unchanged).
+- **Date:** 2026-06-07 (radar loop, pass 30)
+- **Pass 30:** conformance loop near done — `ocaml` + `smalltalk` excluded (both foreign
+  `test.sh`/corpus runners, as predicted). Tally: 4 migrated, 4 excluded, **tcl only** left.
+  Next A1 milestone = the `loops/conformance`→architecture merge under adopter-parity. No
+  new candidate; relations/artdag steady (no new W9 delegation).
+- **Date:** 2026-06-07 (radar loop, pass 29)
+- **Pass 29:** conformance loop excluded `js` (test262 fixtures) → 4 migrated + 2 excluded,
+  3 remain (ocaml/smalltalk/tcl). New subsystems advancing fast: `relations` → Phase 4
+  federation, `artdag` → Phase 6 federation → both fold into W1 (now 7 federation modules,
+  theme-not-shape holds) and W9 (relations past Phase 2 but not yet consumed by anyone).
+- **Date:** 2026-06-07 (radar loop, pass 28)
+- **Pass 28 — fleet expanding again.** Conformance loop: `go` migrated 609/609; **`forth`
+  excluded** (foreign Forth corpus — classify-then-exclude working). 4 migrated +1 excluded
+  on the branch; js/ocaml/smalltalk/tcl remain. **2 new subsystems:** `relations` (Phase 1,
+  parent/child rel facts → new W9 nascent watch) and `artdag` (nascent, 0 files). `events`
+  MERGED to architecture (its persist+flow adoption now integrated — W4/W8 landed). Briefing
+  commit hints more incoming: `dream`, `host`, +5 language chisels.
+- **Date:** 2026-06-07 (radar loop, passes 26–27)
+- **Passes 26–27 (routine tracking):** conformance loop steady at ~1 migration/iteration —
+  erlang 761/761, then feed 189/189. A1 = 8 on architecture + 3 on the branch; 6 remain.
+  W4 still gated (host-persist adapter not landed); no new subsystem; app loops on
+  incremental domain work (commerce Phase 5 payment envelope, content/events/identity/fed-sx).
+  Nothing new to discover; merge-time adopter-parity flag still open.
+- **Date:** 2026-06-07 (radar loop, pass 25)
+- **Pass 25:** A1 → **8 adopters** (events via its own loop) + common-lisp 487/487 on the
+  conformance branch. The conformance loop **extended the shared `lib/guest` driver**
+  (per-suite counters/preloads) to do it → raised a **coordination flag in A1**: verify the
+  branch is non-regressive against all 8 adopters before merging to architecture. commerce
+  drafting Phase 5 provider-neutral payment envelope. No new candidate; A1 advancing fast.
+- **Date:** 2026-06-07 (radar loop, pass 24)
+- **Pass 24 — three real updates.** (1) **A1 → 7 adopters** (search migrated, counters mode
+  — corrects the earlier exclusion). (2) The dedicated `conformance` loop ran its 1st
+  iteration: refused to force-migrate common-lisp (parity gate worked) and surfaced a
+  **driver feature-gap** (per-suite counters + preloads) gating the complex multi-suite
+  candidates → A1 now splits simple-now vs gated-on-driver-enhancement. (3) **W8 commerce
+  is LIVE** ("order lifecycle as a durable flow-on-sx flow, Phase 3 done") → 2 live flow
+  consumers. events shipped TZ/DST; mod reverted its extraction note (declined on re-read).
+- **Date:** 2026-06-07 (radar loop, pass 23)
+- **Pass 23 — trigger fired (empty streak ends at 19–22).** commerce recorded a Phase 3
+  **flow-integration design** (order saga as a flow-on-sx flow, payment suspended until
+  webhook resume) → 2nd durable-flow consumer; **W8 broadened** from "delivery" to
+  "externally-resumed orchestration on lib/flow." events made its federation transport
+  **fed-sx-ready** (injected) → reinforces W1's 5/5 inject-fed-sx seam. acl left tmux
+  (now fully quiescent). host-persist adapter still not landed (W4 migration still gated).
+- **Empty-discovery streak: passes 19–22** (last verified pass 22). Fleet at steady state —
+  active loops (content CvRDT, events recurrence/reschedule, identity grant-mgmt, fed-sx
+  outbox internals) are building *inside* their domains, not cross-cutting infra. Census
+  exhausted (p17); all gates re-tested (W1 p18, W2 p19). No new candidate clears any gate.
+- **Radar is now trigger-driven.** The next substantive pass needs one of: **(a)** a new
+  subsystem worktree spawning (auto-joins scan), or **(b)** host-persist's durable adapter
+  landing → unblocks the W4 acl/mod→persist/log migration, or **(c)** a quiescent
+  subsystem (acl/mod/search/commerce, static ~9–16 passes) resuming. Polling ~hourly until
+  one fires; will tighten cadence then.
+- **Date:** 2026-06-07 (radar loop, pass 20)
+- **Pass 20 — honest empty pass.** 3 new census recurrences since p17 (normalize/index ×2,
+  query ×3) — all **name collisions** (same noun, domain-specific op), added to the table.
+  Recorded the meta-pattern: the fleet shares vocabulary, not structure. Most subsystems
+  quiescent (acl/mod/search/commerce static ~9-15 passes = API-stable); only events/
+  identity/content/fed-sx still committing domain features. No new gate-clearer.
+- **Date:** 2026-06-07 (radar loop, pass 19)
+- **Pass 19 — honest empty pass.** Scanned 10 active subsystems. content/index.sx is a
+  blog index/tag-cloud listing (presentation, not full-text search — no search reinvention)
+  and content/multi-doc indexing adds no per-viewer filter. **W2 re-tested: still 2**
+  (feed, search) — acl's `permit?`-like matches are its own authZ *engine* (the home),
+  not a downstream read filter. No new candidate cleared any gate.
+- **Date:** 2026-06-07 (radar loop, pass 18)
+- **Pass 18 — W1 gate re-test.** events shipped Phase 4 federation (5th consumer): a 5th
+  divergent merge (sorted agenda + `:origin` provenance), trust-gate = runtime list
+  membership (shares mod's mechanism, not acl's). Reinforces W1's "theme not shape" — but
+  the **inject-fed-sx-transport seam is now 5/5**, strengthening "all are fed-sx
+  consumers-in-waiting." Trust sub-pattern refined: mod+events (runtime set) vs acl (rule).
+- **Date:** 2026-06-07 (radar loop, pass 17)
+- **Pass 17 — filename census declared EXHAUSTED** (see the Census-status table above).
+  Examined the last unswept ≥2 recurrences (schema/engine = acl⇄mod substrate twins;
+  catalog/batch = name collisions; store = divergent). No new candidate. Incremental churn
+  elsewhere (content 621/621, identity PAR, events reminders). Future passes pivot from
+  censusing to re-testing gates as consumers mature.
+- **Date:** 2026-06-07 (radar loop, pass 16)
+- **Pass 16:** events started Phase 3 — **durable notification delivery on `lib/flow`**
+  (new W8: at-least-once + idempotency exemplar; fed-sx/mod roll their own outbox). The two
+  `notify.sx` (feed vs events) are a name collision (read-side digest vs delivery), noted
+  in W8. Substrate-adoption story deepening: app domains now consume persist (content/
+  commerce/events), flow (events), commerce (events), acl-authZ (identity).
+- **Date:** 2026-06-07 (radar loop, pass 15)
+- **Pass 15:** added the **scanning-method note** above after `query.sx` again proved to
+  be merged-lib copies (lib/prolog + lib/persist in every worktree). Corrected census
+  surfaced `wire`×2 (content+mod) → Rejected (shared role, divergent structure: generic SX
+  serializer vs bespoke pipe-format under a Prolog-env string-prim constraint). events↔
+  commerce integration appeared (paid tickets); acl/mod/search quiescent ~7 passes (now
+  API-stable). No new gate-clearer.
+- **Date:** 2026-06-07 (radar loop, pass 14)
+- **Pass 14:** filename census flagged `snapshot`×?? — but the `*/lib/persist/snapshot.sx`
+  copies are just the merged `lib/persist` in each worktree, NOT consumers (same artifact
+  as `lib/feed/rank.sx` everywhere). The one distinct file, `content/snapshot.sx`,
+  reimplements persist's projection-checkpoint on raw KV instead of using `persist/snapshot`
+  → new W7 (persist-adoption nudge). `audit`×3 = the W4 fakes (acl/mod/identity), known.
+- **Date:** 2026-06-07 (radar loop, pass 13)
+- **Pass 13 — honest re-test, no gate-clearer.** Re-tested the two longest-waiting gates
+  against the maturing app-domain loops: **W2** (per-viewer visibility) still 2 consumers
+  (feed, search) — commerce/content/events/identity add no per-viewer read filter; **W3**
+  (pagination) still 2 (feed, search) — `content/page.sx` is an HTML wrapper, not
+  pagination (filename collision, noted in W3). Incremental churn only elsewhere.
+- **Date:** 2026-06-07 (radar loop, pass 12)
+- **Pass 12:** `events` shipped **transactional booking on persist** (3rd live persist
+  consumer) using `persist/append-expect` (optimistic-concurrency CAS, lock-free capacity
+  safety). W4 ledger now shows a persist feature-ladder append → append-once → append-expect
+  that the hand-rolled fakes can't match. No new candidate; W4 reinforced.
+- **Date:** 2026-06-07 (radar loop, pass 11)
+- **Pass 11 — W4 sharpened with a consumer ledger.** commerce built an **order ledger on
+  persist** (2nd live exemplar; uses `persist/append-once` for webhook idempotency) and
+  identity a **grant audit ledger** (in-memory Erlang fake, gated on an Erlang↔persist
+  bridge). The append-only monotonic-seq event-log pattern is now validated across 4
+  domains, 2 live on persist + 3 fakes flagged for adoption. See W4 table.
+- **Date:** 2026-06-07 (radar loop, pass 10)
+- **Pass 10:** commerce/content/events/identity advancing (content 238/238). Probed a
+  shape outside the routing table — **guarded lifecycle state machines** (mod/lifecycle +
+  identity/membership) → new W6: shared *design principle*, divergent *structure*
+  (SX transition-table vs Erlang gen_server), NOT an extraction target. No gate-clearer.
+- **Date:** 2026-06-07 (radar loop, pass 9)
+- **Pass 9:** `commerce` + `content` reached Phase 2 (`content` 162/162). **Key find:
+  `content` built its op log directly on `persist/log`** (backend-injected, append+replay-
+  to-seq) — the live reference exemplar for W4 (see W4). `events` MONTHLY RRULE,
+  `identity` OAuth2 auth-code + PKCE, search boolean-filtered ranked. A1 still 6 adopters.
+- **Date:** 2026-06-06 (radar loop, pass 8)
+- **Pass 8 — fleet expanded by 4 app-domain loops** (the briefing's anticipated
+  `commerce`/`identity` arrivals, auto-picked up by dynamic discovery). All early-stage,
+  **pre-Phase-2 → moving targets, none count toward any gate yet**:
+  - `commerce` (Phase 1: `api/cart/catalog/price`). Its "per-line audit" is a cost
+    *breakdown view* (`api.sx:44`), **not** an append-only decision log → NOT a W4
+    consumer.
+  - `events` (Phase 1: `calendar.sx`, RRULE expansion).
+  - `identity` (early: `session/token`). Defers authZ to acl (`token.sx:15`) — reinforces
+    W2's "delegate `permit?` to acl-on-sx" routing; identity = authN, acl = authZ.
+  - `content` (just-started: `block.sx`).
+  These are the future consumers W2/W3 are waiting on — re-check their per-viewer filters
+  / pagination once each clears Phase 2. No new gate-clearer this pass.
+- **Pass 7:** **A1 jumped 4→6 adopters** — `acl` + `mod` migrated to the shared
+  conformance driver (first app-domain adopters; proves it generalizes past substrates).
+  `host-persist` closed its blob-adapter blocker (durable storage adapter now landing →
+  W4 migration path opening). search shipped proximity/NEAR; flow + persist quiescent.
+- **Pass 6:** new worktree **`host-persist`** (active — building persist's durable host
+  adapter); `feed` went quiescent (left tmux). acl shipped hardening (+25), fed-sx-m1 at
+  Step 6c. **mod loop independently wrote a shared-plumbing note** (`mod-on-sx.md`,
+  538b8a53) corroborating W4/W5 — folded its claims + home disagreements into W1/W4/W5.
+  No new gate-clearer (audit log still 2 consumers), but consumers are now API-stable.
+- **Pass 5:** search (+highlight/snippet) and fed-sx-m1 (+follower_graph) moved; rest
+  unchanged. Filename census: `api`×6, `fed`×3, then `schema/rank/query/page/explain/
+  engine/batch/audit`×2. Examined the ×6 `api.sx` → Rejected (shared name, divergent
+  structure incl. implicit-vs-explicit-state contract). rank/batch/engine all ≤2 +
+  substrate/domain-divergent → no new gate-clearer.
+- **Pass 4:** no churn vs pass 3 (same worktrees/tmux/HEADs/adopters). Swept audit+explain
+  surfaces: acl/mod share an append-only-log shape (→ sharpened W4 with persist/log API
+  evidence) and a proof-explain shape (→ new W5, substrate-bound). No new gate-clearer.
+- **Pass 3 (earlier today):** subsystem set + tmux + A1 adopters (4) all unchanged vs pass 2. Loops
+  advanced: acl shipped Phase 4 federation; search shipped Phase 4 + pagination; feed
+  shipped pagination/threading; mod at Ext 19 (capstone); persist did a worked acl-grants
+  migration (W4). New shape found: offset/limit pagination → folded into W3.
+- **Subsystem set discovered:** loop worktrees `acl, erlang, fed-prims, fed-sx-m1,
+  feed, flow, go, kernel, mod, ocaml, persist, radar, ruby, search,
+  sx-vm-extensions`; main-repo `lib/*` incl. merged `feed` + substrates (`apl,
+  common-lisp, datalog, erlang, forth, go, haskell, hyperscript, js, lua, minikanren,
+  ocaml, prolog, scheme, smalltalk, tcl`) + `lib/guest`.
+  Actively looping (tmux): `acl, fed-sx-m1, feed, flow, mod, persist, search`
+  (+ radar).
+- **New since pass 1:** worktrees `kernel` (empty/unset — not yet a repo) and `ocaml`
+  (`lib/ocaml/baseline` only). Both early-stage, pre–Phase 2 → out of proposal scope.
+- Re-enumerate every pass; new loops (e.g. a future `commerce`/`identity`) auto-join.
+
+**Census status (pass 17): EXHAUSTED.** Every own-namespace filename recurring ≥2× has
+been examined and dispositioned — further filename-censusing is low-yield until new
+subsystems/modules appear. Map:
+| filename | owners | verdict |
+|---|---|---|
+| `api` ×10 | all | Rejected — shared role, divergent state contract |
+| `fed`/`federation` | feed/search/mod/acl(+content) | W1 — theme not shape |
+| `audit` ×3 | acl/mod/identity | W4 — append-only log → persist/log |
+| `page` ×3 | feed/search (pagination) + content (HTML wrapper) | W3 + collision noted |
+| `explain` ×2 | acl/mod | W5 — proof tree, substrate-bound |
+| `snapshot` ×2 | persist(facet) + content(reinvents) | W7 |
+| `wire` ×2 | content(SX serializer) / mod(pipe-format) | Rejected — divergent |
+| `schema`,`engine` ×2 | acl/mod | substrate-twin parallels (Datalog vs Prolog); only audit (W4) is liftable |
+| `catalog`,`batch` ×2 | commerce/persist, mod/persist | name collisions, unrelated |
+| `normalize` ×2 | content(tree-prune)/feed(record-coerce) | name collision (pass 20) |
+| `index` ×2 | content(listing)/search(inverted index) | name collision (pass 20) |
+| `query` ×3 | content(doc-block)/search(bool AST)/persist(stream-read) | 3-way name collision (pass 20) |
+| `store` ×2 | content(on persist) / flow(workflow records) | related concept, divergent |
+| `rank` ×2 | feed/search | different domains (activities vs docs), ≤2 |
+**acl⇄mod are structural twins** (decision engine over a logic substrate, Datalog vs
+Prolog) — they parallel across engine/schema/explain/audit/fed, but only the *audit log*
+is substrate-agnostic and liftable (→ W4); the rest are substrate-idiomatic. Next passes:
+re-test gates (W2/W3/W8) as consumers mature, watch new modules — not re-census.
+
+**Meta-pattern (pass 20):** new module names keep *recurring* but the operations keep
+*colliding* — same noun, domain-specific op (normalize, index, query, catalog, batch,
+notify, page, store all proved to be collisions). This is *why* genuine extraction
+candidates are rare: the fleet shares vocabulary, not structure. The real shared assets
+are the **substrate subsystems** (persist, flow, acl, fed-sx) that app domains *adopt*
+(W1/W2/W4/W7/W8), not hand-rolled libs to extract.
+
+**Scanning-method note (learned the hard way, passes 5/12/14/15):** a filename census
+for *cross-subsystem* recurrence MUST restrict to each subsystem's OWN namespace —
+`X/lib/X/*.sx` — never `X/lib/*/`. The merged substrate libs (`lib/prolog`, `lib/persist`,
+`lib/feed`, `lib/datalog`, …) are checked out inside *every* worktree, so a naive census
+reports e.g. `query.sx`/`snapshot.sx`/`rank.sx` ×N as phantom recurrences that are really
+one merged file copied N times. Correct one-liner:
+`for w in <subsystems>; do for f in $w/lib/$w/*.sx; do basename $f .sx; done; done | sort | uniq -c | sort -rn`.
+
+---
+
+## Done
+
+### A1 · Shared conformance driver — ✅ COMPLETE (merged `db76cc8c`, pass 32)
+Full closed loop: radar detected it → dedicated `conformance` loop implemented it
+(classify-then-migrate-or-exclude, hard parity gate) → **merged to architecture**
+(`db76cc8c Merge loops/conformance into architecture: A1 conformance-driver migration`)
+→ radar spot-verified post-merge (**common-lisp 487/487 green** on architecture — exercises
+the new per-suite-counters/preloads driver feature, the riskiest change). Final state:
+- **13 on the shared driver:** acl, apl, common-lisp, datalog, erlang, events, feed, go,
+  haskell, mod, prolog, relations, search.
+- **6 correctly excluded** (foreign-program runners — a legitimately different harness):
+  forth, js, ocaml, smalltalk, tcl, lua.
+- The shared driver gained per-suite counters + per-suite preloads (backward-compatible);
+  spot-check confirms existing adopters unaffected. Coordination flag CLEARED.
+Detail of the migration arc retained under the original entry below.
+
+## Proposed (cleared the gate)
+
+_(empty — A1 graduated to Done, pass 32.)_
+
+### A1 · Adopt the shared conformance driver across subsystems
+- **Pattern:** every subsystem hand-rolls a near-identical `conformance.sh`
+  (epoch-load → eval → scoreboard emit) and an inline `<x>-test name got expected`
+  pass/fail counter.
+- **Consumers (≥3, overwhelming):** 15 `lib/*/conformance.sh` — `apl, feed, datalog,
+  flow, mod, lua, erlang, forth, go, common-lisp, haskell, js, ocaml, prolog,
+  smalltalk, tcl`.
+- **Home:** `lib/guest` — the one legitimate exception (the shared driver
+  `lib/guest/conformance.sh` + `lib/guest/conformance.sx` already exist; modes
+  `dict` and `counters`).
+- **Status: IN PROGRESS — 6 adopters (pass 7).** `prolog` (dict), `haskell` (counters),
+  `apl` (dict), `datalog` (dict), and **`acl` (dict) + `mod` (dict), newly migrated this
+  pass** — all 3-line exec shims into `lib/guest/conformance.sh` with a `conformance.conf`.
+  **acl + mod are the first *app-domain* adopters** (not language substrates) — strong
+  evidence the driver generalizes beyond the substrate layer, which was the open question.
+  The `apl` migration earlier *surfaced a latent bug*: the old awk extractor
+  under-counted `pipeline` (40 vs the real 152 assertions); true apl total is **562**,
+  not 450 — evidence that adopting the driver also improves correctness.
+- **Not a target (different harness shape):** `lua/conformance.sh` is a Python runner
+  (`lib/lua/conformance.py`) that walks real `*.lua` source files via `lua-eval-ast`
+  and classifies pass/fail/timeout — it does not run SX `deftest` suites with a
+  counter/dict scoreboard, so the shared driver does not fit. Excluded, not pending.
+- **Remaining hand-rolled candidates (~120–220 lines each):** `common-lisp, erlang,
+  feed, forth, go, js, ocaml, smalltalk, tcl` — now being worked by the dedicated
+  `conformance` loop (above). (`lua` excluded: walks real `*.lua` files via Python.
+  `smalltalk` likely excludes too — runs `*.st` via its own `test.sh`. `search` was
+  thought to be excluded but DID migrate via counters mode — see the 7-adopter note.)
+- **Action:** each remaining subsystem's OWN loop migrates when quiescent — add a
+  `conformance.conf` (+ a `test-harness.sx` preload defining its counters) and
+  replace `conformance.sh` with the 1-line exec shim
+  (`exec bash …/guest/conformance.sh …/conformance.conf "$@"`). Recipe template:
+  `lib/haskell/conformance.conf` (counters) or `lib/prolog/conformance.conf` (dict).
+  Keep the `bash lib/X/conformance.sh` entry point so no loop is disrupted.
+- **Priority: HIGH** (15 consumers, low risk, interface-preserving, additive).
+- **8 adopters on architecture** (pass 25): acl, apl, datalog, **events**, haskell, mod,
+  prolog, search — `events` migrated via its OWN loop; `search` via counters mode (which
+  corrects the earlier "search excluded" note). **+4 on the `loops/conformance` branch:
+  `common-lisp` 487/487, `erlang` 761/761, `feed` 189/189, `go` 609/609** — pending merge.
+  **5 EXCLUDED — all foreign-runner harnesses** (correctly, not force-migrated): `forth`
+  (Hayes core.fr via awk+python), `js` (test262 `.js`/`.expected`), `ocaml` (scrapes
+  `test.sh` + `.ml` baseline), `smalltalk` (scrapes `test.sh` + `*.st` corpus), `tcl`
+  (foreign `*.tcl` vs `# expected:` annotations).
+- **✅ CONFORMANCE LOOP WORKLIST COMPLETE (pass 31).** Final A1 picture:
+  - **12 on the shared driver:** acl, apl, datalog, events, haskell, mod, prolog, search
+    (on architecture) + common-lisp, erlang, feed, go (on `loops/conformance`, pending merge).
+  - **6 correctly excluded** (foreign-program runners — testing a language impl against an
+    external corpus is legitimately a different harness): forth, js, ocaml, smalltalk, tcl, lua.
+  - **Honest finding:** the driver's reach is narrower than the raw "15 conformance.sh"
+    count implied — language substrates that run real `.lua/.st/.ml/.tcl/.js/.fr` programs
+    *should* keep their foreign runners. ~half migrate, ~half don't, and that's correct.
+  - **One step left:** merge `loops/conformance` → architecture under the **adopter-parity
+    check** (the coordination flag above — the shared `lib/guest` driver change must be
+    proven non-regressive against all existing adopters first). The loop is now idle.
+- **NOW IN PROGRESS — dedicated loop (2026-06-07).** A human-triggered `conformance` loop
+  (worktree `/root/rose-ash-loops/conformance`, branch `loops/conformance`, tmux session
+  `a1-conformance`, briefing `plans/agent-briefings/conformance-loop.md`) is working the
+  remaining candidates (common-lisp, erlang, feed, forth, go, js, ocaml, smalltalk, tcl)
+  one per iteration, **classify-then-migrate-or-exclude with a hard test-count parity gate**
+  (reverts on any mismatch; never pushes to main/architecture). Radar tracks; it implements.
+- **Driver-capability boundary found (pass 24, first iteration).** The loop did NOT
+  force-migrate `common-lisp` (baseline 305/0 across 12 suites) — the shared driver can't
+  reproduce it: `MODE=counters` supports only ONE global pass/fail counter pair + ONE fixed
+  preload set, but common-lisp needs **per-suite counter names** (8 distinct pairs) and
+  **per-suite preload chains**. It logged a precise blocker + unblock path (extend the
+  `SUITES` entry format with optional per-suite counters/preloads) and moved on.
+- **Driver gap RESOLVED next iteration (pass 25) — but it touched the shared driver.** The
+  loop extended `lib/guest/conformance.sh` (+38 lines: optional per-suite counters + per-suite
+  preloads in the `SUITES` format, backward-compatible) and then migrated common-lisp at
+  **487/487** (above the 305 baseline — likely another extractor under-count correction, à la
+  apl's `pipeline`). The parity gate held throughout.
+- **⚠ COORDINATION FLAG (radar): the `loops/conformance` branch now carries a change to the
+  SHARED `lib/guest` driver** used by all 8 adopters. It's additive by design, but **before
+  this branch merges to `architecture`, re-run the existing adopters' suites under the new
+  driver to confirm zero regression** (acl/apl/datalog/events/haskell/mod/prolog/search).
+  This is the one cross-cutting risk in an otherwise per-subsystem-isolated effort — surfaced
+  here so the merge is gated on adopter-parity, not assumed.
+
+---
+
+## Watching (real but not yet through the gate)
+
+### W1 · Federation scaffold (merge / ingest / backfill / trust-gate)
+- **FAILS the structural-identity gate (deep-dived 2026-06-06, all 4 read).** Consumer
+  count is met (4) but they are *superficially* similar, not structurally identical —
+  the federated unit and merge op differ fundamentally:
+
+  | Subsystem (file) | Federated unit | Merge op | Trust gate | Injected transport |
+  |---|---|---|---|---|
+  | feed (`fed.sx:14,18,40`) | activity streams | dedupe by `(actor verb object)` | none (visibility via `permit?` separately) | `send-fn`, `fetch-fn` |
+  | search (`fed.sx:8`) | inverted indices | relabel DocId `peer*1000+local` + union posting lists | none | none (pure merge fn) |
+  | mod (`fed.sx:11-14,99`) | moderation decisions | advisory-list vs applied-list; bind iff `mod/trusted?` | **yes — runtime list** `mod/trusted? peer scope` | mock outbox / `fed-send!` |
+  | acl (`federation.sx:43,56`) | Datalog delegate facts | pull facts, gate by `trust`/`level_covers` rule, re-saturate | **yes — Datalog rule** at query time | `transport` dict |
+  | events (`federation.sx`) | calendar agendas | fold trusted peers' agendas into one sorted agenda + `:origin` provenance | **yes — runtime list** `ev/trusts?` (peer-id ∈ trust-set) | injected behind `ev/peer-agenda` |
+
+- **The ONLY real commonality is the injection seam** (now 5/5, pass 18), not extractable
+  code: every one says "the real transport is `fed-sx`'s job; inject `send-fn`/`fetch-fn`/
+  `transport`/`peer-agenda` and mock it in tests." That is an architectural *convention the
+  fleet already follows*. The merge op diverges 5 ways (dedupe / index-union / advisory /
+  fact-saturation / agenda-sort). The trust gate, where present, splits: **mod + events use
+  a runtime trust-set membership check; acl uses a declarative Datalog rule** — so even the
+  trust sub-pattern is 2-of-3, and the membership check is a trivial one-liner (below the
+  extraction threshold). No shared merge, no single shared trust mechanism.
+- **Disposition:** do NOT extract a shared "federation lib." When `fed-sx` ships its
+  real transport, these 4 become its *consumers* (wiring `send-fn`/`fetch-fn`/`transport`
+  to it) — that work belongs to each subsystem's loop + the `fed-sx` loop, not a
+  cross-cutting extraction. Stop re-proposing on the shared name. Home: `fed-sx`.
+- **Now 7 federation modules (pass 29):** + `relations` (Phase 4: erel trust-gating,
+  peer_rel/trust, fed-sx mock transport — Datalog-rule trust like acl) and `artdag`
+  (Phase 6: content-addressed cache + trust + **invalidation** — a merge shape unlike any
+  other). Each new one reinforces "theme not shape": 7 divergent merges, all sharing only
+  the inject-fed-sx-transport seam. Verdict unchanged — they're fed-sx consumers-in-waiting.
+- **Narrower sub-claim (mod note, pass 6; refined pass 18):** mod asserts the *fed
+  trust/outbox* shape shares between mod+acl. Radar evidence refines this: the trust gate
+  splits by mechanism, not by subsystem pair — **mod + events** both use a runtime
+  trust-set membership check (`mod/trusted?`, `ev/trusts?`), while **acl** uses a Datalog
+  rule. So a "trust-set membership" helper has 2 consumers (mod, events) — but it's a
+  one-line `member?` and the merge it gates diverges, so still not worth extracting.
+  Resolve at the architecture-merge point if a heavier shared trust-set surface emerges.
+
+### W2 · Per-viewer visibility / permission filter
+- **2 shipped consumers, same shape** — `filter <injected-permit> <ranked/candidate stream>`:
+  - `feed/lib/feed/acl.sx:27` `feed/visible = (feed/filter stream (fn (a) (permit? viewer a)))`,
+    capstone at `:34` (stream → ACL → rank → top-N). `permit?` injected, sig `(viewer activity)→bool`.
+  - `search/lib/search/fed.sx:16` `aclFilter permit docs = filter permit docs`;
+    `topNTfIdfAcl n permit ts idx = take n (aclFilter permit (rankTfIdf ts idx))`.
+    `permit` injected, sig `DocId→Bool` (viewer baked in by caller).
+- **NOT a consumer:** `mod/lib/mod/policy.sx` is moderation policy (reviewer actions),
+  no per-viewer read filter. So mod won't be the 3rd.
+- **Missing:** (a) only 2 consumers, need ≥3; (b) the two interfaces *diverge* —
+  feed passes `(viewer, item)`, search bakes the viewer in — so any shared form must
+  pick a convention; (c) both already **inject** the predicate, and the filter body is
+  literally one line (`filter permit xs`). Leaning toward: the predicate's home is
+  `acl-on-sx` (`permit?`), and the one-line filter is too thin to extract.
+- **Home when ripe:** delegate `permit?` to `acl-on-sx`; do NOT extract the filter.
+  Re-check if a 3rd genuine per-viewer read filter ships (e.g. events/commerce).
+
+### W3 · Collection helpers (group-by, dedupe-by-key, stable top-N, distinct-order, offset/limit page)
+- feed built all of these on APL primitives. search/commerce/events will want
+  group-by / top-N.
+- **NEW (2026-06-06): offset/limit pagination shipped in 2 subsystems, identical shape**
+  `take limit (drop offset xs)`:
+  - `feed/lib/feed/page.sx:9` `feed/page` (offset/limit window over a stream).
+  - `search/lib/search/page.sx:9` `paginate off lim docs = take lim (drop off docs)`.
+  - NOT a 3rd: `persist/lib/persist/query.sx:5` has a *since-cursor* for incremental log
+    consumption — resumable-stream semantics, not result windowing. Different shape.
+  - feed *also* has cursor-by-`:at` recency pagination (`page.sx:21-44`); search has no
+    cursor. So only the plain offset/limit window is shared, and it is a literal 1-liner.
+- **Missing:** ≥3 stable consumers; AND every item here is collection math that belongs
+  in the **substrate** (APL/Haskell already expose grade/sort/unique/take/drop), not a
+  shared lib. A 1-line `take/drop` window is far below the extraction threshold. Watch;
+  revisit only if a non-substrate subsystem needs the same windowing without take/drop.
+- **Filename-collision caution (pass 13):** `content/lib/content/page.sx` is an **HTML
+  page wrapper** (full HTML5 doc), NOT pagination — do not count it as a 3rd pagination
+  consumer. `page.sx` now means two unrelated things across the fleet. Re-tested pass 13:
+  pagination still only feed + search (2).
+
+### W4 · In-memory store fakes → `persist-on-sx`
+- Not an abstraction to extract — a migration target. Every subsystem fakes its
+  store with a mutable list (`feed/-log`, flow store, mod audit, …).
+- **Owner:** `persist-on-sx` (in progress). Tracked there, listed here for visibility.
+- **Concrete instance (file:line, found pass 4): the append-only decision/audit log.**
+  `acl/lib/acl/audit.sx` and `mod/lib/mod/audit.sx` are the SAME hand-rolled shape, and
+  `persist/lib/persist/log.sx` (the persist *log facet*) already implements it durably:
+
+  | role | acl/audit.sx | mod/audit.sx | persist/log.sx (target) |
+  |---|---|---|---|
+  | log var | `acl-audit-log` :9 | `mod/*audit-log*` :10 | backend stream |
+  | monotonic seq | `acl-audit-seq` :10 | `mod/*audit-seq*` :11 | per-stream high-water :1 |
+  | append (auto-seq) | `acl-audit-decide!` | commit :32 | `persist/append` :17 |
+  | count | `acl-audit-count` :51 | `mod/audit-count` :44 | `persist/count` :12 |
+  | read-all oldest-first | snapshot/tail :73 | `mod/audit-all` :43 | `persist/read` :29 |
+  | read seq≥from | — | by-seq | `persist/read-from` :31 |
+
+  Both deliberately use a monotonic seq with **no wall-clock** (deterministic/testable) —
+  identical to persist/log's design. Action when persist's host adapter lands: acl + mod
+  loops swap their in-memory log for `persist/log`. 2 consumers today; not a new lib —
+  the home already exists. Belongs to acl/mod loops × persist loop, not an extraction.
+- **Cross-loop corroboration (pass 6):** the mod loop independently reached the same
+  conclusion — `mod/plans/mod-on-sx.md` (commit 538b8a53): *"mod-sx (Prolog) and acl-sx
+  (Datalog) converged on the same module shape … only the audit log + fed trust/outbox
+  shapes truly share; extract at the architecture-merge point, refactoring both consumers
+  atomically, not unilaterally from a loop branch."* Confirms the shape AND the
+  do-not-extract-unilaterally stance.
+- **Home disagreement to resolve at merge:** mod's note proposes lifting the audit-log
+  primitives into **`lib/guest/`**. Radar routing disagrees: a durable append-only log is
+  a **`persist-on-sx`** concern (the log facet already exists), not language-impl plumbing.
+  Hold the line — `lib/guest` is lexer/parser/AST/HM/test-runner, not an event log.
+- **Migration is becoming concrete:** new `host-persist` loop (worktree + tmux, pass 6)
+  is building the durable-storage host adapter persist was blocked on — once it lands,
+  acl/mod can actually swap to `persist/log`.
+- **LIVE REFERENCE EXEMPLAR (pass 9): `content` already does it right.** `content`
+  (Phase 2 complete, 162/162) built its op log directly on `persist/log` instead of
+  faking it — `content/lib/content/store.sx`: backend injected via `(persist/open)`
+  ("content knows nothing about which backend", :10); append op as event
+  `persist/append b (content/-stream doc-id) …` (:20); read `persist/read` (:36);
+  `persist/last-seq` (:47); **version = replay op stream up to a seq**
+  (filter `persist/event-seq ev <= seq`, :61). "The op log is the source of truth …
+  the materialised doc is a cache, never primary state."
+  This proves the W4 target is real, not hypothetical: acl + mod's hand-rolled
+  monotonic-seq logs should adopt exactly content's `persist/log` pattern.
+- **Consumer ledger of the append-only monotonic-seq event log (pass 11):**
+
+  | consumer | what | backing | note |
+  |---|---|---|---|
+  | content (`store.sx`) | doc op log | **persist/log ✓ live** | plain append + replay-to-seq |
+  | commerce (`ledger.sx`) | order ledger | **persist/log ✓ live** | `persist/append-once` — idempotent, webhook-replay-safe :40,58 |
+  | events (`booking.sx`) | booking roster | **persist/log ✓ live** | `persist/append-expect` — optimistic-concurrency CAS, capacity-safe, lock-free |
+  | acl (`audit.sx`) | decision log | in-memory fake (SX) | migrate directly when host adapter lands |
+  | mod (`audit.sx`) | decision log | in-memory fake (SX) | migrate directly |
+  | identity (`audit.sx`) | grant ledger | in-memory fake (**Erlang**) | `{Seq,Subject,Action}`; needs an **Erlang↔persist bridge** first — author scoped it out until persist lands ("queryable semantics identical") |
+
+- **Two takeaways:** (1) the pattern is **validated across domains** — CRDT doc ops,
+  financial orders, event bookings, rule decisions, OAuth grants all reduce to the same
+  append-only monotonic-seq stream; (2) migrating to `persist/log` is strictly *better*
+  than the fakes — persist exposes a **feature ladder the fakes don't have**:
+  `append` (content) → `append-once`/idempotency (commerce) → `append-expect`/optimistic-
+  concurrency (events). Every fake would have to reinvent a weaker version of these.
+  This is an **adoption** item (the home already exists), NOT a new extraction — owned by
+  persist/host-persist × each consumer loop. The SX fakes (acl, mod) migrate directly;
+  the Erlang fake (identity) is gated on an Erlang↔persist bridge.
+
+### W5 · Proof-tree explanation over a logic-program derivation
+- `acl/lib/acl/explain.sx` (reconstructs a canonical proof by goal-directed search over a
+  saturated Datalog db) and `mod/lib/mod/explain.sx` (renders a Prolog-style proof tree
+  goal-by-goal with proved/unproved marks + unification bindings) are the same *idea*.
+- **Missing / disposition:** only 2 consumers, and they sit on **different substrates**
+  (acl→`lib/datalog`, mod→`lib/prolog`). Proof reconstruction/rendering is logic-engine
+  machinery → it belongs in each **substrate** (datalog/prolog), not a shared app lib.
+  Watch; revisit only if a 3rd logic-backed subsystem reimplements proof explanation.
+- **Cross-loop note (pass 6):** mod's note calls `mod/proof-goals` (re-query-each-goal)
+  generic and proposes lifting it into **`lib/guest/`**. Radar caveat: proof-tree
+  reconstruction *is* engine-agnostic logic machinery, but `lib/guest` is for
+  lexer/parser/AST/HM/match/test-runner — a logic-engine proof helper is a poor fit there.
+  If genuinely shared by ≥3 engines, a `lib/logic`-style substrate helper is the better
+  home than `lib/guest`. Still 2 consumers → stays Watching either way.
+
+---
+
+### W9 · Parent/child relationship tracking → the new `relations` subsystem (nascent)
+- **New subsystem (pass 28):** `relations` (loops/relations, Phase 1 — `schema.sx`+`api.sx`,
+  rel facts + `relate`/`unrelate`/`children`/`parents`/`related`, 22 tests). Per CLAUDE.md
+  it's the canonical "cross-domain parent/child relationship tracking."
+- **Why watch:** several subsystems already track parent/child *locally* — feed reply-to
+  threading (`thread`/`replies`), content nested block trees, events occurrence/RECURRENCE-ID
+  links. If `relations` becomes the shared home, those are candidate *delegators* (like
+  acl=authZ, persist=log). But it's **Phase 1, pre-Phase-2, moving target** — and each
+  local impl is currently domain-specific (different keys/semantics). Do NOT propose yet.
+  Re-check when relations is past Phase 2 AND ≥3 subsystems' relationship logic could
+  genuinely delegate to it. `artdag` also just spawned (nascent, 0 files) — tracking only.
+  (pass 32: `dream` + `maude` also spawned, nascent 0-files; `fed-prims` resumed.)
+- **Update pass 29:** relations rocketed to **Phase 4** (one gate — past Phase 2 — now met),
+  but it's building ITSELF out (schema/federation), **not yet being consumed** by anyone.
+  The blocker is the other gate: 0 subsystems currently *delegate* their parent/child logic
+  to it (feed/content/events still track locally). Watch for the first real delegation.
+  (artdag also raced to Phase 6 — these ports advance fast; treat committed state as truth.)
+
+### W8 · Durable externally-resumed orchestration on `lib/flow` (suspend→host-IO→resume)
+- **The shared shape:** a durable `flow` that `request`s an external action (a suspend
+  point), the **host** performs the IO, then `flow/resume`s the flow with the outcome;
+  flow's deterministic replay means a completed step never re-runs on recovery.
+- **Consumers (pass 24): 2 LIVE** (events delivery, commerce order saga).
+  - `events/lib/events/notify.sx` (**live**) — reminders/digests as durable flows;
+    suspend on delivery `dispatch`, resume with send outcome. At-least-once + idempotency key.
+  - `commerce` (**LIVE** as of pass 24 — "order lifecycle as a durable flow-on-sx flow,
+    21 tests, Phase 3 done") — order saga `(defflow ordf … (request 'reserve oid) … )`:
+    reserve→pay→fulfil as a flow, **payment stays suspended until the payment webhook calls
+    `flow/resume`**. Carries only the order-id; pure orchestration over `ledger.sx`.
+  - **Now 2 LIVE consumers** of the *same* pattern: long-running process, external resume
+    (delivery dispatch vs payment webhook). fed-sx/mod still roll their own outbox (watch
+    for convergence). Strengthens "lib/flow is the home"; still adoption, not extraction.
+- **Disposition:** `lib/flow` IS the abstraction (events proves it, commerce adopts it) →
+  this is an **adoption** observation like W4, NOT an extraction. Home = `lib/flow`.
+- **Flow-onboarding friction (light signal):** commerce's note logs real gotchas adopting
+  flow — `flow-make-env` returns a large likely-cyclic env (don't print it), env build is
+  slow (budget ~540s like flow's own suite). If ≥3 subsystems hit the same onboarding
+  gotchas, that's a signal to smooth `lib/flow`'s adopter API — flow's concern, flagged here.
+- **Name-collision caveat:** `notify.sx` means two unrelated things — `feed/notify.sx` is
+  a *read-side digest* (group inbox by verb+object), NOT delivery. Do not pair them.
+
+### W7 · Snapshot/projection-checkpoint reimplemented vs `persist/snapshot` (delegate)
+- `persist/lib/persist/snapshot.sx` already provides a **generic** projection checkpoint:
+  store `{:value :seq}` in the kv facet under a namespaced key; the headline property is
+  **snapshot + tail == full replay** (pure, clock-free).
+- `content/lib/content/snapshot.sx` **reimplements that same pattern on raw persist KV**
+  rather than delegating: `persist/kv-put b (content/-snap-key doc-id) {:doc … :seq seq}`
+  (:20), `persist/kv-has?`/`kv-get` (:27-28), and its own tail-replay (:53-59). It never
+  calls `persist/snapshot-*`. content's doc-materialisation *is* a projection fold over
+  its op stream — exactly what `persist/snapshot` checkpoints generically.
+- **Disposition:** persist-adoption nudge (like W4): content could delegate to
+  `persist/snapshot` (its projection = "fold ops → doc"), dropping the duplicated
+  KV+replay code. Home already exists → NOT an extraction; owned by content × persist
+  loops. Only 1 reinventor today; watch whether commerce/events/identity also hand-roll a
+  snapshot on raw KV instead of using the facet (would strengthen the nudge). NB timeline:
+  unclear if `persist/snapshot` predated content's — flag, don't blame.
+
+### W6 · Guarded lifecycle state machine (illegal transition = explicit error)
+- Recurs as a **design principle**, NOT a shared structure (found pass 10):
+  - `mod/lib/mod/lifecycle.sx` — pure SX: immutable case `{:state :error :history …}`,
+    explicit transition table `mod/lc-transitions` (:31), illegal transition returns the
+    case unchanged with `:error` set. States open→triaged→decided→appealed→final.
+  - `identity/lib/identity/membership.sx` — an **Erlang `gen_server`** fragment (identity
+    runs on erlang-on-sx): a `receive` loop with `case find(...) of … {error, St}` guards.
+    States none→pending→active→lapsed→revoked.
+- **Both share the guideline** ("invalid transitions are explicit errors, never silent
+  no-ops") but **implement it substrate-idiomatically** — SX transition-table over
+  immutable values vs an Erlang process loop with per-message case guards. Same W1/`api.sx`
+  trap: shared *idea*, divergent *structure*.
+- **Disposition:** not an extraction target — the FSM mechanism is ~10 substrate-specific
+  lines; the value is in each domain's state graph, not the plumbing. At most a **design
+  guideline** ("model lifecycle as a guarded FSM with explicit-error transitions"). Watch
+  whether commerce-checkout / events-booking add their own — if so it confirms the
+  *guideline*, still not a lib. Do not propose extracting a shared state-machine lib.
+
+## Rejected (considered, declined — do not re-propose)
+
+- **"Continuous auto-implementing abstractor loop."** Rejected at design time: an
+  agent writing across `lib/<x>/**` breaks the worktree isolation that makes the
+  fleet safe, and is rewarded for manufacturing premature/wrong abstractions. The
+  radar is read-only by design. (This file is the alternative.)
+- **Shared `api.sx` "public boundary" module (×6).** Rejected pass 4-5: every subsystem
+  has an `api.sx` (acl, feed, flow, mod, persist, search — a 100% filename match), but it
+  is a naming *convention for the public entry point*, not a shared structure. They
+  disagree on the most basic contract: acl/feed use **implicit module state**
+  (`acl/api.sx` "implicit current db", `feed/api.sx` "single mutable log") while
+  `persist/api.sx` threads an **explicit backend as every call's first arg**; flow's api
+  *builds a Scheme env*, search's api *concatenates a Haskell source string*, mod's is a
+  *lifecycle state-machine façade* (17 defs vs persist's 1). Same role, no common shape —
+  the W1 coincidental-resemblance trap. Do not re-propose on the filename.
+- **Shared `wire.sx` "serialization" module (×2).** Rejected pass 15: content + mod both
+  have a `wire.sx`, but `content/wire.sx` uses the **generic SX serializer**
+  (`serialize`/`parse`, full-fidelity round-trip) while `mod/wire.sx` is a **bespoke
+  versioned pipe-delimited line** (subset of fields, `split` hand-built over slice/len
+  because mod's Prolog-loaded env strips string prims). Shared role (wire format),
+  divergent structure + substrate constraint → not a candidate; the SX serializer is
+  already the shared tool for SX-substrate subsystems, and mod can't use it. (Same family
+  as the `api.sx` rejection above.)
+- **Dumping app-domain plumbing into `lib/guest`.** Rejected: `lib/guest` is for
+  language-implementation plumbing. App patterns route to acl/fed-sx/persist/
+  substrate/host instead (see the routing rule in the briefing).

plans/agent-briefings/mod-loop.md

@@ -1,136 +0,0 @@
-# mod-on-sx loop agent (single agent, queue-driven)
-
-Role: iterates `plans/mod-on-sx.md` forever. **Moderation on Prolog** — reports,
-policy rules, decisions as backtracking proof search, audit trails, escalation
-state machine, federation. Where acl-sx asks "may this happen?", mod-sx asks
-"should this stay?" Sits on `lib/prolog/` (its test suite already green); adds a
-moderation-shaped vocabulary on top.
-
-```
-description: mod-on-sx queue loop
-subagent_type: general-purpose
-run_in_background: true
-isolation: worktree
-```
-
-## Prompt
-
-You are the sole background agent working `plans/mod-on-sx.md`. Isolated worktree
-`/root/rose-ash-loops/mod` on branch `loops/mod`, forever, one commit per feature.
-Push to `origin/loops/mod` after every commit. Never touch `main` or `architecture`.
-
-## Restart baseline — check before iterating
-
-1. Read `plans/mod-on-sx.md` — roadmap + Progress log.
-2. `ls lib/mod/` — pick up from the most advanced file.
-3. If `lib/mod/tests/*.sx` exist, run them via `bash lib/mod/conformance.sh`. Green
-   before new work.
-4. If `lib/mod/scoreboard.md` exists, that's your baseline.
-5. Read the `lib/prolog/` public API once — that's your substrate. The plan cites
-   `lib/prolog/prolog.sx` but that file does **not** exist; the real entry points
-   are `lib/prolog/runtime.sx`, `query.sx`, `compiler.sx`, `parser.sx`. Investigate
-   them (sx_find_all / grep for `(define ` heads) to learn how to assert facts and
-   run queries before writing any policy code.
-
-## The queue
-
-Phase order per `plans/mod-on-sx.md`:
-
-- **Phase 1** — report representation + simple policy (schema, defrule→clause,
-  `(decide id)` query, api). Tests: spam keyword → hide, repeated reports →
-  escalate, no rule → keep.
-- **Phase 2** — evidence accumulation + audit trail (proof tree from derivation,
-  append-only decision log, retrieval).
-- **Phase 3** — escalation + lifecycle state machine
-  (`:open → :triaged → :decided → :appealed → :final`), auto/human tiers, appeal.
-- **Phase 4** — federation (cross-instance reports, decision sharing, trust model,
-  revocation; mock fed-sx in tests).
-
-Within a phase, pick the checkbox that unlocks the most tests per effort.
-
-Every iteration: implement → test → commit → tick `[ ]` → Progress log → next.
-
-## Ground rules (hard)
-
-- **Scope:** only `lib/mod/**` and `plans/mod-on-sx.md`. Do **not** edit `spec/`,
-  `hosts/`, `shared/`, other `lib/<lang>/` dirs, `lib/stdlib.sx`, or `lib/` root.
-  May **import** from `lib/prolog/` only (its public API). Do **not** modify Prolog.
-- **NEVER call `sx_build`.** 600s watchdog. If the sx_server binary is broken →
-  Blockers entry, stop. Run tests by invoking the sx_server binary directly from a
-  conformance.sh (see how `lib/prolog/conformance.sh` drives it), pointing
-  `SX_SERVER` at `/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe`
-  (fresh worktrees have no `_build/`).
-- **Shared-file issues** → plan's Blockers with minimal repro; don't fix here.
-- **SX files:** `sx-tree` MCP tools ONLY. **They take `file:` not `path:`** — a
-  wrong key yields `Yojson Type_error("Expected string, got null")`, which looks
-  like a broken binary but is just a param mismatch. `sx_validate` after edits.
-  Path-based edits (`sx_replace_node`) count comment headers in their indices and
-  can clobber the wrong node — re-read after, or prefer `sx_write_file` for small
-  files. **Default to `sx_write_file` (rewrite the whole file) over path/pattern
-  edits** — these are small files and the rewrite always parses-before-writing.
-  `sx_insert_near` inserts only the FIRST top-level form of a multi-form source
-  (it silently drops the rest; byte count barely moves) — never use it to add a
-  block of forms; rewrite the file instead. `sx_replace_by_pattern` is fiddly to
-  match — don't fight it, just rewrite.
-- **Unicode in `.sx`:** raw UTF-8 only, never `\uXXXX` escapes.
-- **Commit granularity:** one feature per commit. Short factual messages
-  (`mod: spam-keyword policy rule → :hide + 6 tests`). Push to `origin/loops/mod`.
-- **Plan file:** update Progress log (newest first) + tick boxes every commit.
-
-## mod-specific gotchas
-
-- **Decisions are proofs, not booleans.** A decision should carry *why* — the
-  matching rule / derivation — so Phase 2's audit trail can persist it. Design the
-  Phase-1 `decide` return shape with that in mind (don't return a bare keyword you
-  later have to retrofit).
-- **Policy chains backtrack.** Order matters: first matching rule wins. Make rule
-  precedence explicit and deterministic (tests will depend on it). A "no rule
-  matched" outcome must be a real, testable result (`:keep`), not a query failure
-  you forget to handle.
-- **You may lean on backtracking and cut.** The substrate is full Prolog —
-  `pl-query-all` gives every proven clause (use it for "strictest-wins" or
-  multi-match analysis), `pl-query-one` gives the first (clause order = precedence).
-  Cut (`!`) and the other control constructs are available if you need to prune
-  alternatives inside a body, but for rule precedence prefer plain clause ordering
-  resolved by `pl-query-one` — it's the clean, testable default. Don't hand-roll
-  precedence in SX when the engine's backtracking already gives it to you.
-- **Negative decisions need closed-world care.** "No evidence of violation" vs
-  "evidence absent" differ. Be explicit about negation-as-failure where you use it.
-  In this substrate, negation is the **functor** `not(Goal)` / `\+(Goal)` — the
-  prefix `\+ Goal` operator does **not** parse. Unknown predicates *fail* (no
-  existence error), so a report lacking some fact safely falls through a rule that
-  references it. Quote user-data atoms (`'foo-bar'`) — a bare hyphen is the minus
-  operator and will misparse.
-- **Loaded-env strips the high-level string prims.** After the prolog preloads are
-  loaded, the eval env loses `includes?`, `chars`, `str-join`, `keyword` and
-  friends — they are **undefined** (a function calling one fails only when called,
-  often mid-test-load, looking like a mystery crash). Only the set the Prolog
-  tokenizer itself uses survives: `slice`, `len`, `nth`, `=`, `join` (sep first:
-  `(join sep list)`), `downcase`, `map`, `reduce`, `append`/`append!`, `when`,
-  `cond`, `if`, `let`, `begin`, `get`, `dict-get`, `keys`, `empty?`, `first`,
-  `reverse`, `+`, `-`, `<`, `<=`. Build substring search yourself over `slice`/
-  `len` (see `mod/str-contains?`). Treat `not`, `and`, `or`, `>` as suspect in
-  guest code unless you've confirmed them — nest `if`/`when` and use `(< a b)`.
-- **Lifecycle state is separate from policy.** Keep the state machine (Phase 3) as
-  an SX module over the engine, not tangled into Prolog rules.
-- **Federation trust is advisory by default.** A peer's decision only binds locally
-  when `(trust peer :mod)` holds; otherwise it's a suggestion. Don't auto-apply.
-
-## General gotchas (all loops)
-
-- SX `do` = R7RS iteration. Use `begin` for multi-expr sequences.
-- `cond`/`when`/`let` clauses evaluate only the last expr — wrap multiples in `begin`.
-- `let` is parallel, not sequential — nest `let`s when a binding references an earlier one.
-- `env-bind!` creates a binding; `env-set!` mutates an existing one (walks scope chain).
-- `sx_validate` after every structural edit.
-- Namespace-prefix all guest helpers (`mod/...`) — short/host-colliding names
-  (`bind`, `conj`, `name`) get silently shadowed or hang the runtime.
-
-## Style
-
-- No comments in `.sx` unless non-obvious.
-- No new planning docs — update `plans/mod-on-sx.md` inline.
-- Short, factual commit messages.
-- One feature per iteration. Commit. Log. Push. Next.
-
-Go. Start by reading the plan; find the first unchecked `[ ]`; implement it.

plans/agent-briefings/radar-loop.md

@@ -0,0 +1,117 @@
+# abstraction-radar loop agent (read-only scout)
+
+Role: continuously scan **all** rose-ash subsystems for genuine abstraction /
+deduplication opportunities and maintain a ranked, evidence-backed backlog at
+`plans/abstractions.md`. You are a **scout, not an implementer** — you detect and
+document; you never refactor across subsystems.
+
+```
+description: abstraction-radar (read-only scout)
+subagent_type: general-purpose
+run_in_background: true
+isolation: worktree
+```
+
+## Prompt
+
+You are the sole background agent on branch `loops/radar`, worktree
+`/root/rose-ash-loops/radar`, forever. Self-paced. Your ONLY writes are to
+`plans/abstractions.md` (and, rarely, refining this briefing). Push to
+`origin/loops/radar` after each update. Never touch `main` or `architecture`.
+
+## The one hard rule: you do NOT edit `lib/**` — ever
+
+You read across every subsystem and write findings to `plans/abstractions.md`.
+You do **not** implement abstractions, migrate code, or edit any `lib/<x>/**`
+file in any worktree. Implementation is a separate, coordinated, human-triggered
+step — proposing well is your whole job. An abstractor that writes across
+subsystems would collide with the very isolation that keeps the other loops safe;
+that is exactly why you are read-only.
+
+## Dynamic discovery — re-enumerate every iteration, never hardcode
+
+The set of subsystems grows as new loops are spawned. Each iteration, rebuild the
+list from the filesystem + tmux so newly-added subsystems are automatically in
+scope:
+
+1. `ls -d /root/rose-ash-loops/*/` — every loop worktree. For a worktree named `X`,
+   its in-flight subsystem is `lib/X/` **inside that worktree**
+   (`/root/rose-ash-loops/X/lib/X/`) — that's the current, possibly-uncommitted
+   state. Read it there, not from your own worktree.
+2. `ls -d /root/rose-ash/lib/*/` — subsystems merged into / dormant on the main repo
+   (e.g. `feed` once merged, the language substrates `apl`/`haskell`/`prolog`/…).
+3. `tmux ls` — which subsystems are actively looping right now (affects whether a
+   candidate's consumers are "stable" — see the gate).
+
+Treat the union as your scan surface. When a `commerce` or `identity` loop appears
+later, step 1 picks it up with no change to you. Note in `abstractions.md` the
+date and the subsystem set you scanned, so drift is visible.
+
+## The AHA gate — before ANY candidate goes in the backlog as "proposed"
+
+"Avoid Hasty Abstractions." A wrong shared abstraction is far costlier than the
+duplication it replaces. A candidate may be listed as **proposed** only if ALL hold:
+
+- **≥3 real consumers** (not 2 — three independent uses). Fewer → log it under
+  "Watching" with its consumer count, do not propose.
+- **All consumers past Phase 2 and API-stable.** If a consumer's loop is mid-flight
+  and its interfaces are still moving (`tmux ls` shows it active + its plan has
+  unchecked early-phase boxes), the pattern is a moving target → "Watching."
+- **Structurally identical, not superficially similar.** Show the shared shape with
+  file:line evidence from each consumer. Coincidental resemblance is the #1 trap.
+- **It has a natural home.** And that home is usually **not** `lib/guest` — see the
+  routing rule below.
+
+Anything failing a gate goes under **Watching** (with what's missing) or
+**Rejected** (with why), never silently dropped — so it isn't re-proposed each pass.
+
+## Routing rule — most patterns do NOT belong in lib/guest
+
+`lib/guest` is for **language-implementation plumbing** (lexer/parser/AST/HM/match/
+test-runner), and it has its own consumer-gated roadmap. App-subsystem patterns
+almost always have a better home — route, don't dump:
+
+| Pattern kind | Home (not lib/guest) |
+|---|---|
+| per-viewer visibility / permission filter | `acl-on-sx` (delegate to `permit?`) |
+| federation scaffold (merge/ingest/backfill/trust) | `fed-sx` |
+| durable store / event log / kv | `persist-on-sx` |
+| collection math (group-by, dedupe, stable top-N) | the substrate (APL/Haskell/…) |
+| HTTP/handler/middleware plumbing | `host-on-sx` |
+| conformance/test harness | `lib/guest` (the one real exception — `test-runner.sx` + the shared driver live there) |
+
+If a pattern's home is one of the subsystems, the recommended **action** is "adopt
+/ delegate there," and the work belongs to that subsystem's own loop (in its
+scope), not to a cross-cutting change.
+
+## Each iteration
+
+1. Re-discover the subsystem set (above). Record it + the date in `abstractions.md`.
+2. Pick ONE thread: either deep-dive a "Watching" candidate to gather file:line
+   evidence and re-test its gates, or sweep for a new recurring shape across the
+   current set.
+3. Update `plans/abstractions.md`: move items between Watching / Proposed /
+   In-progress (owned by a subsystem loop) / Done / Rejected, with evidence.
+4. Keep it ranked by (consumers × effort-saved ÷ risk). Short, factual.
+5. Commit (`radar: <one-line finding>`) and push to `origin/loops/radar`.
+
+Do not invent work to look busy: if a pass finds nothing that clears the gate,
+record "scanned N subsystems on <date>, no new candidates cleared the gate" and
+stop until next iteration. Empty passes are a valid, honest result.
+
+## Gotchas
+
+- SX files: `sx-tree` MCP tools take `file:` not `path:`. But you mostly READ —
+  prefer `sx_find_across`, `sx_comp_usage`, `sx_comp_list`, `sx_summarise`, plus
+  `Grep`/`Glob`/`Bash` for cross-worktree scanning.
+- `plans/abstractions.md` is a `.md` — edit it with normal Write/Edit, not sx-tree.
+- Never run `sx_build`. You don't build anything; you read.
+
+## Style
+
+- Evidence over assertion: every claim cites file:line in ≥3 consumers.
+- Honest empty passes. Rejected items stay rejected with a reason.
+- One finding per commit. Update. Push. Next.
+
+Go. Read `plans/abstractions.md` (seeded), re-discover the subsystem set, and
+advance the highest-value thread.

plans/commerce-on-sx.md

@@ -0,0 +1,82 @@
+# commerce-on-sx: Catalog, cart, pricing & orders on miniKanren
+
+> **DRAFT outline.** The revenue vertical. Depends on `persist-on-sx` (durable
+> orders) and `flow-on-sx` (checkout as a durable flow). Don't start before
+> persist-on-sx Phase 1 is green.
+
+rose-ash's revenue engine — market (catalog), cart (checkout), orders (SumUp
+payment, reconciliation) — has no SX subsystem. The hard part of commerce isn't
+CRUD; it's **pricing**: discounts, bundles, tax, membership rates, promotions that
+stack (or don't). These are relations, and a relational engine can run them in
+multiple directions — forward ("what's the total?") and backward ("what promo code
+yields this total?", "which line item triggered the discount?").
+
+That's a miniKanren fit. Pricing/promotion rules are relational; cart and order
+*lifecycle* (reserve → pay → fulfil → reconcile) is a durable `flow`; the order
+ledger is a `persist` stream. Commerce is the first real **composition** subsystem.
+
+End-state: a catalog model, a relational pricing/promotion engine, a cart with
+deterministic totals, and an order lifecycle flow with payment-webhook
+reconciliation — all auditable via the event log.
+
+## Status (rolling)
+
+`bash lib/commerce/conformance.sh` → **0/0** (not yet started)
+
+## Ground rules
+
+- **Scope:** only `lib/commerce/**` and `plans/commerce-on-sx.md`. May **import**
+  from `lib/minikanren/`, and (once they exist) `lib/persist/` + `lib/flow/`. Do not
+  edit substrates.
+- **Architecture:** prices/promotions are miniKanren relations over catalog facts;
+  a cart total is a *deterministic* query result (first solution under a fixed rule
+  order). Order lifecycle is a `flow` that suspends at the payment IO boundary.
+  Money is integer minor units — never floats.
+- **Determinism:** promotion stacking must have explicit, tested precedence;
+  totals must be reproducible from the cart + catalog snapshot.
+- **Commits:** one feature per commit. Progress log + tick boxes.
+
+## Architecture sketch
+
+```
+Catalog + cart                          Total / order
+  product(id,price,tags)                  {:subtotal :discounts :tax :total}
+        │                                       ▲
+        ▼                                       │
+lib/commerce/catalog.sx                 lib/commerce/price.sx
+  — product / variant / stock facts       — miniKanren pricing relations
+        │                                  — promo stacking, membership rates
+        ▼                                       ▲
+lib/commerce/cart.sx                    lib/commerce/order.sx  (flow + store)
+  — line items, quantities                — reserve→pay→fulfil→reconcile
+        │                                  — SumUp webhook = flow resume
+        ▼                                       │
+lib/commerce/api.sx ── (commerce/add) (commerce/total) (commerce/checkout) ──┘
+```
+
+## Phase 1 — Catalog + cart + deterministic totals
+- [ ] `catalog.sx` — product/variant/stock as facts
+- [ ] `cart.sx` — line items, add/remove/qty
+- [ ] `price.sx` — base pricing relation, subtotal; tax
+- [ ] `api.sx` + tests + scoreboard + conformance.sh
+
+## Phase 2 — Promotions (relational)
+- [ ] promo rules: percentage, fixed, bundle, member rate
+- [ ] explicit stacking precedence; "best price" backward query
+- [ ] tests: stacking order, mutually-exclusive promos, member vs guest
+
+## Phase 3 — Order lifecycle (flow + store)
+- [ ] order flow: reserve stock → await payment → fulfil
+- [ ] payment webhook resumes the suspended flow
+- [ ] order ledger as a `persist` stream; idempotent reconciliation
+
+## Phase 4 — Reconciliation + federation
+- [ ] mismatch detection (paid≠ordered) as queries over the ledger
+- [ ] cross-instance catalog (federated marketplace) — out-of-scope stub
+- [ ] tests: webhook replay, partial refund, double-charge guard
+
+## Progress log
+(loop fills this in)
+
+## Blockers
+(loop fills this in)

plans/content-on-sx.md

@@ -0,0 +1,82 @@
+# content-on-sx: Documents, blocks & collaborative editing on Smalltalk
+
+> **DRAFT outline.** The CMS vertical — blog, WYSIWYG editor, Ghost sync. Depends
+> on `persist-on-sx` (document history as an event log). Ghost/CMS sync stays a thin
+> external adapter (Python/FFI) until a native replacement exists.
+
+rose-ash's `blog` domain is content management: a block-based WYSIWYG editor,
+navigation, Ghost CMS sync. A document is a tree of live blocks; editing is a
+stream of operations; collaboration needs conflict-free merge. That is an object
+model — blocks are objects, edits are messages, and a document is the object graph
+responding to them. Smalltalk's "everything is an object responding to messages"
+maps directly to a block/WYSIWYG model, and a semilattice (CRDT) merge keeps
+concurrent edits conflict-free.
+
+End-state: a Smalltalk-on-SX document model (typed blocks, structural ops),
+operation log + CRDT merge for collaborative editing, versioning/history via the
+event store, and a render boundary to HTML/SX. External CMS (Ghost) sync is an
+injected adapter, not core.
+
+## Status (rolling)
+
+`bash lib/content/conformance.sh` → **0/0** (not yet started)
+
+## Ground rules
+
+- **Scope:** only `lib/content/**` and `plans/content-on-sx.md`. May **import**
+  from `lib/smalltalk/`, and (once it exists) `lib/persist/`. Do not edit substrates.
+- **Architecture:** a document is an ordered tree of blocks (objects); an edit is a
+  message (`insert`/`update`/`move`/`delete`); concurrent edits merge via a
+  commutative (CRDT/semilattice) operation so order doesn't matter. History is the
+  `persist` event stream; any version is a replay.
+- **Determinism:** merge must be commutative + idempotent (test: apply ops in any
+  order / twice → same document).
+- **Commits:** one feature per commit. Progress log + tick boxes.
+
+## Architecture sketch
+
+```
+Edit op                                 Rendered document
+  (insert block after id) ...             HTML / SX tree
+        │                                       ▲
+        ▼                                       │
+lib/content/block.sx                    lib/content/render.sx
+  — typed blocks as objects               — block tree → HTML/SX
+  — heading/text/image/embed              — (reuses SX render boundary)
+        │                                       ▲
+        ▼                                       │
+lib/content/doc.sx                      lib/content/merge.sx
+  — ordered block tree                    — CRDT/semilattice op merge
+  — apply op, structural moves            — concurrent-edit reconciliation
+        │                                       ▲
+        ▼                                       │
+lib/content/api.sx ── (content/edit) (content/render) (content/history) ──┐
+        │                                                                  │
+        ├── op log + versions → persist                                      │
+        └── Ghost/CMS sync  → injected external adapter (thin, non-core) ──┘
+```
+
+## Phase 1 — Block document model
+- [ ] `block.sx` — typed block objects
+- [ ] `doc.sx` — ordered tree, apply edit op, structural moves
+- [ ] `render.sx` — block tree → HTML/SX
+- [ ] `api.sx` + tests + scoreboard + conformance.sh
+
+## Phase 2 — Op log + versioning
+- [ ] edit ops as `persist` events; replay to any version
+- [ ] `(content/history doc)`, diff between versions
+
+## Phase 3 — Collaborative merge (CRDT)
+- [ ] commutative/idempotent op merge
+- [ ] concurrent-edit tests (any order, double-apply → identical)
+
+## Phase 4 — External sync + federation
+- [ ] Ghost/CMS sync via injected adapter (import/export)
+- [ ] federated documents (peer-authored blocks) — trust-gated stub
+- [ ] tests: round-trip import/export, conflict on concurrent external edit
+
+## Progress log
+(loop fills this in)
+
+## Blockers
+(loop fills this in)

plans/events-on-sx.md

@@ -0,0 +1,81 @@
+# events-on-sx: Calendar, ticketing & notification delivery on Datalog
+
+> **DRAFT outline.** The events vertical + the shared notification-delivery edge.
+> Depends on `persist-on-sx` (bookings ledger) and `flow-on-sx` (reminders, retrying
+> delivery). Pairs with `commerce-on-sx` for paid tickets.
+
+rose-ash's `events` domain is calendar + ticketing: recurring events, availability,
+capacity, bookings. Scheduling is constraint reasoning — "is this slot free given
+recurrence, capacity, and the attendee's other bookings?" — which is rule
+evaluation over facts. Datalog expresses availability, recurrence expansion, and
+capacity as rules; a booking is a transaction; reminders and digests are durable
+`flow`s. Notification *delivery* (email/push) — needed here and by `feed/notify` —
+is folded in as an injected transport, extractable later.
+
+End-state: a Datalog-on-SX events layer with recurrence expansion, availability +
+capacity rules, transactional booking, and a flow-driven notification dispatcher
+(reminders, digests, retries) over an injected transport.
+
+## Status (rolling)
+
+`bash lib/events/conformance.sh` → **0/0** (not yet started)
+
+## Ground rules
+
+- **Scope:** only `lib/events/**` and `plans/events-on-sx.md`. May **import** from
+  `lib/datalog/`, and (once they exist) `lib/persist/` + `lib/flow/`. Do not edit
+  substrates.
+- **Architecture:** events/availability/capacity are Datalog facts + rules;
+  recurrence expands to occurrence facts within a window; a booking checks rules
+  then appends a `persist` event (idempotent, capacity-safe). Notifications are flows
+  that suspend on transport IO and retry on failure.
+- **Determinism:** recurrence expansion + availability must be reproducible for a
+  fixed window + ruleset; capacity checks must be race-safe (no overbooking).
+- **Commits:** one feature per commit. Progress log + tick boxes.
+
+## Architecture sketch
+
+```
+Event + booking                         Result
+  event(id,start,rrule,capacity)          {:booked | :full | :conflict} + reminders
+        │                                       ▲
+        ▼                                       │
+lib/events/calendar.sx                  lib/events/availability.sx
+  — event facts, recurrence (RRULE)       — free/busy + capacity rules (Datalog)
+  — expand occurrences in window                │
+        │                                       ▲
+        ▼                                       │
+lib/events/booking.sx                   lib/events/notify.sx   (flow)
+  — transactional, capacity-safe          — reminders / digests, retry on fail
+  — bookings → persist ledger               — injected transport (email/push)
+        │                                       │
+        ▼                                       ▼
+lib/events/api.sx ── (events/schedule) (events/book) (events/agenda) ──────┘
+```
+
+## Phase 1 — Calendar + recurrence
+- [ ] `calendar.sx` — event facts, RRULE expansion in a window
+- [ ] `availability.sx` — free/busy rules
+- [ ] `api.sx` + tests + scoreboard + conformance.sh
+
+## Phase 2 — Ticketing + booking
+- [ ] capacity rules; transactional booking → `persist` (no overbooking)
+- [ ] paid tickets compose with `commerce` order flow
+- [ ] tests: capacity edge, double-book guard, conflict detection
+
+## Phase 3 — Notification delivery (flow)
+- [ ] `notify.sx` — reminder/digest flows over injected transport
+- [ ] retry/backoff on transport failure (flow suspend/resume)
+- [ ] tests: delivery success, retry path, idempotent re-send
+- [ ] NOTE: shared with `feed/notify` — candidate for later extraction to a
+  `delivery-on-sx` once a second consumer is real
+
+## Phase 4 — Federation
+- [ ] cross-instance events (peer calendar) — trust-gated stub
+- [ ] tests: federated agenda merge
+
+## Progress log
+(loop fills this in)
+
+## Blockers
+(loop fills this in)

plans/feed-on-sx.md

@@ -14,7 +14,7 @@ APL, ACL visibility filtering via `lib/acl/`, federation via fed-sx.
 
 ## Status (rolling)
 
-`bash lib/feed/conformance.sh` → **0/0** (not yet started)
+`bash lib/feed/conformance.sh` → **189/189** (Phases 1–4 + TF-IDF, notifications, home, smart-dedupe, trending, mute, pagination, threading)
 
 ## Ground rules
 
@@ -59,47 +59,118 @@ lib/feed/api.sx           lib/feed/fed.sx
 
 ## Phase 1 — Stream model + basic ops
 
-- [ ] `lib/feed/normalize.sx` — activity record schema; coerce arbitrary inputs
+- [x] `lib/feed/normalize.sx` — activity record schema; coerce arbitrary inputs
-- [ ] `lib/feed/stream.sx` — APL vector representation; filter by predicate; sort by
+- [x] `lib/feed/stream.sx` — APL vector representation; filter by predicate; sort by
   `:at`; take N (`↑`); reverse (`⌽`)
-- [ ] `lib/feed/api.sx` — `(feed/post activity)`, `(feed/all)`
+- [x] `lib/feed/api.sx` — `(feed/post activity)`, `(feed/all)`
-- [ ] `lib/feed/tests/basic.sx` — 15+ cases: post, query, filter, sort
+- [x] `lib/feed/tests/basic.sx` — 30 cases: normalize defaults, filter, sort, take, api
-- [ ] `lib/feed/scoreboard.{json,md}`
+- [x] `lib/feed/scoreboard.{json,md}`
-- [ ] `lib/feed/conformance.sh`
+- [x] `lib/feed/conformance.sh`
 
 ## Phase 2 — Fanout via outer product
 
-- [ ] follower graph: `followers user → vector of user ids`
+- [x] follower graph: `followers user → vector of user ids` (`feed/follow-graph`,
-- [ ] fanout: activities `∘.×` followers → matrix `(activity, follower)` pairs
+  `feed/followers`; graph = `{followee -> (followers)}` dict)
-- [ ] flatten to inbox events vector
+- [x] fanout: activities `∘.×` audience → matrix via `apl-outer feed/-mk-event`
-- [ ] dedupe — group by `(actor, verb, object)` collapse to one inbox event per
+- [x] flatten to inbox events vector (`feed/-flatten` rank-2 → rank-1)
-  receiver
+- [x] dedupe — `feed/dedupe-inbox` by `(to, actor, verb, object)`; also
-- [ ] `lib/feed/tests/fanout.sx` — 20+ cases: small graph, mutual follow, popular
+  `feed/dedupe-activities` `(actor verb object)` and `feed/dedupe-collapse`
-  actor (high-fanout), cross-post dedupe
+  `(verb object)` for cross-actor likes
+- [x] `lib/feed/tests/fanout.sx` — 29 cases: small graph, mutual follow, star
+  (high-fanout), empty graph, unfollowed actor, cross-post dedupe
 
 ## Phase 3 — Aggregation + ranking
 
-- [ ] group-by — `(actor, day) → count` via key-reduce
+- [x] group-by — `feed/group-by`/`feed/group-count` key-reduce; `feed/by-actor-day`
-- [ ] velocity score — recent activity count over window
+  buckets `(actor, day)` via `feed/day` (string-joined keys)
-- [ ] recency score — decay by age
+- [x] velocity score — `feed/velocity` counts actor's activities in `(at-window, at]`
-- [ ] composite rank — weighted sum of components
+- [x] recency score — `feed/recency` half-life decay `0.5^(age/hl)`
-- [ ] top-N per timeline
+- [x] composite rank — `feed/composite` weighted sum of `(weight scorer)` parts
-- [ ] `lib/feed/tests/rank.sx` — 20+ cases: ranking stable on tie, decay shape,
+- [x] top-N per timeline — `feed/top` = rank then take
-  per-user weighting
+- [x] `lib/feed/tests/rank.sx` — 24 cases: decay shape, velocity burst, stable
+  tie-break, top-N, composite
 
 ## Phase 4 — Visibility filter + federation
 
-- [ ] ACL filter — each candidate activity passed through `(acl/permit? viewer :read
+`lib/acl/` and fed-sx don't exist yet and are out of scope (import `lib/apl/`
-  activity)`
+only), so ACL/transport are injected: `permit?`, `remote?`, `send-fn`, `fetch-fn`
-- [ ] fed-sx outbound — local `feed/post` fans out to remote followers' inboxes
+are function parameters. Real acl-sx / fed-sx wire in at the call site unchanged.
-- [ ] fed-sx inbound — peer activities arrive at local inbox
+
-- [ ] backfill on subscribe — request peer history, merge into local stream
+- [x] ACL filter — `feed/visible stream viewer permit?`; default `feed/permit-acl?`
-- [ ] `lib/feed/tests/integration.sx` — federated timeline with ACL applied
+  reads `:visible-to` allowlist (+ author-sees-own); per-viewer, never cached
+- [x] fed-sx outbound — `feed/federate`/`feed/deliver` fan out then partition
+  local vs remote inboxes; remote events handed to injected `send-fn`
+- [x] fed-sx inbound — `feed/inbound` normalizes + `feed/ingest` dedupes peer
+  activities into the local stream
+- [x] backfill on subscribe — `feed/backfill local fetch-fn peer-id`
+- [x] `lib/feed/tests/integration.sx` — 22 cases incl. end-to-end
+  `feed/timeline` (federated → ACL for viewer → recency rank → top-N)
 
 ## Progress log
 
-(loop fills this in)
+- **Phase 1 done (30/30).** Stream = APL rank-1 array whose ravel holds activity
+  dicts. `normalize.sx` (record schema + accessors), `stream.sx` (filter via `/`
+  compress, sort via `⍋` grade-up [stable], take via `↑`, reverse via `⌽`,
+  by-actor/verb/object/since predicates), `api.sx` (mutable log: post/all/reset!/size).
+  Substrate: `apl-compress`, `apl-grade-up`, `apl-take`, `apl-reverse`, `make-array`.
+  Grade-up returns 1-based indices (⎕IO=1), is stable on ties → deterministic sort.
+- **Phase 2 done (59/59 total).** `fanout.sx` (graph + `apl-outer` showcase),
+  `dedupe.sx` (per-key dedupe, first-wins stable). Key APL gotcha: `scalar?` is
+  true for ANY dict and `disclose` nils a non-array dict, so an apl-outer combiner
+  MUST `enclose` its event dict — apl-outer discloses it back intact. `apl-unique`
+  preserves first-occurrence order; dict `keys` order is NOT stable, so
+  `feed/audience` sorts (else recipient ordering flakes). `apl-compress` needs a
+  rank-1 array, so the (activity×follower) matrix is flattened to its ravel before
+  the edge-guard filter.
+- **Phase 3 done (83/83 total).** `aggregate.sx` (group-by/count, day buckets) +
+  `rank.sx` (recency/velocity/engagement scorers, composite, top-N). `sort` is
+  single-arg ascending only — no comparator — so ranking uses a stable two-pass
+  `apl-grade-down` (by :at desc, then by score desc) for deterministic tie-breaks.
+  Dict keys must be strings, so composite group keys are string-joined ("actor#day").
+- **Phase 4 done (105/105 total).** `acl.sx` (per-viewer `feed/visible`,
+  `feed/timeline` capstone) + `fed.sx` (merge/ingest/inbound/backfill/federate/
+  deliver). ACL/transport are dependency-injected (permit?/remote?/send-fn/fetch-fn)
+  since lib/acl + fed-sx don't exist. `feed/normalize` now MERGEs defaults over the
+  raw dict (was projecting to 5 keys) so extra metadata (:visible-to, peer fields)
+  survives — matches the "flexible bag" principle.
 
-## Blockers
+## Roadmap is complete (all 4 phases). Possible follow-ups:
 
-(loop fills this in)
+- Wire real acl-sx once `lib/acl/` exists (swap injected `permit?`).
+- Wire real fed-sx transport (swap `send-fn`/`fetch-fn`).
+- [x] TF-IDF over `:tags` for content ranking — `content.sx`: `feed/tag-df`,
+  `feed/tag-idf` (log N/df), `feed/tfidf-score`, `feed/by-relevance`; 15 tests.
+  Composes as a scorer with rank.sx. (120/120 total.)
+- [x] Notification feed (verb-filtered, per-recipient) — `notify.sx`:
+  `feed/notifications`, `feed/notify-verbs`, `feed/notify-digest` (collapses
+  "X, Y liked Z" by (verb,object), sorted-deterministic); 8 tests. (128/128 total.)
+- [x] **Capstone** `feed/home` — the whole pipeline as one line: fanout ∘ inbox ∘
+  dedupe ∘ ACL ∘ rank ∘ take (`home.sx`); 6 tests incl. per-viewer ACL + cross-post
+  dedupe. (134/134 total.)
+- [x] Per-verb dedupe rules (briefing gotcha #3) — `feed/dedupe-smart` /
+  `feed/smart-key`: reactions (like/follow/boost/...) collapse cross-actor on
+  (verb,object); posts stay distinct per actor. `feed/collapse-verbs` is
+  rebindable policy; 9 tests. (143/143 total.)
+- [x] Trending — `feed/trending` / `feed/trending-actors`: objects/actors ranked
+  by activity count in a recency window, count-desc with key-asc tiebreak
+  (`trending.sx`); 11 tests. (154/154 total.)
+- [x] Mute/block — `feed/mute-actors` / `feed/mute-tags` / `feed/mute-objects` /
+  `feed/apply-prefs`: viewer-controlled per-request filtering (complements ACL's
+  author-controlled visibility) (`mute.sx`); 9 tests. (163/163 total.)
+- [x] Pagination — `feed/page`/`feed/page-count` (offset) + `feed/before`/
+  `feed/after`/`feed/page-before`/`feed/next-cursor` (cursor by :at, stable under
+  inserts) (`page.sx`); 14 tests. (177/177 total.)
+- [x] Threading — `feed/replies`/`feed/reply-count`/`feed/thread`/
+  `feed/thread-objects`/`feed/thread-size`: conversation closure over `:reply-to`
+  (transitive fixpoint), chronological (`thread.sx`); 12 tests. (189/189 total.)
+
+(none)
+
+## Notes for next iteration
+
+- sx-tree MCP tools take `file:` NOT `path:` (CLAUDE.md is stale). Wrong key →
+  `Yojson Type_error("Expected string, got null")`. Looks like a broken binary, isn't.
+- sx_server binary lives in main repo: `/root/rose-ash/hosts/ocaml/_build/default/bin/sx_server.exe`
+  (worktree has no `_build`). conformance.sh already points there with relative fallback.
+- Phase 2 substrate verified available: `apl-outer` (∘.×), `apl-member` (∊),
+  `apl-unique`, `apl-iota` (1-based).

plans/host-on-sx.md

@@ -0,0 +1,100 @@
+# host-on-sx: The SX web host — off Quart, onto the kernel (Dream-bound)
+
+> **DRAFT outline.** The integration boundary that turns the subsystem libraries
+> into running services, and the strangler path off Python/Quart. This is the
+> dependency hub — it imports every subsystem. Decision recorded below: native
+> server + SXTP **now**, `dream-on-sx` framework layer **next**, Python only at the
+> external-integration edges.
+
+The subsystems (`feed`, `search`, `acl`, `mod`, `flow`, `commerce`, `identity`,
+`content`, `events`) are libraries. Something has to receive an HTTP request, route
+it, call the right subsystem, and serialize the response. Today that's Python/Quart
+— the one large non-SX component in the stack: separate runtime, deploy, and
+failure mode. The goal is to move the web/host/domain layer onto the SX substrate
+and retire Quart, **incrementally (strangler-fig), never big-bang.**
+
+This is already underway: a native OCaml HTTP server is live in prod on
+`sx.rose-ash.com` (~3ms cached, ~323 req/s, ~2MB RSS), `defhandler`/`defpage`
+exist, and a partial **SXTP** protocol is specced. That is the unblocked near-term
+host — no `ocaml-on-sx` dependency.
+
+## Two layers, two timelines
+
+1. **Now (unblocked): native server + SXTP adapter + SX handlers.** Route rose-ash
+   endpoints onto the SX host one at a time. Each migrated endpoint is an SX
+   handler dispatching to a subsystem; Quart proxies the rest until cut over.
+2. **Next: `dream-on-sx` as the framework layer.** Dream gives Quart-grade
+   ergonomics — typed routing, middleware stacks, sessions, CSRF. It is gated on
+   `ocaml-on-sx` Phases 1–5 + minimal stdlib. **This plan is the concrete target
+   user that un-parks `dream-on-sx`** (see `plans/dream-on-sx.md`): "the subsystems
+   need an HTTP front door" is the real feature pulling Dream. Until then, do not
+   block migration on Dream — the native server is sufficient.
+3. **Always: Python only at the edges.** External integrations — SumUp payments,
+   Ghost CMS, ActivityPub crypto, IPFS/Kubo — ride Python libraries today. They
+   stay as thin injected adapters (Python/FFI) behind subsystem interfaces until
+   native replacements exist. "Drop Quart" ≠ "drop every line of Python."
+
+## Status (rolling)
+
+`bash lib/host/conformance.sh` → **0/0** (not yet started)
+
+## Ground rules
+
+- **Scope:** `lib/host/**` and `plans/host-on-sx.md`. May **import** every subsystem
+  + the kernel's server/SXTP surface. Do **not** edit `spec/`, `hosts/`, `shared/`,
+  or subsystem internals — wire to their public APIs only. Host-primitive / server
+  changes belong in `hosts/` (out of scope) → Blockers.
+- **Architecture:** a route maps (method, path) → handler; a handler is an SX fn
+  `request -> response` that calls subsystem APIs; middleware is composed handlers
+  (auth via `identity`, permission via `acl`, mute via subsystem prefs). SXTP is the
+  wire format between host and subsystem-as-service.
+- **Migration discipline:** each endpoint moved must be behavior-equivalent to its
+  Quart original (golden-response test before flip). Keep a migration ledger.
+- **Commits:** one feature per commit. Progress log + tick boxes.
+
+## Architecture sketch
+
+```
+HTTP request                            HTTP response
+        │                                       ▲
+        ▼                                       │
+native OCaml http server (prod)  ──────►  lib/host/router.sx
+   (hosts/ — out of scope)                  — (method,path) → handler
+        │                                       ▲
+        ▼                                       │
+lib/host/middleware.sx                  lib/host/handler.sx
+  — auth(identity) ∘ acl ∘ mute ∘ ...     — request → subsystem call → response
+        │                                       ▲
+        ▼                                       │
+lib/host/sxtp.sx                        subsystem APIs (feed/search/commerce/…)
+  — wire format, host↔service             — called via public interfaces
+        │
+        └── external edges: SumUp / Ghost / AP / IPFS  → injected Python/FFI adapters
+```
+
+## Phase 1 — Router + handler + one real endpoint
+- [ ] `router.sx` — route table, (method,path) match
+- [ ] `handler.sx` — request/response model, subsystem dispatch
+- [ ] migrate ONE read endpoint (e.g. a feed timeline) end-to-end, golden test
+- [ ] `conformance.sh` + scoreboard
+
+## Phase 2 — Middleware + SXTP
+- [ ] `middleware.sx` — composable auth/acl/mute/error layers
+- [ ] `sxtp.sx` — host↔subsystem wire format (align with existing spec)
+- [ ] migrate a write endpoint (auth + permission + action)
+
+## Phase 3 — Strangler migration ledger
+- [ ] enumerate Quart endpoints; track migrated vs proxied
+- [ ] golden-response harness vs the live Quart responses
+- [ ] cut over a whole domain (smallest: `likes` or `relations`) as proof
+
+## Phase 4 — Dream framework layer (gated)
+- [ ] gate: `ocaml-on-sx` Phases 1–5 + minimal stdlib green
+- [ ] adopt `dream-on-sx` routing/middleware/session ergonomics over the same handlers
+- [ ] re-home external adapters as native where replacements land
+
+## Progress log
+(loop fills this in)
+
+## Blockers
+(loop fills this in)

plans/identity-on-sx.md

@@ -0,0 +1,84 @@
+# identity-on-sx: OAuth2, sessions & membership on Erlang
+
+> **DRAFT outline.** The identity core `acl-on-sx` assumes already exists. `acl`
+> answers "may X do Y"; identity answers "who is X, and how did they prove it."
+> Depends on `persist-on-sx` (grant/audit ledger). Pairs with `acl-on-sx`.
+
+rose-ash's `account` domain is the OAuth2 authorization server every other app is
+a client of: silent SSO, per-app first-party cookies, grant verification,
+membership. Sessions and grants are **long-lived, concurrent, individually
+addressable, and expire on their own** — that is the actor model. Erlang's
+processes + mailboxes map cleanly: a session is a process, token issue/refresh/
+revoke are messages, expiry is a process timeout, and SSO is one process answering
+many apps.
+
+End-state: an Erlang-on-SX layer with the OAuth2 authorization-code + silent
+(`prompt=none`) flows as message protocols, a session/grant registry, token
+lifecycle (issue/refresh/revoke/introspect), and membership state — all auditable
+through the event log, all authorization questions delegated to `acl-on-sx`.
+
+## Status (rolling)
+
+`bash lib/identity/conformance.sh` → **0/0** (not yet started)
+
+## Ground rules
+
+- **Scope:** only `lib/identity/**` and `plans/identity-on-sx.md`. May **import**
+  from `lib/erlang/`, and (once they exist) `lib/persist/` + `lib/acl/`. Do not edit
+  substrates.
+- **Architecture:** a session/grant is a process holding its own state; the
+  registry routes messages by subject/client id. Tokens are opaque + introspected,
+  not self-validating (revocation must be real). Authorization decisions are NOT
+  made here — `identity` proves identity, `acl` decides permission.
+- **Security:** revocation is immediate (kill the process / tombstone the grant);
+  no decision relies on a token that outlived its grant. Negative answers are
+  explicit, never "absence of a yes."
+- **Commits:** one feature per commit. Progress log + tick boxes.
+
+## Architecture sketch
+
+```
+Auth request                            Token / session
+  (authorize client scope subject)        {:access :refresh :expires :grant}
+        │                                       ▲
+        ▼                                       │
+lib/identity/oauth.sx                   lib/identity/token.sx
+  — authz-code + prompt=none flows        — issue / refresh / revoke / introspect
+  — as Erlang message protocols           — opaque tokens, grant-backed
+        │                                       ▲
+        ▼                                       │
+lib/identity/session.sx                 lib/identity/registry.sx
+  — session = process, expiry=timeout     — route by subject/client; SSO fan-out
+        │                                       │
+        ▼                                       ▼
+lib/identity/api.sx ── (identity/login) (identity/grant?) (identity/revoke) ──┐
+        │                                                                      │
+        └──────── grant + audit events → persist ;  permission? → acl ──────────┘
+```
+
+## Phase 1 — Sessions + tokens
+- [ ] `session.sx` — session process, create/lookup/expire
+- [ ] `token.sx` — issue/introspect/revoke (opaque, grant-backed)
+- [ ] `registry.sx` — route by subject/client
+- [ ] `api.sx` + tests + scoreboard + conformance.sh
+
+## Phase 2 — OAuth2 flows
+- [ ] authorization-code flow as a message protocol
+- [ ] refresh + rotation; revocation cascades to issued tokens
+- [ ] tests: full code exchange, refresh, revoke-then-use (must fail)
+
+## Phase 3 — Silent SSO + membership
+- [ ] `prompt=none` cross-app login (one session, many clients)
+- [ ] membership state + per-app grant projection
+- [ ] grant verification delegated cache (mirror Redis-cache pattern)
+
+## Phase 4 — Audit + federation
+- [ ] every issue/refresh/revoke is a `persist` event; `(identity/audit subject)`
+- [ ] federated identity (peer-asserted subject) — advisory, trust-gated stub
+- [ ] tests: audit completeness, cross-instance subject mapping
+
+## Progress log
+(loop fills this in)
+
+## Blockers
+(loop fills this in)

plans/mod-on-sx.md

@@ -16,7 +16,7 @@ federation extension.
 
 ## Status (rolling)
 
-`bash lib/mod/conformance.sh` → **390/390** (roadmap + 19 extensions complete)
+`bash lib/mod/conformance.sh` → **0/0** (not yet started)
 
 ## Ground rules
 
@@ -66,386 +66,47 @@ lib/mod/fed.sx
 
 ## Phase 1 — Report representation + simple policy
 
-- [x] `lib/mod/schema.sx` — `report(id, by, about)`, `classification(id, kind)`,
+- [ ] `lib/mod/schema.sx` — `report(id, by, about, reason)`, `evidence(id, kind, val)`,
-  `report_count(subject, n)` Prolog facts; keyword classifier derives evidence
+  `policy-action(report, action)` predicates as Prolog facts/rules
-- [x] `lib/mod/policy.sx` — `mod/mk-rule` + ordered `mod/default-rules`; conditions
+- [ ] `lib/mod/policy.sx` — rule declarations: `(defrule action :when conditions)`
-  (`:classification`, `:count-at-least`) compile to Prolog goals; `policy_action/3`
+  desugars to Prolog clause
-  clauses, last clause `true` so every report yields at least `:keep`
+- [ ] `lib/mod/engine.sx` — `(decide report-id)` runs Prolog query, returns first
-- [x] `lib/mod/engine.sx` — `(mod/decide-report r reports rules)` queries
+  matching action
-  `policy_action(Id, Action, Rule)` with `pl-query-one` (clause order = precedence);
+- [ ] `lib/mod/api.sx` — `(mod/report by about reason)`, `(mod/decide id)`
-  returns a decision dict `{:action :rule :report-id :proof}` carrying the why
+- [ ] `lib/mod/tests/decide.sx` — 15+ cases: spam keyword → hide, repeated reports →
-- [x] `lib/mod/api.sx` — registry + `(mod/report by about reason)`, `(mod/decide id)`
+  escalate, no rule matches → keep
-- [x] `lib/mod/tests/decide.sx` — 31 cases: spam/abuse keyword, repeated→escalate,
+- [ ] `lib/mod/scoreboard.{json,md}`
-  no-rule→keep, precedence (spam beats repeated), proof shape, registry ids
+- [ ] `lib/mod/conformance.sh`
-- [x] `lib/mod/scoreboard.{json,md}`
-- [x] `lib/mod/conformance.sh`
 
 ## Phase 2 — Evidence + audit trail
 
-- [x] evidence accumulation — `report :evidence` list; `mod/attach-evidence` +
+- [ ] evidence accumulation — additional facts asserted before query
-  api `mod/add-evidence`; asserted as `evidence(Id, 'kind', 'val')` facts;
+- [ ] proof tree from Prolog derivation tree
-  new `:evidence` condition + `reviewer-remove` rule consume it
+- [ ] `lib/mod/audit.sx` — append-only log (decision + proof + evidence snapshot)
-- [x] proof tree from Prolog derivation — `mod/proof-goals` re-queries each body
+- [ ] `(mod/audit id)` retrieval
-  goal (id bound) against the same DB, recording goal text, solved?, and the
+- [ ] `lib/mod/tests/audit.sx` — proof correctness, trail completeness
-  bindings that satisfied it (e.g. count goal yields N=3, S=subject)
-- [x] `lib/mod/audit.sx` — append-only log: monotonic `:seq`, decision + proof +
-  evidence snapshot; never mutates prior entries
-- [x] `(mod/audit id)` retrieval (+ `mod/audit-latest`, `mod/audit-all`, count)
-- [x] `lib/mod/tests/audit.sx` — 29 cases: proof goal text/bindings, evidence-driven
-  decisions, append-only ordering, per-report retrieval, snapshot-at-decision-time
 
 ## Phase 3 — Escalation + lifecycle state machine
 
-- [x] state machine: `lib/mod/lifecycle.sx` — `:open → :triaged → :decided →
+- [ ] state machine: `:open → :triaged → :decided → :appealed → :final`
-  :appealed → :final` as a pure SX module over the engine; transition table guards
+- [ ] auto-tier: first-pass rules decide quick cases
-  illegal moves (sets `:error`, leaves state); immutable cases with `:history`
+- [ ] human-tier: rules that emit `:escalate` move to next state
-- [x] auto-tier: `mod/case-triage` runs the engine; terminal action (hide/remove/
+- [ ] appeal: re-runs with appeal evidence, may override prior decision
-  keep) → tier `auto`, `mod/case-resolve` advances to `:decided`
+- [ ] `(mod/appeal id new-evidence)` API
-- [x] human-tier: `:escalate` action → tier `human`; `mod/case-resolve` is blocked
+- [ ] `lib/mod/tests/escalation.sx` — full lifecycle traversal cases
-  (sets `:error`); `mod/case-review` attaches evidence, re-decides, advances
-- [x] appeal: `mod/case-appeal` attaches appeal evidence + re-runs the engine; new
-  `exonerated-keep` rule (top precedence) lets exoneration override a prior `:hide`
-- [x] `(mod/appeal id new-evidence)` API — lifecycle façade over a case registry in
-  api.sx (`mod/triage` / `resolve` / `review` / `appeal` / `finalize`), logging
-  each committed decision to the audit trail
-- [x] `lib/mod/tests/escalation.sx` — 46 cases: transition guards, auto/human tiers,
-  blocked resolve, full appeal-override traversal, history, api façade
 
 ## Phase 4 — Federation
 
-- [x] cross-instance reports — `mod/fed-receive-report peer …` ingests a peer's
+- [ ] cross-instance reports — peer raises report about local content (or vice versa)
-  report into the local registry, tagging origin; `mod/report-origin` resolves it
+- [ ] decision sharing — actions taken locally propagate to peers via fed-sx
-  (local reports default to `"local"`); the engine decides federated reports
+- [ ] trust model — peer's decision is advisory unless `(trust peer :mod)` is granted
-  unchanged
+- [ ] revocation — undo applied moderation if proof was invalidated
-- [x] decision sharing — `mod/fed-share-decision decision peers` pushes messages to
+- [ ] `lib/mod/tests/fed.sx` — federated decision chains (mock fed-sx in tests)
-  the mock outbox (`mod/fed-send!` is the seam the real fed-sx transport replaces)
-- [x] trust model — `mod/fed-receive-decision` applies a peer's decision locally
-  ONLY when `(mod/trusted? peer :mod)`; otherwise it lands in the advisory log,
-  unapplied. `mod/grant-trust` / `mod/revoke-trust` manage the trust registry
-- [x] revocation — `mod/fed-revoke!` marks the applied action revoked + emits a
-  revocation message to the origin; `mod/fed-revoke-if-invalidated` re-runs the
-  engine and revokes only when the action no longer holds (proof invalidated)
-- [x] `lib/mod/tests/fed.sx` — 26 cases: trust grant/scope/revoke, cross-instance
-  ingest + origin, outbox sharing, advisory-vs-trusted apply, revocation +
-  invalidation (exoneration flips hide→keep → revoked)
-
-## Extensions (post-roadmap)
-
-- [x] **Ext 1 — negation-as-failure** (`lib/mod/tests/extensions.sx`, +14). Report
-  `:attrs`; policy conditions `(:attr "x")` → `attr(Id, x)` and `(:not <cond>)` →
-  `not(<cond>)` (the Prolog supports `not/1` and `\+/1` as *functors*, not the
-  prefix `\+` operator). Closed-world example: "hide spam UNLESS author verified".
-  Default policy untouched — demonstrated via custom rule sets, so all 132 base
-  tests stay green.
-- [x] **Ext 2 — weighted/aggregate scoring** (+8). Report `:signals` ({:kind
-  :weight}) project to `signal(Id, 'kind', weight)` facts; condition
-  `(:score-at-least N)` → `aggregate_all(sum(W), signal(Id, _, W), T), T >= N`.
-  Many weak signals accumulate past a threshold — genuine Prolog arithmetic
-  aggregation. Default policy untouched.
-- [x] **Ext 3 — proof explanation** (`lib/mod/explain.sx`, +10). `mod/explain`
-  renders a decision into a readable "why": action + rule, evidence line, and the
-  derivation goal-by-goal with `[proved]`/`[unproved]` marks and unification
-  bindings. E.g. `Report rc: escalate (rule: repeated-escalate)` … `[proved]
-  report(rc, B, S), report_count(S, N), N >= 3  {B=ann, N=3, S=dave}`.
-- [x] **Ext 19 — end-to-end triage pipeline** (`lib/mod/pipeline.sx`, +15).
-  `mod/triage-pipeline domain r reports actor` runs a report through domain-policy
-  decision → explanation → AP activity → wire, returning the full bundle. The test
-  is a genuine integration across 5 modules including a federated handoff (market
-  decision → wire → peer → trust-gated apply). The capstone that proves the
-  independently-built modules compose.
-- [x] **Ext 18 — ergonomic defrule / ruleset** (`lib/mod/defrule.sx`, +11). The
-  roadmap's `(defrule …)` surface, done with `&rest` variadics (no macro needed —
-  conditions are already plain data): `mod/defrule` collects trailing conditions,
-  `mod/ruleset` assembles rules. Produces structurally identical rules to `mk-rule`
-  and works in the engine unchanged.
-- [x] **Ext 17 — per-domain policy registry** (`lib/mod/policies.sx`, +14).
-  `mod/register-policy! domain rules` + `mod/decide-in domain r reports` give each
-  rose-ash domain (blog/market/events/…) its own rule set; unregistered domains
-  fall back to default-rules so a new domain is never unmoderated. Same spam report
-  → :remove under a strict market policy, :hide under blog's default.
-- [x] **Ext 16 — ActivityPub-shaped export** (`lib/mod/activity.sx`, +17).
-  `mod/decision->activity` maps a decision to a moderation verb (remove→Delete,
-  ban→Block, hide/escalate→Flag, keep→no activity) shaped like an AP activity
-  ({:type :actor :object :summary}), the precise mod action preserved in :action.
-  `mod/decisions->activities` batch-exports, dropping keeps — ready for the
-  platform's AP event bus / federated peers.
-- [x] **Ext 15 — disjunctive conditions** (`policy.sx` + `tests/disjunction.sx`,
-  +10). `(:any (list c1 c2 …))` compiles to Prolog disjunction `(g1 ; g2 ; …)`,
-  completing the condition boolean algebra (AND via the :when list, `:not`, `:any`).
-  Composes recursively — `:any` over `:not`/`:attr`/classification, and ANDs with
-  other conditions in the same rule. One rule now covers "spam OR abuse".
-- [x] **Ext 14 — decision wire format** (`lib/mod/wire.sx`, +16). The bytes that
-  cross `fed/fed-send!`: `mod/decision->wire` emits a versioned pipe-delimited line
-  (`MOD1|r1|hide|spam-hide`), `mod/wire->decision` parses it back (`mod/wire-valid?`
-  guards). Built `mod/split-char` over `slice`/`len` (loaded env has no split).
-  Integration test exercises the full path: serialize → wire → deserialize →
-  `fed-receive-decision` trust-gating (untrusted→advisory, trusted→applied).
-- [x] **Ext 13 — SLA sweep over pending cases** (`lib/mod/sla.sx`, +15). Composes
-  lifecycle (Phase 3) with time (Ext 12): a timed-case pairs a case with the tick
-  it entered its state; `mod/overdue?` flags pending cases (open/triaged/appealed)
-  past a deadline; `mod/sla-sweep` returns the breached report ids. Terminal states
-  never breach. Pure overlay — lifecycle stays timeless, the caller stamps entry.
-- [x] **Ext 12 — temporal burst detection** (`lib/mod/temporal.sx`, +15). Reports
-  gain an `:at` tick (deterministic, supplied — never clock-read).
-  `mod/decide-temporal now window` counts reports about the subject within
-  `[now-window, now]`, asserts `burst_count/2`, and a `(:burst-at-least K)` rule
-  fires only on a real burst. Verified: 3 reports at ticks 10/11/12 → hide;
-  3 reports at 1/2/12 (window 5) → keep, while the plain count rule escalates both.
-- [x] **Ext 11 — batch triage + corpus analytics** (`lib/mod/batch.sx`, +17).
-  `mod/decide-batch` triages a queue; `mod/action-histogram` summarizes outcomes by
-  action; `mod/rule-coverage` / `mod/never-fired` measure which rules fire across a
-  corpus — the *empirical* complement to lint's static unreachable check (Ext 5):
-  lint finds rules that can't fire, never-fired finds rules that didn't.
-- [x] **Ext 10 — policy what-if / impact** (`lib/mod/whatif.sx`, +13).
-  `mod/decision-diff` compares one report's action under two rule sets;
-  `mod/policy-impact` runs a batch and returns only the reports whose decision
-  flips; `mod/impact-count` / `mod/impact-report` summarize. Lets a team measure a
-  policy change before shipping it (e.g. "removing spam-hide flips r1 hide→keep").
-- [x] **Ext 9 — policy dry-run trace** (`lib/mod/trace.sx`, +15). `mod/trace-rules`
-  evaluates a report against every rule and returns each rule's proved/unproved
-  status + its goal-by-goal derivation, so an unproved rule shows which goal
-  failed. `mod/first-proved` = the winner (engine precedence), `mod/proved-rules`
-  the full firing set, `mod/trace-report` a `[fires]`/`[  -  ]` rendering. Answers
-  "why didn't my rule fire?" without instrumenting the engine.
-- [x] **Ext 8 — quorum over distinct reporters** (`lib/mod/quorum.sx`, +9). Anti-
-  brigade: `(:reporters-at-least N)` compiles to `setof(Br, report(_, Br, Sr), Bsr),
-  length(Bsr, Nr), Nr >= N` — distinct reporters, not raw report count.
-  `mod/decide-quorum` asserts every report's `report/3` fact (the base engine only
-  asserts the decided one) so Prolog can aggregate reporters. Verified one user
-  filing 3 reports stays `:keep` under quorum while the count rule would escalate.
-  (Substrate note: `^` existential doesn't parse; `setof(B, p(_, B, S), …)` with `_`
-  yields the distinct set in a single solution here.)
-- [x] **Ext 7 — repeat-offender escalation** (`lib/mod/offenders.sx`, +19). The
-  audit log as evidence: `mod/subject-sanctions` counts prior hide/remove/ban
-  decisions about a subject; `mod/decide-escalating id k` decides normally then
-  upgrades a *sanction* to `:ban` when the subject already has ≥k prior sanctions.
-  Non-sanction outcomes (keep/escalate) pass through untouched. First decision
-  whose input spans history beyond the single report — read from the trail, not
-  re-derived.
-- [x] **Ext 6 — strictest-wins strategy** (`lib/mod/severity.sx`, +14). Alternative
-  to first-match: `mod/decide-strictest` collects every proven rule (`pl-query-all`)
-  and picks the highest-`mod/action-severity` action (keep<escalate<hide<remove<ban).
-  Diverges from the default engine when rule order and severity disagree. Same
-  decision shape + `:strategy`; engine untouched.
-- [x] **Ext 5 — policy lint** (`lib/mod/lint.sx`, +14). Static analysis of a rule
-  set: `mod/unreachable-rules` flags rules placed after an unconditional (always-
-  matching) rule — structurally dead under first-match precedence;
-  `mod/has-catchall?` checks every report gets a decision; `mod/duplicate-rule-names`
-  + `mod/rules-ok?` give a one-call well-formedness verdict. No engine run needed.
-- [x] **Ext 4 — report linking / dedup** (`lib/mod/link.sx`, +12). `mod/related-ids`
-  and `mod/reporters-of` find reports about a subject via a Prolog relational query
-  (`report(Id, _, 'subject')`) — the policy substrate reused for retrieval.
-  `mod/dedup-reports` collapses identical reports (reporter|subject|reason key,
-  case-insensitive); `mod/distinct-reporters-of` counts unique reporters.
-
-## Shared-plumbing extraction — evaluated post-merge, DECLINED
-
-Both layers now live on architecture; the extraction was evaluated by reading
-both implementations side by side. **Finding: do not extract — the convergence is
-in module *names* only, not implementations.** The engines and decision models
-genuinely differ, so a shared module would be premature abstraction that ages
-badly. (This reverses the pre-read note that listed audit + fed trust/outbox as
-candidates; reading the code showed they don't actually share.)
-
-- **Federation — zero shared code.** mod gates trust in SX (a `{:peer :scope}`
-  registry + `grant`/`revoke`/`trusted?`) and shares *decisions* (outbox,
-  advisory/applied logs, `receive-decision`). acl gates trust *inside Datalog*
-  (`trust(Peer,L)` / `level_covers` facts + an engine rule re-checked per query)
-  and shares *facts* (`fetch`/`collect`/`build-db`, `assert!`/`retract!`). acl has
-  no trust registry, no `trusted?`, no outbox. Opposite architectures — the only
-  common token is the word "trust."
-- **Audit — only a ~5-fn core overlaps, and it diverges.** Entry shapes differ
-  entirely (mod `{:action :rule :proof :evidence :report-id :seq}` vs acl
-  `{:allowed? :act :subj :res :seq}`); seq base differs (acl 0, mod 1, both
-  test-visible); op sets barely intersect (mod: by-`report-id` + `latest`; acl:
-  `tail`/`snapshot`/`restore`/`serialize`); even the list idiom differs (acl
-  `append!`+copy vs mod pure `append`+`set!`). A shared module would also have to
-  satisfy two different restricted eval envs (prolog- vs datalog-loaded). Cost
-  (shared module + refactor both + rewrite acl's serialize/snapshot onto a foreign
-  core + cross-env risk + coupling two independent loops) far exceeds the benefit
-  (dedup ~5 trivial lines that don't even agree on seq-base or mutation idiom).
-- **Engines + `explain`** were never shareable: Datalog yields derivation trees
-  natively; mod reconstructs proofs via per-goal `pl-query-all`.
-- **Trivia** (`join-with`, `any?`, `str-contains?`, `distinct`) is one-liners, not
-  worth a module.
-
-**Outcome:** keep mod (Prolog) and acl (Datalog) as parallel independent
-implementations. The parallel structure is correct for two different engines; the
-shared abstraction is not. Revisit only if a third rule-engine consumer appears
-with the *same* trust/audit model (rule of three), not before.
 
 ## Progress log
 
-- **Ext 19 — end-to-end triage pipeline, 390/390** (+15). Capstone: one
+(loop fills this in)
-  orchestration call composes domain policy + decide + explain + activity + wire,
-  and the integration test runs the whole federated path (decide in a domain →
-  wire → peer → trust-gated apply) across 5 modules. Confirms the subsystem — built
-  module-by-module — actually composes end to end. mod-sx now spans schema → policy
-  DSL (boolean algebra + count/score/reporters/burst) → engine + proofs → audit →
-  lifecycle → SLA → federation (trust/wire/AP) → analytics (trace/whatif/lint/batch)
-  → domain policies → pipeline, all on the green lib/prolog substrate, 390 tests.
-- **Ext 18 — ergonomic defrule / ruleset, 375/375** (+11). Closes the roadmap's
-  original `defrule` surface. `fn` supports `&rest` here, and conditions evaluate
-  to plain data, so no macro is needed — variadic functions give the ergonomics
-  safely. Equivalence to `mk-rule` is asserted, so it's pure sugar with no new
-  semantics.
-- **Ext 17 — per-domain policy registry, 364/364** (+14). Multi-tenant policy:
-  the engine already took `rules` as a parameter, so domain-scoping is just a
-  registry + a default fallback — no engine change. Makes the whole policy
-  vocabulary (16 prior features) per-domain configurable. Default fallback means
-  adding a domain can't accidentally leave it unmoderated.
-- **Ext 16 — ActivityPub-shaped export, 350/350** (+17). Bridges mod-sx to the
-  wider rose-ash platform, which propagates cross-domain effects as AP-shaped
-  activities. Decisions become Flag/Delete/Block activities (keep = no-op); with
-  the wire format (Ext 14) and fed trust model (Phase 4) the federated moderation
-  path is now end-to-end: decide → activity/wire → peer → trust-gate → apply.
-- **Ext 15 — disjunctive conditions, 333/333** (+10). The condition DSL is now a
-  full boolean algebra: AND (the :when list), `:not` (NAF), `:any` (Prolog `;`).
-  cond->goal recurses, so the combinators nest arbitrarily — `:any` of `:not`s, an
-  `:any` ANDed with a `:not`, etc. — and the proof tree shows the compiled
-  disjunction verbatim. Maps directly onto Prolog's own control constructs rather
-  than reimplementing boolean logic in SX.
-- **Ext 14 — decision wire format, 323/323** (+16). Fills the federation transport
-  seam: decisions now serialize to a portable line and parse back, and the
-  integration test runs the whole federated path end-to-end (serialize on one
-  instance → trust-gated apply on another). Needed a hand-rolled `split-char`
-  (loaded env has no split) — over `slice`/`len`, same toolkit as `str-contains?`.
-- **Ext 13 — SLA sweep, 307/307** (+15). Two subsystems compose cleanly: lifecycle
-  states + temporal ticks → "which pending cases have sat too long". Kept lifecycle
-  pure by having the SLA layer carry entry-time externally (timed-case wrapper)
-  rather than stamping the case — same separation-of-concerns as keeping the state
-  machine out of Prolog.
-- **Ext 12 — temporal burst detection, 292/292** (+15). Adds the time dimension:
-  a windowed count distinguishes a burst from slow accumulation, where the plain
-  count rule cannot. Time is a supplied tick (`:at`), keeping everything
-  deterministic and testable — no clock primitive. Fifth report field (`:at`)
-  threaded through the rebuild helpers, same non-breaking pattern as
-  evidence/attrs/signals; all 277 prior tests stayed green.
-- **Ext 11 — batch triage + corpus analytics, 277/277** (+17). Operational layer:
-  triage a queue, histogram the outcomes, and measure rule coverage over real
-  data. `never-fired` pairs with lint (Ext 5) — static "can't fire" vs empirical
-  "didn't fire" — giving policy authors both views of dead rules. Histogram avoids
-  dict mutation by counting over a fixed action vocabulary.
-- **Ext 10 — policy what-if / impact, 260/260** (+13). Decisions are now
-  comparable across rule sets — diff one report, or batch a whole set and surface
-  only the flips. Pure SX over `decide-report`, no engine change. Closes the
-  policy-authoring loop alongside lint (Ext 5) and trace (Ext 9): lint checks
-  well-formedness, trace explains one report, what-if measures a change's blast
-  radius before it ships.
-- **Ext 9 — policy dry-run trace, 247/247** (+15). Whole-rule-set diagnostics over
-  the proof machinery: every rule's fire/no-fire and the goal that decided it. The
-  winner agrees with `decide-report` by construction (first proved = pl-query-one),
-  cross-checked in a test. Turns the proof tree from a per-decision artifact into a
-  policy-debugging tool.
-- **Ext 8 — quorum over distinct reporters, 232/232** (+9). Distinct-reporter
-  consensus via Prolog `setof`/`length`, requiring a second engine variant that
-  asserts all reports (the base engine deliberately scopes facts to the decided
-  report). Demonstrates the substrate handles set-aggregation, and that the
-  brigade case (one actor, many reports) is defeated by counting reporters not
-  reports. `^` existential doesn't parse here — `setof(B, p(_,B,S), …)` with `_`
-  gives the distinct set in one solution.
-- **Ext 7 — repeat-offender escalation, 223/223** (+19). Decisions can now depend
-  on history: the append-only audit log is read back as evidence, and a subject
-  with k prior sanctions has its next sanction upgraded to `:ban`. Closes the loop
-  between audit (Phase 2) and policy — the trail isn't just a record, it feeds
-  future decisions. Non-sanction outcomes never escalate (verified: a clean post
-  that the count rule escalates stays `:escalate`, never `:ban`).
-- **Ext 6 — strictest-wins strategy, 204/204** (+14). A second decision strategy
-  alongside first-match: collect all proven rules and apply the harshest sanction.
-  Shows the substrate supports more than one precedence policy over the same rule
-  facts — `pl-query-all` for the full match set, severity ranking in SX. Verified
-  it diverges from first-match exactly when rule order and severity disagree.
-- **Ext 5 — policy lint, 190/190** (+14). Static analysis of the rule set itself,
-  catching the failure modes first-match precedence makes easy: dead rules after a
-  catch-all, missing catch-all (undecided reports), duplicate names. `mod/rules-ok?`
-  is a single well-formedness gate a policy author can assert in their own tests.
-- **Ext 4 — report linking / dedup, 176/176** (+12). Relational retrieval
-  (`related-ids`, `reporters-of`) reuses the Prolog substrate for *querying* report
-  clusters, not just deciding them — `report(Id, _, 'subject')` by unification.
-  Dedup is pure SX over a normalized link key. Own suite (`tests/link.sx`) — going
-  forward, new extensions get their own test file rather than growing
-  `extensions.sx`. With roadmap + 4 extensions the subsystem now spans schema →
-  policy DSL (6 condition types) → engine + proofs → audit → lifecycle →
-  federation → explanation → linking, all on the green `lib/prolog` substrate.
-- **Ext 3 — proof explanation, 164/164** (+10). `mod/explain` turns the Phase-2
-  proof tree into human-readable text — the audit trail's "why" made legible. Pure
-  SX over existing decision data; no engine change. Renders unification bindings
-  inline (`{B=ann, N=3, S=dave}`) so a moderator sees exactly which facts proved
-  the decision.
-- **Ext 2 — weighted/aggregate scoring, 154/154** (+8). `:signals` + the
-  `(:score-at-least N)` condition push aggregation into Prolog
-  (`aggregate_all(sum(W), …)`), so low-confidence signals can accumulate to a
-  takedown. The schema's report-rebuild helpers (`report*` / `with-*`) now thread
-  six fields; each addition stays non-breaking because empty collections project
-  to empty fact blocks. Default policy and its 132 tests untouched (proven via
-  custom rule sets).
-- **Ext 1 — negation-as-failure, 146/146** (+14). `:attr` and `:not` conditions
-  give the policy closed-world reasoning. The substrate's negation is a functor
-  (`not(Goal)`), not the ISO prefix `\+` operator (that doesn't parse here) —
-  noted for any future negation work. Kept the default rule set and its 132 tests
-  untouched by proving the feature through custom rule sets instead.
-- **Phase 4 complete — 132/132** (+26 fed). **Full roadmap done.** Federation:
-  cross-instance reports, decision sharing, advisory-by-default trust, revocation.
-  fed-sx is mocked behind `mod/fed-send!` (in-memory outbox) — the only seam a real
-  transport must replace. The hard rule is enforced: a peer's decision binds
-  locally only under `(mod/trusted? peer :mod)`; otherwise it is recorded as a
-  suggestion and never auto-applied. Revocation composes with the proof model from
-  Phase 2 — `mod/fed-revoke-if-invalidated` re-runs the *same* engine and undoes a
-  moderation only when the action it once proved no longer holds (an exoneration
-  evidence flips hide→keep, triggering revocation + an origin-bound revocation
-  message).
-  - **Liftable (acl-sx watch):** the trust registry (`grant`/`revoke`/`trusted?`
-    over `{:peer :scope}`) and the outbox/send! seam are generic federation
-    plumbing; candidates for `lib/guest/` if acl-sx grows a federation phase.
-- **Phase 3 complete — 106/106** (+46 escalation). Lifecycle state machine,
-  auto/human tiers, appeal-override, and an api façade. The state machine is a
-  pure SX module (`lib/mod/lifecycle.sx`) over the engine — policy stays in
-  Prolog, lifecycle stays out of it, per the design constraint. Cases are
-  immutable values threaded through transitions; illegal moves set `:error`
-  rather than throwing (the env's error handling is untested, so this keeps tests
-  deterministic). Tier logic: triage runs the engine, an `:escalate` action parks
-  the case at the human tier where `mod/case-resolve` is blocked until
-  `mod/case-review` supplies evidence. Appeal-override works because the new
-  `exonerated-keep` rule sits at top precedence — appeal evidence re-runs the same
-  engine and a higher-precedence clause wins. The api façade (`mod/triage` …
-  `mod/finalize`) keeps a per-report case registry and logs each committed
-  decision to the Phase-2 audit trail, so lifecycle + audit compose.
-  - **Gotcha:** `sx_insert_near` inserts only the FIRST top-level form of a
-    multi-form source — silently drops the rest (byte count barely changes). For
-    multi-form additions, rewrite the file with `sx_write_file`.
-- **Phase 2 complete — 60/60** (+29 audit). Evidence accumulation, constructive
-  proof trees, append-only audit log. A decision's `:proof :goals` is a real
-  derivation: each body goal is re-queried against the same Prolog DB with the
-  report id bound, so the count rule's proof carries `N=3, S=<subject>` straight
-  from unification — not a reconstruction. Evidence is asserted as
-  `evidence(Id, 'kind', 'val')`; the new `reviewer-remove` rule (placed first =
-  highest precedence) lets human review override automated classification.
-  `mod/decide` now commits each decision to the audit log with the evidence
-  snapshot in force at decision time. Unknown predicates in this Prolog fail
-  gracefully (verified) — so an evidence-less report safely falls through the
-  reviewer rule without an existence error.
-  - **Liftable (acl-sx watch):** the proof-tree builder (`mod/proof-goals` —
-    re-query-each-goal) and the append-only log shape are both generic. Both
-    subsystems are now past Phase 2; next time either touches plumbing, evaluate
-    lifting `proof-goals` + the audit-log primitives into `lib/guest/`.
-- **Phase 1 complete — 31/31.** Report schema, keyword classifier, policy DSL,
-  engine, registry api, conformance harness. Decisions are proofs: each carries
-  `:rule` (matching clause), `:proof {:rule :conditions :evidence :count}`.
-  Precedence is Prolog clause order resolved by `pl-query-one`; a trailing
-  `true`-bodied default rule makes "no rule matched" a real `:keep`, not a query
-  failure. Evidence (spam/abuse classification) derived in SX and asserted as
-  `classification/2` facts; repeated-report escalation uses a genuine Prolog
-  join + arithmetic (`report(Id,_,S), report_count(S,N), N >= 3`).
-  - **Gotcha (env):** loading the prolog libs strips `includes?` (and other
-    high-level string prims) from the eval env — only the set the prolog
-    tokenizer itself uses survives (`slice`, `len`, `nth`, `=`, `join`,
-    `downcase`, `map`, `reduce`, `append!`). Implemented `mod/str-contains?` over
-    `slice`/`len` rather than relying on `includes?`. Watch for this in later
-    phases — stick to the blessed primitive set.
-  - **Liftable (acl-sx watch):** `mod/join-with`, `mod/str-contains?`, `mod/any?`,
-    and the rule→clause compilation shape are generic rule-engine plumbing. Do not
-    extract to `lib/guest/` until both mod-sx and acl-sx are past Phase 2.
 
 ## Blockers
 
-(none)
+(loop fills this in)

plans/persist-on-sx.md

@@ -0,0 +1,119 @@
+# persist-on-sx: Durable state on the SX kernel
+
+> **DRAFT outline.** Foundation subsystem — the durable substrate the other five
+> currently fake with in-memory mutable lists. Build this first.
+>
+> **"persist" = persistence / data store, NOT the shop.** The shop/commerce vertical
+> is `commerce-on-sx`.
+
+rose-ash needs durable state: every subsystem (feed log, flow store, mod audit,
+search index, acl grants, sessions) today hand-rolls an in-memory structure that
+vanishes on restart. `persist-on-sx` is the one durable substrate they share. It
+lives directly on the SX kernel's IO-suspension primitives (`perform`/`cek-resume`
+— the third CEK phase) so a read/write `perform`s and the kernel persists at the
+boundary. Concrete storage backends are injected.
+
+## Does it cover ALL persistence? No — and on purpose.
+
+Event-sourcing-everything is a known trap (replay cost, event schema evolution,
+awkward ad-hoc queries, 5MB images in a log). So persist owns the **durable
+source-of-truth substrate**, exposed as **two facets over one backend protocol**,
+with two things explicitly delegated out:
+
+| Shape | Owner | Notes |
+|-------|-------|-------|
+| **Event streams** (append-only, history matters) | persist — **log facet** | feed activities, mod audit, order ledger, flow state, content edits |
+| **Current-state values** (KV / document, no history) | persist — **kv facet** | profiles, stock counts, config, session blobs; also where projections materialize |
+| **Snapshots / read models** (derived, queryable) | persist — projections → kv/log | rebuildable from the log; persisted so you don't replay to answer a query |
+| **Blobs / large objects** (images, media) | **delegated** → content-addressed store (artdag/IPFS already) | persist stores the *reference/CID*, never the bytes |
+| **Cache** (ephemeral, evictable) | **out of scope** | not persistence — different lifecycle (Redis-shaped) |
+| **Ad-hoc relational query** | the subsystem, over a projected read model | the log is bad at "all orders by X in March"; project into a queryable kv/SQL backend |
+
+So: persist is the **single durable substrate** for state that's either a stream of
+changes or a current value — but it does **not** force everything into an event
+log, it does **not** hold blobs (only their content-addressed refs), and it does
+**not** do caching. Those boundaries are the whole point of calling it a substrate
+rather than "the database."
+
+End-state: `log` (append/read streams) + `kv` (get/put/delete by key) facets, an
+injectable backend protocol (mem → file → Postgres → IPFS-ref), pure projections
+with incremental snapshots, optimistic concurrency, and a subscription hook so
+read models (feeds, indices, audit logs) update incrementally.
+
+## Status (rolling)
+
+`bash lib/persist/conformance.sh` → **0/0** (not yet started)
+
+## Ground rules
+
+- **Scope:** only `lib/persist/**` and `plans/persist-on-sx.md`. May **import** the
+  kernel's IO-suspension surface (`perform`, platform IO ops) — verify what's
+  exported first. Do not add host primitives; a missing durable IO op is a Blockers
+  entry (it belongs in `hosts/`, out of scope).
+- **Architecture:** an event is `{:stream :seq :type :at :data}`; the log is an
+  ordered append-only vector; a projection is `(fold step seed events)`; a kv value
+  is `(get/put/delete key)`. Both facets sit on one injected backend
+  `{:append :read :kv-get :kv-put :snapshot-read :snapshot-write}`. The in-memory
+  backend is the test default; real backends wire in unchanged.
+- **Determinism:** replay is pure — same log → same state, always. No clocks or
+  randomness inside projections; time lives on the event.
+- **Blobs:** store the content-address/CID and metadata; never the bytes. The blob
+  backend is a separate injected dependency.
+- **Commits:** one feature per commit. Progress log + tick boxes.
+
+## Architecture sketch
+
+```
+Command / write                         Read model / value
+  (append stream type data)               (project stream step seed)
+  (kv-put key value)                       (kv-get key)
+        │                                       ▲
+        ▼                                       │
+lib/persist/event.sx                    lib/persist/project.sx
+  — {:stream :seq :type :at :data}        — fold step seed; incremental from snapshot
+        │                                       ▲
+        ▼                                       │
+lib/persist/log.sx   lib/persist/kv.sx   lib/persist/snapshot.sx
+  — append/read       — get/put/delete    — checkpoint; replay = snapshot + tail
+  — optimistic seq    — current-state
+        │                  │                    ▲
+        └──────────────────┴── (perform → backend) ───┘
+                            │
+lib/persist/backend.sx              lib/persist/api.sx
+  — injected protocol                 — (persist/append) (persist/project)
+  — mem | file | pg | ipfs-ref        — (persist/kv-get/put) (persist/subscribe)
+        │
+        └── blobs → content-addressed store (artdag/IPFS), by reference only
+```
+
+## Phase 1 — Log + kv + in-memory backend
+- [ ] `event.sx` — event record, stream/seq helpers
+- [ ] `backend.sx` — injectable protocol + in-memory impl (log + kv)
+- [ ] `log.sx` — `append` (optimistic seq), `read`, `read-from`
+- [ ] `kv.sx` — `get`/`put`/`delete` current-state
+- [ ] `api.sx` + tests + scoreboard + conformance.sh
+
+## Phase 2 — Projections + subscriptions
+- [ ] `project.sx` — `(project stream step seed)`, incremental fold
+- [ ] subscription hook — projection / kv read model re-runs on append
+- [ ] concurrency conflict surfaced as a real result, not a crash
+
+## Phase 3 — Snapshots + replay
+- [ ] `snapshot.sx` — checkpoint a projection; replay = snapshot + tail
+- [ ] compaction policy; replay-determinism tests
+
+## Phase 4 — Durable backends via kernel IO
+- [ ] file/log backend driven through `perform` (IO-suspension boundary)
+- [ ] blob backend interface (store ref/CID; bytes live in artdag/IPFS)
+- [ ] crash/restart replay test (mock IO platform)
+- [ ] migration notes for swapping mem → durable under a live subsystem
+
+## Consumers (post-foundation, not in scope here)
+feed/-log, flow store, mod/audit, search index, acl grants, identity sessions all
+become `persist` log or kv. Track each migration in that subsystem's plan.
+
+## Progress log
+(loop fills this in)
+
+## Blockers
+(loop fills this in)

plans/rose-ash-on-sx-migration.md

@@ -0,0 +1,170 @@
+# Re-implementing rose-ash on SX — migration strategy
+
+Status: **strategy proposal** (drafted by the `radar` loop, 2026-06-07). Not a
+unilateral architecture decision — a starting point for the fleet to refine. Radar's
+role here is detection: the `*-on-sx` subsystems have converged into a host-agnostic
+re-implementation of rose-ash's domain logic, so this doc proposes *when* and *how* to
+wire them to production.
+
+---
+
+## 1. Premise: we are ~70% into a re-implementation already
+
+The fleet of `lib/<x>` SX subsystems is not a set of experiments — it is rose-ash's
+domain logic, re-expressed substrate-by-substrate, deliberately **host-agnostic**:
+
+| SX subsystem (`lib/`) | rose-ash production domain |
+|---|---|
+| content-on-sx (CRDT docs, versioning, `page.sx` HTML render) | **blog** |
+| commerce-on-sx (catalog, pricing, cart, order + refund sagas) | **market + cart + orders** |
+| events-on-sx (calendar, ticketing, booking) | **events** |
+| feed-on-sx (activity streams, AP-shaped, threading) | **federation** |
+| identity-on-sx (OAuth2, sessions, grants, membership) | **account** |
+| acl-on-sx (permissions) | cross-cutting authZ |
+| relations / likes | **relations / likes** (internal) |
+| persist-on-sx (log / kv / snapshot facets) | per-service Postgres layer |
+| flow-on-sx (durable sagas) | order/refund/delivery workflows |
+| mod-on-sx, search-on-sx | new capabilities |
+
+**The architectural enabler:** every core was built with *injected seams* — `permit?`,
+`send-fn`/`fetch-fn`, `transport`, `dispatch`, `backend`. That is ports-and-adapters
+(hexagonal) on purpose. Evidence from the radar backlog (`plans/abstractions.md`):
+W1 (7/7 federation modules inject the fed-sx transport), W4 (content/commerce/events run
+live on `persist/log`), W8 (events+commerce run sagas on `lib/flow`). **The cores do not
+depend on how they're hosted, persisted, or federated.**
+
+**Corollary that makes the whole migration tractable:** because logic is separated from
+rendering and storage, we can hold the **domain logic to parity** while **freely
+redesigning the presentation** — the two are different layers with different rules.
+
+---
+
+## 2. The gating insight: the cores are *ahead of the host*
+
+The domain logic is mature. What is *not* yet production-grade is the **host trio** — and
+that is the real critical path:
+
+- **host-on-sx** — HTTP / request-response / session host (briefing exists; the OCaml SX
+  HTTP server already serves `sx.rose-ash.com`).
+- **host-persist** — durable storage adapter (real disk/pg/ipfs) under `persist`'s
+  facets (content-addressed blob blocker recently closed).
+- **fed-sx** — the real ActivityPub transport every core injects (well into m2).
+
+> **So "when do we start?" answers itself: start when the host trio is production-grade,
+> not when the cores are done — they mostly already are.** Prioritise the host loops over
+> further domain features.
+
+---
+
+## 3. The model: duplicate → cut over → diverge (per slice)
+
+This is the "duplicate first, then change" approach, made precise. Each domain slice goes
+through three phases independently:
+
+**Phase A — Duplicate (hold logic to parity).** Stand the SX implementation of the slice
+up *in parallel*, behind the existing edge, serving no users yet. Get its **domain/data
+behaviour** to match Python (see §4 on how). Presentation can start as a rough port or an
+early new design — it doesn't have to match.
+
+**Phase B — Cut over (strangler flip).** Point the edge route for that slice at the SX
+host. Python stays as instant rollback. The slice is now live on SX.
+
+**Phase C — Diverge (change freely).** With the slice live and validated, evolve the
+look/feel and functionality on the SX side. The validated domain logic underneath is
+untouched, so UX/feature changes can't silently corrupt data.
+
+You never rewrite the whole platform at once; you walk slices through A→B→C, oldest tree
+strangled last.
+
+---
+
+## 4. The two techniques, and how "we'll change things" reshapes them
+
+### Strangler edge
+The edge (Caddy) is the front door every request hits. Add routing rules so **one route
+at a time** goes to the SX host while everything else still goes to Python. Properties:
+the site is never half-broken; any single route flips back to Python instantly; the old
+app is strangled route-by-route. (Opposite of big-bang swap, which is how these die.)
+
+### Shadow diff — split by layer
+Run the new version on real traffic in the background, discard its output, and **log how
+it differs** from Python. Flip the edge only when diffs are zero/intended.
+
+But because we *intend* to change look/feel + functionality, parity is a tool we apply
+**only where we want sameness**, not a straitjacket:
+
+| Layer | Want parity? | Oracle |
+|---|---|---|
+| **Domain/data** (totals, tax, permissions, what's stored, who-sees-what) | **YES — silent difference = data corruption** | shadow-diff at the *core* boundary; deterministic cores → replay real request logs through the harness and diff |
+| **Presentation/UX** (HTML, layout, look, feel, flows) | **NO — this is what we're changing** | manual QA + design review; this is the Phase-C divergence |
+
+Practical shape: shadow-diff hits the **domain core's output** (the computed order, the
+visible-activity set, the permission decision) — not the rendered HTML. The deterministic,
+harness-replayable cores are the single biggest advantage we have here; it's the same
+parity discipline that made the A1 conformance migration safe (one reference slice, hard
+parity gate, revert on mismatch).
+
+---
+
+## 5. Readiness gates (start the production migration when ALL hold)
+
+1. **Host trio production-grade** — host-on-sx (HTTP/session), host-persist (durable
+   adapter), fed-sx (AP transport) — each conformance-green.
+2. **Data-migration story exists** — a way to get existing production Postgres state into
+   `persist` event streams (event-source the current state, or dual-write during overlap).
+   This is the honest long-pole; it is *not* domain logic and nobody has built it yet.
+3. **One vertical slice proven end-to-end** at data-parity in production — the reference
+   migration, the way the conformance loop migrated one subsystem before the rest.
+
+---
+
+## 6. Sequencing
+
+1. **Host trio first** (critical path — it's behind the cores).
+2. **Build the strangler edge + shadow-diff harness** as first-class tooling: edge routing
+   rules + a dual-run logger that diffs *core outputs* (not HTML) and stores discrepancies.
+3. **First slice = lowest risk × highest readiness × cleanest data oracle.**
+   Recommended: **the blog read path (content-on-sx)** or **the feed read path**
+   — read-heavy, no money, CRDT/versioning + `page.sx` HTML already exist, and the data
+   oracle is clean. *Avoid cart/orders/payments first* (transactional + SumUp webhooks =
+   highest blast radius).
+4. **Persistence-first, federation-last.** Land host-persist + migrate per-domain event
+   stores before any cutover. Do fed-sx federation as a *coordinated* cut near the end —
+   W1 shows all 7 cores light up federation together once the shared transport ships.
+5. **Walk the remaining slices A→B→C**, retiring Python routes as each cuts over.
+
+---
+
+## 7. The honest long tail (mostly host + adapters, not cores)
+
+The cores are pure domain logic; the production *tail* is not in them yet and is most of
+the remaining real effort:
+
+- Auth: first-party cookies / Safari-ITP, CSRF, silent SSO, grant caching.
+- Cross-cutting: rate limiting, observability/metrics, error pages, caching.
+- Integrations: SumUp payment + webhooks, Ghost CMS sync.
+- Presentation: the actual HTMX templates + CSS (this is also where the redesign happens).
+- **Live data migration** — the single biggest non-core workstream.
+
+---
+
+## 8. Concrete next steps
+
+1. Treat the **host trio** as the fleet's critical path; prioritise over more domain features.
+2. Stand up the **strangler edge + core-level shadow-diff harness** as a tool.
+3. Prove **one slice** (blog/content read path) end-to-end in production as the reference.
+4. **Spec the Postgres → persist data migration** (the long-pole nobody has started).
+5. Then walk slices through duplicate → cut over → diverge, redesigning UX in Phase C.
+
+---
+
+## 9. Why this is low-risk despite being a platform rewrite
+
+- It's **wiring host-agnostic cores to a host**, not rewriting domain logic from scratch.
+- The **strangler edge** means the site always works and any route reverts in seconds.
+- **Deterministic cores** make data-parity *mechanically checkable* (replay + diff), so
+  correctness isn't a matter of faith.
+- **Logic/presentation separation** lets us change look/feel + functionality (Phase C)
+  *without* re-risking the validated domain logic.
+- It's the **same discipline that just shipped A1**: one reference migration, a hard
+  parity gate, honest exclusions, verify-before-merge.