fed-sx-m2: Step 2a — Person/Service/Group genesis object-types

Three new DefineObject artefacts in next/genesis/object-types/ for
the canonical actor object-types per design §9.1:

- Person: human-controlled identity (display name + handle + bio)
- Service: automated / programmatic actor (bot, feed, organisation)
- Group: multi-controller actor (member-set managed via Add/Remove)

Each is a small SX form with :name / :doc / :schema, identical
shape to existing object-types (note.sx, sx-artifact.sx etc) so the
existing bootstrap:populate_registry walk picks them up without
code changes. Manifest extended (object-types: 10 -> 13, total
entries: 31 -> 34).

Tests:
- genesis_parse.sh +7 cases (head form, :name, manifest membership);
  57/57.
- Hardcoded counts bumped in bootstrap_read.sh, bootstrap_load.sh,
  bootstrap_populate.sh, bootstrap_start.sh.
- bootstrap_build.sh 12/12 (bundle CID computed dynamically).

Conformance 761/761 preserved. 211/211 across 12 Step-2-adjacent
suites.

next/genesis/manifest.sx

@@ -24,6 +24,9 @@
   :object-types ("object-types/sx-artifact.sx"
     "object-types/note.sx"
     "object-types/tombstone.sx"
+    "object-types/person.sx"
+    "object-types/service.sx"
+    "object-types/group.sx"
     "object-types/define-activity.sx"
     "object-types/define-object.sx"
     "object-types/define-projection.sx"

next/genesis/object-types/group.sx

@@ -0,0 +1,11 @@
+;; next/genesis/object-types/group.sx
+;;
+;; Per design §9.1: a Group is a multi-controller actor — typically
+;; a working group, channel, or collective whose membership is
+;; managed via Add/Remove activities. Sig-suite validation honours
+;; the current key-set rather than a single keypair.
+
+(DefineObject
+  :name "Group"
+  :doc "Multi-controller actor. :name is the group's display name; :preferredUsername is the local handle; :summary is the description; :icon is a CID or URL; :members is the current member list (managed via Add/Remove)."
+  :schema (fn (obj) (string? (-> obj :name))))

next/genesis/object-types/person.sx

@@ -0,0 +1,11 @@
+;; next/genesis/object-types/person.sx
+;;
+;; Per design §9.1: a Person is the canonical actor type for a
+;; human-controlled identity. Bootstrapped via Create{Person{...}}
+;; as the actor's first activity (see nx_kernel:bootstrap_actor/4).
+;; ActivityPub-Person-compatible.
+
+(DefineObject
+  :name "Person"
+  :doc "Human-controlled actor. :name is the display name; :preferredUsername is the local handle; :summary is the profile bio; :icon is a CID or URL."
+  :schema (fn (obj) (string? (-> obj :name))))

next/genesis/object-types/service.sx

@@ -0,0 +1,11 @@
+;; next/genesis/object-types/service.sx
+;;
+;; Per design §9.1: a Service is a non-human actor — a bot, an
+;; automated feed, an organisational publisher. Same activity
+;; surface as Person, different ActivityPub Actor type. Tooling
+;; treats a Service identically to a Person except for UX hints.
+
+(DefineObject
+  :name "Service"
+  :doc "Automated / programmatic actor. :name is the display name; :preferredUsername is the local handle; :summary is the profile bio; :icon is a CID or URL."
+  :schema (fn (obj) (string? (-> obj :name))))

next/tests/bootstrap_load.sh

@@ -107,7 +107,7 @@ check 11  "strip suffix hello unchanged"        "true"
 check 12  "strip suffix .sx -> empty"           "true"
 check 13  "load_genesis rejects bad shape"      "ok"
 check 20  "loaded activity_types count = 3"     "3"
-check 21  "loaded object_types count = 10"      "10"
+check 21  "loaded object_types count = 13"      "13"
 check 22  "loaded projections count = 7"        "7"
 check 23  "loaded validators count = 3"         "3"
 check 24  "loaded codecs count = 3"             "3"

next/tests/bootstrap_populate.sh

@@ -99,9 +99,9 @@ check() {
 check  2  "gen_server loaded"                "gen_server"
 check  3  "registry loaded"                  "registry"
 check  4  "bootstrap loaded"                 "bootstrap"
-check 10  "populate returns total 31"        "31"
+check 10  "populate returns total 34"        "34"
 check 20  "activity_types count = 3"         "3"
-check 21  "object_types count = 10"          "10"
+check 21  "object_types count = 13"          "13"
 check 22  "projections count = 7"            "7"
 check 23  "validators count = 3"             "3"
 check 24  "codecs count = 3"                 "3"

next/tests/bootstrap_read.sh

@@ -103,7 +103,7 @@ check 11  "ends_with_sx create.sx"          "true"
 check 12  "ends_with_sx hello"              "false"
 check 13  "ends_with_sx empty"              "false"
 check 20  "section activity_types count"    "3"
-check 21  "section object_types count"      "10"
+check 21  "section object_types count"      "13"
 check 22  "section projections count"       "7"
 check 23  "section validators count"        "3"
 check 24  "section codecs count"            "3"

next/tests/bootstrap_start.sh

@@ -116,9 +116,9 @@ check() {
 check 10  "bootstrap module loaded"           "bootstrap"
 check 20  "whereis(nx_kernel) is Pid"         "true"
 check 21  "activity_types count = 3"          "3"
-check 22  "object_types count = 10"           "10"
+check 22  "object_types count = 13"           "13"
 check 23  "projections count = 7"             "7"
-check 24  "total entries = 31"                "31"
+check 24  "total entries = 34"                "34"
 check 25  "fresh log_tip = 0"                 "0"
 check 26  "publish advances tip to 1"         "1"
 check 27  "actor_id = alice"                  "true"

next/tests/genesis_parse.sh

@@ -64,6 +64,20 @@ cat > "$TMPFILE" <<'EPOCHS'
 (eval "(get (apply dict (rest (parse (file-read \"next/genesis/object-types/define-sig-suite.sx\")))) :name)")
 (epoch 40)
 (eval "(get (apply dict (rest (parse (file-read \"next/genesis/object-types/snapshot.sx\")))) :name)")
+(epoch 42)
+(eval "(first (parse (file-read \"next/genesis/object-types/person.sx\")))")
+(epoch 43)
+(eval "(get (apply dict (rest (parse (file-read \"next/genesis/object-types/person.sx\")))) :name)")
+(epoch 44)
+(eval "(first (parse (file-read \"next/genesis/object-types/service.sx\")))")
+(epoch 45)
+(eval "(get (apply dict (rest (parse (file-read \"next/genesis/object-types/service.sx\")))) :name)")
+(epoch 46)
+(eval "(first (parse (file-read \"next/genesis/object-types/group.sx\")))")
+(epoch 47)
+(eval "(get (apply dict (rest (parse (file-read \"next/genesis/object-types/group.sx\")))) :name)")
+(epoch 48)
+(eval "(some (fn (p) (= p \"object-types/person.sx\")) (get (apply dict (rest (parse (file-read \"next/genesis/manifest.sx\")))) :object-types))")
 (epoch 41)
 (eval "(len (get (apply dict (rest (parse (file-read \"next/genesis/manifest.sx\")))) :object-types))")
 (epoch 50)
@@ -166,7 +180,14 @@ check 37 "define-validator.sx name"     "DefineValidator"
 check 38 "define-codec.sx name"         "DefineCodec"
 check 39 "define-sig-suite.sx name"     "DefineSigSuite"
 check 40 "snapshot.sx name"             "Snapshot"
-check 41 "manifest has 10 object-types" "10"
+check 42 "person.sx head form"          "DefineObject"
+check 43 "person.sx name"               "Person"
+check 44 "service.sx head form"         "DefineObject"
+check 45 "service.sx name"              "Service"
+check 46 "group.sx head form"           "DefineObject"
+check 47 "group.sx name"                "Group"
+check 48 "manifest lists person.sx"     "true"
+check 41 "manifest has 13 object-types" "13"
 check 50 "activity-log.sx head form"    "DefineProjection"
 check 51 "activity-log.sx name"         "activity-log"
 check 52 "by-type.sx name"              "by-type"

plans/fed-sx-milestone-2.md

@@ -158,21 +158,32 @@ publicKey rotation history, profile fields, follower counts, etc.
 
 **Deliverables:**
 
-- Genesis additions: `DefineObject{Person}` / `DefineObject{Service}` /
-  `DefineObject{Group}` — three object-type SX files.
-- Actor-state projection fold (Erlang-fun stand-in, mirrors Step 5d-pure):
-  - On `Create{Person|Service|Group}`: register the actor's profile.
-  - On `Update{Person, patch}`: apply patch.
+- [x] **2a** — Genesis additions: `DefineObject{Person}` /
+  `DefineObject{Service}` / `DefineObject{Group}` — three new SX
+  files in `next/genesis/object-types/` plus manifest entries (now
+  13 object-types total, 34 total genesis entries). Each defines
+  `:name`, `:doc`, `:schema (fn (obj) (string? (-> obj :name)))`.
+  `next/tests/genesis_parse.sh` extended +7 cases (head form +
+  :name + manifest membership), now 57/57. Bootstrap suite
+  count assertions bumped (`bootstrap_read.sh` 15/15,
+  `bootstrap_load.sh` 15/15, `bootstrap_populate.sh` 14/14,
+  `bootstrap_start.sh` 10/10). `bootstrap_build.sh` 12/12 picks
+  up the new bundle CID dynamically.
+- [ ] **2b** — Actor-state projection fold (Erlang-fun stand-in,
+  mirrors Step 5d-pure's `define_registry`):
+  - On `Create{Person|Service|Group}`: register the actor's profile
+    in `{ActorId => #{type, name, preferredUsername, summary, icon,
+    public_keys, created}}`.
+  - On `Update{Person|Service|Group, patch}`: deep-merge the patch.
   - On `Move`: record `:movedTo` pointer.
-- `nx_kernel:bootstrap_actor/4(ActorId, Profile, KeySpec, State)` —
-  publishes `Create{Person{...}}` as the actor's first activity,
-  bootstrapping their own log.
-
-**Tests:**
-
-- `Create{Person}` registers the actor.
-- Two actors created via lifecycle activities have independent state.
-- Profile updates apply.
+  - `next/kernel/actor_state.erl` with `fold_fn/0` plugging into
+    `projection:start_link/3`. Pure-functional + gen_server-bridged
+    tests as a single `actor_state_pure.sh`.
+- [ ] **2c** — `nx_kernel:bootstrap_actor/4(ActorId, Profile,
+  KeySpec, State)` — publishes `Create{Person{...}}` as the actor's
+  first activity, exercising the full pipeline. Integration test
+  in `actor_lifecycle.sh` ties 2a artefacts (SX files), 2b
+  projection, and 2c bootstrap together.
 
 **Acceptance:** `bash next/tests/actor_lifecycle.sh` passes 10+ cases.
 
@@ -680,6 +691,17 @@ proceed.
 
 Newest first.
 
+- **2026-06-06** — Step 2a: genesis Person/Service/Group object-
+  types. Three new SX files in `next/genesis/object-types/` with
+  the same shape as `note.sx` / `sx-artifact.sx` (`:name`, `:doc`,
+  `:schema` checking `(string? (-> obj :name))`). Manifest extended
+  to 13 object-types / 34 total entries. `genesis_parse.sh` +7
+  cases (57/57). Hardcoded counts bumped in `bootstrap_read.sh`,
+  `bootstrap_load.sh`, `bootstrap_populate.sh`, `bootstrap_start.sh`
+  (66/66 across those four). `bootstrap_build.sh` 12/12 (bundle CID
+  computed dynamically). Conformance 761/761 preserved. 211 / 211
+  across 12 Step-2-adjacent suites.
+
 - **2026-06-06** — Step 1b: gen_server multi-actor calls.
   `nx_kernel` exports `add_actor/3`, `publish_to/2`, `log_tip_for/1`,
   `actors/0`, `state_for/1`, `bucket_for/1`,