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fed-sx-m1: Step 3a — in-memory log:open/append/tip/replay + 12 tests
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giles
2026-05-27 07:06:40 +00:00
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plans/fed-sx-milestone-1.md
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@@ -195,6 +195,11 @@ verify_signature(Activity, ActorState) ->
## Step 3 — JSONL log + sequence numbers
**Sub-deliverables:**
- [x] **3a** — `log:open/2` + `log:append/2` + `log:tip/1` + `log:replay/3` + `log:entries/1` over an in-memory log state (per-actor seq; replay in append order; round-trip the stored activity). `next/tests/log_memory.sh` (12 cases).
- [ ] **3b** — Term codec + on-disk persistence: serializer/parser writing each activity as a JSONL-style line; restart-resumes-tip from the segment file. Blocker risk: `atom_to_list`/`integer_to_list` return SX strings (not Erlang charlists) and there is no `binary_to_list`, so a term-to-binary path needs a workaround.
- [ ] **3c** — Segment rotation at size threshold + gen_server-mediated concurrent appends.
**Deliverables:**
```erlang
@@ -937,6 +942,7 @@ A few things still under-specified; resolve as work begins.
Newest first. One line per sub-deliverable commit. Erlang conformance gate
(`bash lib/erlang/conformance.sh`) must remain 729/729 on every entry.
- **2026-05-27** — Step 3a: `log:open/2 append/2 tip/1 replay/3 entries/1` over an in-memory state (per-actor seq, replay in append order, round-trip activities). `next/tests/log_memory.sh` 12/12. Pivoted from on-disk in this iteration: this port's `atom_to_list`/`integer_to_list` return SX strings rather than Erlang charlists, `binary_to_list` is unregistered, and `$X` char literals decode to nil — so a term codec needs a workaround. Captured as the Step 3b risk note in the plan. Erlang conformance 729/729.
- **2026-05-26** — Step 2c: `envelope:verify_signature/2` — time-aware key lookup over `public_keys` (created ≤ published < superseded_at), MAC recompute via `crypto:hash(sha256, KeyMaterial ++ canonical_bytes)`, compared against `signature.value`. Returns ok or one of `no_signature | no_key_id | no_published | no_keys | no_active_key | bad_signature`. `next/tests/envelope_sig.sh` 11/11 pass. Erlang conformance 729/729.
- **2026-05-26** — Step 2b: `envelope:canonical_bytes/1` — strip signature, insertion-sort property list by key, return host-CID-string as deterministic byte form (dag-cbor stand-in). `next/tests/envelope_canonical.sh` 8/8 pass. Erlang conformance 729/729 preserved.
- **2026-05-26** — Step 2a: `next/kernel/envelope.erl` `validate_shape/1` + `get_field/2` over property-list envelopes (Erlang `#{}` maps not supported in this port). `next/tests/envelope_shape.sh` 15/15 pass. Erlang conformance 729/729 preserved.