# Architectural Review Summary — post-memo

## Task and commits reviewed
- Task: `post-memo`
- Reviewed the merged branch ending at `8e2693ad08` (refactorer), which carried:
  - `d071b21`/`c9556be` — specifier Post-a-Memo Gherkin spec + feature backlog
  - `514298b` — coder implementation with acceptance pipeline
  - `64a7f78` — refactorer merge of coder work
  - `8e2693a` — refactorer memo-post complexity reduction
- Merged into `swarmforge-architect` (fast-forward) and processed as a batch.

## Architectural findings and fixes applied
Reviewed UI/Core separation, dependency rule, information hiding/encapsulation, and
local code quality.

1. **Testable core behind small adapters (good).** `src/services/memo-post.js` is a
   testable module free of UI/IO concerns. It injects `wallet` and `feed` adapters
   (minimal-slp-wallet surface + feed reflection), so OP_RETURN/broadcast and UI
   concerns stay outside the core. Environmentally unsuitable I/O is confined to
   adapter boundaries. Dependency direction is inward.
2. **Acceptance pipeline separation (good).** `acceptance/lib/{generate,runtime,handlers}`
   are the project-specific components the APS spec prescribes. The feature is parsed
   by the **APS-supplied Babashka `gherkin-parser`** (procured fresh from
   github.com/unclebob/Acceptance-Pipeline-Specification on first use), not
   reimplemented. `handlers.js` drives real core behavior through fake wallet/feed
   adapters so the run is deterministic and offline.
3. **Information hiding (good).** memo-post hides the Memo `0x6d02` prefix and
   broadcast mechanics; handlers only assert observable outcomes (broadcast prefix,
   feed reflection, empty/length rejection).
4. **Fix applied — runner adapter added.** Built the project-specific persistent
   runner adapter required by `gherkin-mutator` at
   `acceptance/lib/runner-worker.js` (newline-delimited JSON protocol; evaluates each
   mutated feature IR through the same runtime/handlers and reports
   `test_failure|test_success|infrastructure_error`).
5. **Manifests updated by tools (permitted).** The language mutation tool embedded
   its differential footer manifest in `src/services/memo-post.js`; the APS mutator
   wrote the acceptance-mutation scenario manifest into `specs/post-memo.feature`.
   Both are normal tool output and were left for the tooling, not hand-edited.

## Verification results
- **Unit (`node --test`):** 7/7 pass (`memo-post.test.js`).
- **Acceptance (normal):** all 6 scenario executions pass.
- **Mutation (`mutate4javascript` differential, `--max-workers 8`):**
  `memo-post.js` — **killed 7, survived 0, uncovered 0**. Full kill.
- **DRY (`dry4javascript src`):** no duplicate candidates.
- **Gherkin acceptance mutation (soft):** 6 discovered; **1 killed**, **5 survived**,
  0 errors.
  - Killed: the empty-memo boundary — dithering the `"  "` example makes the
    validation branch fail the scenario, confirming the empty-rejection guardrail is
    connected to the example data.
  - Survived (documented equivalents): message-content dithers in the valid-memo
    scenario and the over-long scenarios. The tests treat the message as opaque data
    and assert the *same* (mutated) text is composed and reflected, so changing one
    character leaves the exercised branch identical. These are acceptable equivalent
    survivors, not missing guardrails.
- **Property tests:** none present in this project.

## Suite status
- Unit + acceptance suites pass; mutation fully kills source-level mutants for the
  testable core. Gherkin acceptance mutation has 5 documented-equivalent survivors.

## Handoffs sent
- `git_handoff` → coder, refactorer (priority `00`, task `post-memo`), to review the
  architectural commit (runner adapter + tool manifests).

By architect.