psf-memo-client/docs/reviews/post-memo-summary.md

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.