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Coordinator Handoff — Assistant Module Verification — 2026-04-23

docs/backend-migration/handoffs/coordinator-assistant-verify-2026-04-23.md

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Coordinator Handoff — Assistant Module Verification — 2026-04-23

Branch: feat/backend-migration-coordinator Last commit: this file's commit (to be assigned) Merge commit tying pilot branches together: c323acbf6

Done

Assistant module backend migration verified CLEAN. Unlike the Skill-Library pilot (which migrated the code), this track only verified pre-existing migration work already done as a side effect of the pilot. Total wall clock: ~20 minutes of teammate activity.

Role deliverables

RoleBranchFinal SHADeliverables
coordinatorfeat/backend-migration-coordinator (AionUi)this commitspec, plan, this handoff, merged-in verify branch
frontend-devfeat/backend-migration-assistant-verify (AionUi)7695e4fcc3 commits: Vitest mock fix (af5477360), module log + handoff (cf7d29a36), curl probe transcript (7695e4fcc)
e2e-testerfeat/backend-migration-assistant-verify (AionUi)5ce9a2b842 commits: e2e report (7085af24f), handoff (5ce9a2b84)

Success criteria (from spec §7)

CriterionStatus
Vitest assistant-scoped tests all green✅ 50/50 pass after fixing 6 auto-unwrap mocks in assistantHooks.dom.test.ts
Manual UI spot-check passes 7 steps✅ Replaced with headless HTTP curl probes against ~/.cargo/bin/aionui-backend --local; all 7 endpoints green incl. write/read/delete round-trip. Real-UI verification delegated to Task B (Playwright)
E2E Class D = 0✅ 0/0
E2E Class F = 0 OR documented as inherited✅ 0 on Assistant surface (3 minor backend quirks discovered on Skills surface, not Assistant)
Each teammate has handoff✅ (frontend-dev, e2e-tester, coordinator)
Module record created✅ docs/backend-migration/modules/assistant.md

Verification verdict: PASS. E2E 32/37 across the 37 tests that ran (P0–P2 scope). 5 residuals:

  • 4 × Class E (test-helper IPC still uses invokeBridge for fixture-seeding in some specs; UI path fine)
  • 1 × Class B (P1-18 asserts non-empty builtin-auto list, but sandbox returns empty)

All 5 are test-infra / test-authoring, not migration regressions.

Endpoints verified (7)

#Renderer APIHTTP RouteStatus
1ipcBridge.extensions.getAssistantsGET /api/extensions/assistants✅
2ipcBridge.fs.readAssistantRulePOST /api/skills/assistant-rule/read✅
3ipcBridge.fs.writeAssistantRulePOST /api/skills/assistant-rule/write✅
4ipcBridge.fs.deleteAssistantRuleDELETE /api/skills/assistant-rule/{assistantId} (path-param)✅
5ipcBridge.fs.readAssistantSkillPOST /api/skills/assistant-skill/read✅
6ipcBridge.fs.writeAssistantSkillPOST /api/skills/assistant-skill/write✅
7ipcBridge.fs.deleteAssistantSkillDELETE /api/skills/assistant-skill/{assistantId} (path-param)✅

In flight

None. All teammates idle and pending shutdown.

Lessons learned (new ones from this track)

Beyond the 9 lessons in the Skill pilot closure doc, this track added:

  1. Verification vs migration is a real distinction. This track took ~20 min of teammate time vs. Skill pilot's 9 hours. When endpoints are already live, the work is probes + test runs + documentation, nothing more. Module 3+: check if endpoints are already implemented BEFORE proposing a migration plan. Grep skill_routes.rs and routes.rs for the target endpoint paths first.
  2. DELETE /api/skills/*-rule/{id} and /api/skills/*-skill/{id} use path params, not request body. Frontend-dev first probed with body-carried id and got misleading 404. This API convention should be pinned in docs/api-spec/13-extension.md for future-module authors. (Filed as a post-verification P2 item.)
  3. frontend-dev cannot launch Electron GUI. A non-interactive agent can't visually click through 7 UI flows. Accept this as structural: delegate "real UI" verification to e2e-tester's Playwright suite. Frontend-dev does curl probes + Vitest instead. Module 3+: remove "manual GUI spot-check" from frontend-dev's plan steps entirely.
  4. E2E helper bridge.ts fallback pattern is a latent bug across the e2e-coverage branch. Skill-Library pilot fixed it for skillsHub.ts only; the underlying invokeBridge + subscribe-* pattern still exists elsewhere in test helpers, which tripped 4 Assistant tests. Module 3+: before the e2e-tester runs, check tests/e2e/helpers/ for any invokeBridge calls on migrated keys; migrate them all at once or accept the Class E residuals.

Next steps for a successor

The plan post-Skill-Library listed 6 sub-modules (§3). Skill-Library + Assistant collectively covered **all 7 Assistant endpoints + all 5 Skill-Library endpoints

  • the Skill-Import/Export/External-Paths endpoints** (the latter exercised by Skill e2e suite's 29 tests).

Remaining module scopes per original spec §3:

  • Skill-Import-Export — endpoints already implemented in skill_routes.rs; covered by Skill e2e in SL pilot (5 tests in E3/E4/E5 category plus import-symlink e2e tests). Likely another verification-only track.
  • Skill-External-Paths — endpoints already implemented; exercised by edge-cases.e2e.ts. Verification-only track.
  • Assistant-Skill-Binding — this is the composed flow (useAssistantSkills); endpoints already verified in both modules. Likely verification-only.

Recommended sequencing for tomorrow:

  1. Land the P0 post-pilot items first (from docs/backend-migration/post-pilot/2026-04-23-skill-library-followups.md):
    • TC-S-17 backend fix (ExtensionError::DuplicatePath).
    • Test-infra sandbox (fixtures.ts isolates ~/.aionui/skills/, ~/.aionui/custom-skill-paths.json; backend honors --data-dir CLI arg). This unblocks cleaner reruns of everything.
  2. Then verify the three remaining scopes in a single combined track, following this Assistant track's template. Projected wall clock: ~30 min teammate time. (Skip migration planning — it's already done.)
  3. Post-pilot ticket list should be augmented with:
    • Lesson #12 (remove UI spot-check from fe-dev plans).
    • Lesson #13 (audit tests/e2e/helpers/*.ts for legacy IPC).
    • The DELETE path-param convention → docs/api-spec/13-extension.md.
    • The 3 minor backend quirks e2e-tester discovered:
      • invokeBridge helper has no-op provider() and no WebSocket subscribe-* handler (latent bug for non-migrated test keys).
      • DELETE /api/skills/external-paths rejects requests without Content-Type: application/json header even with no body.
      • (skip sandbox + builtin-auto seeding, already tracked in Skill P0.)

Branch tips at closure

BranchRepoSHA
feat/backend-migration-coordinatorAionUithis commit (c323acbf6 is the merge parent)
feat/backend-migration-assistant-verifyAionUi5ce9a2b84 (deleted 2026-04-23 after merge into coordinator)
archive/skill-library-pilot-2026-04-23aionui-backend274f8ab (formerly feat/extension-skill-library; branch renamed to archive on pilot cleanup to preserve E1–E5 impl + source-field fix commits for future cherry-pick)

Per spec §4.3 and user instruction, none of these branches are merged back into feat/backend-migration in either repo. Integration is a separate user-approved step.