# Implementation Report — Admin Class Edit (Cycle 4)

**Date**: 2026-05-13
**Cycle**: 4 (autodev existing-code Step 10 → Step 17 loop)
**Epic**: AZ-509 (Phase B cycle 3 carry-over — UI workspace cycle 3 deliverables; AZ-512 was the cycle 3 deferred task brought into cycle 4 under user-authorized Option B)
**Tasks**: [AZ-512]
**Batches**: 1 (batch_16_cycle4)
**Outcome**: PASS — single-task cycle, all ACs covered, full test suite green, all static gates green.

## Summary

Cycle 4 was entered as a small surgical cycle to **reactivate AZ-512** — the "edit existing detection class" affordance that was deferred to backlog at the end of cycle 3 because the `admin/` sibling service does not expose the underlying CRUD routes for detection classes.

At cycle 4 entry the user explicitly chose Option B from the original AZ-512 Cross-Workspace Verification gate: implement the UI inline edit form against MSW-stubbed PATCH semantics while AZ-513 ships in parallel on the admin/ workspace. The UI is therefore complete and tested today; the live deploy gate (Step 16) holds until AZ-513 lands on admin/ and that build deploys to whichever environments the UI is promoted into.

## Tasks Delivered

| Task | Name | Complexity | Status |
|------|------|-----------|--------|
| AZ-512 | Admin — edit existing detection class (inline form + PATCH wiring) | 3 | Done (MSW-stubbed; live wire shape gates at Step 16 on AZ-513) |

**Total complexity delivered**: 3 points.

## Acceptance Criteria Status

8 of 8 ACs covered. See `batch_16_cycle4_report.md` for the per-AC test mapping. Highlights:

- AC-1, AC-2 — edit affordance + single-row invariant verified.
- AC-3 — Save (button + Enter) sends exactly one PATCH with the full editable body (Risk 2 mitigation: full body always sent so backend partial-merge vs full-replace semantics are equivalent for the UI).
- AC-4 — Cancel (button + Escape) emits zero network requests.
- AC-5 — empty name AND non-positive `maxSizeM` both block the PATCH and surface inline `role="alert"` errors.
- AC-6 — 500 response keeps the form open, surfaces an inline error, leaves the user's draft intact, and confirms `window.alert` is NOT called.
- AC-7 — static FT-P-22 i18n parity gate PASS; six new `admin.classes.*` keys exist in both `en.json` and `ua.json`.
- AC-8 — regression guards for the existing Add and Delete affordances both pass.

## Quality Gates

| Gate | Result | Notes |
|------|--------|-------|
| Full vitest suite | PASS — 32 files, 243 tests, 13 quarantined skips | `bun run test` |
| `scripts/run-tests.sh --static-only` | PASS — all 35 static checks | i18n parity + coverage, arch imports, api literals, banned-deps (incl. STC-SEC1B/C/D), destructive UX surface registry, performance regex, etc. |
| ReadLints on touched files | PASS — no introduced lint errors | `AdminPage.tsx`, MSW handler, test file, doc |
| File ownership envelope | PASS — only `08_admin` OWNED files + spec-authorized exceptions (i18n bundles, tests, admin description doc) | |
| AZ-512 Cross-Workspace Verification | DEFERRED — Option B path active (MSW-stubbed) | Live deploy gates at Step 16 on AZ-513 |

## Product Implementation Completeness Gate (Step 15)

| Task | Verdict | Evidence |
|------|---------|----------|
| AZ-512 | **PASS** | Task promises are UI-only and are implemented in production source (`src/features/admin/AdminPage.tsx`). No named external runtime dependency beyond the existing `api.patch()` helper. No unresolved placeholder/stub/TODO/scaffold markers in the touched files. The "cross-workspace prerequisite" is an external system (admin/ workspace) explicitly out-of-scope-from-the-UI per the task spec; the leftover entry tracks it and the Step 16 gate enforces it. No remediation tasks created. |

Final implementation report can therefore be written here (this file) without further gate-driven loops.

## Handoff to Test Run (Step 11)

The full vitest suite was already run during batch verification and passed cleanly. Per `implement` skill Step 16:

> If the next flow step is `Run Tests`, record a handoff in the final implementation report and let `.cursor/skills/test-run/SKILL.md` own the full-suite gate to avoid duplicate full runs.

Step 11 (Run Tests) is the next autodev step. The test-run skill should pick up here and run its own formal gate; the result of my pre-flight run is purely advisory.

## Discovered pre-existing bug (NOT fixed this batch)

`tests/msw/handlers/admin.ts:39` returns `paginate(seedUsers)` for `GET /api/admin/users`, but `AdminPage.tsx:19` consumes the response as a flat `User[]`. The mismatch is silently caught at the fetch layer but surfaces as a `users.map is not a function` render crash when the response is bound to state. The destructive-ux test fixture documents the same drift and overrides the handler with a flat array; my new test file uses the same workaround.

This is logged for the user to triage as a separate UI-workspace ticket — fixing it requires deciding which side (handler shape vs UI consumption) reflects the live admin/ service's behavior, and that determination belongs to the admin/-side conversation, not this batch's scope.

## Cross-workspace coordination point

When **AZ-513** ships on the `admin/` workspace AND that build is deployed to the environments the UI is promoted into:

1. The Step 16 (Deploy) gate in this cycle (or any future cycle re-running it) un-blocks for AZ-512 prod cutover.
2. The existing pre-existing-broken Add and Delete affordances on `AdminPage` ALSO start working end-to-end against the live service for free.
3. The leftover record at `_docs/_process_leftovers/2026-05-13_az-512-admin-classes-prereq.md` becomes deletable.
4. The Step 16 leftovers-replay step should additionally verify the admin/-side `GET /api/admin/users` response shape and, depending on outcome, file the separate UI-workspace ticket flagged above.

## Cycle 4 metrics snapshot

| Metric | Value | Δ vs cycle 3 |
|--------|-------|--------------|
| Tasks attempted | 1 (AZ-512) | −2 |
| Tasks delivered | 1 | −1 |
| Tasks deferred at spec gate | 0 (deferred-at-gate pattern resolved via user Option B authorization) | −1 |
| Total batches | 1 | −2 |
| Total complexity points planned | 3 | −6 |
| Total complexity points delivered | 3 | −3 |
| Source files mutated | 2 production + 2 test + 2 doc/i18n + 1 test-infra = ~7 | n/a (single-task shape) |

## Files Reference

- `src/features/admin/AdminPage.tsx` — inline edit affordance.
- `src/i18n/en.json`, `src/i18n/ua.json` — `admin.classes` flat → nested with 6 new keys.
- `tests/msw/handlers/admin.ts` — PATCH partial-merge handler.
- `tests/admin_class_edit.test.tsx` — 12 tests covering AC-1..AC-6 + AC-8.
- `tests/destructive_ux.test.tsx` — adjacent-hygiene selector tightening for the existing class-delete `it.fails()` and `control` tests (my ✎ button moved the first-button position).
- `_docs/02_document/components/08_admin/description.md` — recorded edit affordance + PATCH wiring.
- `_docs/03_implementation/batch_16_cycle4_report.md` — per-batch detail.
