[CLAUDE] Docs: S52 closeout — Phase 11 D+E+F deployed + database-agent + session-limit recovery

STATUS/HANDOFF S52 (Phase 11 product COMPLETE, test 200, Mig 46, roster 11, bundle DYfjnpY0/_3S0BPJ2). Session log. Proxy-append implementer-backend + test-specialist diaries (Wave 2 agent killed by session-limit truoc MEMORY step).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.claude/agent-memory/test-specialist/MEMORY.md

@@ -53,6 +53,8 @@ Test theo CODE (single source truth), document mismatch header comment + report.
 
 ## 📅 Recent activity (last 10 FIFO)
 
+- **2026-06-08 (S52 P11-D Wave2 round-robin + SLA-due) [proxy by em main: agent killed session-limit trước MEMORY step]:** +9 test `ItTicketAssignSlaTests.cs` → **200 PASS** (Infra 133→142). **Round-robin:** seed Department Code="IT" + 2 user A/B `IsActive` trong IT + A có 1 ticket Open → Create → assign **B** (load 0<1); tie A=B → `ThenBy(Id)`; edge no-dept-IT / no-user-IT → unassigned; user ngoài IT hoặc `IsActive=false` KHÔNG assign. **SLA-due:** Priority Urgent→+4h / High→+8h / Medium→+24h / Low→+72h (assert `e.SlaDueAt==CreatedAt+SlaWindow[priority]`). **Regression P11-F:** create vẫn gen `^IT/\d{4}/\d{3}$`. `ItTicketSlaJob` BackgroundService SKIP unit-test (breach-query inline, khó test trực tiếp — REPORTED). Baseline 191→**200** (58 Domain + 142 Infra). Tag [s52, p11-d, round-robin, sla-due, regression].
+
 - **2026-06-08 (S52 P11-E + P11-F WorkflowApps/Attendance test-after):** +5 test → **191 PASS** (Infra 128→133). 2 file `tests/.../Application/`: **ItTicketCodeGenTests** (3 — MaTicket regex `^IT/\d{4}/\d{3}$` + sequential 001→002 cùng prefix `IT/{year}` LastSeq++ + per-year-prefix 2027 reset 001) + **AttendanceReportTests** (2 — full aggregate day-type/weighted + DepartmentId filter). **⭐ Serializable-on-SQLite GOTCHA = NON-ISSUE (confirmed):** `WorkflowAppCodeGen.GenerateMaDonTuAsync` dùng `BeginTransactionAsync(IsolationLevel.Serializable)` chạy SẠCH trên SQLite — provider map isolation level gracefully (no throw), format+seq+per-year đều hold KHÔNG cần try/skip. Đã proven sẵn bởi WorkflowAppApproveV2Tests (DT/LR path). Handler `CreateItTicketHandler(db, cu, clock)` = 3 dep MediatR. **Day-type test pattern (P11-E core):** holiday check chạy TRƯỚC weekend/weekday → seed 2026-06-01 (thứ Hai) vào holidaySet → assert phân **Holiday** dù là weekday (override day-of-week). Holiday.Date=DateOnly → `BuildHoliday` dùng `DateOnly.FromDateTime`. OtWeighted = 2×1.5+3×2.0+1×3.0=12.0m. DepartmentId filter: seed 2 Department row + 2 user khác dept → query deptA chỉ trả 1 row (handler join Users `u.DepartmentId==deptId`, userMeta dùng `DefaultIfEmpty` nên dept row optional nhưng seed cho DepartmentName assert). No prod bug. **⚠️ MSBuild OOM** chạy full parallel → dùng `-maxcpucount:1 -p:BuildInParallel=false` (env resource, KHÔNG test fail). Tag [s52, p11-e, p11-f, codegen, day-type, serializable-sqlite-ok, test-after].
 - **2026-06-08 (S51 P11-C HMW Wave2 filtered-unique gotcha #57):** +4 test `tests/.../Application/HrmConfigFilteredUniqueTests.cs` → **185 total = 183 PASS + 2 RED** (Infra 123→127). Mirror HolidayTests Case 7 (seed soft-deleted Code-slot → Create same Code → assert success + active==1 + all==2). **2 GREEN** Vehicle+Driver (Mig 44 config ĐÃ filtered → 2 catalog mới đúng). **2 RED INTENTIONAL = gotcha #57 REPRODUCED** (test-before): `CreateLeaveType_OnSoftDeletedCodeSlot...` → `SQLite Error 19 UNIQUE constraint failed: LeaveTypes.Code` + `CreateShift_OnSoftDeletedCodeSlot...` → `ShiftPatterns.Code` (bare `.IsUnique()` đếm cả row soft-deleted; handler app-check `!IsDeleted` PASS → Add+SaveChanges → DbUpdateException). NOT test lỗi — REPORTED em main fix Mig 45 `.HasFilter("[IsDeleted]=0")` cho 2 config → flip GREEN. **⚠️ Soft-delete trong test (giống Holiday):** AuditingInterceptor (prod soft-delete Deleted→Modified+IsDeleted=true) KHÔNG wire trong SqliteDbFixture → `Remove+SaveChanges` = HARD delete (không test được). PHẢI seed row `IsDeleted=true` thủ công để mô phỏng slot bị chiếm. Handlers chỉ cần IApplicationDbContext → `new CreateXxxHandler(db)`. Tag [s51, p11-c, gotcha-57, filtered-unique, test-before].
 - **2026-05-30 (S42 P11-A Wave4):** +11 test `tests/.../Application/WorkflowAppApproveV2Tests.cs` → **141 PASS** (Infra 72→83). LeaveRequest 8 case full (Submit happy/guard×2, Approve advance/terminal/UPSERT-invariant/forbidden/empty-comment-placeholder, Reject→TuChoi, Return→TraLai+RejectedFromStatus) + OtRequest smoke (submit→approve single-level→DaDuyet). **No prod bug** — LeaveOt ApproveV2 wire correct, all PASS first run. **NEW Pattern:** WorkflowApps handlers = CQRS MediatR (KHÔNG service) → instantiate handler trực tiếp `new ApproveLeaveRequestHandler(db, AsUser(u), clock).Handle(cmd,ct)`, chỉ 3 dep (IApplicationDbContext + TestCurrentUser + FixedDateTime) — nhẹ hơn 6-dep Contract service. MaDonTu format "DT/LR/2026/001". Gap #4 (Workflow Apps) PARTIAL done — Travel/Vehicle mirror pending. ⚠️ Lesson: CWD drift (fe-user) → ghi MEMORY nhầm path, em main relocate. Verify CWD root trước Write memory.