# Implementer-Backend — Archive 2026-06 (S41-S55 verbose, curated S? Harness-9)

> **Archived:** 2026-06-17 Harness-9 Stage B curate (em main proxy). 14 verbose Recent-activity bullets moved BYTE-EXACT from MEMORY.md (L87-L104) to keep L1 HOT slim < 25KB.
> **Scope:** S55 master-import → S41 P11-A Wave 1 schema (+ 3 already-condensed Archived-stubs pointing git d2f52ba / earlier q4). FIFO chronological NEWEST-first as they appeared in L1.
> **FROZEN:** entries below are verbatim copies — do NOT reflow/edit. Re-grounding of stale counts is a separate pass (additive-only).
> **KEEP in MEMORY.md:** header+role+split boundary + BE Patterns 1-4/7-9/12-bis/12-ter + anti-patterns+BE conventions + Curate trigger + 6 newest Recent-activity (06-17 Off_Dashboard → S56 GOLIVE-HARDEN).

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## Moved Recent-activity entries (verbatim, FIFO newest-first as in L1)

- **S55 master-data import (Mig 48 `AddProjectMasterFields` 4 AddColumn no-table + `SeedRealMasterDataAsync` 62 Project+71 WorkItem+3 Supplier) [proxy by em main — agent return truncated gotcha #53 before MEMORY step]:** Project entity +4 prop (`Year int?`, `Investor/Location/Package string?`, maxlen 250/500/300 ProjectConfiguration). `ProjectFeatures.cs` DTO+CreateCmd+UpdateCmd+validators+handlers+List/Get projections +4 (all nullable, appended end). **`SeedRealMasterDataAsync`** = 3 tuple-loop per-code idempotent (mirror `SeedDemoMasterDataAsync:2185` `existingCodes.Contains→skip`) wired UNGATED line 118 AFTER `SeedCatalogsAsync` → reaches prod (DemoSeed:Disabled=true KHÔNG gate, by-design như SeedDemoMasterData/Catalogs). Project Name=Code khi Excel blank. WorkItem 4 Category (Vật tư16/Thầu phụ30/MEP9/Thiết bị16, gen Code VT/TP/MEP/TB-NN; divider "THIẾT BỊ" dropped). Supplier NTP→NhaThauPhu/NCC→NhaCungCap, extras→Note. **FLOCK01 collision** demo↔real → per-code skip (demo thắng, real code+year only, OK). Compile-fix `MasterCatalogFilteredUniqueTests.cs` +4 null args CreateProjectCommand (necessary build-green). **Runtime Dev proof (em main):** app-start seeded 62proj/71wi/3sup landed, CAL01.Investor col populates, 0 overflow/dup. Build 0/0, test 216. Data spec `scripts/master-import-data.generated.md`. Tag `[s55, master-import, mig48, seed-real-ungated, project-4field]`.
- **S54 ItTicket reassign cross-stack — IT-staff self-service (NO migration, 2 BE file edit):** NEW `GetAssignableItStaffQuery`+`AssignableStaffResult(CanReassign,Staff)`+`AssignableStaffDto(Id,FullName)` capability endpoint (REGION 5 WorkflowAppsFeatures.cs) + MODIFIED `AssignItTicketHandler`: authz Admin-OR-dept-IT → `ForbiddenException`; assignee-must-be-IT → `ConflictException`. Controller `/assign` hạ `[Authorize(Roles="Admin")]`→`[Authorize]` (handler enforce fine-grained data-driven) + NEW `GET /assignable-staff`. Predicate IT = reuse round-robin S52 `Departments.Where(Code=="IT" && !IsDeleted)`. `ICurrentUser` KHÔNG có DepartmentId → query `db.Users.Where(Id==cu.UserId).Select(DepartmentId)`. 2 pattern split (em main reconciled từ stray src/Backend/.claude — cwd-relative Write mishap): [[pattern-controller-lower-authorize-handler-finegrained]] + [[pattern-scoped-capability-endpoint-anti-silent-403]]. Build 0/0, test 203→216 (test-specialist +13 authz), reviewer PASS (role-string "Admin" chain-verified real: AppRoles→SeedRoles→JWT ClaimTypes.Role→cu.Roles). Tag `[s54, it-ticket-reassign, capability-endpoint, authz-handler, no-mig]`.
- **S54 Task D BE — promote AttendanceReport to sidebar menu leaf (NO migration, 2 file edit):** Case 1 mechanical, menu = DbInitializer idempotent seed (not schema). 3 insert: (1) MenuKeys.cs const `OffAttendanceReport = "Off_AttendanceReport"` after OffChamCong:124 · (2) MenuKeys.cs All[] Off-group line +`OffAttendanceReport` after OffChamCong:158-159 · (3) DbInitializer.cs menu tuple `(OffAttendanceReport, "Báo cáo chấm công", Off, 8, "FileBarChart")` after OffChamCong:1787 (Order 8, parent Off, mirror Vehicle/Driver S51). **adminPermAutoViaAll=TRUE verified 2-point:** `SeedAdminPermissionsAsync` DbInitializer:1916 iterates `MenuKeys.All` → full-CRUD Permission row per missing key (idempotent `existingMenuKeys.Contains`); `Program.cs:78` iterates All × Actions → policy registration. +All[] = both auto, NO manual grant. **Idempotent-add verified:** menu upsert loop DbInitializer:1845-1862 `existingItems.TryGetValue(key)` miss → `MenuItems.Add` (existing prod gets leaf on restart, existing rows only Order-reconciled — same as S51). Build 0 err (2 pre-existing DocxRenderer warn). KHÔNG touch FE (menuKeys.ts/Layout = implementer-frontend) / tests / commit. Tag `[s54, task-d, menu-leaf, no-mig, admin-perm-via-all]`.

- **S53 gotcha #57 EXT BE — filter 3 Master Code unique indexes + Mig 46 local catch-up (Mig 47 `FilterMasterCatalogUniqueIndexesByIsDeleted`, index-only no-table):** Test-before RED→GREEN driven (test-specialist `MasterCatalogFilteredUniqueTests`, 3 FAIL on unfiltered → must turn GREEN). gotcha #57 4th+5th+6th cumulative (S45 Holiday Mig 43, S51 HRM×3 Mig 45 → now Department/Project/Supplier). Edit 3 config Code unique: `b.HasIndex(x=>x.Code).IsUnique()` → `+.HasFilter("[IsDeleted] = 0")`. **KEY: copied EXACT filter string byte-for-byte from HolidayConfiguration:18 + LeaveTypeConfiguration:19** (spaces around `=`, NOT guessed) → snapshot+SQL Server consistent with 13 existing filtered indexes. SupplierConfiguration: ONLY Code index filtered, `HasIndex(x=>x.Type)` :25 LEFT untouched (verified snapshot 3590 Type no-filter). Mig diff CLEAN: Up=3×DropIndex+3×CreateIndex filtered, Down=3×reverse unfiltered (no drift, no extra table/col). Master entities HAVE global `HasQueryFilter(!IsDeleted)` (unlike HRM) — app-check `db.X.AnyAsync(Code==req.Code)` filters soft-deleted → passed; then bare DB index counted it → UNIQUE violation 500. Filter aligns DB index with app-check. **Mig 46 local catch-up:** S52 left local LocalDB stuck at Mig 45 (prod had 46 via CI, local gap). `database update` to BOTH DBs applied Mig 46 (`AddSlaFieldsToItTicket`) THEN Mig 47 — residual closed. Dev override `--connection SolutionErp_Dev`; Design factory-default `SolutionErp_Design` (both `(localdb)\MSSQLLocalDB`). Build 0 err (2 pre-existing DocxRenderer warn). Full suite 203 GREEN (58 Domain + 145 Infra, +3 new). KHÔNG touch FE/test/commit (em main commits). Tag `[s53, gotcha-57-ext, mig47, mig46-catchup, filter-byte-for-byte]`.

- **S52 P11-D Wave2 BE — ItTicket round-robin + SLA (Mig 46 `AddSlaFieldsToItTicket`, 3 AddColumn no-table) [proxy by em main: agent killed session-limit trước MEMORY step]:** Entity +SlaDueAt/SlaWarnedSent/SlaBreached. `CreateItTicketHandler`: `SlaWindow` static map (Urgent4/High8/Medium24/Low72h) **shared với `ItTicketSlaJob`** (single-source) → `e.SlaDueAt=CreatedAt+window`. Round-robin least-loaded: `db.Users.Where(DepartmentId==itDeptId && IsActive).OrderBy(db.ItTickets.Count(assigned && !Closed && !Resolved)).ThenBy(Id).First()` (itDept = `Departments.Code=="IT"`); no IT-staff → unassigned. NEW `ItTicketSlaJob:BackgroundService` mirror SlaExpiryJob (30s warmup/15min loop/scope) NHƯNG **KHÔNG auto-transition** — chỉ breach (SlaDueAt<now & !breached & open → SlaBreached=true + notify assignee) + warning (≤20% window → notify + SlaWarnedSent), idempotent qua guard. DI `AddHostedService<ItTicketSlaJob>` sau SlaExpiryJob. `AssignItTicketCommand` + PUT `/{id}/assign` `[Authorize(Roles=Admin)]`. DTO +SlaDueAt/SlaBreached + projection. **DbInitializer `SeedItDepartmentStaffAsync` KEY ordering: PHẢI chạy SAU `SeedDemoUsersAsync`** (method đó reconcile 2 user dept về PRO/CCM mỗi boot → override về IT sau, end-state deterministic) + dept "IT" thứ 10 + gán nv.cao/nv.truong (sample user, idempotent). Build 0-err. Tag `[s52, p11-d, mig46, round-robin, sla-job, seed-ordering]`.

- **S52 P11-E+F Wave1 BE migration-FREE (4 file new + 3 edit, NO mig):** Case 1/2 deterministic ~98% em main. **P11-F** (2 LOC): `CreateItTicketHandler` set `e.MaTicket = WorkflowAppCodeGen.GenerateMaDonTuAsync(db,"IT",clock.Now.Year,clock,ct)` TRƯỚC `db.ItTickets.Add` — gen lúc Create (kanban no-workflow, khác Leave/OT gen lúc Submit). Helper = `internal static` cùng ns Office, gọi trực tiếp no-using. Format `IT/2026/001`. **P11-E** report chấm công: NEW `AttendanceReportFeatures.cs` (DTO 3 record EXACT + GetAttendanceReportHandler) + NEW `IAttendanceReportExcelExporter`(App/Reports/Services) + NEW Infra `AttendanceReportExcelExporter`(ClosedXML mirror ContractExcelExporter, sync `Export(dto)` no-DB) + DI scoped + Controller +2 endpoint `[Authorize(Roles=Admin)]`. **KEY gotcha day-type:** DayOfWeek+holidaySet KHÔNG EF-translate → `.ToListAsync()` rồi group/classify IN-MEMORY C#. **KEY gotcha type:** `Holiday.Date`=**DateOnly** KHÔNG DateTime (spec viết HashSet<DateTime> nhầm) → `HashSet<DateOnly>` + so `DateOnly.FromDateTime(a.AttendanceDate.Date)`. OtPolicy active fallback 1.5/2.0/3.0. Day-type prio: holiday→weekend(Sat/Sun)→weekday. OtWeighted=Σ(cấp×hệ số). FullName denorm ưu tiên `Attendance.UserFullName` rồi User.FullName. DeptName LEFT JOIN. RenderResult=(Content,FileName,ContentType) ns Forms.Services. Controller inject exporter ctor. Build 0 err (2 pre-existing DocxRenderer warn). KHÔNG touch FE/test/mig/ItTicket-khác. Routes: GET `/api/attendances/report?year&month&departmentId` + `/report/excel`. Tag `[s??, p11-e-f, wave1, no-mig, day-type-in-memory, dateonly-holiday]`.

- **S51 P11-C HMW W1 — Vehicle+Driver catalogs HrmConfigs (Mig 44 `AddVehicleAndDriverCatalogs`, 9 add-point ~12 file/edit):** Pattern 12-bis catalog-mega 4th cumulative. 2 entity (`Vehicle`/`Driver`:AuditableEntity Domain/Hrm) + 2 EF config (mirror `HolidayConfiguration` filtered, NOT buggy bare LeaveType) + 2 DbSet (IAppDbContext+ApplicationDbContext) + Mig 3-file + HrmConfigFeatures Region5/6 (DTO+List/Create/Update/Delete CQRS mirror Region1 EXACT) + Controller +2 route group (8 endpoint, GET public + POST/PUT/DELETE `[Authorize(Roles=Admin)]`) + MenuKeys +2 const +All array + DbInitializer (menu 2 leaf + SeedHrmConfigsAsync guard&seed 2 veh+2 drv). **gotcha #57 KEY:** Code UNIQUE `.HasFilter("[IsDeleted]=0")` — Mig diff verified CLEAN 2 CreateTable + 2 filtered IX no drift. Validator MaxLength = em main schema (Code50/Name200/Plate20/Phone20/LicNum50/LicClass20/Desc500), SeatCount GreaterThanOrEqualTo(0). Admin perm AUTO-grant: `SeedAdminPermissionsAsync` + `Program.cs:78` both iterate `MenuKeys.All` → +All array = 8 policy + Admin row auto (no manual grant code). HRM no HasQueryFilter → `.Where(!IsDeleted)` manual. Applied BOTH DB. Build 0 err (2 pre-existing DocxRenderer warn). RAG/Qdrant DOWN → all Read/Grep on-disk. Spec deterministic ~98% em main → ACCEPT Case 1. KHÔNG touch FE/test/commit. Tag `[s51, p11-c, mig44, vehicle-driver, catalog-mega]`.
- **S43 P11-B Wave 1 — LeaveBalance business logic (Mig 42 `AddLeaveBalances`, 7 file: 1 entity + 1 config + 2 DbSet edit + Mig 3-file + 1 hook edit + 1 Features + 1 Controller):** Case 1/3 deterministic ~98% em main spec. Pattern 12-ter-adjacent single-entity: entity `LeaveBalance:AuditableEntity` (UserId/LeaveTypeId/Year + EntitledDays/UsedDays/AdjustmentDays decimal(5,2), nav LeaveType). Config FK LeaveType WithMany() **Restrict** (catalog no cascade) + UNIQUE composite (UserId,LeaveTypeId,Year) + IX UserId. Mig diff CLEAN: 1 CreateTable + 3 IX, no drift. Applied BOTH DB (Dev `SolutionErp_Dev` + Design default). **Deduction hook:** insert in `ApproveLeaveRequestHandler` terminal else (DaDuyet branch) ONLY — UPSERT LeaveBalance, `bal.UsedDays += p.NumDays`, exactly-once guaranteed by early guard `Status != DaGuiDuyet throw`. OtRequest/Travel/Vehicle UNTOUCHED (only Leave has balance). CQRS `Application.Hrm`: DTO RemainingDays=Entitled+Adjustment−Used COMPUTED (not stored) + GetMy/GetUser lazy-merge (load active LeaveTypes + balances → in-memory merge, synth default when no row — KHÔNG EF LEFT JOIN translate) + AdjustLeaveBalanceCommand admin upsert (HasValue-gated). **Policy resolved:** HRM admin convention = `[Authorize(Roles="Admin")]` NOT menu policy (verified HrmConfigsController write endpoints) — used on GET-by-user + PUT /adjust; /my = `[Authorize]`. Controller injects IDateTime for year default `clock.Now.Year` (thin, no DateTime.Now hardcode). HRM no HasQueryFilter → `.Where(!IsDeleted)` manual everywhere. KHÔNG touch FE/test/commit. Build 0 err (2 pre-existing DocxRenderer warn). Tag `[s43, p11-b-w1, mig42, leave-balance, single-entity]`.
- **S42 P11-A SEED — 4 sample ApprovalWorkflow V2 for WorkflowApps (DbInitializer.cs only, +4 method ~210 LOC + 4 call):** Case 1 mechanical mirror `SeedSampleProposalWorkflowV2Async` EXACT × 4 (Leave5/Ot6/Travel9/Vehicle7). Each: idempotent `AnyAsync(ApplicableType==X)` guard → resolve approver `binh.le@solutions.com.vn` (SAME user as Proposal/Contract seed, null→LogWarning+return) → 1 ApprovalWorkflow (Version=1, IsActive+IsUserSelectable=true, ActivatedAt=UtcNow) + 1 Step (Order=1, Name="Cấp duyệt", DepartmentId=CCM?.Id) + 1 Level (Order=1, ApproverUserId). Codes QT-NP/OT/CT/XE-V2-001. Wired 4 calls after SeedSampleProposalWorkflowV2Async (NOT gated DemoSeed, gotcha #51 infra seed). Enum verified Grep. Build 0 err 0 warn. Bash tool = bash NOT PowerShell despite env hint (use `cd && cmd | grep`). Spec deterministic 100% → ACCEPT Case 1. NOT touched App/Controller/FE/test/Mig. Tag `[s42, p11-a, seed, mirror-proposal-exact]`.
- **S42 P11-A Wave 2b APP — wire ApproveV2 CQRS Travel+Vehicle (`TravelVehicleApprovalFeatures.cs` ~830 LOC + 2 controller edit):** Cookie-cutter mirror Wave 2a / ProposalFeatures Region 2. 1 new file ns `Application.Office`: 2 module × (DetailDto + LevelOpinionDto + GetById JOIN Step/Level metadata + UpdateDraft + Submit + Approve UPSERT+advance + Reject TuChoi + Return TraLai+RejectedFromStatus) + 1 shared `internal static TravelVehicleCodeGen.GenerateMaDonTuAsync` (Serializable tx, `WorkflowAppCodeSequences` Prefix-keyed, prefix `DT/CT/{year}` Travel & `DX/XE/{year}` Vehicle, format `{prefix}/{seq:D3}` — D3 no year segment per spec). KEY gotcha: WorkflowAppStatus enum DIFFERS from ProposalStatus int values (DaGuiDuyet=2 not 1, TraLai=3) → mirror by SEMANTIC enum member not literal. Owner = `RequesterUserId` (not DrafterUserId). Submit verify wf.ApplicableType==Travel9/Vehicle7 else Conflict. 2 controller +6 route each (GET{id}/PUT/submit/approve/reject/return) nested body records, CreatedAtAction. KHÔNG sửa WorkflowAppsFeatures.cs/Leave/Ot/FE/test/seed. Build 0 err. Spec deterministic ~98% em main → ACCEPT Case 1/2. Tag `[s42, p11-a, wave-2b, mirror-proposal-region2]`.
- **Archived S42 P11-A Wave 2a APP (LeaveOt ApproveV2 CQRS) → git history (S65b FIFO trim):** KEY absorbed Pattern 4 + WorkflowAppCodeGen Serializable-tx Prefix-keyed `{prefix}/{year}/{seq:D3}` + WorkflowAppStatus enum DIFFERS ProposalStatus (mirror SEMANTIC member not literal) + Owner=RequesterUserId. Detail in Wave 2b entry above + S56 em-main Serializable note.
- **S41 P11-A Wave 1 SCHEMA — wire ApproveV2+LevelOpinions 4 WorkflowApps (Mig 41 `WireWorkflowAppsApprovalV2`):** Pattern 12-bis cookie-cutter mirror Proposal Mig 38, 13× cumulative. 11 file: 5 entity (4 `{Leave,Ot,Travel,Vehicle}RequestLevelOpinion` + shared `WorkflowAppCodeSequence` Prefix-PK) + 5 EF config (auto-discover ApplyConfigurationsFromAssembly, no manual register) + edit 4 parent (nav LevelOpinions + `WorkflowAppStatus? RejectedFromStatus`) + edit enum (`TravelRequest=9`) + 2 DbSet (IAppDbContext+ApplicationDbContext, 5 each). Mig diff CLEAN: 5 CreateTable + 4 AddColumn (no drift). FK Cascade parent + Restrict Level + UNIQUE composite ({Parent}Id, ApprovalWorkflowLevelId). Applied BOTH DB (Dev + Design). Build 0 err. Wave 2 (App/Controller) + Wave 4 (test) deferred per spec. Spec deterministic 100% (em main chose schema) → ACCEPT Case 1. Tag `[s41, p11-a, 12-bis-13x, mig41]`.
- **Archived S35 G-H2 BE-CRUD-4-catalog + S29 Plan-B-Chunk-C Contract-V2-mirror → `archive/2026-05-q4.md` (S65 FIFO trim):** KEY absorbed Pattern 12-bis foundation above (catalog-mega + HRM `.Where(!IsDeleted)` manual + Validator MaxLength=EF-source).
- **Archived FE/test + older BE entries → `archive/2026-05-q4.md` + git d2f52ba (S40 curate):** S35 FE inline forms 5 satellite (→ frontend domain) · S34 test bundle +10 [Fact] 130 PASS (→ test-specialist domain) · S33 Task 5 EmployeesListPage · S32 wrap/startup. KEY absorbed in Patterns above + split pointers.
