[CLAUDE] Docs: Harness-4 two-tier runtime-VERIFIED (spawn-test 2 chiều post-restart) + email-back AI_INFRA

- Spawn-test 2 chiều S57bis: H1 tooling-auditor (demote pin) self-report claude-opus-4-8[1m] + H2 harvest-curator (promote inherit) self-report claude-fable-5[1m] → nấc executed-file/PENDING-RESTART → RUNTIME-VERIFIED (adap-report §2/§5 + STATUS row). [1m] 1M-resolve SE tự verify.
- Email update 2026-06-11-se-to-ai_infra-harness-4-runtime-verified (nac sent, sha ecf1d587, honest n=1/chiều, hmw.js executed-file giữ) + _index OUTBOUND.
- Lesson env: CCD harness cache agent frontmatter — restart CLI mới ăn (2 data-point 06-10/06-11).
- Bundle 06-10 carry: 7 agent pin opus-4-8 + 4 inherit + hmw.js tier-map H4.5 + agents/README two-tier + 2 adap-report + email 06-10 + agent-memory delta (KEEP-ALL-5 H2-verified) + investigator L1→L2 archive curate.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.claude/agent-memory/implementer-backend/MEMORY.md

@@ -74,6 +74,8 @@ UI `disabled={!canX}` + BE helper `EnsureCanXAsync(id, userId)` throw 403 (NOT i
 
 ## 📅 Recent activity (FIFO — older → archive/git)
 
+- **2026-06-10 (S57-resume spawn-test H4.8 — Harness-4 two-tier):** Mình bị DEMOTE pin `model: claude-opus-4-8` (deterministic-scaffold class, double-gate reviewer+test+cicd sau lưng). Spawn-test echo model NGAY sau edit → self-report `claude-fable-5[1m]` = SE env (CCD harness) KHÔNG fresh-read frontmatter → pin ăn SAU restart CLI. Post-restart mình chạy Opus 4.8 (effort Max giữ env-wide); task hệ-trọng giao mình qua hmw có thể override `tier:'fable'`. Tag [h4-demote, spawn-test, pending-restart].
+
 - **S56 GOLIVE-HARDEN 3 BE fix (NO mig, 3 file edit, em-main spec deterministic 100% → ACCEPT Case 1):** **#3 LeaveBalance lost-update** `LeaveOtApprovalFeatures.cs` terminal DaDuyet branch → atomic-executeupdate-tx (spec chosen, KHÔNG RowVersion/Mig). Replaced in-mem `bal.UsedDays += NumDays` với: set p.Status/Updated* → `(DbContext)db` cast + `BeginTransactionAsync(ct)` (plain, NO IsolationLevel — READ COMMITTED đủ vì increment atomic) → STEP1 ensure-row (FirstOrDefault, auto-create UsedDays=0 via tracker) + SaveChanges (opinion+status+insert trong tx) → STEP2 `db.LeaveBalances.Where(...).ExecuteUpdateAsync(s=>s.SetProperty(b=>b.UsedDays, b=>b.UsedDays+p.NumDays), ct)` server-side row-lock race-free → `tx.CommitAsync` + **`return;`** (skip trailing shared SaveChanges). **STALE-TRACKED caveat (load-bearing):** ExecuteUpdate bypass tracker → tracked `bal` giữ pre-increment value; SAFE vì không đọc lại + handler return ngay; KHÔNG thêm `bal.UsedDays +=` (double-count). `using System.Data` + EF Core đã import. **#5 AssignItTicketHandler existence-oracle** `WorkflowAppsFeatures.cs:493` → moved Admin-OR-dept-IT Forbidden guard (itDeptId+isAdmin+myDeptId resolve) TRƯỚC ticket NotFound lookup → fail-closed (non-IT nhận Forbidden cho MỌI ticketId). assignee-must-be-IT Conflict + reassign giữ nguyên. **#6 DocxRenderer.cs:30,40 CS8602** → hoist `mainPart = doc.MainDocumentPart ?? throw InvalidOperationException` + `document = mainPart.Document ?? throw` (Document cũng nullable — KEY: 1st hoist chỉ fix part, vẫn còn 1 warn ở `.Document.Body`); deref qua local non-null. Build SolutionErp.slnx **0 err 0 warn** (DocxRenderer warn CLEARED — thực tế 1 warn không phải 2 như MEMORY ghi). Test 58 Domain PASS + 154/158 Infra: **4 FAIL `LeaveBalanceTests` (Approve_LastLevel_DeductsLeave.../AccumulatesExisting.../OverEntitled.../MultiLevel_NoDeductAtIntermediate)** = EXPECTED #3 stale-tracked (re-query trả tracked instance pre-increment, DB row đúng) → tests_to_update cho test-specialist (add AsNoTracking/ChangeTracker.Clear). ItTicket authz tests #5 PASS (Case5 đã expect Forbidden, NotFound case dùng Admin caller). KHÔNG touch tests/FE/commit. #4 (Travel/Vehicle smoke test) = test-specialist next stage. Tag `[s56, golive-harden, executeupdate-atomic, fail-closed-authz, cs8602, no-mig]`.
   ↳ **[em main post-review S56]** Tx bumped → `IsolationLevel.Serializable` (shipped code `LeaveOtApprovalFeatures.cs:369`) per database-agent review — convention-align (codegen/Proposal/TravelVehicle) + serialize auto-create-row race. '(plain, NO IsolationLevel — READ COMMITTED đủ)' ở entry = pre-review reasoning, **superseded**. Test 228 green.
 - **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]`.