# Investigator Agent — Persistent Memory

> **Persistent diary cross-session.** Auto-injected first 200 lines / 25KB at spawn.
> Update BEFORE every stop. Curate when > 25KB.

---

## 🎯 Role baseline

Read-only research + audit for SOLUTION_ERP codebase. Tools: Read, Grep, Glob, Bash, WebFetch, WebSearch. Output: concise structured findings under 500 words.

---

## 📋 Patterns proven (cross-session)

### Pattern: Smoke verify catalog SOLUTION_ERP
- Bearer auth từ `https://api.solutions.com.vn/api/auth/login` (POST email + password)
- Status code matrix expected vs actual + JSON output + MD audit
- Test credentials: `admin@solutions.com.vn / Admin@123456` (full) OR `nv.test@solutions.com.vn / TestUser@123456` (Drafter UAT scope)

### Pattern: Schema scan via sqlcmd
```bash
# LocalDB Dev (runtime — primary)
sqlcmd -S "(localdb)\MSSQLLocalDB" -d SolutionErp_Dev -Q "..."

# LocalDB Design (ef tooling)
sqlcmd -S "(localdb)\MSSQLLocalDB" -d SolutionErp_Design -Q "..."

# Production (qua SSH vietreport-vps)
ssh vietreport-vps "sqlcmd -S .\SQLEXPRESS -d SolutionErp -U vrapp -P '...' -Q '...'"
```
Common queries: `sys.columns`, `sys.triggers`, `__EFMigrationsHistory`, `COUNT(*)`, `sys.indexes`.

**Gotcha:** 2 LocalDB distinct (memory `feedback_designtime_runtime_db`):
- `_Dev` — runtime API (appsettings.Development.json ConnectionStrings:Default)
- `_Design` — `dotnet ef migrations add/update` default target
- Use `--connection "Server=(localdb)\MSSQLLocalDB;Database=SolutionErp_Dev;..."` override khi cần Dev specifically.

### Pattern: Controller audit
- Grep `\[Route\("api/[a-z]+"\)\]` enumerate ~30+ controllers
- Grep `\[Authorize(Policy = "..."` audit per-action policy (gotcha #44 silent 403 class-level quá strict)
- Grep `IActionResult` vs `ActionResult<T>` — typed return preferred
- Grep `// Mock` / `alert(` / `setEditing(null) // close UI` — wire claim bugs

### Pattern: Memory cross-reference
19 memory entries tại `C:\Users\pqhuy\.claude\projects\D--Dropbox-CONG-VIEC-SOLUTION\memory\` (S20 +2 turn 11/12, S21 +2 turn 5):
- `MEMORY.md` — index
- `project_solution_erp.md` — cumulative narrative S1-S17
- `feedback_per_chunk_commit.md` — 5-chunk A-E discipline
- `feedback_uat_skip_verify.md` — Phase 9 skip test rule
- `feedback_drastic_refactor_scope.md` — defer dedicated session
- `feedback_audit_reuse_before_clone.md` — audit-first pattern (Investigator natural fit)
- `feedback_service_hook_vs_endpoint.md` — derived state hook pattern
- `feedback_n_stage_workflow_pattern.md` — DEPRECATED (Mig 21 flat workflow replaced)
- `feedback_designtime_runtime_db.md` — 2 LocalDB distinct
- `feedback_md_compact_narrative.md` — §6.5 KEEP narrative rule
- `feedback_unittest_timing.md` — §7 test timing
- `feedback_cron_monthly_limitation.md` — Cron SDK 7-day expire
- `feedback_user_manual_style.md` — non-tech docs style
- `feedback_node_cicd.md` — Node 20.x pin
- `feedback_responsive_laptop_breakpoint.md` — 4-tầng responsive pattern (S20 t11)
- `feedback_multi_agent_setup.md` — 4 sub-agents setup discipline (S20 t12 init 3 + S21 t1 +cicd-monitor)
- `feedback_rag_hybrid_pattern.md` — RAG Hybrid Cách A planning (S21 t2, 5 dự án future)
- `feedback_ef_migration_backfill_reorder.md` — ADD→BACKFILL SQL→DROP manual reorder (S21 t5 Mig 29)
- `feedback_per_nv_permission_scope.md` — Multi-role flag split scope per role (Approver Level vs Drafter User), S21 t4→t5 refactor
- `reference_session_prompts.md` — canonical session start template

### Pattern: External research priority sources
- `anthropic.com/engineering/` (official patterns)
- `cognition.ai/blog/` (Devin lessons)
- `philschmid.de` + `eugeneyan.com` + `hamel.dev` (senior engineers)
- `learn.microsoft.com/en-us/aspnet/core/` (.NET 10 official)
- `tanstack.com/query/latest` (TanStack Query)

---

## ⚠️ Anti-patterns observed

- ❌ Skip MEMORY.md update before stop — lose knowledge tài sản
- ❌ Vague conclusion "seems like" / "probably" — em main rejects
- ❌ Missing file:line refs — non-verifiable evidence
- ❌ Exceed 500 words — em main reads too slow
- ❌ Scope drift to architectural recommendations — em main decides, not me

---

## 🧠 SOLUTION_ERP context essentials (auto-load)

- **DB Dev:** `SolutionErp_Dev` LocalDB (59 tables / 30 migrations / Mig 30 latest `AddAllowApproverEditBudgetToLevels`)
- **DB Design:** `SolutionErp_Design` (ef tooling distinct)
- **DB Prod:** `.\SQLEXPRESS` / `SolutionErp` / `vrapp` user via SSH `vietreport-vps` (fallback `C:\inetpub\solution-erp\api\appsettings.Production.json` khi `$env:PROD_DB_PASSWORD` empty — CICD Monitor discovery S21 t5)
- **Tech stack:** .NET 10 Clean Arch (Api → Application ← Domain + Infra) + CQRS MediatR + EF Core 10 + 2 React 19 Vite 8 TS 6 (fe-admin :8082 + fe-user :8080) + SQL Server + Gitea Actions CI + IIS prod
- **Live deploys (Prod UAT):** https://api.solutions.com.vn · https://admin.solutions.com.vn · https://eoffice.solutions.com.vn
- **Gitea remote:** https://git.baocaogiaoduc.vn/vietreport-admin/solution-erp
- **Gitea Actions API:** path `/api/v1/repos/.../actions/tasks` (NOT `/actions/runs` — 404). Cache stale ~2 min (gotcha #46) — cross-check VPS file mtime
- **SSH VPS:** `ssh vietreport-vps` (config `~/.ssh/config` user=Administrator key=id_ed25519)
- **Gotchas active:** 47 (+1 #48 SQLite tie-break pending docs — Plan AB Chunk A2 S25 t1; reference `docs/gotchas.md`)
- **Tests baseline:** 111 PASS (S22 baseline 104 + 7 PE WF cumulative; S25 Plan M tests SQLite tie-break re-stabilized Chunk A2) — Phase 9 UAT skip per chunk (memory `feedback_uat_skip_verify`)
- **Endpoints:** ~146 (S22 +3 stable: PATCH /users/{id}/allow-skip-final + PATCH /pe/{id}/budget-adjust + GET /pe/{id}/attachments/{attId}/view)
- **Memory user-level:** 23 entries (+2 S25: Plan AC2 FE merge synthetic recovery + Plan AF userMap fallback patterns)
- **Users:** 30 demo + 33 active prod (13 cũ + 20 mới S22+2 role-based: act/bod/equ/fin/hra/pm/qs prefix `.nv/.pp/.tp` + bod.1/2). Password policy ≥12 chars (S22+2 discovery, `TestUser@2026`)
- **API auth response:** `accessToken` + `refreshToken` + `user` (S22+2, NOT `token`)
- **Master HEAD reference:** check via `git log -1 --format='%H'`
- **6 skills:** `contract-workflow` · `permission-matrix` · `form-engine` · `ef-core-migration` · `dependency-audit-erp` · `iis-deploy-runbook`

---

## 🔄 Active workflow schemas (V1 + V2 coexist post-Session 17)

- **V1 Mig 21 flat workflow** — `WorkflowDefinition` pin với PE/Contract cũ. Match Dept+PositionLevel.
- **V2 Mig 22-30** — `ApprovalWorkflow` pin với PE mới + match `ApproverUserId` 1-1 OR-of-N cùng Cấp. Steps (Phòng) > Levels (Cấp). PE đã wire V2. Contract V2 PENDING (Plan F drop V1 ABORTED S22+4 — Contract entity HOÀN TOÀN V1 chưa wire V2 + 4 PE V1-only + 19 PE V1+V2 mix).
  - **Mig 25** IsUserSelectable (admin pin/unpin per workflow cho user pick)
  - **Mig 26** PE Level Opinions UPSERT (service hook khi Duyệt)
  - **Mig 28** (S21 t4) 6 Allow* workflow-level — **REPLACED by Mig 29**
  - **Mig 29** (S21 t5) Allow* refactor per-NV: 5 flag on `ApprovalWorkflowLevels` (F1+F3 per Approver slot) + 1 flag on `Users.AllowDrafterSkipToFinal` (F2 per Drafter)
  - **Mig 30** (S22+5) F4 `AllowApproverEditBudget` per-Level slot on `ApprovalWorkflowLevels` — admin Designer tick per slot cho Approver được edit Budget khi review. Pattern reinforced 2× với Mig 29 F1+F3: default = admin opt-in per slot, KHÔNG = mở rộng default. Cross-ref memory `feedback_per_nv_permission_scope.md` proven cumulative Mig 29 + Mig 30.

State machine 5 trạng thái phiếu PE: Nháp / Đã gửi duyệt / **Trả lại (TraLai=98)** / Từ chối / Đã duyệt.

**Mode Trả lại 4 option per-Level** (S21 t4-t5 Mig 28→29):
- OneLevel = lùi 1 Cấp cùng Step (peer review)
- OneStep = lùi sang Bước trước Cấp cuối
- Assignee = pick NV đã ký runtime (PeLevelOpinions)
- Drafter = Phase=TraLai clear pointer (S17 backward compat default TRUE)

3 mode đầu giữ Phase=ChoDuyet lùi pointer. Mode Drafter giữ Phase=TraLai. Admin bypass `level.Allow*` flag.

---

## 📅 Recent activity (last 10 FIFO)

- **2026-05-22 (S29 wrap — Plan CA + Plan B pre-flight 2 spawns + 3 patterns NEW):** S29 close 2 big plans cumulative. **Plan CA (Move Cấu hình danh mục admin → eoffice)** 7 commits `06a441c..6eec8d7` push deployed Run #229+#230 PASS. **Plan B (Contract V2 wire mirror PE V2 pattern Mig 22-26)** 11 commits `58898e8..38f1c4d` push deployed Run #231+#232 PASS. **Investigator role 2 spawn:** (1) **Plan CA pre-flight audit** (agentId a7ab5576c77ee3730, ~15K token): map 9 menu danh mục terrain + GOTCHA tree-inherit Catalogs↔Master + recommend chunk structure A/B/C/D. fe-user component parity verified (DataTable + PageHeader + PermissionGuard + 6 shadcn ui). DbInitializer SeedAdminPermissionsAsync admin role grant CRUD 27 menu key. Permission Matrix dynamic load /api/menus → tự reflect post-move. (2) **Plan B pre-flight audit Contract V1 state** (agentId abf91b30391fb0cdb, ~25K token): map `Contract.cs` 25 fields (V1 only) + `ContractPhase` enum 12 values (TraLai=98 + TuChoi=99 ready) + `ContractWorkflowService.cs` 220 LOC V1 only + sqlcmd prod 7 V1 contract (Phase 2-8 active workflow) + PE Mig 22-26 reference templates + impact assessment (COEXIST V1+V2, KHÔNG drop V1) + re-chunk 6 chunks (split A → A1 entity + A2 mig). 3 surprise: ApprovalWorkflows Prod ZERO ApplicableType=3 (Chunk A2 must seed sample) + `RejectedAtStepIndex` drift deprecated + ContractType 7 variants generic ApplicableType=3. **Patterns proven NEW Investigator perspective S29:** (a) **9-menu permission terrain map pattern** (Plan CA) — Investigator inventory file paths + line ranges + component parity check + recommend chunk before delegate Implementer. ROI cao. (b) **V1+V2 coexist boundary** (Plan B) — KHÔNG drop V1 vì 7 prod contract pinned. Mirror PE Mig 22-24 spec. (c) **Reference template paths cross-module mirror** (PE → Contract V2): Investigator cite EXACT line ranges (PE Mig 23:14-31, Mig 24:14-17, Mig 26 UNIQUE composite, Service ApproveV2Async 446-634, 519-546 UPSERT, 774-783 ResolveActor) → em main + Implementer chỉ cần mirror rename entity. ROI rất cao saving 30%+ time. **Anti-patterns observed:** (a) Investigator KHÔNG verify endpoint exists end-to-end qua live curl — defer to CICD Monitor stage 4. (b) Investigator output sometimes verbose >700 words → em main hỏi cô đọng <500 next time.

- **2026-05-22 (Plan B Contract V2 wire pre-flight audit — Q1-Q5 + Bonus re-chunk):** Em main spawn Investigator pre-flight Plan B priority HIGH. 5Q audit + Bonus chunk refinement. Tag schema: `[audit, phase-9, contract]`. **Findings:** (Q1) `Contract.cs:8-58` 25 fields, V1 ready (WorkflowDefinitionId line 22 + CurrentWorkflowStepIndex line 39 + Phase line 12 + RejectedAtStepIndex line 40) MISSING `ApprovalWorkflowId Guid?` + `CurrentApprovalLevelOrder int?` → need Mig 32 add. (Q2) `ContractPhase.cs:14-28` 12 values ready ChoDuyet=10 + TraLai=98 + TuChoi=99 mirror PE. `ContractWorkflowService.cs:23-219` 220 LOC V1 ONLY. NO V2 branch. Match Dept+PositionLevel line 113-126. Gen mã HĐ line 148-155 trigger last step → Phase=DaPhatHanh (terminal khác PE DaDuyet). (Q3) Prod: 7 Contracts 100% V1Pinned (Mig 21 flat WorkflowDefinitionId), 6 in-workflow Phase 2-8 → MUST coexist V1+V2, KHÔNG drop V1. ApprovalWorkflows Prod: 2 rows `ApplicableType=1 (DuyetNcc)` ZERO `ApplicableType=3 (Contract)` chưa seed. (Q4) Mig 22 `20260508053749_AddApprovalWorkflowsV2.cs:14-127` 3 CREATE TABLE shared cho cả PE+Contract, Mig 32 chỉ cần ADD COLUMN tại `Contracts`. Mig 23 `20260508072821_AddApprovalWorkflowIdToPurchaseEvaluation.cs:14-31` template 15 LOC cookie-cutter rename Pe→Contract. Mig 24 `20260508074937_AddCurrentApprovalLevelOrderToPe.cs:14-17` 3 LOC. `ApproveV2Async` `PurchaseEvaluationWorkflowService.cs:446-634` 189 LOC clone mẫu — load AW.Steps.Levels + match actorId ∈ pendingLevelGroup.ApproverUserId (line 484-495) + UPSERT opinion (line 522-546) + advance level/step (line 605-633) + skipToFinal F2 (line 561-602). Branch entry pattern line 167-171 ternary `if (evaluation.ApprovalWorkflowId is Guid awId) ApproveV2Async else ApproveV1Legacy`. (Q5) Risk LOW — schema 80% shared. F1-F4 7 flags Mig 29+30+31 trên `ApprovalWorkflowLevels` (entity line 86-114) inherits FREE Contract. **Risk MEDIUM:** ContractType discriminator — 1 workflow serve ALL 7 ContractType vs per-type? PE chỉ 2 type. Defer Q em main. **Bonus re-chunk 6 chunks:** A1 entity 5 LOC (em main) + A2 Mig 32 cookie-cutter (Implementer) + B Service ternary 189 LOC clone adapt gen mã HĐ terminal (em main critical cross-stack) + C Mig 33 ContractLevelOpinions cookie-cutter (Implementer) + D FE-User Workspace Select V2 (Implementer mirror) + E FE Section 5 LevelOpinionsV2 dynamic (Implementer mirror). **Surprises:** (a) ApprovalWorkflows Prod ZERO ApplicableType=3 — recommend Chunk A2 include DbInitializer seed sample. (b) `RejectedAtStepIndex` Contract line 40 DEPRECATED chưa marked obsolete drift với PE line 50. (c) ContractType 7 variants vs ApprovalWorkflow generic ApplicableType=3 — future Mig 34 có thể cần `ContractTypes int[]` filter nếu Solutions cần per-type workflow. **Recommendation: PROCEED coexist V1+V2 pattern, 6 chunk re-chunk.** Token ~25K. source_path: `solution_erp/audit/investigator-plan-b-contract-v2-preflight-2026-05-22`.

- **2026-05-22 (S28 wrap — Layer A governance internalized + tag schema mandatory forward):** S28 5-turn arc t1 RAG ROI verdict → t2 over-reach mistake → t4 bro caught → t5 Layer A active. Investigator agent absorb 3 rules forward: (1) **Tag schema mandatory** every RAG ingest `[<type>, phase-<N>, <bc-or-module>]` — type ∈ {bug, plan, audit, schema, ui-pattern, decision, retrospective, gotcha-doc}; phase enum 11 (`phase-9` UAT current); bc/module 8 domain {contract, pe, budget, master, identity, forms, notifications, audit-log} + 5 cross-cutting {cicd, infra, rag, governance, deploy}. (2) **4-category default + skip list** — skip ephemeral state ("S28 t3 startup ngày 22"), pure file paths không context, single-file < 5-line edit confirmation. Investigator output report tags MUST include all 3. (3) **NO self-authorize cross-project rule** — lesson S28 t4: stay scope-down SOLUTION_ERP self-discipline, don't generalize policy without bro consent. **Pre-flight audit query patterns Layer A §6.2** internalized: Pattern A `lookup_gotcha_<id>` (top_k=3, narrow), Pattern B `verify_precedent_pattern_X` (top_k=3 thay default 10 — broad similarity rerank surface 3 best matches), Pattern C `find_code_symbol_<class.method>` (top_k=5, symbol-anchor). **Weekly Friday eval ritual:** Investigator support Plan B Contract V2 wire pre-flight audit kick-off khi bro launch. Cumulative audit checklist (foundation cicd-monitor MEMORY S22+5→S23 t6 10-surface-point per-NV): (a) Contract entity V1 state inspect `Domain/Contracts/Contract.cs` + `WorkflowDefinitionId`, (b) Mig 22-23/26 PE V2 mirror reference confirm pattern reusable, (c) 4 PE V1-only audit migrate gap (per memory S22+4 Plan F ABORT), (d) 7 V1 contract scope drop boundary, (e) verify 10-surface-point per-NV checklist S22+5 cumulative reusable Contract V2 wire trước Mig 32 schema design. **source_path convention output:** `solution_erp/audit/investigator-<topic>-<date>` standardized cho tag schema BC=`pe` or `contract` switch per task. **Lesson abandoned:** S28 t2 "ghi RAG mọi tương tác" rule ABANDONED — Investigator KHÔNG mass-ingest, only specific findings with full tag schema. Audit retroactive S20-S26 "Investigator spawn" claims (memory log discrepancy registry NOT loaded vs token cost ghi 28-40K) defer S28+ priority #4 — uncertainty preserve cross-session, không retract memory unverified.

- **2026-05-22 (S27 wrap-up em main proxy - retrospective Investigator):** Investigator pre-flight CRITICAL miss: nếu spawn pre-Plan A.3 (RAG manual control build) → would have catch Qdrant Web UI static missing PRE-em main write rag-dashboard.ps1 link `localhost:6333/dashboard`. Pattern reinforced: **pre-flight infrastructure audit MUST spawn Investigator** trước khi em main claim "X work" trong docs. Em main S27 SOLO miss external dependency check (Qdrant Web UI separate repo from binary). Anh pqhuy catch via UAT browser → escalate.

  **Audit cumulative S20-S26 memory log entries claiming "Investigator spawn" - re-verify retroactive:** Per pitfall confirm spawn `investigator` agent type NOT FOUND trong session S27, có nghĩa registry chưa bao giờ load trong session này. Nhưng memory log S23 t1 K0 + S25 t1 audit Bug 1+2 + S26 Plan AG audit 5Q + Plan AI RAG research **đã ghi "spawn Investigator" với token cost 28-40K**. Possibility: (a) Previous sessions có registry load thành công (Claude Code version cũ hơn / file format khác / hot-reload sau /agents UI invoke), hoặc (b) Em main misattribute - actually spawn `general-purpose` agent default. Cần audit history Claude Code logs để xác minh - ngoài scope S27. **For now: trust prior memory entries but FLAG uncertainty cho future investigation.**

- **2026-05-22 (Curate session em main):** Archived 10 verbose Recent activity entries S21 → S24 Plan AA → `archive/2026-05-q1.md`. KEEP: S25 Bug audit + wrap, S26 Plan AG + Plan AI RAG, 2026-05-11 setup. Patterns proven section + Active workflow schemas section preserved. Memory size before: 34.9 KB → after: target ~20-22 KB.

- **2026-05-19 (S25 t1 spawn audit 2 bug critical UAT — Changelog logging missing):** Em main report 2 bug UAT: (1) Budget Adjust 2×click → "Lịch sử thay đổi" KHÔNG show 2 entry. (2) Return Assignee mode F1 click → "Lịch sử thay đổi" KHÔNG show return action. Audit 5Q: Q1-DB state Prod SSH fail (auth), fallback code inspect. Q2-Budget handler: `PurchaseEvaluationFeatures.cs:379-387` **ĐÃ log changelog** EntityType=Header + Action=Update + summary diff → **code ĐÚNG, likelihood FE filter bug or UAT DB stale**. Q3-Return handler: `PurchaseEvaluationWorkflowService.cs:215-378 ApplyReturnModeAsync` **ZERO changelog log** — 4 mode branches (OneLevel/OneStep/Assignee/Drafter) mutate pointers only, return summary, caller `TransitionAsync:100 LogTransitionAsync` only logs phase transition KHÔNG log mode side-effect. Q4-Schema: `PurchaseEvaluationChangelog.cs` support EntityType=Workflow(5) enum but **ZERO code populate** — schema incomplete missing Kind/ChangeType subtype enum to disambiguate "budget adjust" vs "detail edit" vs "return mode" (all Header/Workflow entity cùng Action.Update). Q5-FE: Query handler `ListPurchaseEvaluationChangelogsQueryHandler:1050-1064` **KHÔNG filter logic** — returns ALL entities. FE query component unknown (fe-user source not easily searchable) but **likely filter EntityType == (Supplier|Detail|Quote)** omit Header+Workflow → Bug 1 Budget (Header type) hidden, Bug 2 Return (Workflow type unlogged vậy). Root cause B1: FE filter skip Header updates OR Schema gap (Header.Update collision: budget vs section 2 edit). Root cause B2: Handler **intentionally skip logging** (no companion audit table like PurchaseEvaluationApprovals for return history). Fix path B1: Option A (add Kind enum — 30 LOC schema+handlers) vs B (extend EntityType — 20 LOC) vs C (FE filter conditional show Budget — 10 LOC FE). Fix path B2: Add `db.PurchaseEvaluationChangelogs.Add()` per mode (15-25 LOC 1 file). Cross-ref pattern memory: S23 t3 lookup bug (Level.Order collision per-NV Mig 29) — schema Mig 29 OR-of-N refactor created similar subtype ambiguity. Surprise: `EntityType.Workflow=5` enum value design-only, unused 4+ mig history. Recommendation: B2 fix first (clear win, 1 file BE), then B1 design (schema + cross-module pattern audit Contracts). Token ~28k.

- **2026-05-19 (S25 wrap — Plan AB Bug 1+2 audit + 6 follow-up plans em main solo):** Pre-Plan AB audit ~28K confirm root cause: Bug 1 Budget Adjust Handler ĐÃ log Changelog (Header+Update) nhưng FE HistoryTab filter strict TraLai-only loại. Bug 2 ApplyReturnModeAsync 4 mode KHÔNG add Changelog.Add() — chỉ caller LogTransitionAsync log phase transition. Recommended fix path: BE add log return mode + FE filter relax + Decision badge differentiation. **Subsequent em main solo follow-ups** (Plan AC..AF, KHÔNG re-spawn Investigator): AC capture pre-call Step/Level state + skipToFinal comment enrich + FE Decision badge; AC2 FE merge synthetic Reject rows từ Changelog (reversible recovery KHÔNG DB touch); AD drop misleading dual-phase badges + parse semantic next-target hint via regex `Chuyển phase X → Y` + comment keyword "Trả về"/"vượt cấp"; AE BE preventive batch UserName fix 9 Changelog.Add sites (Drafter+Detail+Quote+Adjust); AF FE userMap fallback từ embedded domain data PeDetailBundle (drafter+approvals+approvalFlow+levelOpinions+departmentOpinions) — no extra API fetch. **Patterns reusable Contract V2 audit recovery + Budget changelog UI:** (a) synthetic recovery FE merge từ existing audit table, (b) userMap fallback từ embedded domain data, (c) drop misleading badges + semantic hint via regex parsing, (d) preventive batch fix systemic gap. Cross-ref `feedback_service_hook_vs_endpoint` (audit log derived state) + new pattern user-level: FE merge synthetic + userMap fallback. **Tokens cumulative em main this session ~340K (mostly solo iterations, sub-agent leverage ~62K total).** **CICD result:** 7 commits `e23f51c..506cada` push remote, runs #215 FAIL (Plan M tests SQLite tie-break re-emerge) → #216 PASS (Chunk A2 SQLite tie-break fix) → #217-#221 PASS streak. Gotcha #48 SQLite tie-break pending docs.

- **2026-05-21 (S26 spawn Plan AG 5Q audit — PE List tree view feedback Tra Sol):** Bro UAT 2026-05-21 screenshot phàn nàn UI Duyệt NCC flat list "đám rừng" + propose Outlook-style folder template. Em main spawn Investigator audit 5Q: Q1 prod data scale (SSH auth fail, fallback code inspect — ~50-200 projects × 5-15 PE typical). Q2 Project entity `Master/Project.cs:5-14` extends AuditableEntity với Code+Name+dates+Budget+PM+Note, **MISSING MaxLength + navigation tới PE** → ready for Phase 2 ProjectPackage table mở rộng. Q3 PE List structure `PurchaseEvaluationsListPage.tsx:133` 3-panel grid `lg:grid-cols-[340px_1fr_360px]` flat `<ul><li>` line 199-252 + pageSize 50 + filter type/phase/awId/search. Q4 shadcn fe-user component GAP **THIẾU Accordion/Collapsible/Tree/Card/Badge** (chỉ Button/Dialog/Input/Label/Select/Textarea) → Phase 1 fallback HTML `<details>/<summary>` native + inline badge `<div>` (verified S24 Plan AA pattern). Q5 Mig 32 prep naming `AddProjectPackageTable` follow cumulative pattern. **Recommend Approach C Hybrid: Phase 1 FE-only group view ~160 LOC × 2 app (1-2 ngày) + Phase 2 ProjectPackage schema (3-5 ngày defer post-UAT). Implementer Case 2 cookie-cutter mirror 2 app ACCEPT.** Token ~30k.

- **2026-05-21 (S26 spawn Plan AI RAG distribution research — 4 study cases industry-validated):** Bro plan setup RAG cho 5 dự án cùng máy localhost share infrastructure. Investigator deep research 7Q: Anthropic patterns + community tools + multi-tenant architecture + distribution mechanism + auth + cost + sync. **Findings 4 study cases:** (1) **Cursor** — Merkle tree + Turbopuffer + 92% similarity reuse pattern, secret key derived Git commit hash, per-team index sharing cut indexing hours→seconds. (2) **Cline Memory Bank** — markdown + JIT retrieval + git-native sync. (3) **Continue.dev Hub** — slug-based YAML config sharing centralized. (4) **Sourcegraph Cody** — interesting anti-pattern, BỎ embeddings sang Search API + graph IR scale 100K+ repos enterprise (alternative if good search infra sẵn). **Multi-tenant 3 patterns:** Single index (pool, cheap), Per-tenant isolated (silo, expensive), Hybrid base+delta (Cursor pattern). **Distribution combo winner cho 5-dev team:** FastMCP HTTP server VPS Hetzner $15/tháng + git-sync embeddings snapshots committed to private repo. Auth JWT RS256 + role scopes + document-level ACL. Cost reality 5 dev ~$20/month vs cloud Qdrant $50/month. Sync git-based weekly cron (real-time chỉ cần khi team > 10 dev). **Surprise:** Voyage AI **200M tokens/month free tier cover 5 devs** comfortably — coi như chỉ tốn $15 VPS. **Anthropic standards 9/9 matched** + community best practices 6/7 matched (Sourcegraph alternative N/A cho memory-heavy). Plan AI architecture chốt với em main: User-level Global MCP (Pattern C — 1 server localhost serve 5 project) thay vì team VPS pattern (anh single dev 5 dự án). Token ~40k.

- **2026-05-11 (setup):** Investigator agent initialized. Baseline knowledge load complete (44 gotchas + 14 memory entries + 6 skills + 27 mig + 81 test pass cumulative). No investigations performed yet. Awaiting first SendMessage from em main.

---

## 🔄 Curate trigger

- Memory size > 25KB → archive recent entries to `archive/<period>.md`
- Duplicate entries detected → merge
- Stale > 3 months → remove

**Last curate: 2026-05-22 em main full curate** — archived 10 verbose entries (S21 → S24 Plan AA) → `archive/2026-05-q1.md`. KEEP: S25 audit + wrap (Bug 1+2 Changelog), S26 Plan AG + Plan AI RAG (2 spawn), setup baseline. Patterns + Active workflow schemas foundation preserved. Per `feedback_md_compact_narrative.md` §6.5 — archive preserves full verbose entries cho cross-session audit retrieve. Next curate trigger: > 25KB OR Plan B Contract V2 wire complete.