# Implementer Agent — Persistent Memory

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

---

## 🎯 Role baseline

Code execution specialist for SOLUTION_ERP. Conditional WRITE (Case 1+2+3+5 ONLY). Tools: Read, Edit, Write, Bash, Skill, Grep, Glob. Output: commits + verification report.

## 🚨 STRICT scope auto-refuse criteria

REFUSE if ANY:
1. Schema design decisions needed (FK strategy / nullable / discriminator)
2. UX flow decisions needed (drawer vs tab vs modal)
3. Cross-stack > 2 layers tight coupling
4. Bug fix involving reasoning chain
5. Integration testing involving multiple components
6. < 30 min trivial task
7. First time pattern (no prior precedent)
8. Spec ambiguity > 20%

---

## 📋 Patterns proven (cross-session) — apply confidently

### Pattern 1: Per-chunk discipline 5-chunk A-E (Anthropic Case 2 orchestrator-workers)

Memory `feedback_per_chunk_commit` chốt:
- **Chunk A:** Domain entities + Migration (3-file rule)
- **Chunk B:** Application handlers (CQRS Commands + Queries + Validators)
- **Chunk C:** Service layer (workflow logic, business rules)
- **Chunk D:** API controllers + endpoints
- **Chunk E:** FE update (cả 2 app mirror) + Tests + Docs + commit final

Build + test pass mỗi chunk. Commit message format:
```
[CLAUDE] <scope>: Chunk <X> — <one-line summary>
<body>
Verify:
- Build pass (X warning, 0 error)
- N test pass (...)
Pending Chunk <Y+1>: <next>
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
```

### Pattern 2: 3-file rule EF migration (BẮT BUỘC commit đủ)

Memory + gotcha #17:
- `Migrations/{TS}_{Name}.cs` (Up + Down)
- `Migrations/{TS}_{Name}.Designer.cs` (snapshot at migration time)
- `Migrations/ApplicationDbContextModelSnapshot.cs` (current snapshot)

```bash
dotnet ef migrations add <Name> \
  --project src/Backend/SolutionErp.Infrastructure \
  --startup-project src/Backend/SolutionErp.Api

# Apply lên DB Dev:
dotnet ef database update --project src/Backend/SolutionErp.Infrastructure \
  --startup-project src/Backend/SolutionErp.Api \
  --connection "Server=(localdb)\MSSQLLocalDB;Database=SolutionErp_Dev;Trusted_Connection=True;TrustServerCertificate=true"

# Apply lên DB Design (catchup nếu thiếu):
dotnet ef database update --project src/Backend/SolutionErp.Infrastructure \
  --startup-project src/Backend/SolutionErp.Api
```

### Pattern 3: Audit reuse trước khi clone (memory `feedback_audit_reuse_before_clone`)

Khi user nói "clone X sang Y":
1. **Grep discriminator field** (`ApplicableType`, `Type`, `Kind` enum)
2. **Check Service / Handler / Controller** có hardcode type cụ thể không
3. **Check FE pages** có route dynamic typeCode hay hardcode
4. **Check menu key** (BE const + FE menuKeys.ts) — thường thiếu chính ở đây
5. Default reuse 80%, chỉ thêm menu key + sample seed (3 file ~60 LOC)

Bài học S17+ Clone B: 1 commit `937eb24`, deploy 1 phát chạy.

### Pattern 4: Service hook vs CRUD endpoint cho derived state (memory `feedback_service_hook_vs_endpoint`)

State X = derived của action Y → UPSERT trong handler Y, KHÔNG endpoint /X riêng.

Bài học S19 Mig 26 PE LevelOpinions: Service `ApproveV2Async` UPSERT row qua match `ApproverUserId == actorUserId` (fallback first khi Admin override). 0 endpoint mới.

### Pattern 5: FE mirror 2 app rule §3.9

Duplicate `fe-admin/` + `fe-user/` CÓ CHỦ ĐÍCH:
- Sửa fe-admin xong → mirror fe-user (tay)
- Khi breaking change rename prop → BẮT BUỘC `npm run build` × 2 app (memory `feedback_uat_skip_verify` exception)

### Pattern 6: VND format helpers + Phone/Email validate (S20 turn 4)

Inline mỗi file FE PE:
```ts
const parseVnd = (s: string): number => Number(s.replace(/[^\d]/g, '')) || 0
const formatVndInput = (n: number): string => (n > 0 ? n.toLocaleString('vi-VN') : '')
const PHONE_RE = /^0\d{9,10}$/
const EMAIL_RE = /^[^\s@]+@[^\s@]+\.[^\s@]+$/
const isValidPhone = (s: string) => !s || PHONE_RE.test(s.replace(/[\s\-.]/g, ''))
const isValidEmail = (s: string) => !s || EMAIL_RE.test(s)
```

---

## ⚠️ Anti-patterns observed (DO NOT)

1. ❌ Skip MEMORY.md update — knowledge tài sản
2. ❌ Bypass pre-commit hooks `--no-verify` (forbidden absolute)
3. ❌ `git add -A` hoặc `git add .` — specific files only
4. ❌ Touch files outside spec scope — anti-fiddle rule
5. ❌ Push remote autonomously cho heavy change — em main pushes (UAT iteration: confirm với em trước push)
6. ❌ Modify `SolutionErp.slnx` autonomously — em main updates khi thêm `.cs/.csproj`
7. ❌ Lower bar to match em main quality — Smart Friend Cognition anti-pattern
8. ❌ Proceed when spec ambiguous > 20% — return REFUSE với reason

---

## 🧠 SOLUTION_ERP conventions (auto-load via skills)

- **BE .NET 10:** PascalCase tiếng Anh entities + DTO records + command names. CQRS + MediatR + FluentValidation + AutoMapper. Repository qua `IApplicationDbContext`. `GlobalExceptionMiddleware` map exception → ProblemDetails (NO try-catch trong controllers).
- **FE React 19 + Vite 8 + TS 6:** Named export only (trừ App). TanStack Query. shadcn/ui copy-paste. TS6 `erasableSyntaxOnly` cấm `enum` → const-object pattern. UI 100% tiếng Việt. Mirror 2 app rule §3.9.
- **Test:** baseline 84/84 PASS (58 Domain + 26 Infra: 23 baseline + 3 PE WF guard regression S21 t3 gotcha #45). Phase 9 UAT skip per chunk theo memory `feedback_uat_skip_verify`. Stack xUnit + FluentAssertions 7.2 + EF SQLite 10 `TestApplicationDbContext` override `nvarchar(max) → TEXT`.
- **Build:** `dotnet build SolutionErp.slnx` clean 0 err + `npm run build` × 2 app pass.
- **Commit:** `[CLAUDE] <scope>: <message>` + Co-Authored-By Claude Opus 4.7 (1M context).

## Scopes (pick 1)

`Contract` · `PurchaseEvaluation` · `Budget` · `Form` · `Workflow` · `Supplier` · `Auth` · `Admin` · `Api` · `App` · `Domain` · `Infra` · `FE-Admin` · `FE-User` · `Tests` · `Docs` · `CICD` · `Scripts` · `Skill`

---

## 🔑 Pin versions (package pinning §2.8)

KHÔNG `*` / `latest`. Critical pins:
- MediatR `12.4.1` (14 fail DI)
- Swashbuckle `6.9.0` (10 conflict OpenApi 2)
- Node engines `>= 20` + CI pin `20.x` (bài học NamGroup, memory `feedback_node_cicd`)
- LibreOffice `25.8.6`
- @microsoft/signalr `8.0.7`

---

## 📅 Recent activity (last 10 FIFO)

- **2026-05-13 (S21 t3-t5, REFUSED 3×):** Em main classified all 3 turns as cross-stack reasoning chain (BE+FE+test tightly coupled) → REFUSE per criteria #3+#4 (cross-stack > 2 layers, bug fix reasoning chain). Bug fix gotcha #45 = bug + reasoning, F1+F2+F3 = schema design decision, Refactor per-NV = drastic refactor schema + Service + FE × 2 app. All correct REFUSE — em main solo executed. Strict scope criteria validated S21 t3-t5 — REFUSE rate 100% match Anthropic warning "tightly interdependent coding". Cumulative: 84 test, 29 mig, 45 gotcha. Pattern saved future invocation: per-NV permission scope split natural theo role + EF migration BACKFILL reorder pattern.
- **2026-05-11 (setup):** Implementer agent initialized. Baseline knowledge load complete (5 patterns proven cumulative S1-S20: per-chunk 5 chunk, 3-file rule Mig, audit-reuse clone, service hook derived state, FE mirror 2 app, VND format helpers). No implementations performed yet. Awaiting first SendMessage from em main. Strict scope auto-refuse criteria active.

---

## 🔄 Curate trigger

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

Last curate: 2026-05-11 (initial seed)
