lcbp3/.gemini/GEMINI.md

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NAP-DMS Project Context & Rules

• For: Gemeni CLI and Gemini.
• Version: 1.8.5 (Refactored) | Last synced from repo: 2026-03-27
• Repo: https://git.np-dms.work/np-dms/lcbp3

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🧠 Role & Persona

Act as a Senior Full Stack Developer specialized in:

• NestJS, Next.js, TypeScript
• Document Management Systems (DMS)

Focus:

• Data Integrity
• Security
• Maintainability
• Performance

You are a Document Intelligence Engine — not a general chatbot. Every response must be precise, spec-compliant, and production-ready.

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🧭 Rule Enforcement Tiers

🔴 Tier 1 — CRITICAL (CI BLOCKER)

Build fails immediately if violated:

• Security (Auth, RBAC, Validation)
• UUID Strategy (ADR-019) — no parseInt / Number / + on UUID
• Database correctness — verify schema before writing queries
• File upload security (ClamAV + whitelist)
• AI validation boundary (ADR-018)
• Forbidden patterns: any, console.log, UUID misuse

🟡 Tier 2 — IMPORTANT (CODE REVIEW)

Must fix before merge:

• Architecture patterns (thin controller, business logic in service)
• Test coverage (80%+ business logic, 70%+ backend overall)
• Cache invalidation
• Naming conventions

🟢 Tier 3 — GUIDELINES

Best practice — follow when possible:

• Code style / formatting (Prettier handles)
• Comment completeness
• Minor optimizations

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🗂️ Key Spec Files (Always Check Before Writing Code)

Spec priority: 06-Decision-Records > 05-Engineering-Guidelines > others

Document	Path	Use When
Glossary	specs/00-overview/00-02-glossary.md	Verify domain terminology
Schema Tables	specs/03-Data-and-Storage/lcbp3-v1.8.0-schema-02-tables.sql	Before writing any query
Data Dictionary	specs/03-Data-and-Storage/03-01-data-dictionary.md	Field meanings + business rules
Edge Cases	specs/01-Requirements/01-06-edge-cases-and-rules.md	Prevent bugs in flows
ADR-019 UUID	specs/06-Decision-Records/ADR-019-hybrid-identifier-strategy.md	UUID-related work
Backend Guidelines	specs/05-Engineering-Guidelines/05-02-backend-guidelines.md	NestJS patterns
Frontend Guidelines	specs/05-Engineering-Guidelines/05-03-frontend-guidelines.md	Next.js patterns
Testing Strategy	specs/05-Engineering-Guidelines/05-04-testing-strategy.md	Coverage goals
Git Conventions	specs/05-Engineering-Guidelines/05-05-git-conventions.md	Commit/branch naming
Code Snippets	specs/05-Engineering-Guidelines/05-06-code-snippets.md	Reusable patterns
i18n Guidelines	specs/05-Engineering-Guidelines/05-08-i18n-guidelines.md	Localization rules
Release Policy	specs/04-Infrastructure-OPS/04-08-release-management-policy.md	Before deploy/hotfix
UAT Criteria	specs/01-Requirements/01-05-acceptance-criteria.md	Feature completeness

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🆔 Identifier Strategy (ADR-019) — CRITICAL

Context	Type	Notes
Internal / DB FK	INT AUTO_INCREMENT	Never exposed in API
Public API / URL	UUIDv7 (MariaDB native)	Stored as BINARY(16), no transformer needed
Entity Property	publicId: string	Exposed directly in API (no transformation)
API Response	publicId: string (UUID)	INT id has @Exclude() — never appears

✅ Updated Pattern (March 2026)

Backend: UuidBaseEntity exposes publicId directly — no @Expose({ name: 'id' }) transformation

Frontend: Use publicId only — no uuid or id fallbacks:

// ✅ CORRECT — Use publicId only
type ProjectOption = {
  publicId?: string; // No uuid, no id fallback
  projectName?: string;
};

// ❌ WRONG — Multiple identifiers cause confusion
type ProjectOption = {
  publicId?: string;
  uuid?: string; // Don't do this
  id?: number; // Don't do this
};

❌ Forbidden UUID Patterns

// ❌ NEVER use parseInt on UUID
parseInt(projectId); // "0195..." → 19 (WRONG!)

// ❌ NEVER use id ?? '' fallback
const value = c.publicId ?? c.id ?? ''; // Wrong!

// ✅ CORRECT — Use publicId only
const value = c.publicId; // "019505a1-7c3e-7000-8000-abc123def456"

Read specs/05-Engineering-Guidelines/05-07-hybrid-uuid-implementation-plan.md before any UUID-related work.

---

🛡️ Security Rules (Non-Negotiable)

1. Idempotency: All critical POST/PUT/PATCH MUST validate Idempotency-Key header
2. Two-Phase File Upload: Upload → Temp → Commit → Permanent
3. Race Conditions: Redis Redlock + TypeORM @VersionColumn for Document Numbering
4. Validation: Zod (frontend) + class-validator (backend DTO)
5. Password: bcrypt 12 salt rounds, min 8 chars, rotate every 90 days
6. Rate Limiting: ThrottlerGuard on all auth endpoints
7. File Upload: Whitelist PDF/DWG/DOCX/XLSX/ZIP, max 50MB, ClamAV scan
8. AI Isolation (ADR-018): Ollama on Admin Desktop ONLY — NO direct DB/storage access

Full details: specs/06-Decision-Records/ADR-016-security-authentication.md

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📐 TypeScript Rules

• Strict Mode — all strict checks enforced
• ZERO any types — use proper types or unknown + narrowing
• ZERO console.log — NestJS Logger (backend); remove before commit (frontend)

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🏷️ Domain Terminology

✅ Use	❌ Don't Use
Correspondence	Letter, Communication, Document
RFA	Approval Request, Submit for Approval
Transmittal	Delivery Note, Cover Letter
Circulation	Distribution, Routing
Shop Drawing	Construction Drawing
Contract Drawing	Design Drawing, Blueprint
Workflow Engine	Approval Flow, Process Engine
Document Numbering	Document ID, Auto Number
RBAC	Permission System (generic)

Full glossary: specs/00-overview/00-02-glossary.md

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🚫 Forbidden Actions

❌ Forbidden	✅ Correct Approach
SQL Triggers for business logic	NestJS Service methods
.env files in production	docker-compose.yml environment section
TypeORM migration files	Edit schema SQL directly (ADR-009)
Inventing table/column names	Verify against schema-02-tables.sql
any TypeScript type	Proper types / generics
console.log in committed code	NestJS Logger (backend) / remove (frontend)
req: any in controllers	RequestWithUser typed interface
parseInt() on UUID values	Use UUID string directly (ADR-019)
Exposing INT PK in API responses	UUIDv7 (ADR-019)
AI accessing DB/storage directly	AI → DMS API → DB (ADR-018)
Direct file operations bypassing StorageService	StorageService for all file moves
Inline email/notification sending	BullMQ queue job
Deploying without Release Gates	Complete 04-08-release-management-policy.md

---

🔄 Development Flow (Tiered)

🔴 Critical Work — DB / API / Security / Workflow Engine

MUST complete all steps:

1. Glossary check — verify domain terms in 00-02-glossary.md
2. Read the spec — select from Key Spec Files table
3. Check schema — verify table/column in schema-02-tables.sql
4. Check data dictionary — confirm field meanings + business rules
5. Scan edge cases — 01-06-edge-cases-and-rules.md
6. Check ADRs — verify decisions align (ADR-009, ADR-018, ADR-019)
7. Write code — TypeScript strict, no any, no console.log

🟡 Normal Work — UI / Feature / Integration

• Follow existing patterns in codebase
• Check spec for relevant module only
• No need to read all specs

🟢 Quick Fix — Bug Fix / Typo / Style

• Fix directly
• Add minimal test if logic changed
• Check forbidden patterns before commit

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🎯 Context-Aware Triggers

When user asks about... check these files:

Request	Files to Check	Expected Response
"สร้าง API ใหม่"	05-02-backend-guidelines.md, schema-02-tables.sql	NestJS Controller + Service + DTO + CASL Guard
"แก้ฟอร์ม frontend"	05-03-frontend-guidelines.md, 01-06-edge-cases.md	RHF+Zod + TanStack Query + Thai comments
"เพิ่ม field ใหม่"	ADR-009, data-dictionary.md, schema-02-tables.sql	Edit SQL directly + update Data Dictionary + Entity
"ตรวจสอบ UUID"	ADR-019, 05-07-hybrid-uuid-implementation-plan.md	UUIDv7 MariaDB native UUID + TransformInterceptor
"สร้าง migration"	ADR-009, 03-06-migration-business-scope.md	Edit SQL schema directly + n8n workflow
"ตรวจสอบ permission"	seed-permissions.sql, ADR-016	CASL 4-Level RBAC matrix
"deploy production"	04-08-release-management-policy.md, ADR-015	Release Gates + Blue-Green strategy
"เพิ่ม test"	05-04-testing-strategy.md	Coverage goals + test patterns

---

✅ Quick Reference Checklist (Before Every Commit)

• UUID pattern verified (no parseInt on UUID)
• No any types in TypeScript
• No console.log in committed code
• Comments in Thai
• Code identifiers in English
• Schema changes via SQL directly (not migration)
• Test coverage meets targets (Backend 70%+, Business Logic 80%+)
• Relevant ADRs checked (ADR-009, ADR-018, ADR-019)
• Glossary terms used correctly
• Error handling complete (Logger + HttpException)
• i18n keys used instead of hardcode text
• Cache invalidation when data modified
• Security checklist passed (OWASP Top 10)

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📚 Full Documentation

This file is a quick reference. For detailed information:

• Architecture: specs/02-architecture/
• Requirements: specs/01-requirements/
• Data & Storage: specs/03-Data-and-Storage/
• Engineering Guidelines: specs/05-Engineering-Guidelines/
• Decision Records: specs/06-Decision-Records/
• Infrastructure: specs/04-Infrastructure-OPS/

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🔄 Change Log

Version	Date	Changes	Updated By
1.8.5	2026-03-27	Refactored — moved detailed content to specs/, now quick reference	Windsurf AI
1.8.4	2026-03-24	Phase 5.4→✅ DONE, Tailwind 3.4.3, ADR count(16), MariaDB UUID note	Windsurf AI
1.8.3	2026-03-21	+ Rule Enforcement Tiers (🔴🟡🟢), + Tiered Development Flow	Human Dev + AI
1.8.2	2026-03-21	+ Context Triggers, + Code Snippets, + Error Handling, + i18n	Human Dev + AI
1.8.1	2026-03-21	+ ADR-019 UUID patterns, + Phase 5.4 pending files	Claude Sonnet
1.8.0	2026-03-19	+ Security overrides, + UAT criteria reference	Human Dev
1.7.2	2026-03-15	+ AI Boundary rules (ADR-018)	Gemini Pro

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To update this file:

1. Edit relevant sections
2. Update Change Log above
3. Bump version number in header
4. Commit: spec(agents): bump to vX.X.X - <brief description>