lcbp3/.devin/rules/README.md

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LCBP3 Agent Rules

Critical rules and guidelines for AI agents working on LCBP3-DMS.

Version

• Current: v1.9.6
• Last Updated: 2026-05-22
• Synced with: AGENTS.md (v1.9.6)

Purpose

This directory contains rule files that define:

• Project context and role expectations
• Critical Tier 1 rules (CI blockers)
• Coding standards and patterns
• Domain terminology and glossary
• Development workflows
• Security requirements
• AI integration architecture (ADR-023/023A)

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-023)
• Error handling strategy (ADR-007)
• Forbidden patterns: any, console.log, UUID misuse, id ?? '' fallback

🟡 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
• TypeScript Standards: Missing JSDoc, explicit types, or file headers

🟢 Tier 3 — SPECIALIZED WORK

Requires domain-specific knowledge:

• ADR-021 Integration: Workflow Engine & Context implementation
• AI Infrastructure: ADR-023/023A boundary enforcement and pipeline usage
• AI Runtime Layer: ADR-024 Intent Classification, ADR-025 Tool Layer, ADR-026 Chat UI, ADR-027 Admin Console
• Migration Pipeline: ADR-028 Staging Queue & post-migration cleanup
• Complex Business Logic: Multi-step workflows with state management
• Performance Optimization: Database queries, caching strategies, bulk operations

🔵 Tier 4 — GUIDELINES

Best practice — follow when possible:

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

Rule Files

Core Rules (Tier 1 - CRITICAL)

File	Purpose
00-project-context.md	Project context, role & persona, tier classification, specs folder organization
01-adr-019-uuid.md	UUID handling strategy — no parseInt, use publicId only
02-security.md	Security requirements, checklist, ADR-023/023A AI boundaries

Coding Standards

File	Purpose
03-typescript.md	TypeScript rules, file headers, i18n guidelines
06-backend-patterns.md	NestJS patterns, UUID resolution, API response patterns
07-frontend-patterns.md	Next.js patterns, RHF+Zod+TanStack Query, UUID handling

Domain & Workflow

File	Purpose
04-domain-terminology.md	DMS glossary, key spec files priority table
08-development-flow.md	Development workflow by work type (Critical/Normal/Quick Fix)

Compliance & Architecture

File	Purpose
05-forbidden-actions.md	Actions that must never be done, schema changes, UUID handling
09-commit-checklist.md	Pre-commit verification, commit message format
10-error-handling.md	ADR-007 error handling strategy, layered classification
11-ai-integration.md	ADR-023/023A AI architecture, 2-model stack, BullMQ 2-queue

Key Spec Files Priority

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-v1.9.0-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
ADR-023 AI	specs/06-Decision-Records/ADR-023-unified-ai-architecture.md	AI integration work
ADR-023A AI Model	specs/06-Decision-Records/ADR-023A-unified-ai-architecture.md	2-model stack, BullMQ 2-queue
ADR-024 Intent Class.	specs/06-Decision-Records/ADR-024-intent-classification-strategy.md	Pattern→LLM Fallback; Redis cache
ADR-025 AI Tool Layer	specs/06-Decision-Records/ADR-025-ai-tool-layer-architecture.md	Tool Registry; CASL-guarded
ADR-026 Chat UI	specs/06-Decision-Records/ADR-026-document-chat-ui-pattern.md	Side-panel; streaming SSE
ADR-027 AI Admin Console	specs/06-Decision-Records/ADR-027-ai-admin-console-and-dynamic-control.md	Dynamic control; admin-only
ADR-028 Migration Refactor	specs/06-Decision-Records/ADR-028-migration-architecture-refactor.md	Staging Queue; cleanup
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

Maintenance

When updating rules:

1. Check AGENTS.md version — Ensure rule files are synced
2. Update version numbers — Bump version in 00-project-context.md only (03-typescript.md no longer has version)
3. Review ADR references — Ensure all ADR references are current (ADR-023, ADR-023A, ADR-024~028)
4. Add new forbidden actions — When new patterns are identified as violations
5. Update key spec files table — When new ADRs or guidelines are added
6. Update Tier 3 SPECIALIZED WORK — When new domain-specific workflows are added

Related Documents

• AGENTS.md — Master agent configuration and context
• specs/06-Decision-Records/ — All Architecture Decision Records
• specs/05-Engineering-Guidelines/ — Backend, frontend, and testing guidelines