docs(be): update comprehensive README with layered architecture, 24 modules, and API reference (!35) · Merge Requests · ThinhNC / finwise-miniapp-be

docs(be): update comprehensive README with layered architecture, 24 modules, and API reference

Key Changes & Additions

Backend (`finwise-miniapp-be/README.md`)

Layered Architecture & Invariants: Documented the strict Route -> Validation -> Controller -> Service -> Repository -> Database flow, ACID balance invariants, UTC+7 Asia/Ho_Chi_Minh timezone boundary rules, and the Zero Hallucination AI DSL policy.
24 Complete Modules & API Reference: Comprehensive reference table of all /api/v1/... endpoints across Auth, Dynamic RBAC 2.0, Audit Logs, Wallets, Transactions, Cash Flow Forecast, Anomaly Detection, Subscriptions, Developer API Keys, Webhooks, and Cloudflare R2 Uploads.
Infrastructure & Caching: Detailed Redis distributed locking (ioredis), background cron/worker architecture, and Google Gemini AI token usage tracking.
Environment & Setup: Full table of environment variables, seed credentials (admin@finwise.local, etc.), Jest/Supertest testing commands, and Docker Compose / PM2 deployment guides.

Monorepo Root (`README.md`)

Created an overarching repository README connecting frontend, backend, deep-dive architecture docs, ERD references, and quickstart commands.

## Key Changes & Additions

### Backend (`finwise-miniapp-be/README.md`)
- **Layered Architecture & Invariants**: Documented the strict `Route -> Validation -> Controller -> Service -> Repository -> Database` flow, ACID balance invariants, UTC+7 `Asia/Ho_Chi_Minh` timezone boundary rules, and the Zero Hallucination AI DSL policy.
- **24 Complete Modules & API Reference**: Comprehensive reference table of all `/api/v1/...` endpoints across Auth, Dynamic RBAC 2.0, Audit Logs, Wallets, Transactions, Cash Flow Forecast, Anomaly Detection, Subscriptions, Developer API Keys, Webhooks, and Cloudflare R2 Uploads.
- **Infrastructure & Caching**: Detailed Redis distributed locking (`ioredis`), background cron/worker architecture, and Google Gemini AI token usage tracking.
- **Environment & Setup**: Full table of environment variables, seed credentials (`admin@finwise.local`, etc.), Jest/Supertest testing commands, and Docker Compose / PM2 deployment guides.

### Monorepo Root (`README.md`)
- Created an overarching repository README connecting frontend, backend, deep-dive architecture docs, ERD references, and quickstart commands.