Step 0 Pre-Check: Project Type Detection

Detected Project Type

Primary Type: Full Stack MERN Fintech Platform (React 18 + Express 5.2.1 + MongoDB / Mongoose 9.1.5 + Double-Entry Accounting Ledger) Sub-Category: Financial Technology, Core Banking Ledger, ACID Fund Transfers, Payee Management, JWT Token Revocation Blacklist.

Evidence

• Backend Framework: Express 5.2.1 (server.js, src/app.js), Mongoose 9.1.5.
• Financial Architecture: Double-entry bookkeeping ledger (src/models/ledger.model.js), atomic fund transfers with session locking (src/controllers/transaction.controller.js).
• Security & Auth: bcryptjs 3.0.3, jsonwebtoken 9.0.3, Token Blacklist schema (src/models/blackList.model.js), constant-time password comparisons.
• Email Notifications: Nodemailer 7.0.12 for real-time transaction notification receipts.
• Frontend: React 18.2.0, React Router v6.17.0, Axios 1.6.0, Vite 5.0.0 (frontend/).
• Automated Tests: 17 passing tests in tests/high_value_features.test.js and tests/security_and_validation.test.js.

Documentation Track

• Full Stack MERN Track: Core banking ledger equations (Debit = Credit), ACID balance locking, IDOR security defenses, CSV statement generation, and React SPA authentication lifecycle.