Andrei 8e3567e3d6 Add rate limiting to API endpoints ...

Implemented comprehensive rate limiting for API security:

- Created custom Next.js-native rate limiter using in-memory store
- Added 5 rate limit configurations:
  - authLimiter: 5 requests/15min for login/register/password-reset
  - aiLimiter: 10 requests/hour for AI assistant queries
  - trackingLimiter: 30 requests/min for activity tracking
  - readLimiter: 100 requests/min for read-only endpoints
  - sensitiveLimiter: 3 requests/hour for sensitive operations

- Applied rate limiting to endpoints:
  - /api/auth/login, /api/auth/register, /api/auth/password-reset
  - /api/ai/chat
  - /api/tracking/feeding (GET and POST)

- Rate limit responses include standard headers:
  - RateLimit-Limit, RateLimit-Remaining, RateLimit-Reset
  - Retry-After header with seconds until reset

- Tested with 7 sequential requests - first 5 passed, last 2 blocked with 429

Note: Current implementation uses in-memory store. For production with
multiple instances, migrate to Redis-backed storage for distributed
rate limiting.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

2025-10-01 20:08:28 +00:00

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