#67 API: Manage Rate Limits

Implement endpoints to configure rate limiting per tenant. Endpoints: - GET /api/v1/security/rate-limits - Get current rate limit settings - PATCH /api/v1/security/rate-limits - Update rate limit settings Rate Limit Settings: - api_requests_per_minute: int (default: 60) - api_requests_per_hour: int (default: 1000) - workflow_submissions_per_hour: int (default: 100) - login_attempts_per_minute: int (default: 5) - token_generations_per_day: int (default: 10) Required Permissions: tenant_admin or system_admin Implementation Requirements: - Validate limits are reasonable - system_admin can override any limit - tenant_admin bounded by system limits - Real-time enforcement - Return current usage with limits With ultra attention to details and correctness. Before closing: write comment summarizing implementation with screenshot.