Prometheus Metrics

Prometheus metrics endpoint for scraping. Returns metrics in Prometheus text format.

Metrics exposed:

• http_requests_total: Total HTTP requests by method, endpoint, and status
• http_request_duration_seconds: HTTP request latency histogram
• agent_tasks_active: Currently active tasks per agent
• http_request_size_bytes: HTTP request body size summary
• http_response_size_bytes: HTTP response body size summary
• http_requests_in_flight: Current number of HTTP requests being processed