May 2026 — docker/cagent Key features delivered: - Secure SSRF-resistant HTTP client for remote skills registries: Implemented an SSRF-safe HTTP client to reject non-public addresses and prevent metadata exfiltration. Switched to httpclient.NewSafeClient (post-DNS resolution) and added tests that override the client via TestMain. Commitment reference: 6c260b16754a4bfb7d7329c61a6940e4b7d38878. - Error handling improvements using errors.Is: Refactored to use errors.Is for sentinel error checks, improving resilience to wrapped errors and aligning with existing patterns across the codebase. Commitment reference: 34a1f3f1f974aacf6c9252ab7a1506c66f35e2fa. - OAuth callback handling robustness: Reworked OAuth callback flow to drop stray callbacks and prevent blocking the handler, collapsing multiple channels into a single buffered resultCh. Added tests to verify duplicate callbacks do not block. Commitment reference: af0fa53486db98b1480744ffb48a6a20e241415e. - Skills caching improvements for privacy and RFC compliance (Cache-Control: no-store/no-cache): Implemented proper handling to avoid persisting no-store responses and adjusted no-cache semantics, with in-memory vs disk strategy clarified. Added tests for no-store/no-cache behavior and directive precedence. Commitments: e12fcf873d1b8b1c3c662bd623460d52f0a0a153 and 22661da574d2e423c6c7a276c86da286cad22500. Major bugs fixed: - Fixed metadata exfiltration risk stemming from SSRF exposure in remote skills fetches by introducing a safe client and DNS-aware checks. - Resolved potential server stalls and resource leaks in OAuth callback handling by ensuring only the first callback is delivered and subsequent ones are dropped, eliminating blocking goroutines. - Corrected cache-control behavior to align with RFCs, preventing unintended disk persistence of sensitive content and preserving correctness for in-process consumers. Overall impact and accomplishments: - Strengthened security posture (SSRF protection), privacy compliance (no-store/no-cache handling), and runtime reliability (robust error matching, non-blocking OAuth flow). - Increased test coverage around critical flows (duplicate OAuth callbacks, cache behavior), resulting in more predictable maintenance and lower support risk. Technologies/skills demonstrated: - Go: advanced error handling with errors.Is, non-blocking concurrency patterns (buffered channels), and test-driven development with test overrides. - Web security and RFC awareness: SSRF protection, RFC 9111/no-store semantics. - Observability and maintainability: clearer commit traceability and targeted unit tests for behavior guarantees.

October 2025 monthly summary for coleam00/archon highlighting key features delivered and major bug fixes that improve user experience and reliability. Focused on Document Management UI/UX enhancements, robust document saving error handling, and a feedback-driven development process.