ACT 0.7: sessions, three production bridges, and auth-via-args

Short summary

ACT 0.7 introduces session support for stateful components, three production-ready bridges (MCP, OpenAPI, HTTP) managing authentication per-session, and simplified host integration via WIT session-provider interface. Sessions enable secure credential flow and stateful connection management across component boundaries. Rust SDK includes new macros (#[session_open], #[session_close]) and SessionRegistry for simplified session lifecycle handling.

• •Session support for stateful components with opt-in WIT interface
• •Three production bridges (MCP, OpenAPI, HTTP) manage auth per-session, not per-call
• •Rust SDK macros and SessionRegistry simplify session lifecycle management

Generated with AI, which can make mistakes.