Give messaging clear exact subtree semantics (#1072)

Make application shutdown completion-driven (#1056)

Make messaging trees atomic ownership boundaries (#1048)

Move runtime packages under src namespace (#1029)

Make messaging cancellation terminal (#995)

Refactor messaging conversation state (#931)

Refactor messaging workflow architecture (#852)

Major refactor: API, providers, messaging, and Anthropic protocol

Major refactor done with minimax m2.5

Removed deprecated modules and updated imports

new linter rules and fixes

Phase 7: Directory restructuring (messaging/ and tests/)