v0.7.0a12

What's Changed

• feat: add tests and example for ExternalToolHandler and BEFORE_TOOL_USE hook
• fix: move inline ToolPolicy import to top-level in tools/external.py
• fix: persist external tool call events for Claude Code models
• docs: update CHANGELOG for versions a8 through a12
• fix: align postgres store test mocks with v2 relational schema
• fix: auto-migrate v1 JSONB schema to v2 relational schema in PostgresStore
• fix: review fixes — segment_stream yield guard, JSONB codec, multi-agent guard
• feat: human-in-the-loop tool handler + fix stream consumers for RoomEvent
• fix: pad mock TTS audio to even byte length for PCM validation
• feat: deliver_stream supports interleaved events during streaming
• fix: deliver all segment events inline during streaming
• fix: deliver tool call events to streaming channels during live streaming
• fix: broadcast tool call events to transport channels
• fix: use model_dump(mode='json') in PostgresStore for datetime serialization
• feat: add organization_id parameter to create_room
• refactor: replace JSONB blob schema with relational columns in PostgresStore
• feat: activity persistence — interleaved tool call events in the store
• feat: add tool_definitions support to HumanInputToolHandler
• fix: send session_started/session_ended messages to client via DataChannel
• fix: clear _barge_in_active on speech_end to prevent stale barge-in tags

Full Changelog: v0.7.0a11...v0.7.0a12