v0.0.3

v0.0.3 — Session Chain & Architecture Cleanup

Fix: Add session chain (parent/child) relationship tracking and simplify connection architecture.

✨ Features

• Session chain: session_relations table with parent/child tracking
• Continuation chain tables and navigation queries
• Return child session IDs in session queries
• Single session lookup via get_session_with_project
• Session ID prefix filtering for FTS search
• Version consistency check for Agent auto-restart
• Agent disconnect callback & idempotent migration system
• Separate Response/Push channels & System type FFI

🔧 Maintenance

• Remove broadcast module, simplify to ConnectionManager
• Remove HookEvent broadcasting from protocol
• Make broadcaster non-blocking with try_send
• Fix deprecated function usage, clippy warnings

Full Changelog: v0.0.2...v0.0.3