Add protocol message parsing and handlers for polecat→witness communication:
- POLECAT_DONE: Parse completion messages, create cleanup wisps
- HELP: Parse help requests, assess if Witness can help or escalate to Mayor
- MERGED: Parse refinery merge confirmations
- LIFECYCLE:Shutdown: Handle daemon-triggered shutdowns
- SWARM_START: Parse batch work initialization
Files added:
- internal/witness/protocol.go: Message classification and parsing
- internal/witness/handlers.go: Handler implementations with wisp/mail integration
- internal/witness/protocol_test.go: Unit tests for all parsing functions
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
fa2997c5ca