refactor: remove 28K lines of dead/legacy code
Removed:
- pkg/loop/ — superseded by Claude native tool use
- pkg/lifecycle/ — 14K lines, old PHP API polling client
- pkg/jobrunner/ — old CodeRabbit orchestration (rebuilt in verify.go)
- pkg/orchestrator/ — old AgentCI config (replaced by agents.yaml)
- pkg/workspace/ — empty stub
- pkg/plugin/ — empty stub
- cmd/agent/ — old fleet management CLI
- cmd/dispatch/ — old polling dispatcher
- cmd/workspace/ — unused CLI
- cmd/tasks/ — unused CLI
- cmd/taskgit/ — unused CLI
120 files deleted, 28,780 lines removed.
Remaining: 31 Go files, 6,666 lines — cmd/core-agent + pkg/agentic + pkg/brain + pkg/monitor.
All functionality preserved in the new MCP-native architecture.
Co-Authored-By: Virgil <virgil@lethean.io>