Virgil split go-ai into standalone modules (go-agentic, go-ml, go-mlx,
go-rag). This migrates all CLI imports to the new module paths and fixes
API mismatches from the split.
Key changes:
- go-ai/agentic → go-agentic (cmd/ai, cmd/dev)
- go-ai/ml → go-ml (31 files in cmd/ml)
- go-ai/rag → go-rag (3 files in cmd/rag)
- go-ai/mlx → go-mlx (1 file)
- Fix go.work path (../core → ../go)
- Add all split repos to go.work and go.mod
- Simplify daemon to goroutine-based MCP (remove missing supervisor)
- Wire go-agentic SQLiteRegistry into dispatch watch (--agent-id flag)
- Add `core ai agent fleet` command for local registry status
- Fix rag collections API (PointCount, Status string)
- Fix ml live/expand-status to use available go-ml API
Co-Authored-By: Charon <charon@lethean.io>