Move all 40 ML command files from core/cli/cmd/ml to go-ml/cmd/.
Commands self-register via init() + cli.RegisterCommands().
- Fixed stale go-ai/ml import in cmd_ab.go (now uses go-ml + go-mlx)
- Disabled cmd_train.go (needs go-mlx training API export)
- Removed all local replace directives, deps resolve from forge
- go build ./... passes cleanly
Co-Authored-By: Virgil <virgil@lethean.io>
