DLO-16: Reduce cli.py from 1073 to 83 lines by registering Click commands from commands/*.py modules
DLO-17: Migrate Config to Pydantic BaseModel for validation
DLO-18: Split planner.py (826 lines) into orchestration, path rendering, and duplicate handling modules
DLO-20: Unify type system — convert 14 dataclasses to Pydantic BaseModel, keep TypedDicts as JSON schema hints
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Stop tracking personal workflow artifacts at repo root, add CI and MIT
license, align README and agent skills with artifacts/ defaults, and
enable Ruff in dev/CI so releases are verifiable without local-only runs.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
