groove-utilities-onboard

Generate a GROOVE.md file at the project root — a concise onboarding guide for contributors joining a project that uses groove. Also optionally appends a groove section to CONTRIBUTING.md if it exists.

Outcome

New contributors understand how groove works in this project: which commands to run, where logs live, and what the compound loop expects of them.

Acceptance Criteria

• GROOVE.md exists at the project root with project-specific config values substituted
• If CONTRIBUTING.md exists, it contains a "## Using groove" section linking to GROOVE.md
• Content reflects actual configured values (task backend, git strategy)

Steps