GitClean v0.1.0

GitClean v0.1.0 — first public release.

Highlights:

• Dry-run by default; nothing is deleted without --apply.
• Detects common build and cache directories.
• Protects Git-tracked files.
• Never touches .git metadata.
• Does not follow symlinks.
• Refuses dangerous targets such as filesystem root and home.
• No telemetry, network service, or backend.

Validation:

• cargo build --release: passed on Linux.
• 12/12 safety tests passed.
• Real dry-run and --apply smoke test passed.
• Main GitHub Actions CI passed.