v0.1.1 — multi-language coverage, unified CLI, UX

Usability + multi-language accuracy over v0.1.0.

Highlights

• Coverage-based confidence for all supported languages — confidence=full now
  requires the changed lines to be exercised by the suite: Python (sys.settrace),
  JavaScript (V8 coverage), Go (go test -coverprofile), Rust (cargo-llvm-cov).
  Untested changes degrade → reject. Fail-open when coverage can't be measured.
• Precision parity via tree-sitter — comments, blank/brace lines, declaration
  signatures and imports don't require coverage (no false degrade on comment-only edits).
• Unified greenlock CLI — gate, check (gate git changes, no manual diff:
  --staged/--against), doctor, harden, init, mcp, --version, --apply.
• greenlock doctor — reports what Greenlock can verify in your repo.
• Actionable REJECT hints — tells you how to fix (run harden, --trust, …).
• GitHub Action posts the verdict — job summary + PR comment on reject.
• pre-commit framework support (.pre-commit-hooks.yaml).
• PyPI publishing workflow (Trusted Publishing) — once configured, pip install greenlock.

Notes / limits

• Go/Rust coverage parsers are unit-tested; end-to-end not yet validated against a live
  toolchain (fail-open keeps it safe).
• JS/Python coverage validated end-to-end. Not a sandbox unless --isolated.

Full details: CHANGELOG.md.