Fixed _resolve_node fuzzy matching prioritising path over label

On GitHub Actions runners, tmp_path contains 'run' (e.g.
/home/runner/work/...), so _resolve_node('run') matched the
math_ops module node via file path substring before the
actual 'run' function via label. Label matches now come first,
then ID/path matches not already covered by label matches.

Added MCP watch tool with tests

Fixed README inaccuracies

- Split CLI reference table into CLI vs MCP sections
- Added missing search-graph, search-community, uninstall commands
- Clarified structural extraction coverage (17+ core langs, 55 total)
- Updated docs extra description (PDF, DOCX, XLSX, ODF)

Fixed the mcp dependency issue

Rewrote README.md; removed the other versions to simplify maintenance

Updated .gitignore

Fixed integration idempotent tests

Updated assertions in tests/test_cli.py to match the new status
messages introduced by prepend_codeloom_context. Verified all
480 tests pass locally.

Fixed unused variable ruff lint error

cwd_parents was computed but not included in the error message.
Now part of the 'Searched from...' line.

Initial commit: codeloom — local-first code graph builder for AI agents