feat(openqc): add v1 docstring/wiki/raw traceability report (#92)

[newtontech]

Summary

• Add deterministic OpenQC v1 docstring/wiki/raw traceability report generator
• Add reports/docstring-wiki-raw-traceability.json with schemaVersion: openqc.lsp.traceability.v1
• Add 22 tests covering report shape, repo-relative paths, rule ID format, linked counters, and strict validation

Test Plan

• python scripts/check_docstring_traceability.py generates valid report
• python scripts/check_docstring_traceability.py --strict validates in strict mode
• 22 new tests in tests/test_docstring_traceability.py all pass
• Full test suite (1041 tests) passes
• make format / make lint / make typecheck clean

Contract Compliance

• schemaVersion: openqc.lsp.traceability.v1
• Report path: reports/docstring-wiki-raw-traceability.json
• Rule IDs: VASP-<FILE_ROLE>-<CATEGORY>-NNN format
• All paths repository-relative (no absolute /Users/... paths)
• summary.docstringsLinked == summary.docstringsTotal
• brokenWikiLinks, wikiSourcesWithoutRaw, rawManifestFailures are zero

Closes #92

[newtontech]

Final verification before merge:\n- python3 scripts/check_docstring_traceability.py --strict passed.\n- python3 -m pytest tests/test_docstring_traceability.py -q -> 21 passed.\n- python3 -m black --check ., python3 -m ruff check ., and python3 -m mypy src tests passed locally.\n- Report was corrected to match OpenQC v1 validator fields: docstrings[].path/wikiPath/symbol, wikiSources[].wikiPath/rawPath/sourceUrl, ruleIds[].sourcePath, sourceUrls[].rawPath/url, and rawManifest.ok.\n- GitHub checks are green: contract, governance-smoke, quality gates, Python 3.9-3.12, import smoke, VS Code extension.