Add TAP log ingest support

[skyswordw]

Summary

• Add TAP as a detected framework for log ingest.
• Extract TAP failing test lines, YAML-ish diagnostics, and summary counts into report sections.
• Add regression coverage for simple TAP output with nested diagnostics.

Closes #15.

Testing

• npx vitest run test/detect.test.ts test/extract.test.ts
• npm test
• npm run typecheck
• npm run build
• git diff --check

Notes

This only adds parser/detection coverage for TAP log output. It does not change CLI options or generated report file locations.