feat: add comprehensive E2E tests with Docker workflow
- Add comprehensive.e2e.test.ts: Full E2E tests covering 25+ converters
- Add format-matrix.e2e.test.ts: Format conversion matrix (70,000+ combinations)
- Add translation.e2e.test.ts: Multi-language translation tests (14 languages)
- Add docker-e2e-tests.yml: GitHub Actions workflow for Docker E2E tests
- Update run-bun-test.yml: Improved basic test workflow
- Add run-e2e-tests.sh: Local test runner script
- Add test scripts to package.json
Tests cover:
- Image formats (Inkscape, ImageMagick, Potrace, etc.)
- Document formats (Pandoc, LibreOffice, Calibre)
- Data formats (Dasel: JSON/YAML/TOML/XML/CSV)
- Translation (PDFMathTranslate, BabelDOC)
- Edge cases (Unicode, long content, special characters)