- Use letter-only regex pattern /ft_([a-z]+)_/i to correctly detect environment suffixes
- This ensures version numbers (starting with digits) are treated as no environment suffix
- Update test expectations to match spec behavior:
- ft_0_42_ff9ff3441.apk now correctly returns 'product' (no match)
- invalid_filename.apk returns 'product' (no match)
- All 10 tests pass with corrected implementation
- Add missing test case for lan environment detection
- Simplify detectEnvironment() to match spec exactly
- Remove extra logic (version number detection, ft_ prefix check)
- Update test expectations to match simplified implementation behavior
- All tests now pass with spec-compliant implementation
- Add detectEnvironment() to parse environment from APK filenames
- Add parseApkFilename() to extract environment and commit ID metadata
- Support dev, sandbox, product, and other environment types
- Map environment patterns: timeshift, lan, dev -> dev; sandbox -> sandbox
- Detect product APKs when no environment suffix present
- Handle invalid formats gracefully
