## Summary
- Replace `dorny/paths-filter` with `cargo tree`-based detection for more accurate dependency tracking in the conformance CI job
- Extract common file detection and utility functions into reusable modules
- Eliminate code duplication across CI scripts
## Changes
### New Files
- **`.github/scripts/get-changed-files.js`** - Reusable module for detecting changed files from GitHub events (PR/push)
- **`.github/scripts/check-conformance-changes.js`** - Conformance detection using `cargo tree -p oxc_coverage -p oxc_transform_conformance -p oxc_prettier_conformance`
- **`.github/scripts/utils.js`** - Shared utilities:
- `exec()` - Shell command execution with error handling
- `getCrateDependencies()` - Generic cargo tree wrapper
- `checkFilesAffectCrates()` - File-to-crate impact checking
### Modified Files
- **`.github/scripts/generate-benchmark-matrix.js`** - Refactored to use shared modules
- **`.github/workflows/ci.yml`** - Conformance job now uses `check-conformance-changes.js` instead of `dorny/paths-filter`
## Benefits
- **More accurate**: Uses actual crate dependencies from `cargo tree` instead of static path patterns
- **Maintainable**: Shared utilities eliminate code duplication
- **Extensible**: Easy to add new scripts that need similar functionality
- **Consistent**: Same file detection logic across all CI scripts
## Test Plan
- [x] Verify CI workflow syntax is valid
- [ ] Monitor first PR run to ensure conformance detection works correctly
- [ ] Check that conformance is skipped when appropriate (e.g., linter-only changes)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Cameron