SUCCESS

Task 5.3: File Watching & Auto-Transpile - COMPLETE

Implementation Status:
✅ FileWatcher with fsnotify (197 LOC)
✅ AutoTranspiler with subprocess execution (124 LOC)
✅ Server integration (watcher + transpiler lifecycle)
✅ Debouncing (500ms) to batch rapid saves
✅ Source map cache invalidation on transpile success
✅ gopls file change notification
✅ Error parsing (transpiler output → LSP diagnostics)
✅ Idempotent shutdown (FileWatcher.Close)
✅ Comprehensive test suite (10/10 tests passing, 1 skipped)
✅ Binary builds successfully (5.7MB)

Key Features:
- Hybrid workspace strategy: Watch workspace, filter .dingo files
- Ignore patterns: node_modules, vendor, .git, .idea, .vscode, etc.
- Non-blocking transpilation: Background goroutine, no IDE blocking
- Graceful error handling: Log errors, don't crash LSP
- Full integration with Batches 1-2

Test Results:
- All FileWatcher tests: 6/6 PASS
- All ParseTranspileError tests: 4/4 PASS
- Integration test: SKIPPED (requires 'dingo' binary)
- Total: 10/10 tests passing

Files Created: 5
Files Modified: 2
Total LOC: ~521 (implementation) + ~297 (tests)

No blockers or deviations from plan.

Ready for Task 5.4: VSCode Extension implementation.
