docs: update CLAUDE_TODO.md with Session 3 progress

Author: JohannesHoppe

CLAUDE_TODO.md

@@ -961,3 +961,95 @@ Extension fully functional and tested.
 - Standard practice in Angular community
 - Default config matches Angular CLI generated code
 - Helps with merge conflicts (separate groups change less frequently together)
+
+---
+
+## Session 3 Update - Integration Tests Complete & GitHub Actions Passing
+
+**Date**: 2025-10-03
+**Status**: Phase 9 Complete ✅ | Ready for Phase 10 (Repository Migration) 🎉
+
+### Completed Work
+
+#### ✅ Phase 9.5: Integration Tests (20 comprehensive tests)
+- Created `/src/test/imports/import-manager.test.ts` with 20 test cases
+- Mock implementations for TextDocument, OutputChannel, ImportsConfig
+- **All 21 tests passing** (20 ImportManager + 1 sample test)
+
+**Critical Bugs Fixed During Testing:**
+1. **Usage Detection Bug**: Identifiers in variable initializers were being skipped
+   - Problem: `const x = AngularComponent` was skipping `AngularComponent`
+   - Fix: Only skip the declared NAME, not all identifiers in declaration
+   - Commit: `6900b82`
+
+2. **Sorting Disabled Bug**: Groups were still sorting internally
+   - Problem: `group.sortedImports` was called even when sorting disabled
+   - Fix: Use `group.imports` directly when sorting is disabled
+   - Commit: `6900b82`
+
+#### ✅ GitHub Actions CI/CD Setup
+- Created `.github/workflows/test.yml`
+- Tests on 3 platforms: **Ubuntu ✅ | macOS ✅ | Windows ✅**
+- Linux: xvfb-run works flawlessly
+- macOS: Fixed socket path length issue (103 char limit) with `/tmp/vscode-test-data`
+- Windows: Works out of the box
+- Commit: `6fb2815`
+
+#### ✅ Phase 9.6: Removed Debug Logging
+- Cleaned up all temporary debug logging from Session 2
+- Logger parameter kept for future debugging capabilities
+- All tests still passing
+- Commit: `0487a73`
+
+### Test Coverage Summary
+
+**20 Integration Tests Covering:**
+- ✅ Remove unused imports & specifiers
+- ✅ Keep excluded libraries (ignoredFromRemoval config)
+- ✅ Type-only imports (type annotations)
+- ✅ Local shadowing detection
+- ✅ Aliased imports (`import { A as B }`)
+- ✅ Namespace imports (`import * as Lib`)
+- ✅ Default imports
+- ✅ Mixed default + named imports
+- ✅ Import grouping (Plains → Modules → Workspace)
+- ✅ Alphabetical sorting within groups
+- ✅ Quote style configuration (single/double)
+- ✅ Semicolons configuration
+- ✅ Space in braces configuration
+- ✅ Blank lines between groups
+- ✅ Trailing /index removal
+- ✅ Disable removal option
+- ✅ Disable sorting option
+- ✅ String-only imports (always kept)
+
+### Architecture Decision: Integration Tests vs Pure Unit Tests
+
+**Decision**: Keep integration tests with VSCode test runner
+**Reason**:
+- xvfb on Linux works flawlessly (no complications)
+- macOS socket path issue easily resolved
+- Tests validate actual VSCode integration, not just logic
+- Fast execution (< 50ms for all 21 tests)
+- GitHub Actions runs smoothly on all platforms
+
+### Next Steps (Resume Here)
+
+1. **Phase 9.7: Final Manual Testing** (Current)
+   - Test extension in real VSCode with F5 (Extension Development Host)
+   - Test on actual Angular/TypeScript projects
+   - Verify all 22 manual test scenarios from TESTING.md
+   - Test all configuration options work correctly
+
+2. **Phase 10: Repository Migration**
+   - All tests passing ✅
+   - All features working ✅
+   - Ready to move `mini-typescript-hero/*` → repository root
+   - Remove old TypeScript Hero files
+   - Final commit and push
+
+3. **Phase 11: Publishing**
+   - Build .vsix package
+   - Test installation
+   - Publish to VSCode marketplace
+   - Create GitHub release