MCP Memory Service

# Phase 1: Dead Code Removal - Quick Reference **Issue:** #240 Code Quality Improvement **Phase:** 1 of 3 (Dead Code Removal) **Status:** Analysis Complete, Ready for Fix --- ## Quick Summary **Problem:** 27 dead code issues (2 critical) identified by pyscn **Root Cause:** Single premature `return False` at line 1358 in `scripts/installation/install.py` **Impact:** 77 lines of Claude Desktop configuration code never executed during installation **Fix:** Move unreachable code block outside exception handler **Estimated Improvement:** +5 to +9 points overall health score (63 → 68-72) --- ## Files Generated 1. **`phase1_dead_code_analysis.md`** - Complete analysis report with detailed breakdown 2. **`fix_dead_code_install.sh`** - Interactive script to guide you through the fix 3. **`README_PHASE1.md`** - This quick reference guide --- ## How to Use ### Option 1: Interactive Script (Recommended) ```bash # Run from project root directory bash scripts/quality/fix_dead_code_install.sh ``` The script will: - Create a backup branch - Guide you through manual code editing - Verify syntax after fix - Run tests (if available) - Show diff and commit message ### Option 2: Manual Fix 1. **Open file:** `scripts/installation/install.py` 2. **Go to line 1358** (inside except block) 3. **Change:** ```python except Exception as e: print_error(f"Failed to test backups directory: {e}") return False ``` **To:** ```python except Exception as e: print_error(f"Failed to test backups directory: {e}") print_warning("Continuing with Claude Desktop configuration despite write test failure") ``` 4. **Cut lines 1360-1436** (Claude Desktop config block) 5. **Paste after the except block** (dedent by 4 spaces) 6. **Save and verify:** ```bash python -m py_compile scripts/installation/install.py ``` --- ## Verification Steps After applying the fix: 1. **Syntax check:** ```bash python -m py_compile scripts/installation/install.py ``` 2. **Run tests:** ```bash pytest tests/unit/test_installation.py -v ``` 3. **Test installation:** ```bash python scripts/installation/install.py --storage-backend sqlite_vec cat ~/.claude/claude_desktop_config.json | grep mcp-memory-service ``` 4. **Re-run pyscn:** ```bash pyscn analyze . --output .pyscn/reports/ ``` 5. **Check new health score** in the HTML report --- ## Expected Results ### Before Fix - **Health Score:** 63/100 (Grade C) - **Dead Code Issues:** 27 (2 critical) - **Dead Code Score:** 70/100 - **Claude Desktop Config:** Never created during installation ### After Fix - **Health Score:** 68-72/100 (Grade C+) - **Dead Code Issues:** 0 - **Dead Code Score:** 85-90/100 - **Claude Desktop Config:** Automatically created during installation --- ## Commit Message Template ``` fix: move Claude Desktop configuration out of unreachable code block Fixes issue #240 Phase 1 - Dead Code Removal The configure_paths() function had a 'return False' statement inside an exception handler that made 77 lines of Claude Desktop configuration code unreachable. This caused installations to skip Claude Desktop setup. Changes: - Move Claude Desktop config code (lines 1360-1436) outside except block - Replace premature 'return False' with warning message - Ensure config runs regardless of write test result Impact: - Resolves all 27 dead code issues identified by pyscn - Claude Desktop now configured automatically during installation - Dead code score: 70 → 85-90 (+15 to +20 points) - Overall health score: 63 → 68-72 (+5 to +9 points) Testing: - Syntax validated with py_compile - Unit tests pass: pytest tests/unit/test_installation.py - Manual installation tested with sqlite_vec backend - pyscn re-analysis confirms 0 dead code issues Co-authored-by: pyscn analysis tool ``` --- ## Next Steps After Phase 1 Once Phase 1 is complete and merged: 1. **Run pyscn again** to get updated health score 2. **Celebrate!** 🎉 You've eliminated all dead code issues 3. **Move to Phase 2:** Low-hanging complexity reductions - Target complexity score improvement (currently 40/100) - Focus on functions with complexity 15-25 (easier wins) 4. **Move to Phase 3:** Duplication removal - Target duplication score improvement (currently 30/100) - Focus on test duplication (identified in pyscn report) --- ## Troubleshooting ### Syntax errors after fix - Check indentation (should match `try` statement level) - Verify no lines were accidentally deleted - Restore from backup: `cp scripts/installation/install.py.backup scripts/installation/install.py` ### Tests fail after fix - Review test expectations - they may need updating - Check if tests mock the file write test - Tests may be outdated if they expect old behavior ### pyscn still shows dead code - Verify the `return False` was changed to a warning - Confirm code block was moved OUTSIDE the except block - Check that no extra `return` statements were left behind --- ## Reference Documents - **Full Analysis:** `scripts/quality/phase1_dead_code_analysis.md` - **pyscn Report:** `.pyscn/reports/analyze_20251123_214224.html` - **Issue Tracker:** GitHub Issue #240 --- ## Contact Questions? See the detailed analysis in `phase1_dead_code_analysis.md` or refer to Issue #240 on GitHub. **Time Estimate:** 10-15 minutes for fix + verification **Difficulty:** Easy (code movement, no logic changes) **Risk:** Low (code was never executing anyway)