fix(examples): stop label masks being clipped by node fills (#46)

Moves six clipped labels onto free connector segments and adds scripts/verify-geometry.py with tests, CI wiring, ADR 0005, and SKILL.md rule 6 so the defect cannot recur. Fixes #45.

.github/workflows/ci.yml

@@ -151,6 +151,16 @@ jobs:
         id: self_check
         run: python scripts/test-self-check.py
 
+      - name: Verify label geometry
+        if: always()
+        id: geometry
+        run: python scripts/verify-geometry.py --all
+
+      - name: Verify label geometry checker
+        if: always()
+        id: geometry_tests
+        run: python scripts/test-verify-geometry.py
+
       - name: Verify generated icon assets
         if: always()
         id: icons
@@ -183,4 +193,6 @@ jobs:
           echo "| Optional Motion Contract | ${{ steps.motion.outcome == 'success' && '✅ Passed' || (steps.motion.outcome == 'skipped' && '⏭️ Skipped' || '❌ Failed') }} |" >> $GITHUB_STEP_SUMMARY
           echo "| Docs & Routing Sync | ${{ steps.docs_sync.outcome == 'success' && '✅ Passed' || (steps.docs_sync.outcome == 'skipped' && '⏭️ Skipped' || '❌ Failed') }} |" >> $GITHUB_STEP_SUMMARY
           echo "| Packaged Self-Check | ${{ steps.self_check.outcome == 'success' && '✅ Passed' || (steps.self_check.outcome == 'skipped' && '⏭️ Skipped' || '❌ Failed') }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| Label Geometry | ${{ steps.geometry.outcome == 'success' && '✅ Passed' || (steps.geometry.outcome == 'skipped' && '⏭️ Skipped' || '❌ Failed') }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| Label Geometry Checker | ${{ steps.geometry_tests.outcome == 'success' && '✅ Passed' || (steps.geometry_tests.outcome == 'skipped' && '⏭️ Skipped' || '❌ Failed') }} |" >> $GITHUB_STEP_SUMMARY
           echo "| Primitive Icons & Documentation | ${{ steps.icons.outcome == 'success' && '✅ Passed' || (steps.icons.outcome == 'skipped' && '⏭️ Skipped' || '❌ Failed') }} |" >> $GITHUB_STEP_SUMMARY