fix(spaces): repair orphaned plan references

Issue: #244
User-Visible: yes

tsconfig.test.json

@@ -20,7 +20,7 @@
     "src/virtual-light-state.ts",
     "src/types.ts",
     "src/space-geometry.ts",
-    "src/space-order.ts",
+    "src/space-order.ts", "src/card-editor-validation.ts",
     "src/signing.ts", "src/initial-load.ts", "src/space-model-selection.ts", "src/space-dialog.ts",
     "src/visual-continuity.ts", "src/mode-transition.ts", "src/pointer-modality.ts",
     "src/render-device-snapshot.ts",
@@ -28,7 +28,7 @@
     "src/coordinate-canonicalization.ts",
     "src/serialized-write-queue.ts",
     "src/align-grid.ts",
-    "src/plan-optimizer.ts",
+    "src/plan-optimizer.ts", "src/space-reference-repair.ts", "src/space-deletion.ts",
     "src/plan-geometry-preflight.ts",
     "src/furniture.ts",
     "src/floating-surface.ts", "src/floating-surface-controller.ts", "src/help-behavior.ts",