feat: Integrate active tool management across builder components; add deletableWallAsset state and related functionality

app/src/store/builder/useBuilderStore.ts

@@ -11,6 +11,7 @@ interface BuilderState {
 
     // Wall Asset
     selectedWallAsset: Object3D | null;
+    deletableWallAsset: Object3D | null;
 
     // Floor Asset
     selectedFloorAsset: Object3D | null;
@@ -59,6 +60,7 @@ interface BuilderState {
 
     // Setters - Wall Asset
     setSelectedWallAsset: (asset: Object3D | null) => void;
+    setDeletableWallAsset: (asset: Object3D | null) => void;
 
     // Setters - Floor Asset
     setSelectedFloorAsset: (asset: Object3D | null) => void;
@@ -113,6 +115,7 @@ export const useBuilderStore = create<BuilderState>()(
         hoveredLine: null,
 
         selectedWallAsset: null,
+        deletableWallAsset: null,
 
         selectedFloorAsset: null,
 
@@ -180,6 +183,12 @@ export const useBuilderStore = create<BuilderState>()(
             });
         },
 
+        setDeletableWallAsset(asset: Object3D | null) {
+            set((state) => {
+                state.deletableWallAsset = asset;
+            });
+        },
+
         // === Setters: Floor Asset ===
 
         setSelectedFloorAsset(asset: Object3D | null) {