Refactor: Remove deprecated API endpoints and implement new zone management features

- Deleted obsolete API files for wall items, layers, lines, and points.
- Introduced new zone management APIs including create, delete, and update functionalities.
- Enhanced zone state management in the store with new properties for height and color.
- Implemented 2D and 3D zone rendering components for better visualization.
- Added asset fetching functionalities for marketplace integration.
- Updated types to accommodate new zone properties and API responses.

app/src/store/builder/useBuilderStore.ts

@@ -24,6 +24,11 @@ interface BuilderState {
     sideMaterial: string;
     topMaterial: string;
 
+    // Zone Settings
+    selectedZone: Object3D | null;
+    zoneHeight: number;
+    zoneColor: string;
+
     // Decal Settings
     selectedDecal: Object3D | null;
 
@@ -59,6 +64,11 @@ interface BuilderState {
     setBevelStrength: (strength: number) => void;
     setFloorMaterial: (material: string, side: 'side' | 'top') => void;
 
+    // Setters - Zone
+    setSelectedZone: (zone: Object3D | null) => void;
+    setZoneHeight: (height: number) => void;
+    setZoneColor: (color: string) => void;
+
     // Setters - Decal
     setSelectedDecal: (decal: Object3D | null) => void;
 
@@ -103,6 +113,10 @@ export const useBuilderStore = create<BuilderState>()(
         sideMaterial: 'Material 1',
         topMaterial: 'Default Material',
 
+        selectedZone: null,
+        zoneHeight: 7,
+        zoneColor: 'blue',
+
         selectedDecal: null,
 
         selectedAisle: null,
@@ -201,6 +215,26 @@ export const useBuilderStore = create<BuilderState>()(
             });
         },
 
+        // === Setters: Zone ===
+
+        setSelectedZone: (zone: Object3D | null) => {
+            set((state) => {
+                state.selectedZone = zone;
+            });
+        },
+
+        setZoneHeight: (height: number) => {
+            set((state) => {
+                state.zoneHeight = height;
+            });
+        },
+
+        setZoneColor: (color: string) => {
+            set((state) => {
+                state.zoneColor = color;
+            });
+        },
+
         // === Setters: Decal ===
 
         setSelectedDecal: (decal: Object3D | null) => {