fix: Refactor 3D Scale to 1.0 and Visuals to 1:1

frontend/src/components/facility3d/Room3DViewer.tsx

@@ -75,22 +75,22 @@ export function Room3DViewer({ room, visMode = 'STANDARD', onPlantClick }: Room3
             <Canvas
                 shadows
                 orthographic
-                camera={{ position: [100, 100, 100], zoom: 60, near: -500, far: 2000 }}
+                camera={{ position: [100, 100, 100], zoom: 10, near: -500, far: 2000 }}
                 className="w-full h-full"
             >
                 <ambientLight intensity={0.7} />
                 <directionalLight position={[10, 50, 20]} intensity={1.5} castShadow />
 
-                {/* Grid Floor for context - Scaled to match RoomObject (0.1 scale) */}
+                {/* Grid Floor for context - Scaled 1:1 */}
                 <Grid
                     infiniteGrid
-                    fadeDistance={50}
+                    fadeDistance={100}
                     sectionColor="#10b981"
                     cellColor="#059669"
                     sectionThickness={1}
                     cellThickness={0.5}
                     position={[0, -0.01, 0]}
-                    args={[20, 20]}
+                    args={[60, 60]}
                 />
 
                 <Center top>
@@ -114,13 +114,13 @@ export function Room3DViewer({ room, visMode = 'STANDARD', onPlantClick }: Room3
                     enableRotate={false}
                     enableZoom={true}
                     enablePan={true}
-                    minZoom={10}
-                    maxZoom={200}
+                    minZoom={5}
+                    maxZoom={50}
                 />
             </Canvas>
 
             <div className="absolute bottom-4 right-4 bg-slate-900/90 backdrop-blur-md px-3 py-1.5 rounded-md border border-emerald-500/20 text-xs font-mono text-emerald-400 pointer-events-none shadow-xl">
-                VIEW: ISOMETRIC // FIXED // 60x
+                VIEW: ISOMETRIC // FIXED // 1:1 SCALE
             </div>
         </div>
     );

frontend/src/components/facility3d/RoomObject.tsx

@@ -8,7 +8,7 @@ import { RoomSummaryOverlay } from './SummaryOverlay';
 import { cn } from '../../lib/utils';
 
 // Convert pixel coordinates to world units
-const SCALE = 0.1;
+const SCALE = 1.0;
 
 // Mock environment data
 const getMockRoomEnv = (roomName: string) => {

frontend/src/components/facility3d/coordinates.ts

@@ -1,7 +1,7 @@
 import type { Section3D, Position3D } from '../../lib/layoutApi';
 
 // Convert pixel coordinates to world units
-export const SCALE = 0.1;
+export const SCALE = 1.0;
 
 /**
  * Calculate the world coordinates (x, y, z) for a plant position within a section.