[cleanup] Remove unused viewport culling settings and variables

- Remove ViewportCulling and CullingMargin settings from coreSettings
- Remove isViewportCullingEnabled and cullingMargin from useFeatureFlags
- Clean up unused imports and variables in GraphCanvas.vue
- Culling is no longer configurable as per design decision

src/components/graph/GraphCanvas.vue

@@ -179,12 +179,7 @@ const selectionToolboxEnabled = computed(() =>
 )
 
 // Feature flags
-const {
-  shouldRenderVueNodes,
-  // isViewportCullingEnabled, // Unused
-  // cullingMargin: featureCullingMargin, // Unused
-  isDevModeEnabled
-} = useFeatureFlags()
+const { shouldRenderVueNodes, isDevModeEnabled } = useFeatureFlags()
 
 // TransformPane enabled when Vue nodes are enabled OR debug override
 const debugOverrideVueNodes = ref(true) // Default to true for development
@@ -322,8 +317,6 @@ watch(
 // Transform state for viewport culling
 const { syncWithCanvas } = useTransformState()
 
-// const cullingMargin = 0.2 // 20% margin outside viewport (unused)
-
 // Replace problematic computed property with proper reactive system
 const nodesToRender = computed(() => {
   // Access performanceMetrics to trigger on RAF updates

src/composables/useFeatureFlags.ts

@@ -33,18 +33,6 @@ export const useFeatureFlags = () => {
     }
   })
 
-  /**
-   * Enable viewport culling for performance
-   * When disabled, all Vue nodes render regardless of viewport
-   */
-  const isViewportCullingEnabled = computed(() => {
-    try {
-      return settingStore.get('Comfy.VueNodes.ViewportCulling' as any) ?? true
-    } catch {
-      return true
-    }
-  })
-
   /**
    * Development mode features (debug panel, etc.)
    * Automatically enabled in development builds
@@ -71,23 +59,10 @@ export const useFeatureFlags = () => {
       true
   )
 
-  /**
-   * Get culling margin setting
-   */
-  const cullingMargin = computed(() => {
-    try {
-      return settingStore.get('Comfy.VueNodes.CullingMargin' as any) ?? 0.2
-    } catch {
-      return 0.2
-    }
-  })
-
   return {
     isVueNodesEnabled,
     isVueWidgetsEnabled,
-    isViewportCullingEnabled,
     isDevModeEnabled,
-    shouldRenderVueNodes,
-    cullingMargin
+    shouldRenderVueNodes
   }
 }

src/constants/coreSettings.ts

@@ -887,30 +887,5 @@ export const CORE_SETTINGS: SettingParams[] = [
     tooltip: 'Render widgets as Vue components within Vue nodes.',
     type: 'boolean',
     defaultValue: true
-  },
-  {
-    id: 'Comfy.VueNodes.ViewportCulling' as any,
-    category: ['Comfy', 'Vue Nodes', 'Performance'],
-    experimental: true,
-    name: 'Enable viewport culling',
-    tooltip:
-      'Only render Vue nodes visible in viewport for better performance.',
-    type: 'boolean',
-    defaultValue: true
-  },
-  {
-    id: 'Comfy.VueNodes.CullingMargin' as any,
-    category: ['Comfy', 'Vue Nodes', 'Performance'],
-    experimental: true,
-    name: 'Viewport culling margin',
-    tooltip:
-      'Percentage of viewport to extend culling bounds (0.2 = 20% margin).',
-    type: 'slider',
-    defaultValue: 0.2,
-    attrs: {
-      min: 0,
-      max: 1,
-      step: 0.05
-    }
   }
 ]