evader for preset

apps/editor/components/editor/preset-thumbnail-generator.tsx

@@ -103,7 +103,10 @@ export const PresetThumbnailGenerator = () => {
           body: blob,
           headers: { 'Content-Type': 'image/png' },
         })
-        if (!res.ok) {
+        if (res.ok) {
+          const json = await res.json()
+          emitter.emit('preset:thumbnail-updated', { presetId, thumbnailUrl: json.thumbnail_url })
+        } else {
           console.error('❌ PresetThumbnail: upload failed', await res.text())
         }
       }, 'image/png')

apps/editor/components/ui/panels/presets/presets-popover.tsx

@@ -2,6 +2,7 @@
 
 import { useEffect, useState, useCallback } from 'react'
 import { BookMarked, Check, Globe, GlobeLock, Pencil, Plus, Save, Trash2, Users, X } from 'lucide-react'
+import { emitter } from '@pascal-app/core'
 import { Popover, PopoverContent, PopoverTrigger } from '@/components/ui/primitives/popover'
 import { Tooltip, TooltipContent, TooltipTrigger } from '@/components/ui/primitives/tooltip'
 import { useAuth } from '@/features/community/lib/auth/hooks'
@@ -76,6 +77,16 @@ export function PresetsPopover({ type, onApply, onSave, onOverwrite, children }:
     if (!isAuthenticated && tab === 'mine') setTab('community')
   }, [isAuthenticated, tab])
 
+  useEffect(() => {
+    const handler = ({ presetId, thumbnailUrl }: { presetId: string; thumbnailUrl: string }) => {
+      setPresets((prev) =>
+        prev.map((p) => (p.id === presetId ? { ...p, thumbnail_url: thumbnailUrl } : p)),
+      )
+    }
+    emitter.on('preset:thumbnail-updated', handler)
+    return () => emitter.off('preset:thumbnail-updated', handler)
+  }, [])
+
   const handleSaveNew = async () => {
     if (!saveName.trim()) return
     setSaving(true)

packages/core/src/events/bus.ts

@@ -75,6 +75,7 @@ type ToolEvents = {
 
 type PresetEvents = {
   'preset:generate-thumbnail': { presetId: string; nodeId: string }
+  'preset:thumbnail-updated': { presetId: string; thumbnailUrl: string }
 }
 
 type EditorEvents = GridEvents &