fix(symbol-groups): API + Frontend auf category-Objekt-Format umgestellt – zeigt jetzt alle Kategorien korrekt

src/app/api/icons/route.ts

@@ -115,12 +115,12 @@ export async function GET() {
 
       const groups = new Map<string | null, any[]>()
       for (const sym of flatTenantSymbols) {
-        const key = sym.categoryId || null
+        const key = sym.categoryId || '__none__'
         if (!groups.has(key)) groups.set(key, [])
         groups.get(key)!.push(sym)
       }
 
-      const catIds = Array.from(groups.keys()).filter(Boolean) as string[]
+      const catIds = Array.from(groups.keys()).filter(k => k !== '__none__') as string[]
       let tenantCategories: any[] = []
       if (catIds.length > 0) {
         tenantCategories = await prisma.$queryRawUnsafe(
@@ -132,15 +132,12 @@ export async function GET() {
       const catMap = new Map(tenantCategories.map((c: any) => [c.id, c]))
 
       tenantSymbolGroups = Array.from(groups.entries()).map(([catId, symbols]) => {
-        const cat = catId ? catMap.get(catId) : null
+        const cat = catId !== '__none__' ? catMap.get(catId) : null
         return {
-          categoryId: catId,
-          categoryName: cat ? cat.name || 'Kategorie' : 'Ohne Kategorie',
-          sortOrder: cat ? cat.sortOrder ?? 999 : 999,
+          category: cat ? { id: cat.id, name: cat.name } : null,
           symbols,
         }
       })
-      tenantSymbolGroups.sort((a, b) => a.sortOrder - b.sortOrder)
     }
   } catch (err) {
     console.error('Error fetching tenant symbols:', err)