v1.3.0: Refactoring Phase 3+4, Symbol-Verwaltung Redesign, Schlauch-Labels Fix

- Refactoring: Error Boundaries, apiFetch Wrapper, Socket Status-Tracking
- Refactoring: UI Kontrast (theme-aware colors), unused imports bereinigt
- Symbol-Verwaltung: Neues Split-Panel (Meine Symbole + Bibliothek)
- Symbol-Verwaltung: Umbenennen (TLF rot/blau), Duplikate erlaubt
- Symbol-Verwaltung: Karten-Sidebar zeigt eigene Symbole bevorzugt
- Schlauch-Labels: Groessere Schrift (13px/10px), verschiebbar (Drag)
- Schema: TenantSymbol customName, sortOrder, unique constraint entfernt
- Open Source Referenz entfernt (kostenloses Projekt)

src/components/layout/right-sidebar.tsx

@@ -126,9 +126,26 @@ export function RightSidebar({ onSymbolDrop, canEdit, isOpen, onToggle, activeTa
           // Separate tenant-specific icons ("Eigene" category) from global library
           const eigene = allCats.find(c => c.name === 'Eigene')
           const globalCats = allCats.filter(c => c.name !== 'Eigene')
-          setTenantIcons(eigene?.symbols || [])
+
+          // Merge: mySymbols (custom collection) + legacy "Eigene" category uploads
+          const mySymbols: DisplaySymbol[] = (data.mySymbols || []).map((s: any) => ({
+            id: s.id,
+            name: s.name,
+            imageUrl: s.url || `/api/icons/${s.id}/image`,
+          }))
+          const legacyOwn = eigene?.symbols || []
+          // Deduplicate: mySymbols takes priority over legacy
+          const mySymbolIds = new Set(mySymbols.map(s => s.id))
+          const mergedTenant = [...mySymbols, ...legacyOwn.filter(s => !mySymbolIds.has(s.id))]
+
+          setTenantIcons(mergedTenant)
           setCategories(globalCats)
           if (globalCats.length > 0) setActiveCategory(globalCats[0].id)
+
+          // Auto-collapse library if tenant has own symbols
+          if (mergedTenant.length > 0) {
+            setShowLibrarySection(false)
+          }
         }
       } catch (err) {
         console.error('Failed to load icons:', err)