Phase 4.5+4.6: Modul-Konfiguration pro Workspace + Sidebar useMemo Fix

4.5 Modul-Konfiguration pro Workspace:
- WorkspaceManager: Config-Editor pro Modul (JSON textarea)
- Pro Modul kann JSON config bearbeitet werden (z.B. sichtbare Ordner-IDs)
- Generisch: jedes Modul definiert selbst was in seiner config steht

4.6 Bugfixes:
- Sidebar useMemo: isModuleVisible zu Abhaengigkeiten hinzugefuegt
- Bei Workspacewechsel wird Sidebar jetzt sofort neu berechnet

Tests: 17 Backend + 13 Frontend = 30/30 bestanden

frontend/src/components/layout/Sidebar.tsx

@@ -133,7 +133,7 @@ export function Sidebar() {
       if (a.order !== b.order) return a.order - b.order;
       return a.label.localeCompare(b.label);
     });
-  }, [manifests, menuOrderData, user]);
+  }, [manifests, menuOrderData, user, isModuleVisible]);
 
   const [expandedItems, setExpandedItems] = useState<Set<string>>(new Set());
 

frontend/src/components/settings/WorkspaceManager.tsx

@@ -45,6 +45,7 @@ export function WorkspaceManager() {
 
   const [moduleWsId, setModuleWsId] = useState<string | null>(null);
   const [moduleConfig, setModuleConfig] = useState<WorkspaceModule[]>([]);
+  const [configEditingKey, setConfigEditingKey] = useState<string | null>(null);
 
   const workspaces = wsData?.items || [];
 
@@ -156,14 +157,43 @@ export function WorkspaceManager() {
             {moduleConfig.map(m => {
               const mod = availableModules.find(a => a.key === m.module_key);
               return (
-                <label key={m.module_key} className="flex items-center gap-2 p-2 border border-gray-200 dark:border-gray-700 rounded-md cursor-pointer hover:bg-gray-50 dark:hover:bg-gray-800">
+                <div key={m.module_key} className={`p-2 border rounded-md ${m.is_visible ? 'border-blue-300 dark:border-blue-700 bg-blue-50 dark:bg-blue-900/10' : 'border-gray-200 dark:border-gray-700'}`}>
-                  <input
+                  <label className="flex items-center gap-2 cursor-pointer hover:bg-gray-50 dark:hover:bg-gray-800 rounded p-1">
-                    type="checkbox"
+                    <input
-                    checked={m.is_visible}
+                      type="checkbox"
-                    onChange={() => toggleModule(m.module_key)}
+                      checked={m.is_visible}
-                  />
+                      onChange={() => toggleModule(m.module_key)}
-                  <span className="text-sm">{mod?.label || m.module_key}</span>
+                    />
-                </label>
+                    <span className="text-sm flex-1">{mod?.label || m.module_key}</span>
+                    {m.is_visible && (
+                      <button
+                        onClick={(e) => { e.preventDefault(); setModuleConfig(prev => prev.map(x => x.module_key === m.module_key ? { ...x, config: x.config } : x)); setConfigEditingKey(configEditingKey === m.module_key ? null : m.module_key); }}
+                        className="text-xs px-1.5 py-0.5 border rounded hover:bg-gray-100 dark:hover:bg-gray-700"
+                        title="Konfiguration bearbeiten"
+                      >
+                        ⚙
+                      </button>
+                    )}
+                  </label>
+                  {m.is_visible && configEditingKey === m.module_key && (
+                    <div className="mt-2 space-y-1">
+                      <textarea
+                        className="w-full text-xs font-mono p-1.5 border border-gray-300 dark:border-gray-600 rounded bg-white dark:bg-gray-900 h-20"
+                        placeholder='{"visible_folder_ids": []}'
+                        value={JSON.stringify(m.config || {}, null, 2)}
+                        onChange={(e) => {
+                          try {
+                            const parsed = JSON.parse(e.target.value);
+                            setModuleConfig(prev => prev.map(x => x.module_key === m.module_key ? { ...x, config: parsed } : x));
+                          } catch {
+                            // Invalid JSON — keep raw text for editing
+                          }
+                        }}
+                      />
+                      <p className="text-xs text-gray-400">JSON-Konfiguration für dieses Modul (z.B. sichtbare Ordner-IDs)</p>
+                    </div>
+                  )}
+                </div>
               );
             })}
           </div>