fix: quick-access button title matching for plugin rooms (Assistent, Live KI, System)

frontend/src/components/layout/MessageSidebar.tsx

@@ -461,16 +461,22 @@ export function MessageSidebar() {
   const handleQuickAccess = (qa: QuickAccessDef) => {
     setCurrentView(qa.view);
     if (qa.view === 'conversations' && qa.filterPinned) {
-      // Find pinned conversation matching the filter
+      // Find pinned conversation matching the filter by title
       const filter = qa.filterPinned;
+      const titleMap: Record<string, string[]> = {
+        assistant: ['Assistent', 'assistent', 'assistant'],
+        liveai: ['Live KI', 'live ki', 'liveai', 'proactive'],
+        system: ['System', 'system'],
+      };
+      const matchTitles = titleMap[filter] || [filter];
       const match = pinnedConversations.find((c) =>
-        c.metadata?.room_type === filter ||
-        (filter && c.title?.toLowerCase().includes(filter)),
+        matchTitles.some((t) => c.title?.toLowerCase() === t.toLowerCase()),
       );
       if (match) {
         handleSelectConversation(match.id);
         return;
       }
+      // Fallback: if no pinned match, just show conversations list
     }
     if (qa.view === 'conversations' && !qa.filterPinned) {
       // 'all' — just show the list, select first if none active