feat(workspace): sidebar search opens the global search

The sidebar filter only matched titles and tags, never the bullets. It
is replaced by a search-field-like button that opens the command palette
(full-text search over all notes and bullets).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

frontend/src/App.tsx

@@ -1086,6 +1086,7 @@ export const App: React.FC = () => {
                 initialBlockId={selectedBlockId}
                 onStatsChange={refreshAll}
                 onOpenTask={handleOpenTask}
+                onOpenSearch={() => setShowCommandPalette(true)}
               />
             )}
 

frontend/src/features/workspace/WorkspaceView.tsx

@@ -64,6 +64,8 @@ interface WorkspaceViewProps {
   initialBlockId?: string | null;
   onStatsChange: () => void;
   onOpenTask?: (taskId: string) => void;
+  // Opens the global search (command palette); the notes sidebar has no search of its own
+  onOpenSearch?: () => void;
 }
 
 type WorkspaceSubView = 'editor' | 'tag_detail' | 'todos' | 'tags' | 'trash';
@@ -282,6 +284,7 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
   initialBlockId,
   onStatsChange,
   onOpenTask,
+  onOpenSearch,
 }) => {
   const [docs, setDocs] = useState<Document[]>([]);
   const [folders, setFolders] = useState<string[]>([]);
@@ -325,7 +328,6 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
   const [tagSearchQuery, setTagSearchQuery] = useState<string>('');
   const [tagSortBy, setTagSortBy] = useState<'count' | 'name'>('count');
 
-  const [searchQuery, setSearchQuery] = useState<string>('');
   const [expandedFolders, setExpandedFolders] = useState<Record<string, boolean>>(() => {
     try {
       const saved = localStorage.getItem('mindsift:workspace_expanded_folders');
@@ -868,17 +870,6 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
     return Array.from(set).sort();
   }, [docs, folders, sharedFolders]);
 
-  const filteredDocs = useMemo(() => {
-    const q = searchQuery.trim().toLowerCase();
-    if (!q) return docs;
-    return docs.filter(
-      (d) =>
-        d.title.toLowerCase().includes(q) ||
-        (d.content && d.content.toLowerCase().includes(q)) ||
-        (d.tags && d.tags.some((t) => t.toLowerCase().includes(q)))
-    );
-  }, [docs, searchQuery]);
-
   const folderTree = useMemo(() => {
     const rootNodes: FolderTreeNode[] = [];
     const nodeMap = new Map<string, FolderTreeNode>();
@@ -906,7 +897,7 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
       const sharedFolderObj = sharedFolders.find(
         (sf) => sf.mountPath === p || sf.name === p
       );
-      const folderDocs = filteredDocs.filter((d) => d.folderPath === p);
+      const folderDocs = docs.filter((d) => d.folderPath === p);
 
       const node: FolderTreeNode = {
         name: leafName,
@@ -931,16 +922,16 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
     }
 
     return rootNodes;
-  }, [allFolderPaths, filteredDocs, sharedFolders]);
+  }, [allFolderPaths, docs, sharedFolders]);
 
   const pinnedDocs = useMemo(
-    () => filteredDocs.filter((d) => d.isPinned),
-    [filteredDocs]
+    () => docs.filter((d) => d.isPinned),
+    [docs]
   );
 
   const rootDocs = useMemo(
-    () => filteredDocs.filter((d) => !d.folderPath),
-    [filteredDocs]
+    () => docs.filter((d) => !d.folderPath),
+    [docs]
   );
 
   // Global To-Dos rollup collections
@@ -1357,32 +1348,25 @@ export const WorkspaceView: React.FC<WorkspaceViewProps> = ({
               </div>
             </div>
 
-            {/* Search Input */}
-            <div className="relative">
-              <Search className="w-3.5 h-3.5 text-faint absolute left-2.5 top-1/2 -translate-y-1/2" />
-              <input
-                type="text"
-                value={searchQuery}
-                onChange={(e) => setSearchQuery(e.target.value)}
-                placeholder="Notizen oder #Tags suchen…"
-                className="input-field w-full pl-8 pr-6 py-1 text-xs"
-              />
-              {searchQuery && (
+            {/* Opens the global full-text search, which also finds the content of every bullet */}
+            {onOpenSearch && (
               <button
                 type="button"
-                  onClick={() => setSearchQuery('')}
-                  className="absolute right-2 top-1/2 -translate-y-1/2 text-faint hover:text-main"
+                onClick={onOpenSearch}
+                className="input-field w-full h-11 sm:h-7 px-2.5 flex items-center gap-2 text-xs text-faint hover:text-main cursor-pointer"
+                title="Globale Suche (Strg+K / ⌘K oder /)"
               >
-                  <X className="w-3.5 h-3.5" />
+                <Search className="w-3.5 h-3.5 shrink-0" />
+                <span className="flex-1 text-left truncate">Notizen durchsuchen…</span>
+                <span className="hidden sm:inline font-mono text-[10px]">⌘K</span>
               </button>
             )}
           </div>
-          </div>
 
         {/* Scrollable Navigation Tree */}
         <div className="flex-1 overflow-y-auto p-2 space-y-3">
           {/* Pinned Notes */}
-          {pinnedDocs.length > 0 && !searchQuery && (
+          {pinnedDocs.length > 0 && (
             <div>
               <div className="px-2 mb-1 flex items-center gap-1 text-[10px] font-bold uppercase tracking-wider text-faint">
                 <Pin className="w-3 h-3 text-status-warn" />