feat: rebuild search index

src/renderer/App.tsx

@@ -302,6 +302,13 @@ const App: React.FC = () => {
       }) || (() => {})
     );
 
+    unsubscribers.push(
+      window.electronAPI?.on('menu:reindexText', () => {
+        // Fire and forget - runs as a background task
+        window.electronAPI?.posts.reindexText();
+      }) || (() => {})
+    );
+
     return () => {
       unsubscribers.forEach(unsub => unsub());
     };

src/renderer/types/electron.d.ts

@@ -149,6 +149,7 @@ export interface ElectronAPI {
     discard: (id: string) => Promise<PostData | null>;
     hasPublishedVersion: (id: string) => Promise<boolean>;
     rebuildFromFiles: () => Promise<void>;
+    reindexText: () => Promise<void>;
     search: (query: string) => Promise<SearchResult[]>;
     filter: (filter: PostFilter) => Promise<PostData[]>;
     getTags: () => Promise<string[]>;