fix: sweep stale export files at launch and carry quick-reply text into the composer

App.tsx

@@ -11,6 +11,7 @@ import { startLiveUpdates, type LiveUpdatesHandle } from './src/api/push-stream'
 import { jmapClient } from './src/api/jmap-client';
 import type { StateChange } from './src/api/types';
 import { dispatchStateChange } from './src/lib/state-change-bus';
+import { sweepStaleExportFiles } from './src/lib/email-export';
 import { useFilterStore } from './src/stores/filter-store';
 import { useVacationStore } from './src/stores/vacation-store';
 import {
@@ -308,6 +309,9 @@ export default function App() {
   const haveLiveSession = useAuthStore((s) => s.session != null);
   React.useEffect(() => {
     void useOfflineCacheStore.getState().hydrate();
+    // Attachments shared out of the app linger in the cache dir; drop the
+    // ones older than a day so a granted content URI can't read them forever.
+    void sweepStaleExportFiles();
   }, []);
   React.useEffect(() => {
     if (!offlineCacheEnabled || !haveLiveSession) return;

src/screens/ComposeScreen.tsx

@@ -540,7 +540,13 @@ export default function ComposeScreen({ route, navigation }: Props) {
           ? `<div>${escapeHtml(prefillBody).replace(/\r?\n/g, '<br>')}</div><p><br></p>`
           : '<p><br></p>';
       }
-      return buildInitialHtml(mode, {
+      // Quick reply "More options" hands the typed text over as prefillBody;
+      // it goes above the quote.
+      const typed = prefillBody
+        ? `<div>${escapeHtml(prefillBody).replace(/␍?
+/g, '<br>')}</div>`
+        : '';
+      return typed + buildInitialHtml(mode, {
         from: { name: replyTo.from.name, email: replyTo.from.email },
         to: replyTo.to,
         cc: replyTo.cc,