fix: keep archived messages in the Archive and in search results after a plugin's batch, and update folder counts

stores/__tests__/email-store-batch-target.test.ts

@@ -32,7 +32,10 @@ describe('batch functions with an explicit target', () => {
       // The selection names another message: a targeted call must leave it alone.
       selectedEmailKeys: new Set(['keep']),
       isUnifiedView: true,
+      selectedMailbox: 'inbox',
+      searchQuery: '',
       fetchTagCounts: vi.fn(),
+      fetchMailboxes: vi.fn(async () => {}),
     } as never);
   });
 
@@ -48,6 +51,19 @@ describe('batch functions with an explicit target', () => {
     expect([...useEmailStore.getState().selectedEmailKeys]).toEqual(['keep']);
   });
 
+  it('keeps the rows where they are still listed, and refreshes the folder counts', async () => {
+    const target = { emailIds: ['m1'], client, emails: [email('m1')] };
+    // The Archive is the open folder: the archived message belongs there.
+    useEmailStore.setState({ selectedMailbox: 'arch' } as never);
+    await useEmailStore.getState().batchArchive(other, target);
+    expect(useEmailStore.getState().emails.map((e) => e.id)).toEqual(['m1', 'keep']);
+    // A search still finds it.
+    useEmailStore.setState({ selectedMailbox: 'inbox', searchQuery: 'invoice' } as never);
+    await useEmailStore.getState().batchArchive(other, target);
+    expect(useEmailStore.getState().emails.map((e) => e.id)).toEqual(['m1', 'keep']);
+    expect(useEmailStore.getState().fetchMailboxes).toHaveBeenCalledTimes(2);
+  });
+
   it('refuses an Archive someone else reads, asking the server for its share map', async () => {
     Object.assign(client, {
       supportsMailboxSharing: () => true,

stores/email-store.ts

@@ -1415,11 +1415,28 @@ async function archiveTarget(client: IJMAPClient, target: BatchActionTarget): Pr
   );
   emitEmailMove(move, hookMailboxes);
   const moved = new Set(move.emailIds);
-  useEmailStore.setState(state => ({
-    emails: state.emails.filter(e => !moved.has(e.id)),
-    selectedEmailKeys: dropFromSelection(state, e => moved.has(e.id)),
-  }));
+  // The rows leave the open list only where they no longer belong: not the
+  // Archive itself (or a year or month folder in it), not a search, which
+  // still finds them. Elsewhere the refresh below settles the rest.
+  const state = useEmailStore.getState();
+  const archiveTree = new Set([archive.id]);
+  for (let grew = true; grew;) {
+    grew = false;
+    for (const m of [...state.mailboxes, ...mailboxes]) {
+      if (m.parentId && archiveTree.has(m.parentId) && !archiveTree.has(m.id)) { archiveTree.add(m.id); grew = true; }
+    }
+  }
+  const searching = !!state.searchQuery || !isFilterEmpty(state.searchFilters);
+  const stillListed = searching || (!!state.selectedMailbox && archiveTree.has(state.selectedMailbox));
+  if (!stillListed) {
+    useEmailStore.setState(current => ({
+      emails: current.emails.filter(e => !moved.has(e.id)),
+      selectedEmailKeys: dropFromSelection(current, e => moved.has(e.id)),
+    }));
+  }
   if (!useEmailStore.getState().isUnifiedView) await useEmailStore.getState().refreshCurrentMailbox(client);
+  // The folders' message and unread counts changed.
+  await useEmailStore.getState().fetchMailboxes(client);
   return true;
 }