fix: start plugins after signing in, not only after the next reload

lib/__tests__/plugin-store.test.ts

@@ -238,6 +238,21 @@ describe('usePluginStore', () => {
       expect(usePluginStore.getState().plugins[0].bundleHash).toBe('hash-v1');
     });
 
+    it('starts the plugins after a sign-in when the first call ran signed out', async () => {
+      const { loadPlugin } = await import('@/lib/plugin-loader');
+      // The mail view mounts before the user has signed in.
+      mocks.apiFetch.mockResolvedValueOnce({ ok: false, status: 401, json: async () => ({ error: 'Not authenticated' }) });
+
+      await usePluginStore.getState().initializePlugins();
+      expect(usePluginStore.getState().initialized).toBe(false);
+      expect(loadPlugin).not.toHaveBeenCalled();
+
+      // plugin-app-events calls again once the user is signed in.
+      await usePluginStore.getState().initializePlugins();
+      expect(loadPlugin).toHaveBeenCalledWith(expect.objectContaining({ id: 'managed-plugin' }));
+      expect(usePluginStore.getState().initialized).toBe(true);
+    });
+
     it('keeps the record when the download fails so the error can surface at load time', async () => {
       usePluginStore.setState({ plugins: [syncedRecord()] });
       mocks.downloadManagedBundle.mockRejectedValue(new Error('Could not download the bundle (HTTP 503)'));

stores/plugin-store.ts

@@ -301,8 +301,12 @@ export const usePluginStore = create<PluginStoreState>()(
             });
           }
 
-          // Sync server-managed plugins before loading
-          await syncServerPlugins(get, set);
+          // Sync server-managed plugins before loading. The mail view starts
+          // this on mount, before the user has signed in; marking the store
+          // initialized then left every plugin off after the sign-in until
+          // the next page load. Stay uninitialized so the call that follows
+          // the sign-in (plugin-app-events) starts them.
+          if (await syncServerPlugins(get, set) === 'signed-out') return;
 
           // Load all enabled plugins in parallel. Sequential `await` made one
           // hung/slow plugin block every subsequent one; loadSandboxedPlugin
@@ -502,9 +506,10 @@ function markServerManagedPlugins(plugins: InstalledPlugin[]): InstalledPlugin[]
 async function syncServerPlugins(
   get: () => PluginStoreState,
   set: (partial: Partial<PluginStoreState> | ((state: PluginStoreState) => Partial<PluginStoreState>)) => void,
-): Promise<void> {
+): Promise<'signed-out' | void> {
   try {
     const res = await apiFetch('/api/plugins');
+    if (res.status === 401) return 'signed-out';
     if (!res.ok) return;
 
     const data: { plugins: ServerPluginInfo[] } = await res.json();