improve gmail sync: email input, permanent errors, auto-dock

- add isync to setup.sh
- ask for gmail address alongside app password in integrations
- add PermanentError to job queue (skips retries for non-recoverable failures)
- use PermanentError for missing credentials, missing executable, auth failures
- auto-add /email to dock after successful gmail sync
- invalidate dock cache on sync completion for seamless UI update

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/servers/api/integrations/integrations.ts

@@ -110,7 +110,7 @@ integrationsRouter.get('/google/verify', async (ctx) => {
   const body = await res.json();
   const valid = body.error === 'invalid_grant' || body.error === 'redirect_uri_mismatch';
 
-  return ctx.json({ valid, error: valid ? null : body.error_description ?? body.error });
+  return ctx.json({ valid, error: valid ? null : (body.error_description ?? body.error) });
 });
 
 // --- Personal: Google account connection status ---
@@ -132,17 +132,20 @@ integrationsRouter.get('/google/status', async (ctx) => {
 
 integrationsRouter.put('/google/app-password', async (ctx) => {
   const user = ctx.get('user');
-  const body = ctx.get('body') as { appPassword?: string };
+  const body = ctx.get('body') as { appPassword?: string; email?: string };
   if (!body.appPassword) throw BAD_REQUEST('Missing appPassword');
 
   const connection = await getUserIntegration(user.id, 'google');
   const connConfig = (connection?.config as Record<string, unknown>) ?? {};
 
+  const updated: Record<string, unknown> = { ...connConfig, imapAppPassword: body.appPassword };
+  if (body.email) updated.email = body.email;
+
   await upsertUserIntegration({
     userId: user.id,
     provider: 'google',
     serverIntegrationId: connection?.serverIntegrationId ?? undefined,
-    config: { ...connConfig, imapAppPassword: body.appPassword },
+    config: updated,
   });
 
   return ctx.json({ ok: true });