gate4: register app.core.jobs in worker for send_password_reset_email

app/core/worker.py

@@ -176,6 +176,7 @@ async def on_shutdown(ctx: dict[str, Any]) -> None:
 def _lazy_register_plugin_jobs() -> None:
     """Import each plugin job module so its register_job() call fires."""
     plugin_job_modules = [
+        "app.core.jobs",
         "app.plugins.builtins.unified_search.jobs",
         "app.plugins.builtins.ai_proactive.jobs",
         "app.plugins.builtins.automation.scheduler",