Merge remote-tracking branch 'origin/v3' into v3

# Conflicts:
#	app/api/endpoints/agent.py
#	app/api/endpoints/anthropic.py
#	app/api/endpoints/openai.py
#	app/chain/__init__.py
#	app/chain/message.py
#	app/chain/site.py
#	app/chain/subscribe.py
#	app/chain/transfer.py
#	app/modules/discord/__init__.py
#	app/modules/qqbot/__init__.py
#	app/modules/slack/__init__.py
#	app/modules/telegram/__init__.py
#	app/modules/wechat/__init__.py
#	app/runtime/extensions/module_manager.py
#	app/runtime/extensions/service_registry.py
#	tests/test_agent_interaction.py
#	tests/test_slash_command_interactions.py
#	tests/test_web_agent_stream.py

app/scheduler.py

@@ -51,7 +51,8 @@ from app.runtime.scheduling import TimerUtils
 
 lock = threading.Lock()
 SCHEDULER_PROGRESS_PREFIX = "scheduler"
-AGENT_TASK_JOB_PREFIX = "agent-task"
+# Agent 自主定时任务前缀下沉到 application 门面，此处保留兼容导出。
+from app.application.scheduling import AGENT_TASK_JOB_PREFIX  # noqa: E402
 
 
 class SchedulerChain(ChainBase):
@@ -1220,10 +1221,14 @@ class Scheduler(ConfigReloadMixin, metaclass=SingletonClass):
         :param trigger_source: 触发入口，scheduled-自动调度，manual-显式立即执行
         :return: 执行是否成功及结果摘要
         """
-        from app.agent.orchestrator import agent_manager
+        from app.agent.runtime_loader import get_running_agent_manager
 
         try:
-            return await agent_manager.execute_scheduled_task(
+            manager = get_running_agent_manager()
+            if manager is None:
+                logger.warning("智能助手服务未运行，跳过 Agent 定时任务")
+                return False, "智能助手服务未运行"
+            return await manager.execute_scheduled_task(
                 task_id,
                 trigger_source=trigger_source,
             )
@@ -1536,9 +1541,13 @@ class Scheduler(ConfigReloadMixin, metaclass=SingletonClass):
         """
         智能体心跳唤醒：检查并执行待处理的定时任务
         """
-        from app.agent.orchestrator import agent_manager
+        from app.agent.runtime_loader import get_running_agent_manager
 
-        await agent_manager.heartbeat_check_jobs()
+        manager = get_running_agent_manager()
+        if manager is None:
+            logger.debug("智能助手服务未运行，跳过心跳任务")
+            return
+        await manager.heartbeat_check_jobs()
 
     def user_auth(self):
         """