feat(engine): 添加MCP连接管理和工具集成功能

- 集成MCP连接管理器，支持MCP服务器连接
- 添加多种内置工具：ClarifyTool、CronTool、DelegateTool、ExecuteCodeTool、
  PatchFileTool、ProcessTool、SendMessageTool、SpawnTool、TerminalTool、
  TodoTool、WebFetchTool、WebSearchTool、WriteFileTool等
- 实现工具注册和装配功能
- 添加技能选择上下文参数
- 支持思考模式控制参数thinking_enabled

feat(coordinator): 重构任务执行计划器参数命名

- 将learning_candidate_enabled重命名为allow_candidate_generation
- 更新TeamGraphScheduler中的参数传递
- 修改LocalAgentRunner中的相关参数处理
- 更新README文档中的相应描述

refactor(context): 标准化工具调用参数格式

- 添加_json导入用于参数序列化
- 实现_provider_tool_calls方法标准化OpenAI兼容的工具调用载荷
- 修复工具调用中参数非字符串类型的序列化问题

refactor(session): 优化消息历史记录过滤逻辑

- 修改get_messages_as_conversation为基于运行状态过滤消息
- 排除未完成、失败或错误结束的运行记录
- 改进对话历史的可见性控制机制

fix(store): 修复FTS索引重建逻辑

- 添加异常处理防止FTS索引创建失败
- 实现_rebuild_fts_index方法重新构建全文搜索索引
- 优化索引触发器和表的维护流程

app-instance/backend/tests/unit/test_gateway_channels.py

@@ -17,6 +17,9 @@ class FakeResult:
     provider_name: str | None = "fake"
     model: str | None = "fake-model"
     usage: dict[str, Any] = field(default_factory=dict)
+    task_id: str | None = "task-1"
+    task_status: str | None = "awaiting_feedback"
+    validation_result: dict[str, Any] | None = field(default_factory=lambda: {"accepted": True})
 
 
 class FakeService:
@@ -75,6 +78,9 @@ def test_gateway_routes_memory_channel_roundtrip() -> None:
         assert message.content == "echo:hello"
         assert message.session_id == "s1"
         assert message.finish_reason == "stop"
+        assert message.metadata["task_id"] == "task-1"
+        assert message.metadata["task_status"] == "awaiting_feedback"
+        assert message.metadata["validation_result"] == {"accepted": True}
 
         stop_event.set()
         await asyncio.wait_for(task, timeout=2)
@@ -183,6 +189,50 @@ def test_agent_service_maps_stopped_runtime_to_stopped_outbound() -> None:
     asyncio.run(run())
 
 
+def test_channel_manager_keeps_unknown_channel_outbound_undeliverable() -> None:
+    async def run() -> None:
+        bus = MessageBus()
+        manager = ChannelManager(bus)
+        stop_event = asyncio.Event()
+        await bus.publish_outbound(
+            AgentService.build_outbound_message(
+                InboundMessage(channel="missing", content="hello", session_id="missing:1"),
+                FakeResult(session_id="missing:1", output_text="ok"),
+            )
+        )
+        stop_event.set()
+
+        await manager.dispatch_outbound(stop_event)
+
+        assert len(manager.undeliverable) == 1
+        assert manager.undeliverable[0].channel == "missing"
+        assert manager.undeliverable[0].session_id == "missing:1"
+
+    asyncio.run(run())
+
+
+def test_memory_channel_adapts_old_style_payload_to_stable_session_id() -> None:
+    async def run() -> None:
+        bus = MessageBus()
+        channel = MemoryChannelAdapter(bus, name="telegram")
+        inbound = await channel.publish_external_text(
+            "hello",
+            chat_id="chat-1",
+            message_id="message-1",
+            raw_payload={"platform": "telegram", "text": "hello"},
+        )
+
+        queued = await bus.consume_inbound()
+        assert queued is inbound
+        assert queued.channel == "telegram"
+        assert queued.session_id == "telegram:chat-1"
+        assert queued.metadata["chat_id"] == "chat-1"
+        assert queued.metadata["message_id"] == "message-1"
+        assert queued.metadata["raw_channel_payload"] == {"platform": "telegram", "text": "hello"}
+
+    asyncio.run(run())
+
+
 def test_channel_manager_start_cancellation_rolls_back_started_channels() -> None:
     class StartedChannel:
         name = "started"