feat(task): 添加任务修订功能和超时处理机制

添加了 `revise_task` 路由动作类型，允许用户修改、纠正或重新执行最新活动任务结果。
实现了工具失败指导原则，防止相同类别工具重复失败。
为任务规划器添加了超时处理机制，避免长时间等待。

BREAKING CHANGE: 任务路由逻辑已更新，新增 `revise_task` 动作类型。

fix(api): 修复任务详情API返回完整流程投影

修复了任务详情API端点，现在会包含过滤后的流程运行、事件和工件信息，
并确保时间戳字段正确序列化。

refactor(engine): 优化任务技能解析器摘要节点处理

改进了任务技能解析器对摘要节点的处理逻辑，对于仅依赖文本生成功能的摘要节
点不再分配具体技能，直接使用依赖项输出进行汇总。

test: 增加任务修订和超时处理测试用例

添加了测试用例验证任务修订输入记录反馈、超时回退到单模式以及
摘要节点技能解析等新功能。

app-instance/backend/beaver/skills/builtin/intent-agent-router/SKILL.md

@@ -13,6 +13,7 @@ Your only job is to classify the current user message into one routing decision:
 
 - `simple_chat`
 - `continue_task`
+- `revise_task`
 - `new_task`
 - `close_task`
 - `abandon_task`
@@ -27,6 +28,23 @@ Choose `new_task` when the user asks for anything that needs the main Task agent
 
 The Intent Agent has no tools. If a request needs a tool, do not apologize and do not say you cannot access it. Route it to Task mode so the main agent can use tools.
 
+When there is an active task, do not force every new user message into that task. Use the active task and recent conversation to decide:
+
+- Choose `revise_task` when the user asks to change, correct, refine, expand, reformat, or redo the latest active task result.
+- Choose `continue_task` for neutral follow-up questions or additional next steps that still belong to the active task.
+- Choose `new_task` when the user asks for clearly unrelated work.
+- Choose `close_task` when the user says the task is satisfactory or finished, such as "可以了", "就这样", or "that's good".
+- Choose `abandon_task` when the user says to stop, cancel, or no longer do the active task.
+
+Examples with an active weather task:
+
+- "再详细一点" -> `revise_task`
+- "加上明后天穿衣建议" -> `revise_task`
+- "顺便查一下深圳" -> `continue_task`
+- "帮我写一个采购合同" -> `new_task`
+- "可以了" -> `close_task`
+- "不用了" -> `abandon_task`
+
 ## Must Create Task
 
 Choose `new_task` when there is no active task and the request asks to: