feat: 添加飞书机器人集成 (#13)

* feat: add Feishu bot integration

- Add fsapp.py: Feishu bot webhook handler (root directory)
- Add assets/SETUP_FEISHU.md: Setup guide for Feishu integration
- Add assets/install_python_windows.bat: Windows Python installer script

* fix: 历史注入仅在飞书场景生效，避免混入本地CLI历史

* fix: fsapp调用put_task时传source='feishu'以触发历史注入

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Co-authored-by: 张洲嘉 <zhangzhoujia@zhangzhoujiadeMacBook-Air.local>

agentmain.py

@@ -102,7 +102,12 @@ class GeneraticAgent:
                     handler.key_info += '\n[SYSTEM] 若开始新任务，先更新或清除工作记忆\n'
             self.handler = handler
             self.llmclient.backend = self.llmclient.backends[self.llm_no]
-            gen = agent_runner_loop(self.llmclient, sys_prompt, raw_query, 
+            # 如果有历史记录且来自飞书，注入到首轮 user_input 中（支持/restore恢复上下文）
+            user_input = raw_query
+            if source == 'feishu' and len(self.history) > 1:  # 飞书场景且有之前的对话记录
+                h_str = "\n".join(self.history[-20:])
+                user_input = f"### [WORKING MEMORY]\n<history>\n{h_str}\n</history>\n\n### 用户当前消息\n{raw_query}"
+            gen = agent_runner_loop(self.llmclient, sys_prompt, user_input, 
                                 handler, TOOLS_SCHEMA, max_turns=40, verbose=self.verbose)
             try:
                 full_resp = ""; last_pos = 0