feat: bot言出必行 — 提示词强化 + git_pull/read/write 命令

1. chat_bridge.py: 系统提示增加「言出必行」规则
   - 说去做某事必须同时用 run_command 真正执行
   - 只说不做被视为空话

2. session_router.py: 新增命令处理器
   - git_pull 拉代码 / git_push 推代码
   - read_file 读文件 / write_file 写文件
   - run 执行shell命令
   - 命令指南自动注入 LLM prompt

gateway/scripts/chat_bridge.py

@@ -545,8 +545,15 @@ class SessionBridge:
             "你不是 Sisyphus，不是莫荷，不是莫小果。你是 xxm。\n"
             "老莫让你做事就做，不要推脱，不要反复确认。\n"
             "回复简洁，不用 emoji。\n"
-             "用 run_command 工具获取信息。\n"
-             "写文件的正确方式：用 Python 一次性写完所有内容，不要分多次调用。\n"
+            "\n"
+            "=== 言出必行（重要）===\n"
+            "你可以使用 run_command 工具执行 shell 命令。\n"
+            "你说「我去做某事」时，必须在同一条回复中使用 run_command 真正执行，\n"
+            "否则被视为空话。只说不做比不说更糟糕。\n"
+            "不确定该怎么做时，先 run_command 查一下再决定。\n"
+            "\n"
+            "=== 写文件的正确方式 ===\n"
+            "用 Python 一次性写完所有内容，不要分多次调用。\n"
             "错误示例（会覆盖，每调用一次就清空一次）：python -c \"open('file', 'w').write('一行')\"\n"
             "正确做法：把全部内容拼在一个 python -c 调用里写完。\n"
             "\n"

gateway/scripts/session_router.py

@@ -172,6 +172,11 @@ class SessionRouter:
         self._commands = {
             "list_sessions": self._cmd_list_sessions,
             "switch_session": self._cmd_switch_session,
+            "git_pull": self._cmd_git_pull,
+            "git_push": self._cmd_git_push,
+            "read_file": self._cmd_read_file,
+            "write_file": self._cmd_write_file,
+            "run": self._cmd_run,
             "help": self._cmd_help,
         }
 
@@ -180,6 +185,11 @@ class SessionRouter:
             "你可以使用以下命令让 bot 执行操作，把命令放在回复中即可：\n"
             "##list_sessions##   列出所有可用的 session\n"
             "##switch_session:xxx##  切换到标题包含 xxx 的 session\n"
+            "##git_pull:path##      git pull 指定目录，默认 ~/projects/self-growing-knowledge\n"
+            "##git_push:path;msg##  git add/commit/push，message 可选\n"
+            "##read_file:path##     读取文件内容（展示前 2000 行）\n"
+            "##write_file:path|content##  写入/覆盖文件（注意：会覆盖！）\n"
+            "##run:command##        执行任意 shell 命令\n"
             "##help##   查看所有可用命令\n"
         )
 
@@ -322,6 +332,91 @@ class SessionRouter:
         )
         return f"找到 {len(rows)} 个匹配（仅显示前{SESSION_LIST_LIMIT}个），请回复编号选择：\n{items}"
 
+    # ── Git 命令 ──────────────────────────────────────────
+
+    def _cmd_git_pull(self, key: str, args: Optional[str]) -> str:
+        path = args or "~/projects/self-growing-knowledge"
+        try:
+            import subprocess
+            r = subprocess.run(
+                f"cd {path} && git pull origin master 2>&1",
+                shell=True, capture_output=True, text=True, timeout=60,
+            )
+            out = r.stdout.strip() + (f"\n{r.stderr.strip()}" if r.stderr.strip() else "")
+            return out or "(no output)"
+        except subprocess.TimeoutExpired:
+            return "(git pull 超时)"
+        except Exception as e:
+            return f"(错误: {e})"
+
+    def _cmd_git_push(self, key: str, args: Optional[str]) -> str:
+        path = "~/projects/self-growing-knowledge"
+        msg = "auto commit"
+        if args and ";" in args:
+            parts = args.split(";", 1)
+            path = parts[0].strip()
+            msg = parts[1].strip()
+        elif args:
+            path = args
+        try:
+            import subprocess
+            r = subprocess.run(
+                f"cd {path} && git add . && git commit -m '{msg}' && git push origin master 2>&1",
+                shell=True, capture_output=True, text=True, timeout=60,
+            )
+            out = r.stdout.strip() + (f"\n{r.stderr.strip()}" if r.stderr.strip() else "")
+            return out or "(no output)"
+        except subprocess.TimeoutExpired:
+            return "(git push 超时)"
+        except Exception as e:
+            return f"(错误: {e})"
+
+    def _cmd_read_file(self, key: str, args: Optional[str]) -> str:
+        if not args:
+            return "请指定文件路径"
+        try:
+            import os
+            path = os.path.expanduser(args)
+            with open(path, "r", encoding="utf-8", errors="replace") as f:
+                content = f.read(50000)  # 前 50000 字符
+            lines = content.split("\n")
+            shown = "\n".join(lines[:2000])
+            if len(lines) > 2000:
+                shown += f"\n... ({len(lines) - 2000} 行已截断)"
+            return shown or "(空文件)"
+        except FileNotFoundError:
+            return f"(文件不存在: {args})"
+        except Exception as e:
+            return f"(读取失败: {e})"
+
+    def _cmd_write_file(self, key: str, args: Optional[str]) -> str:
+        if not args or "|" not in args:
+            return "用法: ##write_file:路径|内容##"
+        try:
+            import os
+            path_part, content = args.split("|", 1)
+            path = os.path.expanduser(path_part.strip())
+            with open(path, "w", encoding="utf-8") as f:
+                f.write(content)
+            return f"(已写入 {os.path.getsize(path)} 字节到 {path})"
+        except Exception as e:
+            return f"(写入失败: {e})"
+
+    def _cmd_run(self, key: str, args: Optional[str]) -> str:
+        if not args:
+            return "请指定命令"
+        try:
+            import subprocess
+            r = subprocess.run(
+                args, shell=True, capture_output=True, text=True, timeout=60,
+            )
+            out = r.stdout.strip() + (f"\n{r.stderr.strip()}" if r.stderr.strip() else "")
+            return out or f"(exit {r.returncode})"
+        except subprocess.TimeoutExpired:
+            return "(命令超时)"
+        except Exception as e:
+            return f"(错误: {e})"
+
     def _cmd_help(self, key: str, args: Optional[str]) -> str:
         return self._cmd_guide
 
@@ -424,8 +519,10 @@ class SessionRouter:
         #     lines.append("")
 
         lines.append(
-            "[可用命令] 切换session用 ##switch_session:xxx## ，"
-            "列表用 ##list_sessions## ，帮助用 ##help## 。普通聊天无视。"
+            "[可用命令] ##switch_session:xxx## 切换session，##list_sessions## 列表，"
+            "##git_pull:路径## 拉代码，##git_push:路径;消息## 推代码，"
+            "##read_file:路径## 读文件，##write_file:路径|内容## 写文件，"
+            "##run:命令## 执行shell。说「去做」时必须同时用命令执行。"
         )
         lines.append("---")