fix(telegram+review): 修復 PPT 按鈕無反應 + Code Review 頁面空白

PPT 按鈕：
- telegram_bot_service.py 新增 cmd:* handler，透過 Thread 轉發到
  OpenClaw Flask 內部 API（/bot/internal/cmd）
- openclaw_bot_routes.py 新增 /bot/internal/cmd 端點，背景執行 handle_cmd()

Code Review 頁面：
- get_history() 補回 findings / openclaw_report 欄位
- code_review.html history 項目可點擊，自動載入詳細內容
- poll() 無 active pipeline 時自動顯示最新歷史記錄

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

services/code_review_pipeline_service.py

@@ -611,6 +611,8 @@ def get_history(limit: int = 20) -> List[Dict]:
                 "severity_summary": sev,
                 "total_issues":     sum(sev.values()),
                 "auto_fix":         meta.get("auto_fix_triggered", False),
+                "findings":         content.get("findings", []),
+                "openclaw_report":  content.get("openclaw_report", ""),
                 "ea_decision":      content.get("ea_decision", {}),
                 "created_at":       r[4].isoformat() if r[4] else "",
                 "status":           r[5] or "active",

services/telegram_bot_service.py

@@ -488,6 +488,34 @@ class TrendTelegramBot:
         elif data.startswith("momo:ops:"):
             await self._handle_ops_callback(query, data)
 
+        # ===== OpenClaw 指令按鈕（cmd:<cmd>:<arg>）=====
+        elif data.startswith("cmd:"):
+            parts = data[4:].split(":", 1)
+            cmd = parts[0]
+            arg = parts[1] if len(parts) > 1 else ""
+            chat_id = query.message.chat_id
+            import threading as _t
+            _t.Thread(
+                target=self._forward_cmd_to_openclaw,
+                args=(cmd, arg, chat_id),
+                daemon=True,
+            ).start()
+
+    def _forward_cmd_to_openclaw(self, cmd: str, arg: str, chat_id: int):
+        """轉發 cmd:* 指令到 OpenClaw Flask 內部 API"""
+        import requests as _req
+        try:
+            internal_url = os.getenv("OPENCLAW_INTERNAL_URL", "http://momo-pro-system:80")
+            token = os.getenv("INTERNAL_WEBHOOK_TOKEN", "")
+            _req.post(
+                f"{internal_url}/bot/internal/cmd",
+                json={"chat_id": chat_id, "cmd": cmd, "arg": arg},
+                headers={"X-Internal-Token": token},
+                timeout=10,
+            )
+        except Exception as e:
+            logger.warning(f"[TelegramBot] forward cmd failed: {e}")
+
     async def _handle_main_menu_callback(self, query, data: str):
         """處理主選單回調 - 完整功能菜單系統"""
         key = data[5:]  # 移除 'menu:' 前綴