diff --git a/apps/api/src/services/telegram_gateway.py b/apps/api/src/services/telegram_gateway.py
index 17e3fcd2..bcb6ba98 100644
--- a/apps/api/src/services/telegram_gateway.py
+++ b/apps/api/src/services/telegram_gateway.py
@@ -4961,6 +4961,41 @@ class TelegramGateway:
             payload["reply_markup"] = reply_markup
         return await self._send_request("sendMessage", payload)
 
+    # =========================================================================
+    # 2026-05-04 Claude Sonnet 4.6: send_text 公開 wrapper（修復 drift_adopt_telegram_failed）
+    # =========================================================================
+
+    async def send_text(
+        self,
+        text: str,
+        chat_id: int | str | None = None,
+        parse_mode: str = "HTML",
+        disable_web_page_preview: bool = True,
+    ) -> dict:
+        """
+        公開 send_text wrapper — 委派至 _send_request('sendMessage', ...)
+
+        給 drift_adopt_service / drift_remediator / runbook_generator /
+        signoz_webhook 等服務使用的通用純文字送出方法。
+        預設送往 alert_chat_id（SRE 群組）。
+
+        Args:
+            text: 訊息內容（最多 4096 字元）
+            chat_id: 目標 chat ID，None 時使用 alert_chat_id
+            parse_mode: 解析模式（預設 HTML）
+            disable_web_page_preview: 是否關閉網頁預覽
+
+        Returns:
+            dict: Telegram API 回應
+        """
+        payload: dict = {
+            "chat_id": chat_id or self.alert_chat_id,
+            "text": text[:4096],
+            "parse_mode": parse_mode,
+            "disable_web_page_preview": disable_web_page_preview,
+        }
+        return await self._send_request("sendMessage", payload)
+
     # =========================================================================
     # 2026-04-24 Claude Sonnet 4.6 (ADR-095 WS4): Hermes NL 回覆
     # =========================================================================