fix(api): 收斂 direct Telegram sendMessage 告警

apps/api/src/services/telegram_gateway.py

@@ -393,6 +393,28 @@ def normalize_alert_notification_payload(text: str, parse_mode: str) -> tuple[st
     return text, parse_mode
 
 
+def normalize_telegram_send_message_payload(method: str, payload: dict) -> dict:
+    """所有 sendMessage 出口都必須套用告警脫敏與事件卡格式。"""
+    if method != "sendMessage":
+        return payload
+
+    text = payload.get("text")
+    if not isinstance(text, str):
+        return payload
+
+    safe_text, effective_parse_mode = normalize_alert_notification_payload(
+        text,
+        str(payload.get("parse_mode") or "HTML"),
+    )
+    if safe_text == text and effective_parse_mode == payload.get("parse_mode"):
+        return payload
+
+    normalized_payload = dict(payload)
+    normalized_payload["text"] = safe_text[:4096]
+    normalized_payload["parse_mode"] = effective_parse_mode
+    return normalized_payload
+
+
 def _top_gateway_bucket(
     buckets: list[dict[str, object]],
     field: str,
@@ -4039,6 +4061,7 @@ class TelegramGateway:
         if not self._http_client:
             raise TelegramGatewayError("HTTP client not initialized")
 
+        payload = normalize_telegram_send_message_payload(method, payload)
         source_envelope_extra = payload.pop(_AWOOOP_SOURCE_ENVELOPE_EXTRA_KEY, None)
         await self._attach_incident_thread_reply(method, payload)