fix(telegram): route direct sends through gateway

apps/api/src/services/ai_rate_limiter.py

@@ -274,14 +274,13 @@ class AIRateLimiter:
 
         try:
             from src.core.config import settings
+            from src.services.telegram_gateway import get_telegram_gateway
 
             target_chat_id = settings.SRE_GROUP_CHAT_ID or settings.OPENCLAW_TG_CHAT_ID
             if not settings.OPENCLAW_TG_BOT_TOKEN or not target_chat_id:
                 logger.warning("telegram_not_configured_for_cost_alert")
                 return
 
-            import httpx
-
             message = (
                 f"🚨🚨🚨 <b>AI 成本超限警報</b> 🚨🚨🚨\n\n"
                 f"Provider: <code>{provider.upper()}</code>\n"
@@ -292,15 +291,15 @@ class AIRateLimiter:
                 f"<code>redis-cli DEL ai_rate:total_cost:{provider}</code>"
             )
 
-            async with httpx.AsyncClient(timeout=10.0) as client:
-                await client.post(
-                    f"https://api.telegram.org/bot{settings.OPENCLAW_TG_BOT_TOKEN}/sendMessage",
-                    json={
-                        "chat_id": target_chat_id,
-                        "text": message,
-                        "parse_mode": "HTML",
-                    },
-                )
+            gateway = get_telegram_gateway()
+            await gateway._send_request(
+                "sendMessage",
+                {
+                    "chat_id": target_chat_id,
+                    "text": message,
+                    "parse_mode": "HTML",
+                },
+            )
 
             logger.error(
                 "ai_cost_alert_sent",
@@ -327,13 +326,12 @@ class AIRateLimiter:
 
         try:
             from src.core.config import settings
+            from src.services.telegram_gateway import get_telegram_gateway
 
             target_chat_id = settings.SRE_GROUP_CHAT_ID or settings.OPENCLAW_TG_CHAT_ID
             if not settings.OPENCLAW_TG_BOT_TOKEN or not target_chat_id:
                 return
 
-            import httpx
-
             limit = COST_LIMITS[provider]["total_cost_usd"]
             remaining = limit - current_cost
 
@@ -345,15 +343,15 @@ class AIRateLimiter:
                 f"接近上限，請注意監控！"
             )
 
-            async with httpx.AsyncClient(timeout=10.0) as client:
-                await client.post(
-                    f"https://api.telegram.org/bot{settings.OPENCLAW_TG_BOT_TOKEN}/sendMessage",
-                    json={
-                        "chat_id": target_chat_id,
-                        "text": message,
-                        "parse_mode": "HTML",
-                    },
-                )
+            gateway = get_telegram_gateway()
+            await gateway._send_request(
+                "sendMessage",
+                {
+                    "chat_id": target_chat_id,
+                    "text": message,
+                    "parse_mode": "HTML",
+                },
+            )
 
             logger.warning(
                 "ai_cost_warning_sent",

apps/api/src/services/approval_execution.py

@@ -838,9 +838,9 @@ class ApprovalExecutionService:
                     f"{km_info}"
                 )
 
-            await gateway._http_client.post(
-                f"https://api.telegram.org/bot{settings.OPENCLAW_TG_BOT_TOKEN}/sendMessage",
-                json={
+            await gateway._send_request(
+                "sendMessage",
+                {
                     "chat_id": target_chat_id,
                     "text": text,
                     "parse_mode": "HTML",

apps/api/src/services/post_execution_verifier.py

@@ -350,9 +350,9 @@ async def _send_rollback_proposal_alert(
         )
 
         target_chat_id = _settings.SRE_GROUP_CHAT_ID or _settings.OPENCLAW_TG_CHAT_ID
-        await gateway._http_client.post(
-            f"https://api.telegram.org/bot{_settings.OPENCLAW_TG_BOT_TOKEN}/sendMessage",
-            json={
+        await gateway._send_request(
+            "sendMessage",
+            {
                 "chat_id": target_chat_id,
                 "text": text,
                 "parse_mode": "HTML",