fix(telegram): 修復簽核按鈕無作用 - 方法名稱錯誤

根本原因:
- telegram_gateway.py 呼叫 service.add_signature() 但該方法不存在
- telegram.py 呼叫 service.reject() 但該方法不存在
- 正確方法為 sign_approval() 和 reject_approval()

修復:
- _execute_approval_action: add_signature → sign_approval
- _execute_approval_action: reject → reject_approval
- telegram webhook: 同步修復

影響範圍:
- Telegram 簽核/拒絕/稍後/靜默按鈕現在正常運作
- 前端 Y/n 按鈕本就使用正確 API (不受影響)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/api/src/api/v1/telegram.py

@@ -26,7 +26,6 @@ from pydantic import BaseModel
 
 from src.core.config import settings
 from src.core.logging import get_logger
-from src.models.approval import Signature, SignatureSource
 from src.services.approval_db import get_approval_service
 from src.services.security_interceptor import (
     NonceReplayError,
@@ -135,20 +134,14 @@ async def telegram_webhook(
 
         service = get_approval_service()
 
+        # 2026-03-29 ogt: 修復方法呼叫 - add_signature/reject 不存在
+        # 正確方法: sign_approval / reject_approval
         if action == "approve":
-            # 建立 Telegram 簽核記錄
-            signature = Signature(
+            approval, msg, execution_triggered = await service.sign_approval(
+                approval_id=UUID(approval_id),
                 signer_id=f"tg_{user_id}",
                 signer_name=user.get("username") or user.get("first_name") or str(user_id),
                 comment="Telegram 簽核",
-                source=SignatureSource.TELEGRAM,
-                telegram_user_id=user_id,
-                telegram_message_id=message_id,
-            )
-
-            approval = await service.add_signature(
-                UUID(approval_id),
-                signature,
             )
 
             if approval:
@@ -157,6 +150,7 @@ async def telegram_webhook(
                     approval_id=approval_id,
                     user_id=user_id,
                     status=approval.status.value,
+                    execution_triggered=execution_triggered,
                 )
 
                 return {
@@ -164,11 +158,12 @@ async def telegram_webhook(
                     "message": "Approved",
                     "approval_id": approval_id,
                     "status": approval.status.value,
+                    "execution_triggered": execution_triggered,
                 }
 
         elif action == "reject":
-            approval = await service.reject(
-                UUID(approval_id),
+            approval, msg = await service.reject_approval(
+                approval_id=UUID(approval_id),
                 rejector_id=f"tg_{user_id}",
                 rejector_name=user.get("username") or str(user_id),
                 reason="Telegram 拒絕",

apps/api/src/services/telegram_gateway.py

@@ -1244,44 +1244,45 @@ class TelegramGateway:
             username: 使用者名稱
             message_id: 訊息 ID
         """
+        # 2026-03-29 ogt: 修復方法呼叫 - add_signature/reject 不存在
+        # 正確方法: sign_approval / reject_approval
         from uuid import UUID
 
-        from src.models.approval import Signature, SignatureSource
         from src.services.approval_db import get_approval_service
 
         try:
             service = get_approval_service()
 
             if action == "approve":
-                signature = Signature(
+                # 2026-03-29 ogt: 正確呼叫 sign_approval (返回 tuple)
+                approval, message, execution_triggered = await service.sign_approval(
+                    approval_id=UUID(approval_id),
                     signer_id=f"tg_{user_id}",
                     signer_name=username,
                     comment="Telegram 簽核 (Long Polling)",
-                    source=SignatureSource.TELEGRAM,
-                    telegram_user_id=user_id,
-                    telegram_message_id=message_id,
                 )
 
-                approval = await service.add_signature(UUID(approval_id), signature)
-
                 if approval:
                     logger.info(
                         "telegram_approval_signed_via_polling",
                         approval_id=approval_id,
                         user_id=user_id,
                         status=approval.status.value,
+                        execution_triggered=execution_triggered,
                     )
                     print(f"\n{'='*60}")
                     print("✅ 統帥已授權執行！")
                     print(f"簽核單: {approval_id}")
                     print(f"簽核者: @{username} (ID: {user_id})")
                     print(f"狀態: {approval.status.value}")
+                    print(f"執行觸發: {execution_triggered}")
                     print(f"時間: {datetime.now(UTC).isoformat()}")
                     print(f"{'='*60}\n")
 
             elif action == "reject":
-                approval = await service.reject(
-                    UUID(approval_id),
+                # 2026-03-29 ogt: 正確呼叫 reject_approval (返回 tuple)
+                approval, message = await service.reject_approval(
+                    approval_id=UUID(approval_id),
                     rejector_id=f"tg_{user_id}",
                     rejector_name=username,
                     reason="Telegram 拒絕 (Long Polling)",