fix(mcp): accept legacy tool result data alias

apps/api/src/plugins/mcp/interfaces.py

@@ -14,6 +14,7 @@ from abc import ABC, abstractmethod
 from dataclasses import dataclass, field
 from datetime import datetime
 from typing import Any
+from uuid import uuid4
 
 from src.utils.timezone import now_taipei
 
@@ -41,12 +42,21 @@ class MCPToolResult:
     """
 
     success: bool
-    execution_id: str
+    execution_id: str = ""
     output: Any | None = None
+    # 2026-05-06 Codex: 舊 provider 曾使用 data=... 作為成功輸出欄位。
+    # 保留 alias，避免 provider 成功路徑因 dataclass 參數不相容而 crash。
+    data: Any | None = None
     error: str | None = None
     duration: float = 0.0
     timestamp: datetime = field(default_factory=now_taipei)
 
+    def __post_init__(self) -> None:
+        if not self.execution_id:
+            self.execution_id = f"mcp-{uuid4()}"
+        if self.output is None and self.data is not None:
+            self.output = self.data
+
     def to_dict(self) -> dict:
         return {
             "success": self.success,