rebuild(migration): validate local legacy cutover

next/backend/jobs/repository.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import ast
 import json
 import sqlite3
 from datetime import datetime, timedelta
@@ -147,8 +148,28 @@ def public_job(row: sqlite3.Row) -> dict[str, Any]:
     result = dict(row)
     result["source_set"] = json.loads(str(result.pop("source_set_json")))
     result["payload"] = json.loads(str(result.pop("payload_json")))
+    result["error_message"] = _public_error_message(str(result["error_message"]))
     return result
 
 
+def _public_error_message(value: str) -> str:
+    """Normalize AppError tuples written before structured error storage."""
+    if not value.startswith("("):
+        return value
+    try:
+        legacy = ast.literal_eval(value)
+    except (SyntaxError, ValueError):
+        return value
+    if (
+        isinstance(legacy, tuple)
+        and len(legacy) == 3
+        and isinstance(legacy[0], str)
+        and isinstance(legacy[1], str)
+        and isinstance(legacy[2], int)
+    ):
+        return legacy[1]
+    return value
+
+
 def _json(value: Any) -> str:
     return json.dumps(value, ensure_ascii=False, separators=(",", ":"), sort_keys=True)

next/backend/jobs/service.py

@@ -57,7 +57,7 @@ class JobService:
                     finished_at=finished,
                     duration_ms=_duration(started, finished),
                     error_code=type(exc).__name__,
-                    error_message=str(exc) or "任务执行失败",
+                    error_message=_exception_message(exc),
                 )
             raise
         finished = datetime.now(SHANGHAI)
@@ -120,3 +120,10 @@ class JobService:
 
 def _duration(started: datetime, finished: datetime) -> int:
     return max(0, round((finished - started).total_seconds() * 1000))
+
+
+def _exception_message(error: Exception) -> str:
+    message = getattr(error, "message", None)
+    if isinstance(message, str) and message.strip():
+        return message.strip()
+    return str(error).strip() or "任务执行失败"