feat(conduct): add restore revoked record functionality and update history view

backend/routes/admin.py

@@ -231,6 +231,33 @@ async def revoke_conduct_record(request: Request, req: RevokeRequest):
         return error_response(message=result["message"])
 
 
+@router.post("/conduct/restore")
+async def restore_conduct_record(request: Request, req: RevokeRequest):
+    """反撤销（恢复）已撤销的记录"""
+    user = await get_current_user(request)
+    result = await ConductService.restore_record(
+        record_id=req.record_id,
+        restorer_id=user["user_id"]
+    )
+    if result["success"]:
+        record = result.get("record", {})
+        await LogService.write_operation_log(
+            operator_id=user["user_id"], operator_name=user["username"],
+            operator_role="班主任", operation_type="restore_record",
+            target_type="conduct", target_id=req.record_id,
+            details=(
+                f"反撤销记录ID: {req.record_id}, "
+                f"原操作人: {record.get('recorder_name', '未知')}, "
+                f"原分值变动: {'+' if record.get('points_change', 0) > 0 else ''}{record.get('points_change', 0)}分, "
+                f"反撤销操作人: {user['username']}"
+            ),
+            ip=request.client.host
+        )
+        return success_response(message="反撤销成功")
+    else:
+        return error_response(message=result["message"])
+
+
 @router.get("/conduct/history")
 async def get_conduct_history(
     request: Request,