diff --git a/app/application/classification/analysis.py b/app/application/classification/analysis.py
index 71276f11c..f9335c3c3 100644
--- a/app/application/classification/analysis.py
+++ b/app/application/classification/analysis.py
@@ -199,7 +199,8 @@ class RecentHistoryClassificationSampleProvider:
         records: Sequence[tuple[_HistorySampleRecord, ClassificationFacts]],
     ) -> list[ClassificationFacts | None]:
         """以固定并发上限重新读取详情，并拒绝身份不一致的返回值。"""
-        if self._facts_resolver is None:
+        facts_resolver = self._facts_resolver
+        if facts_resolver is None:
             return [projected for _, projected in records]
         semaphore = asyncio.Semaphore(self._resolve_concurrency)
 
@@ -209,7 +210,7 @@ class RecentHistoryClassificationSampleProvider:
         ) -> ClassificationFacts | None:
             async with semaphore:
                 try:
-                    facts = await self._facts_resolver(record.payload)
+                    facts = await facts_resolver(record.payload)
                 except Exception:  # noqa: BLE001  单条详情失败不应阻断整批分析
                     return None
             if facts is None or _classification_identity_key(facts) != _classification_identity_key(projected):
diff --git a/app/schemas/category.py b/app/schemas/category.py
index 827ac6f0e..b0984bd37 100644
--- a/app/schemas/category.py
+++ b/app/schemas/category.py
@@ -531,7 +531,7 @@ class ClassificationMediaPreviewInput(_ClassificationModel):
     kind: Literal["media"] = Field(default="media", description="预览输入类型")
     media: dict[str, JsonData] = Field(description="从媒体搜索结果选择的媒体信息")
 
-    @model_validator(mode="after")
+    @model_validator(mode="after")  # type: ignore[misc]
     def validate_media_identity(self) -> "ClassificationMediaPreviewInput":
         """确保搜索结果包含分类所需的来源、编号和媒体类型。"""
         source = str(self.media.get("media_source") or "").strip()