fix: 兼容QA检查LLM字段

src/lib/domain/__tests__/validation.test.ts

@@ -182,6 +182,40 @@ describe("domain validation", () => {
     ).toThrow();
   });
 
+  it("normalizes near-valid LLM QA report values", () => {
+    const parsed = qaReportSchema.parse({
+      overall_status: "警告",
+      checks: [
+        {
+          rule_id: "标题质量",
+          status: "警告",
+          evidence: { detail: "标题仍然偏营销化" },
+          reason: { reason: "官网标题需要更克制" },
+          suggested_fix: null,
+          target_agent: "",
+        },
+        {
+          rule_id: "company_name_integrity",
+          status: "通过",
+          evidence: "公司全称一致",
+          reason: "正文保留了事实卡中的公司全称",
+          target_agent: "无",
+        },
+      ],
+    });
+
+    expect(parsed.overall_status).toBe("warn");
+    expect(parsed.checks[0]).toEqual({
+      rule_id: "title_quality",
+      status: "warn",
+      evidence: "标题仍然偏营销化",
+      reason: "官网标题需要更克制",
+      suggested_fix: "",
+      target_agent: null,
+    });
+    expect(parsed.checks[1]?.target_agent).toBeNull();
+  });
+
   it("normalizes object-shaped changed sections from LLM output", () => {
     const parsed = optimizedArticleSchema.parse({
       title: "Optimized article",