fix(web): 大纲错误透传 FriendlyError, 不再向用户暴露内部 code

apps/web/lib/outline/useOutline.test.ts

@@ -61,7 +61,7 @@ describe("useOutline", () => {
     expect(result.current.chapters).toEqual([]);
   });
 
-  it("后端返回业务错误：status=error 并 surface 友好文案", async () => {
+  it("后端返回业务错误：透传 friendly 文案 + 跳转动作（不再固定 OUTLINE_FAILED）", async () => {
     post.mockResolvedValue({
       data: null,
       error: { error: { code: "LLM_UNAVAILABLE" } },
@@ -72,18 +72,36 @@ describe("useOutline", () => {
     });
 
     expect(result.current.status).toBe("error");
-    expect(result.current.error?.code).toBe("OUTLINE_FAILED");
-    expect(result.current.error?.message).toContain("provider");
+    // LLM_UNAVAILABLE → 透传 provider 文案 + 「去设置提供商」链接。
+    expect(result.current.error?.text).toContain("provider");
+    expect(result.current.error?.actionHref).toBe("/settings/providers");
+    expect(result.current.error?.actionLabel).toBe("去设置提供商");
     expect(toast).toHaveBeenCalledWith(expect.any(String), "error");
   });
 
-  it("data 为空且无 error 也走错误分支", async () => {
+  it("校验错误（422 detail 信封）：透传 VALIDATION 文案且无跳转动作", async () => {
+    post.mockResolvedValue({
+      data: null,
+      error: { detail: [{ msg: "字段缺失" }] },
+    });
+    const { result } = renderHook(() => useOutline([]));
+    await act(async () => {
+      await result.current.generate("p1", 1);
+    });
+    expect(result.current.status).toBe("error");
+    expect(result.current.error?.text).toBeTruthy();
+    expect(result.current.error?.actionHref).toBeUndefined();
+    expect(result.current.error?.actionLabel).toBeUndefined();
+  });
+
+  it("data 为空且无 error 也走错误分支（兜底文案、无跳转）", async () => {
     post.mockResolvedValue({ data: null, error: null });
     const { result } = renderHook(() => useOutline([]));
     await act(async () => {
       await result.current.generate("p1", 1);
     });
     expect(result.current.status).toBe("error");
-    expect(result.current.error?.code).toBe("OUTLINE_FAILED");
+    expect(result.current.error?.text).toBeTruthy();
+    expect(result.current.error?.actionHref).toBeUndefined();
   });
 });