fix: match Xingtu profile endpoints

tests/audience-profile-client.test.ts

@@ -1,6 +1,7 @@
 import { describe, expect, test, vi } from "vitest";
 
 import {
+  AUDIENCE_PROFILE_TARGETS,
   createAudienceProfileClient,
   mapAudienceProfileResponse
 } from "../src/content/market/audience-profile-client";
@@ -21,10 +22,10 @@ describe("audience-profile-client", () => {
       authorId: "7294473194298146854",
       authorName: "奇奇de海洋",
       status: "success"
-    }, 3);
+    }, AUDIENCE_PROFILE_TARGETS.audience);
 
     expect(fetchImpl).toHaveBeenCalledWith(
-      "https://www.xingtu.cn/gw/api/data_sp/author_audience_distribution?o_author_id=7294473194298146854&platform_source=1&platform_channel=1&link_type=3",
+      "https://www.xingtu.cn/gw/api/data_sp/author_audience_distribution?o_author_id=7294473194298146854&platform_source=1&platform_channel=1&link_type=5",
       expect.objectContaining({
         credentials: "include",
         method: "GET"
@@ -42,6 +43,32 @@ describe("audience-profile-client", () => {
     );
   });
 
+  test("loads fans and iron fan profiles from Xingtu fan distribution endpoint", async () => {
+    const fetchImpl = vi.fn(async () => ({
+      json: async () => buildAudiencePayload(),
+      ok: true
+    }));
+    const client = createAudienceProfileClient({
+      baseUrl: "https://www.xingtu.cn",
+      fetchImpl,
+      timeoutMs: 1000
+    });
+
+    await client.loadAudienceProfile({
+      authorId: "7294473194298146854",
+      authorName: "奇奇de海洋",
+      status: "success"
+    }, AUDIENCE_PROFILE_TARGETS.longtimeFans);
+
+    expect(fetchImpl).toHaveBeenCalledWith(
+      "https://www.xingtu.cn/gw/api/data_sp/get_author_fans_distribution?o_author_id=7294473194298146854&platform_source=1&author_type=5",
+      expect.objectContaining({
+        credentials: "include",
+        method: "GET"
+      })
+    );
+  });
+
   test("maps Xingtu audience distribution payload into named profile sections", () => {
     const result = mapAudienceProfileResponse(buildAudiencePayload());