feat: export author spread metrics

tests/market-content-entry.test.ts

@@ -293,7 +293,10 @@ describe("market-content-entry", () => {
   });
 
   test("renders the plugin action bar inside the native market action row", async () => {
-    document.body.innerHTML = buildMarketFixture();
+    document.body.innerHTML = buildRealMarketFixture([
+      { authorId: "a", authorName: "Alpha", price21To60s: "450000" },
+      { authorId: "b", authorName: "Beta", price21To60s: "70000" }
+    ]);
 
     const { createMarketController } = await import("../src/content/market/index");
     const controller = trackController(createMarketController({
@@ -1217,6 +1220,71 @@ describe("market-content-entry", () => {
     expect(onCsvReady).toHaveBeenCalledWith("csv-output");
   });
 
+  test("export hydrates spread info with attribute_datas.id before building csv", async () => {
+    document.body.innerHTML = buildRealMarketFixture([
+      { authorId: "a", authorName: "Alpha", price21To60s: "450000" },
+      { authorId: "b", authorName: "Beta", price21To60s: "70000" }
+    ]);
+    attachMarketListState([
+      {
+        attribute_datas: {
+          id: "spread-a",
+          nickname: "Alpha"
+        },
+        star_id: "a"
+      },
+      {
+        attribute_datas: {
+          id: "spread-b",
+          nickname: "Beta"
+        },
+        star_id: "b"
+      }
+    ]);
+    const buildCsv = vi.fn(() => "csv-output");
+    const loadSpreadMetrics = vi.fn(async (spreadAuthorId: string) => ({
+      "个人视频_近30天_完播率": spreadAuthorId === "spread-a" ? "28.24%" : "18.24%"
+    }));
+
+    const { createMarketController } = await import("../src/content/market/index");
+    const controller = trackController(createMarketController({
+      buildCsv,
+      document,
+      loadAuthorMetrics: async () => ({
+        success: false,
+        reason: "request-failed"
+      }),
+      loadSpreadMetrics,
+      onCsvReady: vi.fn(),
+      window
+    }));
+
+    await controller.ready;
+    setSelectValue('[data-plugin-export-range="select"]', "current");
+    dispatchChange('[data-plugin-export-range="select"]');
+    click('[data-plugin-export="button"]');
+    await waitForMockCall(buildCsv, 80, 50);
+
+    expect(loadSpreadMetrics).toHaveBeenCalledWith("spread-a");
+    expect(loadSpreadMetrics).toHaveBeenCalledWith("spread-b");
+    expect(buildCsv.mock.calls[0][0]).toEqual([
+      expect.objectContaining({
+        authorId: "a",
+        spreadAuthorId: "spread-a",
+        spreadMetrics: {
+          "个人视频_近30天_完播率": "28.24%"
+        }
+      }),
+      expect.objectContaining({
+        authorId: "b",
+        spreadAuthorId: "spread-b",
+        spreadMetrics: {
+          "个人视频_近30天_完播率": "18.24%"
+        }
+      })
+    ]);
+  });
+
   test(
     "default export captures the first 5 pages and keeps non-empty fields when merging duplicates",
     async () => {