feat(admin): 模型排序 - 支持搜索并移动到指定位置

web/test/admin-channel-workspace.test.tsx

@@ -48,6 +48,7 @@ test("real model manager renders inline without a second page or back navigation
     expect(html).toContain("模型管理");
     expect(html).toContain("拉取模型");
     expect(html).toContain("新增模型");
+    expect(html).toContain("自定义排序");
     expect(html).toContain("正在加载表格");
     expect(html).not.toContain("admin-page-root");
     expect(html).not.toContain("返回系统渠道");

web/test/channel-presentation.test.tsx

@@ -51,5 +51,8 @@ test("sorting exposes a simple settings entry and moves items without changing t
     expect(moveOrderItem(rows, "c", 0).map((item) => item.id)).toEqual(["c", "a", "b"]);
     expect(moveOrderItem(rows, "a", 2).map((item) => item.id)).toEqual(["b", "c", "a"]);
     expect(moveOrderItem(rows, "a", -1)).toBe(rows);
+    expect(moveOrderItem(rows, "a", 1.5)).toBe(rows);
+    expect(moveOrderItem(rows, "a", Number.NaN)).toBe(rows);
+    expect(moveOrderItem(rows, "a", rows.length)).toBe(rows);
     expect(rows.map((item) => item.id)).toEqual(["a", "b", "c"]);
 });