feat(sites): 内置公开 BT 站 Nyaa / 蜜柑 / AniBT / AnimeGarden / 萌番组

- 新专用解析器(spiders/public.ts):RSS / Torznab / JSON API,搜索 + 最新列表 + 按资源 ID 取种子或磁力
- 手写定义(definitions/public.ts,public: true),并入内置定义表;定义视图按 public 标为 public_bt
- 添加站点:公开 BT 站可从内置站一键添加(专用适配器、默认定时抓取、默认不进搜索集合),手填 RSS 保留
- 样例取自 2026-10-02 公开接口,截前两条

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/server/test/sources-identity/site-kinds.test.ts

@@ -119,9 +119,36 @@ describe.skipIf(!up)("站点类型:API、调度与 RSS", () => {
     expect(pubWrongAdapter.status).toBe(400);
   });
 
-  it("站点定义都是 PT 站;PT 站带登录与账号数据", async () => {
+  it("内置公开 BT 站:定义标为 public_bt;按定义添加用专用适配器,定时抓最新,不默认进搜索,不能登录", async () => {
     const defs = await json(await h.req("/site-definitions"));
-    expect(defs.body.data.items.every((d: { kind: string }) => d.kind === "pt")).toBe(true);
+    const items = defs.body.data.items as { key: string; kind: string; adapter: string }[];
+    const pub = ["nyaa", "mikan", "anibt", "animegarden", "bangumimoe"];
+    expect(
+      items
+        .filter((d) => d.kind === "public_bt")
+        .map((d) => d.key)
+        .sort(),
+    ).toEqual([...pub].sort());
+    expect(items.filter((d) => !pub.includes(d.key)).every((d) => d.kind === "pt")).toBe(true);
+    const nyaa = await json(
+      await h.req("/sites", { body: { key: "nyaa", name: "Nyaa", adapter: "api", baseUrl: "https://nyaa.si/" } }),
+    );
+    expect(nyaa.status).toBe(200);
+    expect(nyaa.body.data).toMatchObject({
+      kind: "public_bt",
+      adapter: "api",
+      snapshotEnabled: true,
+      searchDefault: false,
+    });
+    expect(nyaa.body.data.capabilities).toEqual(expect.arrayContaining(["search", "list"]));
+    expect(nyaa.body.data.capabilities).not.toContain("login");
+    const wrong = await h.req("/sites", {
+      body: { key: "mikan", kind: "public_bt", name: "蜜柑", adapter: "generic_rss", baseUrl: "https://mikanani.me/" },
+    });
+    expect(wrong.status).toBe(400);
+  });
+
+  it("PT 站定义带登录与账号数据", async () => {
     const pt = await json(
       await h.req("/sites", {
         body: { key: "audiences", name: "观众", adapter: "nexusphp", baseUrl: "https://audiences.invalid/" },