refactor(core): migrate to Bun and converge acquisition policies and Agent boundaries

packages/adapters/src/sites/spider/challenge-page.test.ts

@@ -38,7 +38,7 @@ function adapter(body: string, status = 200, headers: Record<string, string> = {
     new Response(body, {
       status,
       headers: { "content-type": "text/html; charset=utf-8", ...headers },
-    })) as typeof fetch;
+    })) as (input: RequestInfo | URL, init?: RequestInit) => Promise<Response>;
   const a = createSpiderSiteAdapter(audiencesDefinition, {
     baseUrl: "https://aud.test/",
     secrets: staticSecretResolver({ [audiencesDefinition.id]: { cookie: "c_secure_uid=1; c_secure_pass=abc" } }),

packages/adapters/src/sites/spider/detail-page.test.ts

@@ -176,7 +176,7 @@ describe("详情页扩展内容(憨憨 2026 真实结构:分节 div,无 #kdescr)
       paths.push(`${u.pathname}${u.search}`);
       const body = u.pathname === "/viewfilelist.php" ? HHANCLUB_FILELIST_FRAGMENT : HHANCLUB_DETAIL_PAGE_2026;
       return new Response(body, { status: 200, headers: { "content-type": "text/html; charset=utf-8" } });
-    }) as typeof globalThis.fetch;
+    }) as (input: RequestInfo | URL, init?: RequestInit) => Promise<Response>;
     const limiter = createSiteRateLimiter({ minIntervalMs: 0 });
     const a = createSpiderSiteAdapter(hhanclubDefinition, {
       fetch,