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

apps/server/test/sources-identity/failure-sample.test.ts

@@ -42,7 +42,7 @@ describe.skipIf(!up)("站点失败留样", () => {
     new Response(page, {
       status: 200,
       headers: { "content-type": "text/html; charset=utf-8", server: "nginx" },
-    })) as typeof fetch;
+    })) as (input: RequestInfo | URL, init?: RequestInit) => Promise<Response>;
   const site = () => h.db.selectFrom("site").selectAll().where("id", "=", siteId).executeTakeFirstOrThrow();
   const rows = () =>
     h.db.selectFrom("site_failure_sample").selectAll().where("site_id", "=", siteId).orderBy("created_at").execute();