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

apps/server/test/desktop/desktop.test.ts

@@ -52,7 +52,7 @@ function harness(
         status: 200,
         headers: { "content-type": "text/html", "www-authenticate": "Basic", "x-frame-options": "DENY" },
       });
-    }) as typeof fetch,
+    }) as (input: RequestInfo | URL, init?: RequestInit) => Promise<Response>,
   });
   const root = new OpenAPIHono<AuthEnv>();
   root.onError((err, c) => {