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

packages/runtime/test/fixtures/worker.ts

@@ -0,0 +1,37 @@
+import { decodeWorkerRequest, readWorkerRequestText, writeWorkerMessage } from "../../src/worker.ts";
+
+const req = decodeWorkerRequest(await readWorkerRequestText(4096));
+const send = (type: "result", result: unknown) => writeWorkerMessage({ id: req.id, type, result }, 4096);
+switch (req.task) {
+  case "normal":
+    writeWorkerMessage({ id: req.id, type: "progress", value: { bytes: 2 } }, 4096);
+    send("result", req.input);
+    break;
+  case "large":
+    writeWorkerMessage({ id: req.id, type: "result", result: "中文".repeat(200_000) }, 2 * 1024 * 1024);
+    break;
+  case "wrong-id":
+    writeWorkerMessage({ id: "other", type: "result", result: true }, 4096);
+    break;
+  case "truncated":
+    process.stdout.write('{"id":"1"');
+    break;
+  case "oversized":
+    process.stdout.write("x".repeat(8192));
+    break;
+  case "after-result":
+    send("result", true);
+    send("result", false);
+    break;
+  case "failed-exit":
+    send("result", true);
+    process.exitCode = 1;
+    break;
+  case "hang":
+    setInterval(() => {}, 1000);
+    break;
+  case "stderr":
+    process.stderr.write("x".repeat(65536));
+    send("result", true);
+    break;
+}