feat: P2 operator, preprocessing state/service, and runtime config lease

backend/test/tht-runner.test.ts

@@ -10,18 +10,22 @@ import { ThtRunner } from "../src/tht/tht-runner.js";
 
 // Spy on child_process.spawn so we can capture the resolved argv (incl. -c config)
 // that ThtRunner.run() builds, without launching a real process.
-vi.mock("node:child_process", () => ({
-  spawn: vi.fn(() => {
-    const ch: any = new EventEmitter();
-    ch.stdout = new EventEmitter();
-    ch.stderr = new EventEmitter();
-    queueMicrotask(() => {
-      ch.stdout.emit("data", Buffer.from('{"id":"x"}'));
-      ch.emit("close", 0);
-    });
-    return ch;
-  }),
-}));
+vi.mock("node:child_process", async (importOriginal) => {
+  const actual = await importOriginal<typeof import("node:child_process")>();
+  return {
+    ...actual,
+    spawn: vi.fn(() => {
+      const ch: any = new EventEmitter();
+      ch.stdout = new EventEmitter();
+      ch.stderr = new EventEmitter();
+      queueMicrotask(() => {
+        ch.stdout.emit("data", Buffer.from('{"id":"x"}'));
+        ch.emit("close", 0);
+      });
+      return ch;
+    }),
+  };
+});
 import { spawn } from "node:child_process";
 
 test("sessionNew parses id from JSON", async () => {