fix: update gateway watch runner

package.json

@@ -80,7 +80,7 @@
     "ui:build": "node scripts/ui.js build",
     "start": "tsx src/entry.ts",
     "clawdbot": "tsx src/entry.ts",
-    "gateway:watch": "tsx watch src/entry.ts gateway --force",
+    "gateway:watch": "node scripts/gateway-watch.mjs gateway --force",
     "gateway:dev": "CLAWDBOT_SKIP_CHANNELS=1 tsx src/entry.ts --dev gateway",
     "gateway:dev:reset": "CLAWDBOT_SKIP_CHANNELS=1 tsx src/entry.ts --dev gateway --reset",
     "tui": "tsx src/entry.ts tui",

scripts/gateway-watch.mjs

@@ -0,0 +1,53 @@
+#!/usr/bin/env node
+import { spawn } from "node:child_process";
+import { existsSync } from "node:fs";
+import { setTimeout as delay } from "node:timers/promises";
+import process from "node:process";
+
+const args = process.argv.slice(2);
+const env = { ...process.env };
+const cwd = process.cwd();
+
+const tsc = spawn("pnpm", ["exec", "tsc", "--watch", "--preserveWatchOutput"], {
+  cwd,
+  env,
+  stdio: "inherit",
+});
+
+let nodeProcess = null;
+let exiting = false;
+
+async function waitForEntry() {
+  while (!existsSync("dist/entry.js")) {
+    if (exiting) return;
+    await delay(200);
+  }
+}
+
+function startNode() {
+  nodeProcess = spawn(process.execPath, ["--watch", "dist/entry.js", ...args], {
+    cwd,
+    env,
+    stdio: "inherit",
+  });
+}
+
+function cleanup(code = 0) {
+  if (exiting) return;
+  exiting = true;
+  nodeProcess?.kill("SIGTERM");
+  tsc.kill("SIGTERM");
+  process.exit(code);
+}
+
+process.on("SIGINT", () => cleanup(130));
+process.on("SIGTERM", () => cleanup(143));
+process.on("exit", () => cleanup());
+
+tsc.on("exit", (code) => {
+  if (exiting) return;
+  cleanup(code ?? 1);
+});
+
+await waitForEntry();
+if (!exiting) startNode();