fix: Fix scripts/watch-node.mjs and use tsdown --watch.

scripts/watch-node.mjs

@@ -5,11 +5,8 @@ import process from "node:process";
 const args = process.argv.slice(2);
 const env = { ...process.env };
 const cwd = process.cwd();
-const compilerOverride = env.OPENCLAW_TS_COMPILER ?? env.CLAWDBOT_TS_COMPILER;
-const compiler = compilerOverride === "tsc" ? "tsc" : "tsgo";
-const projectArgs = ["--project", "tsconfig.json"];
 
-const initialBuild = spawnSync("pnpm", ["exec", compiler, ...projectArgs], {
+const initialBuild = spawnSync("pnpm", ["build"], {
   cwd,
   env,
   stdio: "inherit",
@@ -19,12 +16,7 @@ if (initialBuild.status !== 0) {
   process.exit(initialBuild.status ?? 1);
 }
 
-const watchArgs =
-  compiler === "tsc"
-    ? [...projectArgs, "--watch", "--preserveWatchOutput"]
-    : [...projectArgs, "--watch"];
-
-const compilerProcess = spawn("pnpm", ["exec", compiler, ...watchArgs], {
+const compilerProcess = spawn("pnpm", ["tsdown", '--watch', 'src/'], {
   cwd,
   env,
   stdio: "inherit",
@@ -39,7 +31,9 @@ const nodeProcess = spawn(process.execPath, ["--watch", "openclaw.mjs", ...args]
 let exiting = false;
 
 function cleanup(code = 0) {
-  if (exiting) return;
+  if (exiting) {
+    return;
+  }
   exiting = true;
   nodeProcess.kill("SIGTERM");
   compilerProcess.kill("SIGTERM");
@@ -50,11 +44,15 @@ process.on("SIGINT", () => cleanup(130));
 process.on("SIGTERM", () => cleanup(143));
 
 compilerProcess.on("exit", (code) => {
-  if (exiting) return;
+  if (exiting) {
+    return;
+  }
   cleanup(code ?? 1);
 });
 
 nodeProcess.on("exit", (code, signal) => {
-  if (signal || exiting) return;
+  if (signal || exiting) {
+    return;
+  }
   cleanup(code ?? 1);
 });