perf(cli): enable compile cache and defer getCliVersion for serve (#5938)

Enable Node.js compile cache (module.enableCompileCache) in the serve
fast-path so V8 bytecode is cached across daemon restarts. Start
getCliVersion() as a non-blocking promise and resolve it in parallel
with the runtime module loads inside buildRuntime(), removing it from
the pre-listen critical path.

scripts/cli-entry.js

@@ -19,6 +19,7 @@
  * independently add --expose-gc via spawnChannel.ts.
  */
 
+import module from 'node:module';
 import { spawnSync } from 'node:child_process';
 import { fileURLToPath, pathToFileURL } from 'node:url';
 import { dirname, join } from 'node:path';
@@ -31,6 +32,7 @@ function isServeCommand() {
 }
 
 if (isServeCommand()) {
+  module.enableCompileCache?.();
   process.argv[1] = cliPath;
   await import(pathToFileURL(cliPath).href);
 } else {