perf(cli): enable Node module compile cache (#2092)

* perf(cli): enable Node module compile cache

Warm CLI invocations spend substantial time compiling the bundled ESM entrypoint. Enable Node's optional on-disk compile cache only in the process that imports the bundle, while preserving early Node 22 compatibility and making cache failures non-fatal.

Add deterministic launcher coverage, packaging checks, and a reproducible benchmark procedure so the startup benefit can be measured without flaky CI thresholds.

* fix(ci): isolate minimum Node launcher check

The full validation suite depends on knip and oxc-parser behavior unavailable in Node 22.0.0. Keep full CI on the active Node 22 line and exercise the declared runtime floor in a dedicated build-and-launch job.

* fix(benchmark): harden startup measurements

Keep environment setup outside the timed process window, document the API's Node 22.8 floor, and preserve completed benchmark results when git metadata is unavailable.

* test(cli): verify compile cache disable behavior

Pair NODE_DISABLE_COMPILE_CACHE with a temporary cache directory and assert that supported Node releases leave it empty while preserving normal launcher output.

bin/node-compile-cache.mjs

@@ -0,0 +1,17 @@
+import * as nodeModule from 'node:module'
+
+/** @typedef {{ enableCompileCache?: () => unknown }} CompileCacheModule */
+
+/**
+ * @param {CompileCacheModule} [module=nodeModule]
+ */
+export function enableNodeCompileCacheIfAvailable(module = nodeModule) {
+  const enable = module.enableCompileCache
+  if (typeof enable !== 'function') return
+
+  try {
+    enable()
+  } catch {
+    // Compile caching is optional and must never block startup.
+  }
+}

bin/openclaude

@@ -11,6 +11,7 @@ import { existsSync } from 'fs'
 import { join, dirname } from 'path'
 import { fileURLToPath, pathToFileURL } from 'url'
 import { spawnSync } from 'child_process'
+import { enableNodeCompileCacheIfAvailable } from './node-compile-cache.mjs'
 
 const __dirname = dirname(fileURLToPath(import.meta.url))
 const distPath = join(__dirname, '..', 'dist', 'cli.mjs')
@@ -107,6 +108,7 @@ function relaunchWithLongSessionHeapIfNeeded() {
 
 if (existsSync(distPath)) {
   relaunchWithLongSessionHeapIfNeeded()
+  enableNodeCompileCacheIfAvailable()
   await import(pathToFileURL(distPath).href)
 } else {
   console.error(`