🐛 remove undici-pulling import so PR-title check runs without yarn install

The lint workflow runs node directly without `yarn install` to keep it fast.
Importing helpers from `executionUtils.ts` pulled `undici` in transitively,
which failed at module resolution time on CI. Switch to plain console + exit.

Author: thomas-lebeau

scripts/check-pr-title.ts

@@ -1,4 +1,3 @@
-import { printError, printLog, runMain } from './lib/executionUtils.ts'
 import { GITMOJI, normalizeGitmoji } from './lib/gitmoji.ts'
 
 export function isValidPrTitle(title: string): boolean {
@@ -11,23 +10,21 @@ export function formatAllowedPrefixes(): string {
 }
 
 if (import.meta.main) {
-  runMain(() => {
-    const title = process.env.PR_TITLE
-    if (title === undefined) {
-      throw new Error('PR_TITLE environment variable is not set.')
-    }
-
-    if (isValidPrTitle(title)) {
-      printLog(`PR title OK: ${title}`)
-      return
-    }
+  const title = process.env.PR_TITLE
+  if (title === undefined) {
+    console.error('PR_TITLE environment variable is not set.')
+    process.exit(1)
+  }
 
-    printError(
+  if (isValidPrTitle(title)) {
+    console.log(`PR title OK: ${title}`)
+  } else {
+    console.error(
       `PR title must start with one of the allowed gitmoji prefixes.\n\n` +
         `Current title: ${title}\n\n` +
         `Allowed prefixes:\n${formatAllowedPrefixes()}\n\n` +
         `See docs/DEVELOPMENT.md for the full convention.`
     )
     process.exit(1)
-  })
+  }
 }