refactor(scripts): convert Promise.all to Promise.allSettled for readme updates and validation

Converts Promise.all to Promise.allSettled in README generation, package
validation, and release utilities to prevent memory leaks from short-circuited
rejected promises.

Changes:
- scripts/update-npm-readmes.mjs: parallel README writes use Promise.allSettled
- scripts/testing/validate-package-tests.mjs: validation checks use Promise.allSettled
- scripts/release-npm-packages.mjs: package hash comparisons use Promise.allSettled

Author: jdalton

scripts/release-npm-packages.mjs

@@ -238,11 +238,16 @@ async function hasPackageChanged(pkg, manifest_, options) {
   let changed = false
   // Compare actual file contents by extracting packages and comparing SHA hashes.
   try {
-    const { 0: remoteHashes, 1: localHashes } = await Promise.all([
+    const results = await Promise.allSettled([
       getRemotePackageFileHashes(`${pkg.name}@${manifest.version}`),
       getLocalPackageFileHashes(pkg.path),
     ])
 
+    const remoteHashes =
+      results[0].status === 'fulfilled' ? results[0].value : {}
+    const localHashes =
+      results[1].status === 'fulfilled' ? results[1].value : {}
+
     // Use remote files as source of truth and check if local matches.
     for (const { 0: file, 1: remoteHash } of Object.entries(remoteHashes)) {
       const localHash = localHashes[file]

scripts/testing/validate-package-tests.mjs

@@ -387,9 +387,11 @@ async function validatePackage(packageName) {
     validateDependencies(packageName, packageDir),
   ]
 
-  const results = await Promise.all(validations)
-  for (const issues of results) {
-    allIssues.push(...issues)
+  const settled = await Promise.allSettled(validations)
+  for (const result of settled) {
+    if (result.status === 'fulfilled') {
+      allIssues.push(...result.value)
+    }
   }
 
   return {

scripts/update-npm-readmes.mjs

@@ -40,7 +40,7 @@ async function main() {
     return
   }
   const npmPackageNames = getNpmPackageNames()
-  await Promise.all(
+  await Promise.allSettled(
     npmPackageNames.map(async sockRegPkgName => {
       const pkgPath = path.join(NPM_PACKAGES_PATH, sockRegPkgName)
       const readmePath = path.join(pkgPath, README_MD)