bundle zstd for module artifact extraction

src/main/index.ts

@@ -71,6 +71,24 @@ function getAppIconPath(): string | undefined {
   return candidates.find((candidate) => existsSync(candidate))
 }
 
+function getBundledResourcePath(...segments: string[]): string | null {
+  const candidates = [
+    join(process.resourcesPath, ...segments),
+    join(process.resourcesPath, 'resources', ...segments),
+    join(process.cwd(), 'resources', ...segments),
+    join(app.getAppPath(), 'resources', ...segments)
+  ]
+
+  return candidates.find((candidate) => existsSync(candidate)) ?? null
+}
+
+function getBundledZstdPath(): string | null {
+  if (process.platform !== 'linux') return null
+  const arch = process.arch === 'arm64' ? 'arm64' : process.arch === 'x64' ? 'x64' : null
+  if (!arch) return null
+  return getBundledResourcePath('bin', `linux-${arch}`, 'zstd')
+}
+
 type CachedModuleFiles = {
   root: string | null
   absoluteRoot: string | null
@@ -610,7 +628,11 @@ async function ensureArtifactFile(url?: string | null, fileName?: string | null,
 
 function tarArgsFor(filePath: string, mode: 'list' | 'extract'): string[] {
   const lower = filePath.toLowerCase()
-  if (lower.endsWith('.tar.zst') || lower.endsWith('.tzst')) return mode === 'list' ? ['--zstd', '-tf'] : ['--zstd', '-xf']
+  if (lower.endsWith('.tar.zst') || lower.endsWith('.tzst')) {
+    const zstdPath = getBundledZstdPath()
+    const compressionArgs = zstdPath ? [`--use-compress-program=${zstdPath}`] : ['--zstd']
+    return mode === 'list' ? [...compressionArgs, '-tf'] : [...compressionArgs, '-xf']
+  }
   if (lower.endsWith('.tar.gz') || lower.endsWith('.tgz')) return mode === 'list' ? ['-tzf'] : ['-xzf']
   return mode === 'list' ? ['-tf'] : ['-xf']
 }
@@ -659,7 +681,8 @@ async function prepareRuntimeImages(images?: RuntimeImageArtifact[] | null): Pro
       continue
     }
     if (filePath.toLowerCase().endsWith('.tar.zst') || filePath.toLowerCase().endsWith('.tzst')) {
-      await runCommand('bash', ['-lc', 'zstd -dc "$1" | docker load', 'autonomy-studio-runtime-image', filePath], undefined, undefined, 900000)
+      const zstdPath = getBundledZstdPath() ?? 'zstd'
+      await runCommand('bash', ['-lc', '"$1" -dc "$2" | docker load', 'autonomy-studio-runtime-image', zstdPath, filePath], undefined, undefined, 900000)
     } else {
       await runCommand('docker', ['load', '-i', filePath], undefined, undefined, 900000)
     }