update for flac metadata on iphone/rpi

scripts/setup-mpv-handler.mjs

@@ -156,22 +156,43 @@ function resolveRoot(options) {
   }
 
   if (process.platform === 'linux') {
-    fail('Could not find a Linux mpv-handler release. Download and extract the upstream archive, then pass --root /path/to/extracted/mpv-handler-linux-amd64.')
+    const archHint = process.arch === 'x64'
+      ? 'Download and extract the upstream archive, then pass --root /path/to/extracted/mpv-handler-linux-amd64.'
+      : `The upstream project only publishes an official linux-amd64 archive. On ${process.arch}, build or obtain a compatible mpv-handler binary and pass --root /path/to/extracted/mpv-handler.`
+    fail(`Could not find a Linux mpv-handler release. ${archHint}`)
   }
 
   fail('Automatic setup is not available for this platform yet.')
 }
 
+function getLinuxConfigDir() {
+  const xdgConfigHome = process.env.XDG_CONFIG_HOME?.trim()
+  return xdgConfigHome
+    ? path.join(xdgConfigHome, 'mpv-handler')
+    : path.join(os.homedir(), '.config', 'mpv-handler')
+}
+
+function getConfigPath(rootPath) {
+  if (process.platform === 'linux') {
+    return path.join(getLinuxConfigDir(), 'config.toml')
+  }
+
+  return path.join(rootPath, 'config.toml')
+}
+
 function ensureConfig(rootPath, options) {
-  const configPath = path.join(rootPath, 'config.toml')
+  const configPath = getConfigPath(rootPath)
   if (options.skipConfig) {
     return { configPath, changed: false, mpvPath: '', ytdlPath: '' }
   }
 
   const configExists = existsSync(configPath)
+  const bundledConfigPath = path.join(rootPath, 'config.toml')
   const content = configExists
     ? readFileSync(configPath, 'utf8')
-    : readFileSync(templateConfigPath, 'utf8')
+    : existsSync(bundledConfigPath)
+      ? readFileSync(bundledConfigPath, 'utf8')
+      : readFileSync(templateConfigPath, 'utf8')
 
   const detectedMpv = options.mpv || resolveOnPath(process.platform === 'win32' ? ['mpv.com', 'mpv.exe', 'mpv'] : ['mpv'])
   const detectedYtdl = options.ytdl || resolveOnPath(process.platform === 'win32' ? ['yt-dlp.exe', 'yt-dlp'] : ['yt-dlp'])
@@ -192,6 +213,7 @@ function ensureConfig(rootPath, options) {
   }
 
   if (changed && !options.dryRun) {
+    mkdirSync(path.dirname(configPath), { recursive: true })
     writeFileSync(configPath, nextContent, 'utf8')
   }