saveMediaFromPath method
Saves a media file from a source path (move/copy).
Used when the user picks a file from their device — copies it into the Airpass media directory so it persists independently of the user's original file.
Returns the absolute path where the file was saved.
Implementation
Future<String> saveMediaFromPath({
required String messageId,
required String sourcePath,
required String fileName,
}) async {
final dir = await _getMessageMediaDir(messageId);
final destPath = p.join(dir, fileName);
final sourceFile = File(sourcePath);
await sourceFile.copy(destPath);
_log('Copied media: $sourcePath → $destPath');
return destPath;
}