Fix channel_config uid strategy to use single mode for consistent output folder

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: alfonso-noriega

packages/app/src/cli/models/extensions/specifications/channel.ts

@@ -6,6 +6,7 @@ const FILE_EXTENSIONS = ['json', 'toml', 'yaml', 'yml', 'svg']
 
 const channelSpecificationSpec = createContractBasedModuleSpecification({
   identifier: 'channel_config',
+  uidStrategy: 'single',
   buildConfig: {
     mode: 'copy_files',
     filePatterns: FILE_EXTENSIONS.map((ext) => joinPath(SUBDIRECTORY_NAME, '**', `*.${ext}`)),