fix: migrate Qwen Code CLI from TOML to Markdown format (#1589) (#1730)

* fix: migrate Qwen Code CLI from TOML to Markdown format (#1589)

Qwen Code CLI v0.10.0 deprecated TOML format and fully switched to
Markdown as the core format for configuration and interaction files.

- Update create-release-packages.sh: generate .md files with $ARGUMENTS
  instead of .toml files with {{args}} for qwen agent
- Update create-release-packages.ps1: same change for PowerShell script
- Update AGENTS.md: reflect Qwen's new Markdown format in docs and
  remove Qwen from TOML format section
- Update tests/test_ai_skills.py: add commands_dir_qwen fixture and
  tests covering Markdown-format skills installation for Qwen

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

* fix: update CommandRegistrar qwen config to Markdown format

extensions.py CommandRegistrar.AGENT_CONFIGS['qwen'] was still set to
TOML format, causing `specify extension` to write .toml files into
.qwen/commands, conflicting with Qwen Code CLI v0.10.0+ expectations.

- Change qwen format from toml to markdown
- Change qwen args from {{args}} to $ARGUMENTS
- Change qwen extension from .toml to .md
- Add test to assert qwen config is Markdown format

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

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/workflows/scripts/create-release-packages.ps1

@@ -382,7 +382,7 @@ function Build-Variant {
         }
         'qwen' {
             $cmdDir = Join-Path $baseDir ".qwen/commands"
-            Generate-Commands -Agent 'qwen' -Extension 'toml' -ArgFormat '{{args}}' -OutputDir $cmdDir -ScriptVariant $Script
+            Generate-Commands -Agent 'qwen' -Extension 'md' -ArgFormat '$ARGUMENTS' -OutputDir $cmdDir -ScriptVariant $Script
             if (Test-Path "agent_templates/qwen/QWEN.md") {
                 Copy-Item -Path "agent_templates/qwen/QWEN.md" -Destination (Join-Path $baseDir "QWEN.md")
             }