Add comprehensive Model Configuration (model_list) section to all 6 language versions:
- English, Chinese (zh), French (fr), Japanese (ja), Portuguese (pt-br), Vietnamese (vi)
Key additions:
- Complete vendor list (17 providers) with protocol prefixes and API base URLs
- Basic and vendor-specific configuration examples
- Load balancing documentation
- Migration guide from legacy providers config
- Multi-agent support design rationale
Replace Chinese vendor names with English/Pinyin in non-Chinese versions for better readability.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
yinwm