聚合分组功能正式发布！

What's Changed

• feat: Aggregate groups by @tbphp in https://github.com/tbphp/gpt-load/pull/280
• fix: Add subgroup notfound by @tbphp in https://github.com/tbphp/gpt-load/pull/304
• fix: Gemini test payload by @tbphp in https://github.com/tbphp/gpt-load/pull/305
• fix: Dashboard stats error by @tbphp in https://github.com/tbphp/gpt-load/pull/306
• feat: Optimize aggregate group UI by @tbphp in https://github.com/tbphp/gpt-load/pull/310
• feat: Integrate into New API by @tbphp in https://github.com/tbphp/gpt-load/pull/312
• fix: Display aggregate group in log detail by @tbphp in https://github.com/tbphp/gpt-load/pull/313

Full Changelog: https://github.com/tbphp/gpt-load/compare/v1.2.1...v1.3.0