feat(2.2.0): 多账号/四种登录/六渠道推送/日志页/深色模式 + 单工程多目标双端（含 Android） - #53

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-dotnet@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

The field 'SettingsViewModel._lastUpdatePct' is assigned but its value is never used

Possible null reference assignment.

The 'AotAssemblies' MSBuild property is deprecated. Edit the project file in a text editor to remove this property, and use the 'RunAOTCompilation' MSBuild property instead.

The field 'SettingsViewModel._lastUpdatePct' is assigned but its value is never used

Possible null reference assignment.

The 'AotAssemblies' MSBuild property is deprecated. Edit the project file in a text editor to remove this property, and use the 'RunAOTCompilation' MSBuild property instead.