Add framework targeting to dotnet restore commands in multi-platform workflow

[Copilot]

Multi-target MAUI projects fail CI when dotnet restore attempts to restore all framework dependencies on platform-specific runners (e.g., Windows runner fails with NETSDK1147: workloads must be installed: android).

Changes

Added -f <framework> parameter to dotnet restore commands in all three build jobs:

• Android job: -f net10.0-android
• Windows job: -f net10.0-windows10.0.19041.0
• macOS job: -f net10.0-maccatalyst

Before:

- name: Restore dependencies
  run: dotnet restore zuoleme.csproj

After:

- name: Restore dependencies
  run: dotnet restore zuoleme.csproj -f net10.0-android

This scopes dependency restoration to each runner's target platform, eliminating cross-platform workload conflicts.

Original prompt

问题描述

当前的 GitHub Actions 工作流在 Windows 和其他平台上失败，错误信息为：

error NETSDK1147: To build this project, the following workloads must be installed: android

根本原因

在执行 dotnet restore zuoleme.csproj 时，由于项目文件包含多个目标框架（net10.0-android, net10.0-ios, net10.0-maccatalyst, net10.0-windows10.0.19041.0），dotnet 会尝试恢复所有平台的依赖。

例如：

• Windows runner 尝试恢复 Android 依赖，但没有安装 Android workload
• Ubuntu runner 尝试恢复 Windows/iOS 依赖，但无法在 Linux 上处理这些平台

解决方案

修改 .github/workflows/build.yml 文件，为每个平台的 restore、build 和 publish 命令添加 -f (framework) 参数，只针对特定的目标框架进行操作。

具体修改

1. Android 构建 (build-android job)

- name: Restore dependencies
  run: dotnet restore zuoleme.csproj -f net10.0-android

- name: Build Android APK
  run: dotnet build zuoleme.csproj -c Release -f net10.0-android /p:AndroidPackageFormat=apk

- name: Build Android AAB
  run: dotnet publish zuoleme.csproj -c Release -f net10.0-android /p:AndroidPackageFormat=aab

2. Windows 构建 (build-windows job)

- name: Restore dependencies
  run: dotnet restore zuoleme.csproj -f net10.0-windows10.0.19041.0

- name: Build Windows MSIX
  run: dotnet publish zuoleme.csproj -c Release -f net10.0-windows10.0.19041.0 -p:RuntimeIdentifierOverride=win10-x64

3. macOS 构建 (build-macos job)

- name: Restore dependencies
  run: dotnet restore zuoleme.csproj -f net10.0-maccatalyst

- name: Build macOS Catalyst
  run: dotnet build zuoleme.csproj -c Release -f net10.0-maccatalyst

- name: Publish macOS Catalyst
  run: dotnet publish zuoleme.csproj -c Release -f net10.0-maccatalyst -p:CreatePackage=true

预期结果

修复后，每个 runner 只会处理其对应平台的依赖和构建，避免交叉依赖问题，所有三个平台的构建应该能够成功完成。

要修改的文件

.github/workflows/build.yml - 在第 37、76 和 104 行的 restore 命令中添加框架参数

This pull request was created from Copilot chat.

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