feat: Add GitHub Actions automated build workflow

[Copilot]

No CI build workflow existed for the Haiyu WinUI3/.NET 10 app — only MirrorChyan release-upload workflows were present.

Changes

• .github/workflows/build.yml — new CI/CD workflow:
  • Triggers on push/PR to main/master and on release: published
  • windows-latest runner (required for WinUI3 + Native AOT)
  • Installs .NET 10.0.x SDK, restores with -p:Platform=x64, publishes via the existing win-x64 publish profile
  • Uploads bin/win-x64/publish/ as a Haiyu artifact
  • permissions: contents: read scoped to minimum required

env:
  PROJECT_PATH: src/WutheringWavesTool/Haiyu.csproj
  PUBLISH_DIR: src/WutheringWavesTool/bin/win-x64/publish

jobs:
  build:
    runs-on: windows-latest
    permissions:
      contents: read
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-dotnet@v4
        with:
          dotnet-version: '10.0.x'
      - run: dotnet restore ${{ env.PROJECT_PATH }} -p:Platform=x64
      - run: dotnet publish ${{ env.PROJECT_PATH }} -p:PublishProfile=win-x64
      - uses: actions/upload-artifact@v4
        with:
          name: Haiyu
          path: ${{ env.PUBLISH_DIR }}

[Copilot]

Pull request overview

Adds a GitHub Actions CI build pipeline for the WinUI3/.NET 10 Haiyu app so pushes/PRs (and releases) automatically produce a publish output artifact.

Changes:

• Introduces a new Build workflow triggered on push/PR to main/master and release: published.
• Restores and publishes src/WutheringWavesTool/Haiyu.csproj using the existing win-x64 publish profile.
• Uploads the publish output directory as a Haiyu workflow artifact with minimal contents: read permissions.

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[Copilot]

actions/upload-artifact defaults to only warning when the path matches no files, which can let the job succeed while producing no artifact if the publish output path ever changes. Consider setting if-no-files-found: error to fail fast when the publish directory is missing/empty.

Suggested change

	path: ${{ env.PUBLISH_DIR }}
	path: ${{ env.PUBLISH_DIR }}
	if-no-files-found: error

[Copilot]

The workflow publishes but never runs the repo’s unit tests (there is a test project under src/Project.Test). Consider adding a dotnet test step (typically after restore/build) so CI catches regressions before publishing artifacts.

Suggested change

	- name: Test
	run: dotnet test

[Copilot]

dotnet publish will perform an implicit restore by default, so the separate Restore step can be redundant and slow. If you want to keep the explicit restore, consider adding --no-restore to the publish command to avoid doing dependency resolution twice.

Suggested change

	run: dotnet publish ${{ env.PROJECT_PATH }} -p:PublishProfile=win-x64
	run: dotnet publish ${{ env.PROJECT_PATH }} -p:PublishProfile=win-x64 --no-restore