[turbobobbytraykov]

Pull requests had no CI. build-and-deploy.yml runs only on pushes to vnext and main, so a PR that breaks the build is found only after it's merged. This adds PR build (pr-build.yml), which runs on pull requests to vnext and main. It also adds the iOS platform files the samples were missing, so that iOS can be built.

What it runs

• build: the same Debug build on every platform. On each platform it builds the samples browser where it targets that platform, plus the standalone samples.
• What it leaves out: anything that only a deployment needs. There's no AOT and no trimming (a build doesn't do either), no compression (DisableBuildCompression=true skips the .br/.gz copies), no artifact, no deployment and no secrets.

Platform	Runner	Samples browser	Samples
browserwasm	ubuntu-24.04	✓	✓
android	ubuntu-24.04	✓	✓
desktop	ubuntu-24.04	✓	✓
ios	macos-15, simulator build (no signing); Xcode 16.4 for net9.0, 26.0.1 for net10.0	(doesn't target iOS)	✓

• plan: reads the target framework from SamplesBrowser.csproj, so a framework change such as Move to .NET 10 (LTS), keeping Uno.Sdk 6.7.45 #18 moves the builds with it. It also picks the Xcode version for that framework and lists the samples.
  • Which samples: three from different packages (category chart, data grid, geo map), plus up to five that the PR changes. It logs a notice when the PR changes more.
  • All 331 samples share one project template, so three cover the build logic, and the samples browser compiles every sample's code.
• checks: the two checks of the repository's own tools that the deploy build also runs: direct sample links, and the source-viewer self-test.

What only the deploy build covers, after a merge to vnext or main:

• the AOT publish
• trimming
• the publish-time targets (documentation JSON, Open Sans subset, retiring service worker, gzip removal)
• Validate deployable site

A PR that breaks one of those shows up in the vnext build after it's merged, which then doesn't deploy.

iOS platform files

The samples target net*-ios, but they had no Platforms/iOS folder, so iOS never built: Uno.Sdk looked for iOS/Info.plist. Each of the 331 samples and scripts/uno-template (which port-to-uno.ps1 copies into new samples) now has:

• Info.plist, Entitlements.plist and Main.iOS.cs, taken from Uno.Templates 6.7.45. The entry point starts the app with UnoPlatformHostBuilder…UseAppleUIKit(), as Uno 6 apps do, and calls the samples' App.InitializeLogging().
• Two deliberate differences from Uno's template:
  • UIRequiredDeviceCapabilities lists only arm64, since .NET for iOS is 64-bit only.
  • No PrivacyInfo.xcprivacy (only needed for App Store submission, and the template's copy isn't a well-formed privacy manifest) and no launch-image catalog (it names no images; the splash comes from Assets/Splash/splash_screen.svg).

Mac Catalyst can't be built yet

The samples also target net*-maccatalyst, but that can't link with Uno 6.7's Skia renderer:

• Uno's Apple runtime, Uno.WinUI.Runtime.Skia.AppleUIKit 6.7.359, depends on Uno.icu-ios, for Mac Catalyst too. That package (77.3.2, and 77.4.1 as well) ships only iOS device and simulator libraries.
• The result is ld: building for 'macCatalyst', but linking in object file (…/uno.icu-ios/77.3.2/…/libicuuc.a) built for 'iOS', on .NET 9 (an earlier run of this PR) and on .NET 10 (temporary draft [Temporary, do not merge] PR build on .NET 10 #22, now closed).
• Uno's own 6.x project templates no longer include a Mac Catalyst folder. Uno.Templates 5.6.54 was the last one that did.

So the matrix leaves Mac Catalyst out, and the workflow comment says why. Files in this repository can't fix it. The options are to drop net*-maccatalyst from the samples' target frameworks (on macOS they run through the desktop target), or to keep it and ask Uno for a Mac Catalyst ICU build.

Notes

• build-and-deploy.yml is unchanged.
• Markdown-only PRs are skipped, as for the deploy build.
• Open PRs: GitHub runs a PR's checks on its merge commit with the base branch. So Set explicit Cache-Control headers for the WebAssembly site #16–Keep the gzip copy of dotnet.native.wasm #19 get these checks on their next push after this merges, or after Update branch.
• Cost: this is a public repository, so GitHub-hosted runners, macOS included, are free.

Results

Run 43006310901 on this PR (.NET 9) passed, with no artifact. It took about 14 minutes in all, since the jobs run in parallel.

Job	Time
plan	7 s
checks	20 s
build (desktop)	1.6 min
build (browserwasm)	9.3 min
build (ios)	9.6 min
build (android)	13.7 min

On .NET 10, temporary draft #22 (#18 combined with an earlier version of this workflow) built every platform except Mac Catalyst.

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