[mattleibow]

Summary

• Keep supported snippets.5000.json web entry points for all four existing MAUI Blazor Hybrid solutions, preserving shared Razor library and hosted WebAssembly compilation.
• Build the native apps for Android, Windows, iOS Simulator, and Mac Catalyst across the .NET 8, 9, and 10 Hybrid samples: 16 project/platform combinations in six jobs.
• Install isolated, matching .NET SDK/workload sets and select compatible, complete Xcode installations. Android prerequisites are installed through the SDK's InstallAndroidDependencies target. Apple builds don't need distribution certificates; no apps or simulators are launched.
• Scope native restore using .github/maui-ci.targets without retargeting the referenced shared libraries. No sample C#, Razor, project, or solution files change.
• Select affected samples using the PR's changed paths, including renamed paths. Workflow or CI-targets changes rebuild all four native samples; unrelated changes don't start native builds.

Why

The Snippets 5000 failure on #686 occurs during full-solution restore with NETSDK1147: the generic Windows runner doesn't have the MAUI workloads or Apple toolchain needed by the multi-platform solution. The web dependency graph and native apps now have separate, appropriate build environments rather than dropping native coverage.

Samples	SDK/workload set	macOS runner	Xcode
.NET 8 Hybrid	8.0.427	macos-15	16.4
.NET 9 Hybrid and Identity	9.0.320	macos-26	26.5
.NET 10 Identity	10.0.400	macos-26	26.6

Android and Windows builds use windows-2022 with Java 17. The .NET 8 Apple job uses the complete preinstalled Xcode 16.4 SDK/runtime stack rather than the older Xcode symlink or a legacy runtime download.

Validation

• Full native + web GitHub Actions run passed at 3eafb6b2d44b3a6a0daed4d1d5cc8dbb924187d4. All six MAUI jobs and the Snippets 5000 web job succeeded. Build logs confirm all 16 native project/platform outputs, including both .NET 9 native apps.
• Workflow linting passes. Exact workflow-script checks cover changed-sample selection, renamed paths, Android prerequisites, all 16 native commands, unsigned Apple runtime IDs, and failure propagation.
• Actual .NET 8/9/10 project evaluation verifies native platform selection. A real .NET 10 restore confirms that only the requested native target is restored while the shared library remains net10.0.
• All four local web/shared graphs and an isolated Add WebAssembly to the .NET 10 Blazor Hybrid Identity sample #686 fixture including its hosted WASM client also built successfully.

This PR is based directly on main and remains separate from #686. Identity and Entra feature sessions are untouched. No merge or auto-merge is enabled.