Fix update-test-baselines scripts and SWA baseline fingerprint normalization for MTP

[maraf]

Summary

Fixes two related issues after the xUnit → MSTest/MTP migration.

1. Fix update-test-baselines scripts

The scripts used xUnit/VSTest-era conventions that no longer work with MTP:

Before	After	Reason
--filter AspNetCore=BaselineTest	--filter "TestCategory=BaselineTest"	xUnit trait → MSTest [TestCategory]
-l "console;verbosity=normal"	-v normal	VSTest logger silently produces zero tests in MTP mode
-e KEY=VALUE	--environment KEY=VALUE	MTP-compatible flag

Also enables MTP runner: adds "test": { "runner": "Microsoft.Testing.Platform" } to global.json and UseMicrosoftTestingPlatformRunner=true for MSTest.Sdk projects in test/Directory.Build.props (MTP package v2.3+ refuses VSTest on .NET 10+ SDK).

2. Fix hardcoded fingerprints in SWA baselines

Commit bcdeca9 introduced hardcoded fingerprints (e.g. blazor.web.js.gon0ccxxql.map.gz) in 24 baseline JSON Route fields. StaticWebAssetsBaselineFactory had no pattern for .{fingerprint}.map(.gz|.br)? source map files, so they were never normalized.

Fix: Added SourceMapFileRegex to WellKnownFileNamePatternsAndReplacements and updated all 24 affected baseline files to use the __fingerprint__ placeholder.

3. Update baseline regeneration instructions

Updated StaticWebAssetsBaselineComparer.cs and the swa-baseline-regeneration skill to reflect the new script invocation (-v normal, --environment, "TestCategory=BaselineTest") and to specify -c Release when building the repo before regenerating baselines.

[Copilot]

Pull request overview

This PR fixes baseline regeneration and static web asset (SWA) baseline stability after the xUnit → MSTest / Microsoft.Testing.Platform (MTP) migration by updating the baseline update scripts, enabling the MTP runner via global.json, and normalizing previously hardcoded source-map fingerprints in SWA baseline manifests.

Changes:

• Update update-test-baselines scripts to use MTP-compatible flags (--project, -v normal, --environment, and --filter "TestCategory=BaselineTest").
• Add source-map fingerprint normalization to StaticWebAssetsBaselineFactory and update affected SWA baseline JSON files to use __fingerprint__.
• Enable the MTP runner via global.json and update baseline regeneration instructions.

Reviewed changes

Copilot reviewed 30 out of 30 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Rebuild_RegeneratesJsonManifestAndCopiesItToOutputFolder.Build.staticwebassets.json	Replace hardcoded .map(.gz) fingerprint routes with __fingerprint__ placeholders.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Rebuild_RegeneratesJsonManifestAndCopiesItToOutputFolder_Rebuild.Build.staticwebassets.json	Replace hardcoded .map(.gz) fingerprint routes with __fingerprint__ placeholders.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Publish_PublishSingleFile_GeneratesPublishJsonManifestAndCopiesPublishAssets.Publish.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz, .map.br) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Publish_PublishSingleFile_GeneratesPublishJsonManifestAndCopiesPublishAssets.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Publish_PublishesJsModuleBundleBundleToTheRightLocation.Publish.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz, .map.br) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Publish_NoBuild_GeneratesPublishJsonManifestAndCopiesPublishAssets.Publish.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz, .map.br) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Publish_NoBuild_GeneratesPublishJsonManifestAndCopiesPublishAssets.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Publish_GeneratesPublishJsonManifestAndCopiesPublishAssets.Publish.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz, .map.br) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Publish_GeneratesPublishJsonManifestAndCopiesPublishAssets.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Publish_CreatesEndpointsForAssets.Publish.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz, .map.br) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Publish_CreatesEndpointsForAssets_BuildAndPublish_Assets.Publish.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz, .map.br) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Clean_RemovesManifestFrom_BuildAndIntermediateOutput.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Build_UpdatesManifest_WhenFilesChange.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Build_UpdatesManifest_WhenFilesChange_Updated.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Build_GeneratesJsonManifestAndCopiesItToOutputFolder.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Build_FingerprintsContent_WhenEnabled.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Build_DoesNotUpdateManifest_WhenHasNotChanged.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Build_DoesNotFailToCompress_TwoAssetsWith_TheSameContent.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Build_DiscoversJsModulesBasedOnPatterns.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Build_DeployOnBuild_GeneratesPublishJsonManifestAndCopiesPublishAssets.Publish.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz, .map.br) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Build_DeployOnBuild_GeneratesPublishJsonManifestAndCopiesPublishAssets.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Build_DefaultDocumentAndSpaFallback_CreatesAdditionalEndpoints.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Build_CreatesEndpointsForAssets.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselines/Build_Can_DisableAssetCaching.Build.staticwebassets.json	Normalize fingerprinted source-map routes (.map, .map.gz) to __fingerprint__.
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselineFactory.cs	Add a regex rule to normalize fingerprinted source-map filenames (`*.{fingerprint}.map(.gz
test/Microsoft.NET.Sdk.StaticWebAssets.Tests/StaticWebAssetsBaselineComparer.cs	Update baseline regeneration instructions to build in Release.
src/RazorSdk/update-test-baselines.sh	Update script to use MTP-compatible dotnet test flags and MSTest category filtering.
src/RazorSdk/update-test-baselines.ps1	Update script to use MTP-compatible dotnet test flags and MSTest category filtering.
global.json	Enable the MTP test runner via "test": { "runner": "Microsoft.Testing.Platform" }.
.claude/skills/swa-baseline-regeneration/SKILL.md	Update documented baseline regeneration commands to match new runner/flags.