Upgrade dependencies to latest versions - #787

Summary & Motivation

Upgrade .NET, frontend, and developer tooling dependencies to their latest versions.

• Upgrade .NET to 9.0.306 and NuGet packages including Aspire to 9.5.2, Microsoft.OpenApi to 2.x, and Entity Framework to 9.0.10.
• Upgrade frontend packages including Tailwind CSS to v4, Biome to 2.3.4, and TanStack Router.
• Upgrade JetBrains tooling to 2025.2.4 and run code cleanup to fix resulting warnings.
• Upgrade GitHub Actions workflows to use Node.js 24 (current LTS) to support npm 11 lockfile format.
• Update SonarScanner for .NET to 11.0 and use SONAR_TOKEN environment variable for authentication.
• Simplify test execution when SonarCloud is disabled by using dotnet test instead of dotnet dotcover test, to dramatically speed up build times when having many tests.
• Exclude generated Lingui translation files and test results from Biome formatting checks.
• Fix Microsoft.OpenApi 2.x breaking changes in AppGateway API aggregation service.
• Replace Enum.ToString() with nameof(Enum) for all enum comparisons.
• Dynamically discover and kill Aspire processes on ports 9000-9999 to prevent port conflicts.
• Update warning message when services are already running during Aspire AppHost startup.
• Ignore PlatformPlatform agent .workspace folder in .gitignore.
• Fix search input bouncing by replacing manual debounce with useDebounce hook.

Note: Lingui and Rsbuild packages were not upgraded due to @lingui/swc-plugin compatibility constraints. The current version 5.0.1 is compatible with swc_core 0.106.3, while the latest version 5.6.1 requires swc_core 27.0.6. However, Rspack 1.6.1 (used by Rsbuild) bundles swc_core version 46, which is incompatible with both versions of the Lingui plugin. Since SWC plugin support is experimental and does not guarantee semver backwards compatibility between different swc_core versions, upgrading these packages would break the internationalization functionality.

Downstream projects

1. Update GitHub Actions workflows to use Node.js 24 in .github/workflows/your-self-contained-system.yml:

   -  node-version: 20
   +  node-version: 24

2. Update SonarScanner commands for version 11.0 to use SONAR_TOKEN environment variable instead of parameters:

   -dotnet sonarscanner begin /k:"..." /o:"..." /d:sonar.login="${{ secrets.SONAR_TOKEN }}" /d:sonar.host.url="https://sonarcloud.io" ...
   +dotnet sonarscanner begin /k:"..." /o:"..." /d:sonar.host.url="https://sonarcloud.io" ...
   
   -dotnet sonarscanner end /d:sonar.login="${SONAR_TOKEN}"
   +dotnet sonarscanner end

   Note: The SONAR_TOKEN should be set as an environment variable in the step's env: section.

3. Replace dotnet dotcover test with dotnet test when SonarCloud is disabled to speed up builds:

   -dotnet dotcover test your-self-contained-system/YourSystem.slnf --no-build --dcOutput=coverage/dotCover.html --dcReportType=HTML --dcFilters="+:PlatformPlatform.*;-:*.Tests;-:type=*.AppHost.*"
   +dotnet test your-self-contained-system/YourSystem.slnf --no-build

4. If downstream projects have custom components with arbitrary CSS variable syntax, update CSS variable references from brackets to parentheses for Tailwind v4 compatibility:

   -<div className="h-[--visual-viewport-height]" />
   +<div className="h-(--visual-viewport-height)" />

   Note: CSS variable assignments remain unchanged (e.g., [--color:red]).

5. Run the developer CLI format commands to apply new Biome and JetBrains code cleanup rules:

   pp format --backend
   pp format --frontend

Checklist

• I have added tests, or done manual regression tests
• I have updated the documentation, if necessary