Update to Aspire 13.x, Dapr 13.x, and .NET 9.0

[sunnynagavo]

Modernize project by upgrading Aspire and Dapr packages to 13.x and targeting .NET 9.0. Improve documentation for clarity, update dashboard instructions, add ASPIRE_ALLOW_UNSECURED_TRANSPORT for local dev, and introduce settings.json for AppHost path.

Description

This pull request updates the Aspire and Dapr service invocation demo to use the latest Aspire SDK and related packages, improves configuration for development, and clarifies documentation. The most important changes are grouped below:

Dependency and Framework Upgrades:

• Upgraded the Aspire SDK in ServiceInvocationDemo.AppHost.csproj from version 9.3.1 to 13.0.2 and set the target framework to net9.0 for compatibility with the latest Aspire features.
• Updated package references for Aspire.Hosting.AppHost and CommunityToolkit.Aspire.Hosting.Dapr to version 13.x.x for improved support and latest features.

Configuration Improvements:

• Added ASPIRE_ALLOW_UNSECURED_TRANSPORT environment variable to launchSettings.json to enable unsecured transport during development.
• Introduced a new .aspire/settings.json file specifying the path to the application host project for Aspire tooling.

Documentation Updates:

• Revised README.md to refer to Aspire (removing ".NET" prefix), clarified dashboard instructions, and updated feature descriptions for accuracy. [1] [2]

Issue reference

We strive to have all PR being opened based on an issue, where the problem or feature have been discussed prior to implementation.

Please reference the issue this PR will close: #1660

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Extended the documentation

[sunnynagavo]

@WhitWaldo , Tested after the upgrade and the demo Aspire application works smoothly as shown in below figure.

MCP server Icon is added directly into the Aspire dashboard, which directly gives you the MCP server Url to integrate with your MCP client (GitHub Copilot) as shown below

[sunnynagavo]

Front end application Screenshot testing all endpoints:

[sunnynagavo]

@WhitWaldo Since this is a demo application, I dont see any unit tests, let me know if you want me to add.

otherwise please take a look at the change and merge it, if you dont see any issues.

[WhitWaldo]

One minor change as it's already handled in another file and redundant here.

[sunnynagavo]

One minor change as it's already handled in another file and redundant here.

Sure thing, what is it ?

[sunnynagavo]

@WhitWaldo updated new commit. Thank you

[WhitWaldo]

Thank you for putting this together!

[sunnynagavo]

Thank you for putting this together!

Ofcourse, thank you