Update Microsoft.Extensions.AI to stable version

[stephentoub]

No description provided.

[Copilot]

Pull Request Overview

This PR updates the Microsoft.Extensions.AI dependencies to a newer stable version and adapts the code accordingly.

• Update the method call in CatalogAI.cs to use the new GenerateVectorAsync API.
• Update package versions in Directory.Packages.props for Microsoft.Extensions.AI and related packages.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/Catalog.API/Services/CatalogAI.cs	Replaces the old GenerateEmbeddingVectorAsync call with the new GenerateVectorAsync method call.
Directory.Packages.props	Updates dependency versions to newer stable releases for Microsoft.Extensions.AI packages.

Comments suppressed due to low confidence (2)

src/Catalog.API/Services/CatalogAI.cs:61

• Verify that the new GenerateVectorAsync method returns an array with the expected number of dimensions to support slicing with [0..EmbeddingDimensions].

var embedding = await _embeddingGenerator.GenerateVectorAsync(text);

Directory.Packages.props:66

• [nitpick] Ensure consistency across the Microsoft.Extensions.AI packages, as the stable and preview versions are mixed; aligning versions may simplify maintenance and prevent unexpected behavior.

<PackageVersion Include="Microsoft.Extensions.AI" Version="9.5.0" />

[eerhardt]

I'm doing the same in #837.

[stephentoub]

I'm doing the same in #837.

Ok, feel free to close this one then.

[eerhardt]

I'm doing the same in #837.

Ok, feel free to close this one then.

Sounds good. The Ollama updates are needed as well, so I'll just close this one. All these deps will be updated at once.