.NET: Switch to using new community toolkit VectorData packages

[westey-m]

Motivation and Context

Description

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the Contribution Guidelines
• All unit tests pass, and I have added new tests where possible
• Is this a breaking change? If yes, add "[BREAKING]" prefix to the title of the PR.

[Copilot]

Pull request overview

Updates the .NET sample apps to use the newer CommunityToolkit.VectorData.* vector store connector packages (InMemory + Qdrant) instead of the older Semantic Kernel connector packages, aligning the samples with the current VectorData ecosystem.

Changes:

• Replace Microsoft.SemanticKernel.Connectors.* package references/usings in samples with CommunityToolkit.VectorData.* equivalents.
• Update the vector attribute usage in the Qdrant custom-schema sample to match the new attribute API usage.
• Bump central package versions for Microsoft.Extensions.AI and Microsoft.Extensions.VectorData.Abstractions, and introduce central versions for the new CommunityToolkit connector packages.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
dotnet/samples/02-agents/AgentWithRAG/AgentWithRAG_Step02_CustomVectorStoreRAG/Program.cs	Switch Qdrant connector namespace and update vector attribute argument naming.
dotnet/samples/02-agents/AgentWithRAG/AgentWithRAG_Step02_CustomVectorStoreRAG/AgentWithRAG_Step02_CustomVectorStoreRAG.csproj	Swap Qdrant package reference to CommunityToolkit connector.
dotnet/samples/02-agents/AgentWithRAG/AgentWithRAG_Step01_BasicTextRAG/Program.cs	Switch InMemory connector namespace to CommunityToolkit.
dotnet/samples/02-agents/AgentWithRAG/AgentWithRAG_Step01_BasicTextRAG/AgentWithRAG_Step01_BasicTextRAG.csproj	Swap InMemory package reference to CommunityToolkit connector.
dotnet/samples/02-agents/AgentWithMemory/AgentWithMemory_Step05_BoundedChatHistory/Program.cs	Switch InMemory connector namespace to CommunityToolkit.
dotnet/samples/02-agents/AgentWithMemory/AgentWithMemory_Step05_BoundedChatHistory/AgentWithMemory_Step05_BoundedChatHistory.csproj	Swap InMemory package reference to CommunityToolkit connector.
dotnet/samples/02-agents/AgentWithMemory/AgentWithMemory_Step01_ChatHistoryMemory/Program.cs	Switch InMemory connector namespace to CommunityToolkit.
dotnet/samples/02-agents/AgentWithMemory/AgentWithMemory_Step01_ChatHistoryMemory/AgentWithMemory_Step01_ChatHistoryMemory.csproj	Swap InMemory package reference to CommunityToolkit connector.
dotnet/samples/02-agents/Agents/Agent_Step04_3rdPartyChatHistoryStorage/Program.cs	Switch InMemory connector namespace to CommunityToolkit.
dotnet/samples/02-agents/Agents/Agent_Step04_3rdPartyChatHistoryStorage/Agent_Step04_3rdPartyChatHistoryStorage.csproj	Swap InMemory package reference to CommunityToolkit connector.
dotnet/Directory.Packages.props	Central package updates: add CommunityToolkit connector versions and bump relevant Microsoft.Extensions.* versions.

Comments suppressed due to low confidence (1)

dotnet/Directory.Packages.props:80

• Microsoft.Extensions.AI / Microsoft.Extensions.AI.Abstractions were bumped to 10.5.2, but Microsoft.Extensions.AI.OpenAI remains at 10.5.1. To avoid version skew within the same component set (and potential transitive dependency resolution issues), update Microsoft.Extensions.AI.OpenAI to the matching patch version as well (or keep the AI packages on 10.5.1 if 10.5.2 isn’t required).

    <PackageVersion Include="Microsoft.Extensions.AI" Version="10.5.2" />
    <PackageVersion Include="Microsoft.Extensions.AI.Abstractions" Version="10.5.2" />
    <PackageVersion Include="Microsoft.Extensions.AI.Evaluation" Version="10.4.0" />
    <PackageVersion Include="Microsoft.Extensions.AI.Evaluation.Quality" Version="10.4.0" />
    <PackageVersion Include="Microsoft.Extensions.AI.Evaluation.Safety" Version="10.3.0-preview.1.26109.11" />
    <PackageVersion Include="Microsoft.Extensions.AI.OpenAI" Version="10.5.1" />
    <PackageVersion Include="Microsoft.Extensions.Caching.Memory" Version="10.0.0" />

[github-actions]

Automated Code Review

Reviewers: 4 | Confidence: 89% | Result: All clear

Reviewed: Correctness, Security Reliability, Test Coverage, Design Approach

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Automated review by westey-m's agents

[Vijay-Nirmal]

I found the top secret https://github.com/CommunityToolkit/AI 🚀 , but sadly, no access 😢