feat: rename .NET package to Neo4j.AgentFramework.GraphRAG

[ltwlf]

Summary

Rename the .NET package from Neo4j.AgentFramework to Neo4j.AgentFramework.GraphRAG to distinguish it from the separate Neo4j Memory provider (neo4j-agent-memory).

This matches the Python naming intent where agent-framework-neo4j is specifically the GraphRAG retrieval provider, as documented in microsoft/agent-framework#4010.

Changes

• Rename directories: Neo4j.AgentFramework → Neo4j.AgentFramework.GraphRAG
• Rename NuGet PackageId: Neo4j.AgentFramework.GraphRAG
• Update all namespaces, project references, solution file, sample usings
• Update CI/CD workflow pack path and NuGet URL
• Update CLAUDE.md and dotnet/README.md

Test plan

• dotnet build — succeeds
• dotnet test — 48 tests passing

[Copilot]

Pull request overview

Renames the .NET Neo4j GraphRAG provider package to Neo4j.AgentFramework.GraphRAG to clearly differentiate it from other Neo4j Agent Framework-related packages (e.g., the separate memory provider), aligning naming intent across languages.

Changes:

• Renamed the .NET library/test project directories and updated the solution/project references accordingly.
• Updated namespaces/usings across library, tests, and samples to Neo4j.AgentFramework.GraphRAG (and .Retrieval).
• Updated packaging/release documentation and the NuGet pack/publish workflow to target the renamed project/package.

Reviewed changes

Copilot reviewed 27 out of 27 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
dotnet/tests/Neo4j.AgentFramework.Tests/GlobalUsings.cs	Removes old test project global usings as part of test project rename/removal.
dotnet/tests/Neo4j.AgentFramework.GraphRAG.Tests/VectorRetrieverTests.cs	Updates namespace/imports to new GraphRAG namespaces.
dotnet/tests/Neo4j.AgentFramework.GraphRAG.Tests/StopWordsTests.cs	Updates test namespace to GraphRAG.
dotnet/tests/Neo4j.AgentFramework.GraphRAG.Tests/ResultFormattingTests.cs	Updates namespace/imports to GraphRAG retrieval.
dotnet/tests/Neo4j.AgentFramework.GraphRAG.Tests/Neo4jContextProviderTests.cs	Updates namespace/imports to GraphRAG retrieval.
dotnet/tests/Neo4j.AgentFramework.GraphRAG.Tests/Neo4jContextProviderOptionsTests.cs	Updates test namespace to GraphRAG.
dotnet/tests/Neo4j.AgentFramework.GraphRAG.Tests/Neo4j.AgentFramework.GraphRAG.Tests.csproj	Points tests to renamed library project reference.
dotnet/tests/Neo4j.AgentFramework.GraphRAG.Tests/HybridRetrieverTests.cs	Updates namespace/imports to GraphRAG retrieval.
dotnet/tests/Neo4j.AgentFramework.GraphRAG.Tests/GlobalUsings.cs	Adds GraphRAG global using for tests.
dotnet/tests/Neo4j.AgentFramework.GraphRAG.Tests/FulltextRetrieverTests.cs	Updates namespace/imports to GraphRAG retrieval.
dotnet/src/Neo4j.AgentFramework.GraphRAG/StopWords.cs	Moves stop words utility into GraphRAG namespace.
dotnet/src/Neo4j.AgentFramework.GraphRAG/Retrieval/VectorRetriever.cs	Moves retriever into GraphRAG.Retrieval namespace.
dotnet/src/Neo4j.AgentFramework.GraphRAG/Retrieval/RetrieverResult.cs	Moves result types into GraphRAG.Retrieval namespace.
dotnet/src/Neo4j.AgentFramework.GraphRAG/Retrieval/IRetriever.cs	Moves interface into GraphRAG.Retrieval namespace.
dotnet/src/Neo4j.AgentFramework.GraphRAG/Retrieval/HybridRetriever.cs	Moves hybrid retriever into GraphRAG.Retrieval namespace.
dotnet/src/Neo4j.AgentFramework.GraphRAG/Retrieval/FulltextRetriever.cs	Moves fulltext retriever into GraphRAG.Retrieval namespace.
dotnet/src/Neo4j.AgentFramework.GraphRAG/Neo4jSettings.cs	Moves settings into GraphRAG namespace.
dotnet/src/Neo4j.AgentFramework.GraphRAG/Neo4jContextProviderOptions.cs	Moves options into GraphRAG namespace.
dotnet/src/Neo4j.AgentFramework.GraphRAG/Neo4jContextProvider.cs	Updates provider namespace and retrieval using to GraphRAG.
dotnet/src/Neo4j.AgentFramework.GraphRAG/Neo4j.AgentFramework.GraphRAG.csproj	Updates PackageId and InternalsVisibleTo to the renamed test assembly.
dotnet/src/Neo4j.AgentFramework.GraphRAG/IndexType.cs	Moves IndexType enum into GraphRAG namespace.
dotnet/samples/Neo4j.Samples/Program.cs	Updates sample import to GraphRAG namespace.
dotnet/samples/Neo4j.Samples/Neo4j.Samples.csproj	Updates sample project reference to renamed library.
dotnet/README.md	Updates install instructions, sample using, repo structure, and pack command to new package/project name.
dotnet/neo4j-provider.sln	Updates solution project entries to renamed library and test projects.
CLAUDE.md	Updates documented paths and commands to the renamed library/test project.
.github/workflows/release.yml	Updates dotnet pack path and NuGet package URL to Neo4j.AgentFramework.GraphRAG.

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