Add azmcp-keyvault-admin-settings-get for KeyVault.Administration

[JonathanCrd]

What does this PR do?

This PR adds the first tool for KeyVault Administration (Data Plane): azmcp-keyvault-admin-settings-get

GitHub issue number?

Resolves #308

Pre-merge Checklist

• Required for All PRs
  • Read contribution guidelines
  • PR title clearly describes the change
  • Commit history is clean with descriptive messages (cleanup guide)
  • Added comprehensive tests for new/modified functionality
  • Updated servers/Azure.Mcp.Server/CHANGELOG.md and/or servers/Fabric.Mcp.Server/CHANGELOG.md for product changes (features, bug fixes, UI/UX, updated dependencies)
• For MCP tool changes:
  • One tool per PR: This PR adds or modifies only one MCP tool for faster review cycles
  • Updated servers/Azure.Mcp.Server/README.md and/or servers/Fabric.Mcp.Server/README.md documentation
  • Updated command list in /docs/azmcp-commands.md and/or /docs/fabric-commands.md
  • For new or modified tool descriptions, ran ToolDescriptionEvaluator and obtained a score of 0.4 or more and a top 3 ranking for all related test prompts
• Extra steps for Azure MCP Server tool changes:
  • Updated test prompts in /docs/e2eTestPrompts.md
  • 👉 For Community (non-Microsoft team member) PRs:
    • Security review: Reviewed code for security vulnerabilities, malicious code, or suspicious activities before running tests (crypto mining, spam, data exfiltration, etc.)
    • Manual tests run: added comment /azp run mcp - pullrequest - live to run Live Test Pipeline

[Copilot]

Pull Request Overview

This PR adds the first tool for KeyVault Administration (Data Plane): azmcp-keyvault-admin-settings-get. The command retrieves Key Vault administration settings including purge protection state and soft delete retention days using the Azure.Security.KeyVault.Administration SDK.

• Implements the azmcp-keyvault-admin-settings-get command for retrieving Key Vault administration settings
• Extends KeyVaultService with new data plane administration functionality
• Adds comprehensive test coverage for the new admin settings command

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
AdminSettingsGetCommandTests.cs	Unit tests for the new admin settings get command
KeyVaultService.cs	Extended service with GetVaultSettings method using Administration SDK
IKeyVaultService.cs	Interface extension with new method and VaultSettings record
AdminSettingsGetOptions.cs	Options class for admin settings command
KeyVaultSetup.cs	Command registration for admin settings functionality
KeyVaultJsonContext.cs	JSON serialization context for VaultSettings
AdminSettingsGetCommand.cs	Implementation of the admin settings get command
Azure.Mcp.Tools.KeyVault.csproj	Added Azure.Security.KeyVault.Administration package reference
CHANGELOG.md	Documentation of the new feature
Directory.Packages.props	Package version management for the new dependency