DI Refactor: Azure.Mcp.Tools.Compute

[Copilot]

• Add IComputeService constructor injection to VmGetCommand and VmssGetCommand
• Update VmGetCommandTests and VmssGetCommandTests to pass mock service via constructor
• Add changelog entry with PR number (DI Refactor: Azure.Mcp.Tools.Compute #1914)

Original prompt

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This section details on the original issue you should resolve

<issue_title>DI Refactor: Azure.Mcp.Tools.Compute</issue_title>
<issue_description>## Summary

Refactor Azure.Mcp.Tools.Compute to use constructor dependency injection instead of resolving services via context.GetService<T>() in ExecuteAsync.

This is a sub-issue of #158.

Instructions

Follow the algorithm described in tools/di-refactor-plan.md with {ToolArea} = Compute.

An example PR is: #1815
</issue_description>

<agent_instructions>After creating the PR, please double check Step 5 was done. In particular, make sure New-ChangelogEntry.ps1 is executed so the CHANGELOG entry is correct.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes DI Refactor: Azure.Mcp.Tools.Compute #1846

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[Copilot]

Pull request overview

This PR refactors the Compute tool’s VM and VMSS “get” commands to use constructor dependency injection for IComputeService instead of resolving it from CommandContext during execution, improving testability and aligning with DI patterns used elsewhere in the repo.

Changes:

• Inject IComputeService via primary constructors in VmGetCommand and VmssGetCommand, removing context.GetService<IComputeService>() usage in ExecuteAsync.
• Update corresponding unit tests to pass a mocked IComputeService directly into command constructors.
• Add a server changelog entry documenting the Compute DI refactor.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tools/Azure.Mcp.Tools.Compute/src/Commands/Vm/VmGetCommand.cs	Switches VM get command to constructor-injected IComputeService and updates call sites.
tools/Azure.Mcp.Tools.Compute/src/Commands/Vmss/VmssGetCommand.cs	Switches VMSS get command to constructor-injected IComputeService and updates call sites.
tools/Azure.Mcp.Tools.Compute/tests/Azure.Mcp.Tools.Compute.UnitTests/Vm/VmGetCommandTests.cs	Updates unit tests to construct the command with a mocked compute service.
tools/Azure.Mcp.Tools.Compute/tests/Azure.Mcp.Tools.Compute.UnitTests/Vmss/VmssGetCommandTests.cs	Updates unit tests to construct the command with a mocked compute service.
servers/Azure.Mcp.Server/changelog-entries/1772567866615.yaml	Adds changelog entry for the Compute DI refactor/testability improvement.