Add tool for getting a single commit (includes stats, files)

[jshorty]

While we offer tools to list repo commits today, from an LLM perspective this relies heavily on the accuracy of the commit message to glean any meaning from it. A natural followup may be to dig deeper into a specific commit.

The existing "get commit" endpoint offered by our API allows for more detailed information, including the relative size of the change as well as the actual file changes.

Some similar data is available via getPullRequestFiles but this allows more granular/targeted querying.

[Copilot]

Pull Request Overview

This PR adds a new tool for retrieving detailed information about a single GitHub commit, including associated stats and file changes.

• Registers the new "get_commit" tool in the server configuration.
• Implements the tool in pkg/github/repositories.go with support for pagination.
• Adds corresponding tests in pkg/github/repositories_test.go and updates the README.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
pkg/github/server.go	Added tool registration for get_commit
pkg/github/repositories_test.go	Added tests to verify proper behavior of the new get_commit tool
pkg/github/repositories.go	Implemented the get_commit tool with error handling and pagination
README.md	Updated documentation to include the new get_commit tool

Comments suppressed due to low confidence (1)

pkg/github/repositories.go:18

• [nitpick] The translation key 'TOOL_GET_COMMITS_DESCRIPTION' uses the plural 'commits' while the tool is named 'get_commit'. Consider updating the key for consistency.

mcp.WithDescription(t("TOOL_GET_COMMITS_DESCRIPTION", "Get details for a commit from a GitHub repository")),

[juruen]

LGMT! 🚀

Thank you!