Adding comments sorting for list_issues

[MattBabbage]

Summary

This PR adds comment count support to the list_issues tool in the GitHub MCP Server, enabling users to view and sort issues by their comment activity.

Changes Made

Core Functionality

• Added comment count field: Modified IssueFragment struct to include a Comments.TotalCount field that fetches the total number of comments for each issue via GraphQL
• Enhanced issue data: Updated fragmentToIssue() function to include the comment count in the returned issue object
• New sorting option: Added "COMMENTS" as a sorting option for the orderBy parameter in the list_issues tool

Files Modified

• pkg/github/issues.go: Core implementation changes
• pkg/github/issues_test.go: Updated tests with comment count mock data and GraphQL query validation
• pkg/github/__toolsnaps__/list_issues.snap: Updated tool snapshot to reflect new enum option

Benefits

• Enhanced issue prioritization: Users can now sort issues by engagement level (comment count) to identify the most discussed or problematic issues
• Better context: Comment counts provide immediate insight into issue activity without needing to fetch comments separately
• Improved workflow: Enables data-driven approaches to issue triage and management

Usage Example

// Sort issues by comment count (most commented first)
list_issues({
  owner: "github",
  repo: "github-mcp-server", 
  orderBy: "COMMENTS",
  direction: "DESC"
})

Result

[Copilot]

Pull Request Overview

This PR adds support for sorting issues by comment count in the list_issues functionality. The implementation extends the GraphQL query to include comment counts and adds "COMMENTS" as a new ordering option.

• Adds comment count data to the GraphQL issue fragment and response mapping
• Introduces "COMMENTS" as a new sorting option for the orderBy parameter
• Updates test data to include comment counts for proper test coverage

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
pkg/github/issues.go	Adds comment count field to GraphQL fragment, updates issue mapping, and adds COMMENTS enum option
pkg/github/issues_test.go	Updates test data with comment counts and GraphQL query strings to match new implementation
pkg/github/toolsnaps/list_issues.snap	Updates tool snapshot to include COMMENTS in the orderBy enum options