MCP server updates using google/go-github APIs

[stephenotalora]

• Closes: https://github.com/github/memex/issues/20994
• Closes: https://github.com/github/memex/issues/20995

This PR builds upon and directly depends on the updates introduced in #1407, which upgraded the project’s dependency to google/go-github@V79. The upgrade to V79 resolves fundamental issues related to data unmarshalling from Github’s ProjectsV2 RESTful API, ensuring structured and accurate decoding of API responses and laying the groundwork for the API updates in this PR.

• Based on: Update mcp server with latest google/go-github API #1358

Context

With the go-github@V79 upgrade, enables support for new and updated ProjectsV2 API endpoints, JSON unmarshalling across different resource types, and compatibility with recent API endpoints.

Key Changes

• Updates to API Layer: Aligns MCP server tools for Projects to match the latest ProjectsV2 RESTful API contracts.
• Fixes Data Unmarshalling: Leverages improvements in the upgraded dependency to process incoming ProjectsV2 data correctly.

Dependency

Note: This PR must be merged after #1407 as it requires the fixes and new capabilities introduced in the go-github@V79 upgrade.

Testing

• No immediate test updates are required for the commits in this PR.
• The existing tests are robust because they focus on the same data contracts that is provided by this upgrade and for this reason there are no updates to existing test suites.
• Manual validation performed against the current ProjectsV2 REST API to confirm fidelity of data transformations and absence of regressions.
• For more details on manual testing please follow along.

Click to expand local testing

Org testing:

User testing:

[Copilot]

Pull Request Overview

This PR updates the GitHub MCP Server to use native google/go-github v79 API methods for ProjectsV2 operations, replacing custom HTTP request handling with proper SDK integration. This change depends on the go-github v79 upgrade introduced in PR #1407, which fixed critical data unmarshalling issues.

Key changes:

• Replaces manual HTTP requests and custom request building with go-github SDK API methods
• Removes custom type definitions in favor of using types from the go-github library
• Updates item_id parameter handling to use RequiredBigInt for safer int64 conversion

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[SamMorrowDrums]

Seems much cleaner

[SamMorrowDrums]

Merge conflicts prevent me from actually merging (rebase of dependency upgrade PR onto main is likely cause), and probably can be resolved by rebasing this PR against main.

[stephenotalora]

conflicts addressed ✅