Update mcp server with latest google/go-github API

[stephenotalora]

Towards https://github.com/github/memex/issues/20995
Depends on #1357

Overview

This PR updates the MCP server to utilize the latest google/go-github API for interacting with GitHub projects, more specifically the ability to perform CRUD operations introduced in google/go-github@V77.

Details

• Most API integrations have been refactored to use the google/go-github library, replacing previous implementations.
• The migration was applied across all relevant endpoints and toolsets to ensure consistent usage of the new API client.

Outstanding Work

The only toolsets that have not yet been migrated to use google/go-github are:

• ❌ GetProjectItem and
• ❌ UpdateProjectItem.

This is due to notable differences in parameter handling between the google/go-github library and GitHub's RESTful API. Specifically, the way parameters must be passed for these endpoints does not fully align with the current library's abstractions, making a straightforward migration infeasible.

I am actively working to resolve these discrepancies and plan to make further adjustments within google/go-github to support these use cases.

Update:

I have opened google/go-github#3809 to resolve issues with GetProjectItem and UpdateProjectItem that came up during integration. The PR is ready for review and currently waiting on maintainers’ input.

Next Steps

• Complete functional parity for GetProjectItem and UpdateProjectItem by contributing necessary changes upstream.
• Monitor for any new breaking changes as GitHub's API evolves.

[Copilot]

Pull Request Overview

This pull request refactors GitHub Projects V2 API integration by migrating from manual HTTP request construction to using the go-github SDK's native client methods, and updates field ID handling to use int64 instead of strings.

• Introduces RequiredBigInt and OptionalBigIntArrayParam helper functions to handle large integer field/item IDs
• Migrates multiple project-related functions to use go-github SDK methods (ListProjectFields, GetProjectField, ListProjectItems, AddProjectItem, DeleteProjectItem)
• Updates field ID representation from []string to []int64 with comma-separated URL encoding

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 5 comments.

File	Description
pkg/github/server.go	Adds helper functions for handling large integers (RequiredBigInt, OptionalBigIntArrayParam) and conversion utilities for string-to-int64 conversion
pkg/github/projects.go	Migrates project API calls to use go-github SDK methods, updates data structures to use int64 for IDs, and removes obsolete custom types now replaced by SDK types
pkg/github/projects_test.go	Updates test assertions to check for comma-separated field parameters instead of array-style parameters

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[stephenotalora]

Standardized field parameters has changed from array notation (fields[]=123&fields[]=456) to comma-separated format (fields=123,456,789).

Why this change was needed:

• The comma-separated format is handled natively by the github.com/google/go-querystring library using the ,comma tag option
• Eliminates manual URL encoding complexity in our code
• Better aligns with Go's standard query parameter handling patterns
• Our tests in projects_test.go confirm the comma format works correctly: fieldParams == "123,456,789"

Technical details: The fieldSelectionOptions struct now uses url:"fields,omitempty,comma" which leverages go-querystring's built-in comma support rather than custom array parameter logic.

See ListProjectItemsOptions struct

// ListProjectItemsOptions specifies optional parameters when listing project items.
// Note: Pagination uses before/after cursor-style pagination similar to ListProjectsOptions.
// "Fields" can be used to restrict which field values are returned (by their numeric IDs).
type ListProjectItemsOptions struct {
	// Embed ListProjectsOptions to reuse pagination and query parameters.
	ListProjectsOptions
	// Fields restricts which field values are returned by numeric field IDs.
	Fields []int64 `url:"fields,omitempty,comma"`
}

I have also updated this internally to align the MCP server with the underlying google/go-github dependency since we're not quite ready to migrate GetProjectItem yet as per this PR's description.

[stephenotalora]

see this comment in relation to this change.

[kerobbi]

Lgtm!