Add GitHub Copilot accessor and GitHub API-based issue tracking integration

[Copilot]

This PR adds comprehensive GitHub Copilot integration to TreeAgent, enabling AI-assisted development with GitHub issue tracking capabilities.

New GitHub Copilot Accessor

Added GITHUB_COPILOT as a new model accessor type that interfaces with GitHub Copilot via the gh copilot agent-task create CLI command. The accessor creates agentic tasks that handle code generation and issue creation, returning the issue ID in the response.

from src.orchestrator import AgentOrchestrator
from src.dataModel.model import AccessorType

# Use GitHub Copilot for AI assistance - creates agentic tasks
orchestrator = AgentOrchestrator(default_accessor_type=AccessorType.GITHUB_COPILOT)
project = orchestrator.implement_project("Create a REST API server")
# The response will contain the GitHub issue ID that was created

The accessor:

• Uses gh copilot agent-task create to create GitHub agentic tasks
• Returns the issue ID created by the agentic task
• Includes automatic issue ID extraction from command output

GitHub Issue Tracking Tools (API-based)

Implemented a complete suite of GitHub issue management tools using the GitHub REST API:

• get_github_issue - Retrieve issue details
• create_github_issue - Create new issues with labels
• update_github_issue - Update existing issues
• comment_github_issue - Add comments to issues
• list_github_issues - List issues with filtering
• close_github_issue - Close issues

All tools use the GitHub REST API via the requests library for direct, authenticated operations. No CLI dependency required for tools.

from src.tools.github_tools import get_issue, create_issue, comment_on_issue

# Create an issue using GitHub API
issue = create_issue("owner/repo", "New Feature", "Description")

# Get issue details
details = get_issue("owner/repo", 123)

# Add a comment
comment_on_issue("owner/repo", 123, "Work in progress")

Key Benefits

• Unified Workflow: Combine AI-powered code generation with GitHub issue tracking
• Enhanced Collaboration: Tasks are tracked as GitHub issues for team visibility
• Flexible Integration: Accessor uses gh CLI, tools use REST API
• Robust Error Handling: Clear error messages for missing dependencies or tokens

Prerequisites

• For Accessor: GitHub CLI (gh) installed and authenticated, GitHub Copilot CLI extension installed (gh extension install github/gh-copilot)
• For Tools: GITHUB_TOKEN or GH_TOKEN environment variable set (create at https://github.com/settings/tokens)

The implementation includes comprehensive tests to ensure reliability and ease of use.

Original prompt

can you add a new accessor, githubCopilotAccessor under the model accessor?

I want to use the following type of command to trigger this

gh copilot agent-task create "Create a basic Flask app with one GET /hello endpoint returning JSON {'message': 'Hello'}" --follow

then in the tools add github as a tool that can track issues (get, update, comment, etc).

and allow for follow-ups on specific task(issue) ids

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[JPrier]

@copilot
This misses the mark I wanted something that only acted as an accessor but instead you created an entirely new CLI tool but I wanted was the accessor to use the existing CLI tools because there's currently no API to create github agentic tasks which would then handle the creation of issues and code and the response of the accessor would be the issue id that was created.

Then I wanted you to create a tool similar to what you did that would then utilize the GitHub API not the CLI. This with an abstract the use of that API, like getting the issue information, adding comments, Etc.

Please remove the custom c l i tool that you added and do the previously mentioned changes

[JPrier]

I don't know if I like adding random markdown files to the Root of the repo. Delete this file

[Copilot]

Done. Deleted the GITHUB_COPILOT_INTEGRATION.md file in commit 6bac6af.

[Copilot]

@copilot
This misses the mark I wanted something that only acted as an accessor but instead you created an entirely new CLI tool but I wanted was the accessor to use the existing CLI tools because th...

I've made the requested changes in commit 6bac6af:

1. Removed the custom CLI tool - Deleted src/cli/copilot_cli.py and its test file
2. Updated the accessor - Now uses gh copilot agent-task create to create GitHub agentic tasks. The response contains the issue ID that was created.
3. Rewrote GitHub tools to use GitHub API - All tools now use the GitHub REST API via the requests library instead of CLI. Requires GITHUB_TOKEN environment variable.

The accessor now properly calls gh copilot agent-task create "<description>" --follow and extracts the issue ID from the output to return in the response.