Add GitHub API client with OAuth token support

[Copilot]

Implements GitHub API integration supporting OAuth access tokens and Personal Access Tokens with Bearer authentication, following the existing CDP API pattern.

Implementation

Core Client (fetch-github-api.js)

• OAuth token support (gho_*) and PAT support (ghp_*, ghs_*, ghu_*, ghr_*)
• Bearer token authentication with standard GitHub API headers
• HTTP methods: GET, POST, PUT, PATCH, DELETE
• Rate limit tracking via response headers
• Environment variable and CLI argument configuration

Tooling

• Shell wrapper (fetch-github-api.sh)
• Demo script with 5 usage examples (demo-github-api.sh)
• Test suite with token validation and format verification (test-github-api.js)

Documentation

• Complete API reference (GITHUB_API_README.md)
• OAuth token format specification (OAUTH_TOKEN_EXAMPLE.md)
• Example JSON response (oauth-token-response-example.json)
• Updated main README and devtools README

OAuth Token Format

Handles the standard GitHub OAuth response:

{
  "access_token": "gho_16C7e42F292c6912E7710c838347Ae178B4a",
  "token_type": "bearer",
  "scope": "repo,gist"
}

Usage

export GITHUB_TOKEN="gho_16C7e42F292c6912E7710c838347Ae178B4a"
export REQUEST_PATH="/user"
node contrib/devtools/fetch-github-api.js

Or via CLI arguments:

node contrib/devtools/fetch-github-api.js \
  --token "gho_xxxxx" \
  --method GET \
  --path "/repos/bitcoin/bitcoin"

Files Added

• contrib/devtools/fetch-github-api.js (256 lines)
• contrib/devtools/fetch-github-api.sh (51 lines)
• contrib/devtools/demo-github-api.sh (98 lines)
• contrib/devtools/test-github-api.js (203 lines)
• contrib/devtools/GITHUB_API_README.md (271 lines)
• contrib/devtools/OAUTH_TOKEN_EXAMPLE.md (95 lines)
• contrib/devtools/oauth-token-response-example.json

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/graphql
  • Triggering command: /usr/bin/gh gh pr view --json title,body (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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[Yaketh (Kushmanmb)]

Kushmanmb.eth