Examine source code of GitHub Mutuals

{
  "manifest_version": 2,
  "name": "GitHub Mutuals",
  "description": "Shows positive mutual-follow indicators on your own GitHub Following tab.",
  "version": "0.1.0",
  "permissions": [
    "storage",
    "https://api.github.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "github-mutuals@local.invalid",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*"
      ],
      "all_frames": false,
      "run_at": "document_idle",
      "css": [
        "content-scripts/github.css"
      ],
      "js": [
        "content-scripts/github.js"
      ]
    }
  ],
  "browser_action": {
    "default_title": "Open GitHub Mutuals diagnostics"
  }
}