Examine source code of PR Emoji

{
  "manifest_version": 2,
  "name": "PR Emoji",
  "version": "1.3.0",
  "description": "Suggest emojis for your GitHub PR titles using AI",
  "permissions": [
    "storage",
    "activeTab",
    "https://openrouter.ai/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "pr-emoji@timfennis.com",
      "strict_min_version": "143.0",
      "data_collection_permissions": {
        "required": [
          "websiteActivity"
        ],
        "optional": []
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*/compare/*",
        "https://github.com/*/pull/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "commands": {
    "suggest-emoji": {
      "suggested_key": {
        "default": "Ctrl+Shift+E",
        "mac": "Command+Shift+E"
      },
      "description": "Suggest an emoji for the PR title"
    }
  },
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  }
}