Examine source code of HackTogether

{
  "manifest_version": 2,
  "name": "HackTogether",
  "description": "Leave your one annotation per day on HN-featured articles.",
  "version": "0.0.1",
  "icons": {
    "16": "icon/16.png",
    "48": "icon/48.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "scripting",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "hacktogether@hacktogether.news",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personallyIdentifyingInfo",
          "browsingActivity",
          "websiteContent",
          "websiteActivity"
        ],
        "optional": []
      }
    }
  },
  "web_accessible_resources": [
    "fonts/*",
    "content-scripts/*.css",
    "content-scripts/content.css"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "SurfTogether",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}