Examine source code of Focus Companion

{
  "manifest_version": 3,
  "name": "Focus Companion",
  "version": "1.5.0",
  "description": "A calm productivity companion that tracks your web activity and offers gentle insights.",
  "browser_specific_settings": {
    "gecko": {
      "id": "focuscompanion@focuscompanion.app",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "websiteActivity",
          "personallyIdentifyingInfo",
          "technicalAndInteraction"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_title": "Focus Companion",
    "default_popup": "browser/index.html#/popup",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    }
  },
  "options_page": "browser/index.html#/options",
  "permissions": [
    "tabs",
    "storage",
    "idle",
    "alarms",
    "notifications"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "service_worker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://focuscompanion.app/*",
        "https://www.focuscompanion.app/*"
      ],
      "js": [
        "auth_bridge.js"
      ],
      "run_at": "document_idle"
    }
  ]
}