Examine source code of CONTEXT FOCUS

{
  "manifest_version": 2,
  "name": "ContextFocus",
  "version": "1.0.0",
  "description": "Blocks distractions automatically when you open a work tab. No timers. No setup. No buttons.",
  "browser_specific_settings": {
    "gecko": {
      "id": "contextfocus@shivampersonal22",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "alarms",
    "webNavigation",
    "activeTab",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "ContextFocus"
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "blocked.html",
    "blocked.js",
    "icons/icon16.png",
    "icons/icon48.png",
    "icons/icon128.png"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_security_policy": "script-src 'self'; object-src 'self'"
}