Examine source code of FocusFlow

{
  "manifest_version": 3,
  "name": "FocusFlow",
  "version": "0.5",
  "description": "Stay focused, get into flow state, finish your work.",
  "permissions": [
    "activeTab",
    "notifications",
    "scripting",
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "dist/background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/focus-48.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "focusflow@0xSingletOnly.github.io"
    }
  }
}