Examine source code of pOT Enhancer

{
  "manifest_version": 2,
  "name": "pOT Enhancer",
  "short_name": "pot-enhancer",
  "version": "2.4.1",
  "description": "Enhances the browsing experience on forum.mods.de.",
  "homepage_url": "https://gitlab.com/five-fuenf/firefox-addon/pot-enhancer",
  "author": "FiveFuenf",
  "browser_specific_settings": {
    "gecko": {
      "id": "pot-enhancer@fivefuenf.addons.mozilla.org"
    }
  },
  "icons": {
    "16": "dist/resources/icons/mata-16.png",
    "48": "dist/resources/icons/mata-48.png",
    "128": "dist/resources/icons/mata-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://forum.mods.de/*",
        "https://forum.mods.de/*"
      ],
      "exclude_matches": [
        "http://my.mods.de/*",
        "https://my.mods.de/*",
        "http://forum.mods.de/bb/pm/*",
        "https://forum.mods.de/bb/pm/*"
      ],
      "css": [
        "dist/frontend/css/frontend.min.css"
      ],
      "js": [
        "dist/libraries/bootstrap/bootstrap.bundle.min.js",
        "dist/frontend/js/frontend.min.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "dist/frontend/*",
    "dist/libraries/*",
    "dist/resources/*"
  ],
  "options_ui": {
    "page": "dist/backend/index.html",
    "open_in_tab": true,
    "browser_style": true,
    "chrome_style": true
  },
  "permissions": [
    "storage",
    "clipboardRead",
    "downloads"
  ]
}