Examine source code of BibBot

{
  "manifest_version": 3,
  "name": "BibBot",
  "version": "0.40.8",
  "description": "Vereinfacht die Suche nach Artikeln in der Bibliothek",
  "icons": {
    "48": "icons/bibbot-48.png",
    "96": "icons/bibbot-96.png",
    "128": "icons/bibbot-128.png",
    "256": "icons/bibbot-256.png",
    "512": "icons/bibbot-512.png",
    "1024": "icons/bibbot-1024.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "https://*.genios.de/*"
  ],
  "optional_host_permissions": [
    "https://www.munzinger.de/*",
    "https://www.voebb.de/*",
    "https://www.wiso-net.de/*",
    "https://*.stbhannover.idm.oclc.org/*",
    "https://*.han.landesbibliothek.at/*",
    "https://*.stadtbibliothek.leipzig.de/*",
    "https://*.ezp-lhd.itk-rheinland.de/*",
    "https://*.ub-proxy.fernuni-hagen.de/*",
    "https://*.ezproxy.stadt-koeln.de/*",
    "https://*.stb-aachen.idm.oclc.org/*",
    "https://login.slub-dresden.de/*",
    "https://www-wiso-net-de.wwwdb.dbod.de/*",
    "https://*.bsb-muenchen.de/*",
    "https://go.openathens.net/*",
    "https://katalog.dortmund.de/*",
    "https://advance-lexis-com.eu1.proxy.openathens.net/*",
    "https://*.bonn.idm.oclc.org/*",
    "https://online-service2.nuernberg.de/*",
    "https://*.webopac.wuppertal.de:1443/*",
    "https://ssl.muenchen.de/*"
  ],
  "background": {
    "service_worker": "build/background.js",
    "scripts": [
      "build/background.js"
    ],
    "persistent": false,
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.spiegel.de/*",
        "https://www.zeit.de/*",
        "https://www.wiwo.de/*",
        "https://www.welt.de/*",
        "https://www.tagesspiegel.de/*",
        "https://www.sueddeutsche.de/*",
        "https://sz-magazin.sueddeutsche.de/*",
        "https://www.handelsblatt.com/*",
        "https://www.berliner-zeitung.de/*",
        "https://www.morgenpost.de/*",
        "https://www.nordkurier.de/*",
        "https://www.abendblatt.de/*",
        "https://www.moz.de/*",
        "https://www.noz.de/*",
        "https://www.waz.de/*",
        "https://www.heise.de/*",
        "https://www.maz-online.de/*",
        "https://www.lr-online.de/*",
        "https://www.nachrichten.at/*",
        "https://ga.de/*",
        "https://www.ksta.de/*",
        "https://www.rundschau-online.de/*",
        "https://rp-online.de/*",
        "https://www.tagesanzeiger.ch/*",
        "https://www.falter.at/*",
        "https://www.stuttgarter-zeitung.de/*",
        "https://www.stuttgarter-nachrichten.de/*",
        "https://www.ostsee-zeitung.de/*",
        "https://www.stimme.de/*",
        "https://kurier.at/*",
        "https://freizeit.at/*",
        "https://www.diepresse.com/*",
        "https://www.sn.at/*",
        "https://www.kleinezeitung.at/*",
        "https://www.vn.at/*",
        "https://www.thueringer-allgemeine.de/*",
        "https://www.mopo.de/*",
        "https://www.saechsische.de/*",
        "https://www.freiepresse.de/*",
        "https://www.haz.de/*",
        "https://www.lvz.de/*",
        "https://www.dnn.de/*",
        "https://www.swp.de/*",
        "https://www.ruhrnachrichten.de/*",
        "https://www.businessinsider.de/*",
        "https://www.badische-zeitung.de/*",
        "https://www.stern.de/*",
        "https://www.mittelbayerische.de/*",
        "https://www.tagblatt.de/*",
        "https://www.mz.de/*",
        "https://www.capital.de/*",
        "https://www.iz.de/*",
        "https://www.shz.de/*",
        "https://www.aerztezeitung.de/*",
        "https://www.geo.de/*",
        "https://www.nzz.ch/*",
        "https://www.manager-magazin.de/*",
        "https://www.nwzonline.de/*",
        "https://www.saarbruecker-zeitung.de/*",
        "https://www.idowa.de/*",
        "https://www.aachener-zeitung.de/*",
        "https://www.nn.de/*"
      ],
      "js": [
        "build/content.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "content_security_policy": {
    "extension_pages": "default-src 'self'"
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "options/options.html"
  },
  "action": {
    "default_icon": {
      "19": "icons/bibbot-mono-19.png",
      "38": "icons/bibbot-mono-38.png",
      "48": "icons/bibbot-mono-48.png",
      "96": "icons/bibbot-mono-96.png",
      "128": "icons/bibbot-mono-128.png",
      "256": "icons/bibbot-mono-256.png",
      "512": "icons/bibbot-mono-512.png",
      "1024": "icons/bibbot-mono-1024.png"
    },
    "default_popup": "popup/popup.html",
    "default_title": "BibBot"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "voebbot@stefanwehrmeyer.com",
      "strict_min_version": "101.0"
    }
  }
}