Examine source code of Open Access Helper

{
  "manifest_version": 2,
  "default_locale": "en",
  "name": "Open Access Helper Web",
  "description": "Helps you find Open Access copies of paywalled scientific articles, by utilizing Unpaywall and other services",
  "version": "2026.6.1",
  "icons": {
    "48": "images/icon-48.png",
    "64": "images/icon-64.png",
    "96": "images/icon-96.png",
    "128": "images/icon-128.png",
    "256": "images/icon-256.png",
    "512": "images/icon-512.png"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "css": [
        "css/content.css"
      ],
      "js": [
        "js/content.js"
      ],
      "matches": [
        "*://*/*",
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "html/popup.html",
    "default_icon": {
      "19": "images/oahelper_black_19.png",
      "38": "images/oahelper_black_38.png"
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "contextMenus",
    "http://*/*",
    "https://*/*",
    "*://*/*",
    "https://www.oahelper.org/backend/institutes/"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'; img-src 'self' data:",
  "options_ui": {
    "chrome_style": true,
    "open_in_tab": true,
    "page": "html/options.html"
  },
  "web_accessible_resources": [
    "css/*.css",
    "js/*.js",
    "html/*.html",
    "images/*.png",
    "images/*.gif",
    "images/*.jpg",
    "images/*.svg"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "info@oahelper.org",
      "strict_min_version": "78.0"
    }
  }
}