Examine source code of Passwall - Free Password Manager

{
  "manifest_version": 3,
  "name": "Passwall - Free Password Manager",
  "homepage_url": "https://passwall.io",
  "description": "Passwall is an open source password manager",
  "default_locale": "en",
  "version": "4.36.0",
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; style-src 'self' 'unsafe-inline'"
  },
  "permissions": [
    "tabs",
    "storage",
    "webRequest",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "background": {
    "scripts": [
      "service-worker-loader.js"
    ],
    "type": "module"
  },
  "options_ui": {
    "page": "src/options/index.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "js": [
        "js/content-script.js-loader.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "exclude_matches": [
        "*://www.google.com/recaptcha/*",
        "*://recaptcha.google.com/*",
        "*://www.recaptcha.net/*",
        "*://recaptcha.net/*",
        "*://challenges.cloudflare.com/*",
        "*://newassets.hcaptcha.com/*",
        "*://assets.hcaptcha.com/*"
      ],
      "css": [
        "css/content-script.css"
      ],
      "all_frames": true,
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "<all_urls>"
      ],
      "resources": [
        "src/popup/index.html",
        "src/login/index.html",
        "src/fido2/fido2-page-script.js",
        "icons/48.png",
        "icons/gray-48x48.png",
        "js/polyfills.CJ-_OQ8n.js",
        "js/storage.BpODKB5j.js",
        "js/helpers.Cz_j67F-.js",
        "js/platform-rules.DRjX-a8Y.js",
        "js/totp.excOMAMS.js",
        "js/fido2-types.D6qRV_Ow.js",
        "js/content-script.js.CesqfweV.js"
      ],
      "use_dynamic_url": false
    }
  ],
  "action": {
    "default_popup": "src/popup/index.html",
    "default_title": "Passwall - Free Password Manager",
    "default_icon": {
      "16": "icons/16.png",
      "19": "icons/19.png",
      "38": "icons/38.png",
      "48": "icons/48.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7e2297c3-edde-436c-ae8c-bd6c41f19264}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}