Examine source code of Paginated Reader

{
  "manifest_version": 3,
  "name": "Paginated Reader",
  "version": "0.7.5",
  "description": "A distraction-free reading mode with page-turn navigation instead of scrolling. Built for e-ink displays.",
  "browser_specific_settings": {
    "gecko": {
      "id": "paginated-reader@local.extension",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "optional_host_permissions": [
    "<all_urls>",
    "http://*/*",
    "https://*/*"
  ],
  "action": {
    "default_title": "Toggle Paginated Reader (Alt+Shift+R)",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png"
    }
  },
  "background": {
    "scripts": [
      "src/settings-schema.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "lib/Readability.js",
        "lib/Readability-readerable.js",
        "lib/purify.min.js",
        "src/settings-schema.js",
        "src/content-sanitizer.js",
        "src/paginator.js",
        "src/reader.js",
        "src/auto-detect.js",
        "src/bootstrap.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "commands": {
    "toggle-reader": {
      "suggested_key": {
        "default": "Alt+Shift+R"
      },
      "description": "Toggle paginated reader view"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "web_accessible_resources": [
    {
      "resources": [
        "src/reader.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  }
}