Examine source code of Seep - Language Learning

{
  "manifest_version": 3,
  "name": "Seep - Language Learning",
  "description": "Learn Chinese by browsing the Internet. Seep brings comprehensible input and immersion directly to you.",
  "version": "1.0.7",
  "browser_specific_settings": {
    "gecko": {
      "id": "seep@seeplearning.com",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "personallyIdentifyingInfo",
          "websiteActivity",
          "websiteContent"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "alarms",
    "scripting",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "seep.css"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "content/*.js",
        "content/util/*.js",
        "content/page/*.js",
        "content/prefs/*.js",
        "content/auth/*.js",
        "content/tutorial/*.js",
        "content/vocab/*.js",
        "content/segmentation/*.js",
        "content/render/*.js",
        "content/cross-inline/*.js",
        "content/settings-panel/*.js",
        "content/sidebar/*.js",
        "dictionary/*.js",
        "event-log/*.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_title": "Seep",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "host_permissions": [
    "<all_urls>"
  ]
}