Examine source code of Enhanced Anime1

{
  "manifest_version": 3,
  "name": "Enhanced Anime1",
  "description": "Browser extension that adds useful features for anime1.me site.",
  "version": "1.0.1",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "homepage_url": "https://github.com/iyume/enhanced-anime1",
  "permissions": [
    "storage",
    "identity"
  ],
  "host_permissions": [
    "https://bangumi-token-exchanger.iyumelive.workers.dev/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "inject.js",
        "assets/anime1-main.css",
        "icons/*.png"
      ],
      "matches": [
        "*://anime1.me/*"
      ]
    },
    {
      "resources": [
        "content-scripts/anime1.css"
      ],
      "matches": [
        "*://anime1.me/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "iyumelive@gmail.com"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://anime1.me/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/anime1.js"
      ]
    }
  ]
}