Examine source code of Kimchi Reader

{
  "manifest_version": 3,
  "name": "Kimchi Reader",
  "version": "0.21.2",
  "description": "Korean popup dictionary for YouTube, Netflix & any website",
  "homepage_url": "https://kimchi-reader.app/",
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "contextMenus",
    "unlimitedStorage"
  ],
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "64": "icon-64.png",
    "128": "icon-128.png"
  },
  "action": {
    "default_icon": "./icon-128.png",
    "default_popup": "./popup/index.html"
  },
  "background": {
    "scripts": [
      "./background/index.js"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "static/dict/action_verb/*.json.gz",
        "static/dict/descriptive_verb/*.json.gz",
        "static/dict/auxiliary_action_verb/*.json.gz",
        "static/dict/auxiliary_descriptive_verb/*.json.gz",
        "static/dict/noun/*.json.gz",
        "static/dict/pronoun/*.json.gz",
        "static/dict/determiner/*.json.gz",
        "static/dict/numeral/*.json.gz",
        "static/dict/adverb/*.json.gz",
        "static/dict/interjection/*.json.gz",
        "static/dict/bound_noun/*.json.gz",
        "static/dict/pre_affix/*.json.gz",
        "static/dict/post_affix/*.json.gz",
        "static/dict/pair/*.json.gz",
        "static/dict/idiom_defs.json",
        "static/locales/common/*.json",
        "static/locales/*.json",
        "static/data/*.json",
        "inject/netflix_seek.js",
        "inject/netflix_override.js",
        "inject/youtube_fullscreen.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.netflix.com/*",
        "https://www.youtube.com/*",
        "https://www.viki.com/*",
        "https://m.youtube.com/*"
      ],
      "js": [
        "contentScripts/index.global.js"
      ],
      "css": [
        "contentScripts/style.css"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://kimchi-reader.app/*"
      ],
      "js": [
        "webappBridge/index.global.js"
      ],
      "run_at": "document_start"
    }
  ],
  "commands": {
    "parse": {
      "description": "Parse the current page"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "extension@kimchi-reader.app"
    }
  }
}