Examine source code of Leetcode Anki

{
  "manifest_version": 3,
  "name": "Leetcode Anki",
  "version": "1.0.0",
  "description": "Spaced-repetition practice for LeetCode — Anki, but the cards are problems.",
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "leetcode-anki@nicktriano.dev",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "lib/bg-context.js",
      "lib/sm2.js",
      "lib/store.js",
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "Leetcode Anki",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/icon16.png",
        "icons/icon32.png"
      ],
      "matches": [
        "https://leetcode.com/*"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "https://leetcode.com/*"
      ],
      "js": [
        "content/netwatch.js"
      ],
      "run_at": "document_start",
      "world": "MAIN"
    },
    {
      "matches": [
        "https://leetcode.com/*"
      ],
      "js": [
        "lib/sm2.js",
        "lib/select.js",
        "lib/store.js",
        "lib/selectors.js",
        "lib/lists.js",
        "lib/api.js",
        "content/problemset.js",
        "content/problem.js"
      ],
      "run_at": "document_idle"
    }
  ]
}