Examine source code of Bitcoin Mini

{
  "manifest_version": 3,
  "name": "Bitcoin Mini",
  "version": "1.0.3",
  "description": "Simple Bitcoin price, fees, and address tracking/risk analysis with secure vault functionality.",
  "author": "vabraham",
  "homepage_url": "https://github.com/vabraham/bitcoin-mini",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://api.coingecko.com/*",
    "https://mempool.space/*",
    "https://blockstream.info/*"
  ],
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "32": "icon32.png",
      "48": "icon48.png",
      "128": "icon128.png"
    },
    "default_title": "Bitcoin Mini - Price & Address Tracker"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "bitcoin-mini@extension.com",
      "strict_min_version": "109.0"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "css/*",
        "js/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}