Examine source code of FurAffinity Memoranda

{
  "manifest_version": 3,
  "name": "FurAffinity Memoranda",
  "version": "1.0.0",
  "description": "Add private memos to FA Userpages. Caution: Notes stored only as long as extension is installed.",
  "developer": {
    "name": "Flam",
    "url": "https://flam.dogpixels.net/"
  },
  "icons": {
    "32": "img/32.png",
    "48": "img/48.png",
    "64": "img/64.png",
    "96": "img/96.png",
    "128": "img/128.png",
    "256": "img/256.png"
  },
  "permissions": [
    "tabs",
    "storage",
    "unlimitedStorage"
  ],
  "host_permissions": [
    "*://*.furaffinity.net/user/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@dogpixels.furaffinity-memoranda",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "options_ui": {
    "page": "html/options.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.furaffinity.net/user/*"
      ],
      "js": [
        "js/common.content+options.js",
        "js/userpage.content.js"
      ],
      "css": [
        "css/common.css"
      ]
    }
  ]
}