Examine source code of PokeLegends Vote Center

{
  "manifest_version": 3,
  "name": "PokeLegends Vote Center",
  "version": "2.4.0",
  "description": "A persistent Firefox sidebar queue for the PokeLegends voting sites.",
  "permissions": [
    "storage",
    "tabs",
    "clipboardWrite"
  ],
  "host_permissions": [
    "https://minecraft-server-list.com/*",
    "https://*.minecraft-server-list.com/*",
    "https://minecraftservers.org/*",
    "https://*.minecraftservers.org/*",
    "https://minerank.com/*",
    "https://*.minerank.com/*",
    "https://minecraft-mp.com/*",
    "https://*.minecraft-mp.com/*",
    "https://topminecraftservers.org/*",
    "https://*.topminecraftservers.org/*",
    "https://top-mc-servers.net/*",
    "https://*.top-mc-servers.net/*",
    "https://minecraft.buzz/*",
    "https://*.minecraft.buzz/*"
  ],
  "background": {
    "scripts": [
      "sites.js",
      "background.js"
    ]
  },
  "action": {
    "default_title": "Open PokeLegends Vote Center",
    "default_area": "navbar",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "sidebar_action": {
    "default_title": "PokeLegends Vote Center",
    "default_panel": "panel.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "open_at_install": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "pokelegends-vote-center@pokelegends.local",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://minecraft-server-list.com/*",
        "https://*.minecraft-server-list.com/*",
        "https://minecraftservers.org/*",
        "https://*.minecraftservers.org/*",
        "https://minerank.com/*",
        "https://*.minerank.com/*",
        "https://minecraft-mp.com/*",
        "https://*.minecraft-mp.com/*",
        "https://topminecraftservers.org/*",
        "https://*.topminecraftservers.org/*",
        "https://top-mc-servers.net/*",
        "https://*.top-mc-servers.net/*",
        "https://minecraft.buzz/*",
        "https://*.minecraft.buzz/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ]
}