Examine source code of Link Priority Extractor

{
  "manifest_version": 3,
  "name": "Link Priority Extractor",
  "version": "0.1.0",
  "description": "Extract links from current tab or all tabs with per-page priority: magnet > thunder > ed2k, then copy merged result to clipboard | 从当前/全部标签页提取链接：每页优先 magnet > 迅雷(thunder) > ed2k，并合并复制到剪贴板",
  "browser_specific_settings": {
    "gecko": {
      "id": "link-priority-extractor@firewell.local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "109.0"
    }
  },
  "permissions": [
    "activeTab",
    "tabs",
    "clipboardWrite"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_title": "Extract Links",
    "default_popup": "popup.html",
    "default_icon": "icons/icon.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  }
}