UserScript Pro: Custom JS & CSS Firefox

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manifest.json
{
  "manifest_version": 3,
  "name": "UserScript Pro: Custom JS & CSS",
  "version": "1.2.2",
  "description": "Inject custom JavaScript and CSS into any website.",
  "browser_specific_settings": {
    "gecko": {
      "id": "userscript-pro@boutique-dev.tools",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "scripting",
    "tabs",
    "activeTab"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "inject_bridge.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup/index.html"
  },
  "options_ui": {
    "page": "editor/index.html",
    "open_in_tab": true
  },
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  }
}

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