Multi-Session Container Tabs Firefox

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manifest.json
{
  "manifest_version": 2,
  "name": "Multi-Session Container Tabs",
  "version": "1.0.0",
  "description": "Quickly open multiple Container Tabs loaded with the same URL. Each tab runs in its own isolated session with separate cookies and storage — useful for testing, multi-account workflows, and parallel browsing.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{b7e2c938-4f1a-4d6e-9c3b-a8f5d2e17604}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "contextualIdentities",
    "cookies",
    "tabs",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Multi-Session Container Tabs"
  },
  "icons": {
    "48": "icons/icon-48.svg",
    "96": "icons/icon-96.svg"
  }
}

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