Examine source code of SailFish Browser Assistant

{
  "manifest_version": 3,
  "name": "SailFish Browser Assistant",
  "description": "Connects Firefox to the SailFish desktop Agent. Reuses your tabs and login sessions via Native Messaging (requires SailFish app).",
  "version": "1.2.2",
  "homepage_url": "https://www.sfterm.com/",
  "author": "SailFish",
  "browser_specific_settings": {
    "gecko": {
      "id": "sailfish-browser-bridge@yushen.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "shared/tabs-api.js",
      "background-firefox.js"
    ]
  },
  "action": {
    "default_title": "SailFish Browser Assistant",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "permissions": [
    "nativeMessaging",
    "tabs",
    "scripting",
    "activeTab",
    "alarms",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "safe-eval.js",
        "snapshot.js",
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ]
}