Examine source code of Session Buddy

{
  "action": {
    "default_icon": {
      "19": "assets/logo-19.png",
      "38": "assets/logo-38.png"
    }
  },
  "background": {
    "scripts": [
      "background.bundle.js"
    ]
  },
  "commands": {
    "clear-item-selections": {
      "description": "Clear tab/link selections"
    },
    "save-session": {
      "description": "Save open tabs"
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "content.bundle.js"
      ],
      "matches": [
        "*://*/*"
      ],
      "run_at": "document_end"
    }
  ],
  "default_locale": "en",
  "description": "The best tab management tool, save sessions, take snapshots, and quickly restore it.",
  "icons": {
    "16": "assets/logo-16.png",
    "32": "assets/logo-32.png",
    "48": "assets/logo-48.png",
    "128": "assets/logo-128.png"
  },
  "incognito": "spanning",
  "manifest_version": 3,
  "minimum_chrome_version": "109",
  "name": "Session Buddy",
  "host_permissions": [
    "*://*/*"
  ],
  "optional_host_permissions": [
    "file:///*"
  ],
  "permissions": [
    "tabs",
    "unlimitedStorage",
    "storage",
    "alarms",
    "declarativeNetRequest"
  ],
  "version": "4.0.4",
  "browser_specific_settings": {
    "gecko": {
      "id": "{9156f4b4-1ff8-3b8f-4cff-03b1a8a1813c}",
      "strict_min_version": "109.0"
    }
  }
}