Examine source code of Regex Tester Panel

{
  "manifest_version": 3,
  "name": "Regex Tester Panel",
  "short_name": "Regex Tester",
  "version": "1.0.0",
  "description": "Opens an interactive regex testing workspace in the browser side panel",
  "permissions": [
    "sidePanel",
    "storage",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background/service-worker.js"
    ]
  },
  "action": {
    "default_title": "Regex Tester Panel",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "side_panel": {
    "default_path": "panel/panel.html"
  },
  "options_page": "options/options.html",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "regex_tester_panel@forgex.aevorn",
      "strict_min_version": "109.0"
    }
  }
}