Examine source code of Capian

{
  "manifest_version": 2,
  "name": "Capian",
  "description": "Capian helps you review apps and sites quickly. Perfect for heuristic evaluations, UX/UI reviews, copywriting/marketing/SEO audits.",
  "version": "2.0.4",
  "permissions": [
    "<all_urls>",
    "activeTab",
    "tabs",
    "scripting",
    "storage",
    "*://*.capian.co/",
    "*://*.capian.app/",
    "*://*.capian.test/",
    "https://api.rollbar.com/"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false,
    "type": "module"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_title": "Capian"
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "web_accessible_resources": [
    "lib/*",
    "config.js",
    "content-main.js",
    "capian-editor.min.js",
    "onboarding/*",
    "widget/*",
    "main.html",
    "capture.html",
    "rollbar.background.js",
    "rollbar.capture-config.js",
    "rollbar.config.js",
    "rollbar.content.js",
    "rollbar.min.js",
    "browser.js"
  ],
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y",
        "mac": "MacCtrl+Shift+Y"
      },
      "description": "Capture screen"
    }
  },
  "content_security_policy": "script-src 'self' https://cdn.rollbar.com; object-src 'self' https://cdn.rollbar.com;",
  "browser_specific_settings": {
    "gecko": {
      "id": "{1643ba4d-626c-4b76-9aa8-2271f9e005bb}"
    }
  }
}