Examine source code of Visual Annotation Tool

{
  "manifest_version": 3,
  "name": "Visual Annotation Tool",
  "version": "1.0.0",
  "description": "Draw, highlight, annotate, and capture screenshots on any webpage. Perfect for feedback, bug reports, and visual collaboration.",
  "author": "Your Name",
  "browser_specific_settings": {
    "gecko": {
      "id": "visual-annotation@yourdomain.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png"
    },
    "default_title": "Visual Annotation Tool",
    "default_popup": "popup/popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/annotation.js"
      ],
      "css": [
        "content/annotation.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "activeTab",
    "storage",
    "scripting",
    "downloads"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "commands": {
    "toggle-annotation": {
      "suggested_key": {
        "default": "Ctrl+Shift+A",
        "mac": "Command+Shift+A"
      },
      "description": "Toggle annotation mode"
    },
    "capture-screenshot": {
      "suggested_key": {
        "default": "Ctrl+Shift+S",
        "mac": "Command+Shift+S"
      },
      "description": "Capture screenshot"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}