Examine source code of PromptMate

{
  "manifest_version": 3,
  "name": "PromptMate",
  "version": "1.0.0",
  "description": "Privacy-first AI toolkit: mask sensitive data before pasting, enhance prompts, and manage reusable prompt snippets.",
  "icons": {
    "16": "icons/mask-16.png",
    "32": "icons/mask-32.png",
    "48": "icons/mask-48.png",
    "128": "icons/mask-128.png"
  },
  "permissions": [
    "storage",
    "contextMenus"
  ],
  "host_permissions": [
    "<all_urls>",
    "https://generativelanguage.googleapis.com/"
  ],
  "action": {
    "default_title": "PromptMate",
    "default_icon": {
      "16": "icons/mask-16.png",
      "32": "icons/mask-32.png",
      "48": "icons/mask-48.png",
      "128": "icons/mask-128.png"
    },
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "contentmask.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "promptmate@example.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}