Examine source code of PromptClip

{
  "manifest_version": 2,
  "name": "PromptClip",
  "description": "Extract clean Markdown from web pages and inject into LLM input fields",
  "version": "1.1.0",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "promptclip@znarfm",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "scripting",
    "storage",
    "https://gemini.google.com/*",
    "https://chatgpt.com/*",
    "https://claude.ai/*"
  ],
  "commands": {
    "scrape-and-send": {
      "suggested_key": {
        "default": "Alt+Shift+C"
      },
      "description": "Scrape page and send to Gemini"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "PromptClip",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://gemini.google.com/*"
      ],
      "js": [
        "content-scripts/inject-gemini.js"
      ]
    }
  ]
}