Examine source code of Copy-Safe Secrets

{
  "manifest_version": 2,
  "name": "Copy-Safe Secrets",
  "version": "1.0.0",
  "description": "Developer security tool that prevents accidental leakage of sensitive data like API keys, tokens, and credentials",
  "permissions": [
    "storage",
    "clipboardWrite",
    "clipboardRead",
    "activeTab",
    "notifications",
    "alarms",
    "contextMenus",
    "<all_urls>"
  ],
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Copy-Safe Secrets",
    "default_icon": {
      "16": "icon-16.png",
      "48": "icon-48.png",
      "128": "icon-128.png"
    }
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+E",
        "mac": "Command+Shift+E"
      },
      "description": "Open Copy-Safe Secrets popup"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "assets/*"
  ],
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6bc774be-0944-42ae-ba56-77fcabf10af9}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}