Examine source code of Clipboard+

{
  "manifest_version": 3,
  "name": "Clipboard+",
  "version": "1.0.1",
  "description": "Smart clipboard history manager with instant search, smart text extraction (URLs, emails, phones, code), and direct note sharing.",
  "author": "Clipboard+",
  "browser_specific_settings": {
    "gecko": {
      "id": "clipboard-plus@extension",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "Clipboard+",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+V",
        "mac": "Command+Shift+V"
      },
      "description": "Open Clipboard+"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "all_frames": true,
      "run_at": "document_idle"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "inject.js"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "world": "MAIN"
    }
  ],
  "permissions": [
    "storage",
    "clipboardRead",
    "clipboardWrite",
    "activeTab",
    "contextMenus",
    "alarms"
  ]
}