Examine source code of Plain Text Paste

{
  "manifest_version": 3,
  "name": "Plain Text Paste",
  "version": "0.1.0",
  "description": "Pastes clipboard content as plain text across websites in Firefox.",
  "browser_specific_settings": {
    "gecko": {
      "id": "plain-text-paste@example.local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "128.0"
    }
  },
  "permissions": [
    "clipboardRead"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/content.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "match_about_blank": true
    }
  ],
  "commands": {
    "paste-plain-text": {
      "description": "Paste plain text at current cursor"
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "icons": {
    "48": "icons/icon-48.svg",
    "96": "icons/icon-96.svg"
  }
}