connector.json: auth.deliver declares {as, format, path} so Skald
can write the Google authorized_user JSON without hardcoding paths.
connectors.json: gmail entry gains auth {type, provider, scopes}
for UI badge rendering without downloading the full manifest.
No changes to email, ssh, or tavily connectors.
Client-side page that captures the OAuth authorization code from
Google's redirect URL (?code=...) and displays it in a textarea
for copy-paste into Skald. Shows error details on failure.
Access at https://connectors.skaldagent.net/oauth/show.html
dguiducci