kit-engage OAuth

Authorize Google OAuth for YouTube posting, then save the returned refresh token into the configured env file.

Redirect URI: https://engage.kitpro.us/oauth/google/callback

Env file: /opt/kit-engage/.env

Client ID fingerprint: sha256:10a732d99b2f len=72

Existing refresh token: present

Start Google OAuth

After completion, run kit-engage doctor auth.