Register sql.demo.altinity.cloud redirect URI on demo Google OAuth clients #270

The SQL Browser is now deployed at https://sql.demo.altinity.cloud/sql (Helm chart, PR #269). The login picker offers Google-SSO entries for antalya + github.demo, but SSO fails with redirect_uri_mismatch from this host.

Cause: the two demo Google OAuth clients register redirect URIs on their own hosts (antalya.demo / github.demo), not on sql.demo.altinity.cloud. The SPA's OAuth flow uses https://sql.demo.altinity.cloud/sql as the redirect_uri.

Fix (out of band, Google Cloud Console): add https://sql.demo.altinity.cloud/sql as an authorized redirect URI on both clients:

• antalya: 925653064731-tpj128lp5qm5vkqn4llgbl96udvt3lsf.apps.googleusercontent.com
• github.demo: 925653064731-vsep3e0vjq74q16svj5jshgvdlm6uptm.apps.googleusercontent.com

Until then: the demo:demo basic-credential picker entries work fine (verified live). Only the "Google SSO" entries are affected.

Deferred: requires Google Cloud Console access to the 925653064731 project, outside the repo. See the config block in deploy/config.json.example / helm/altinity-sql-browser/values.yaml.