Traefik auto-calculates router priority from rule string length. When
deployed with a domain longer than 23 chars (e.g. app.cameleer.io),
Host(`app.cameleer.io`) (25 chars) outranks PathPrefix(`/platform`)
(23 chars), causing ALL requests — including /platform/* — to route
to Logto instead of the SaaS app. This breaks login because the sign-in
UI loads without an OIDC interaction session.
Setting priority=1 makes Logto a true catch-all, matching the intent
documented in docker/CLAUDE.md.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>