Swagger UI was calling the host root (services.csbot.cz/contacts) instead of
services.csbot.cz/apps/idoklad/contacts. Emit servers=[{url: PathBase}] so the
same base that /docs runs under is prefixed to the API requests too.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>