Stronger Theme Fallbacks And Series Event Images

Templates and theme settings now have stronger fallbacks. Series API responses can carry event relationship images, making public themes more resilient across listing pages, related-event sections, and programme pages.

Fallbacks that work

Missing optional settings should not break a page. This update ensures they do not. When a configuration value is absent, a sensible fallback is applied automatically rather than rendering a broken or empty section.

Related event imagery

Event images from series and related events are now available in API responses, so themes can display imagery for related-event sections without additional lookups.