The Beacon Composer

What it is

Per-composer dynamic OG image generator at /api/og/composers/[slug]. Each /composers/[slug] page (Mark CXIII Composer Wing) now renders its own dedicated share card on social: composer name + excerpt count + instrument coverage, royal-gold themed. Pure render from EXCERPTS aggregation, no DB. Sister to the rest of the Beacon family (CVII state + CIX strings + CXI category + CXII excerpt). The Beacon family expands to 5 surfaces and reuses the same visual language across all of them.