detail
Single PHP endpoint any system calls before building or editing any page or PHP file. Returns JSON: template (comment_map, head, top_bar, ai_slot, comment_slot, bottom_tabs), colors, fonts, rules (scoped by param). Token-gated, uses cai_time(), registered in registry.php. Scope param: all|universal|backend|frontend|general|php. Server [40] to build per T400.