Pre-warm Modal LLM at app startup + document cold-start behavior in README

Default LLM-call tracing to ON — writes to ./traces unless ORACLES_TRACE_DISABLE=1

Trace: log both model_requested and model_returned for Sharing-is-Caring badge

Add visual-mode dropdown on step 0 — live toggle between lean and full

Relax LLM output validation: lower word floor, +1 retry, salvage missing tactic

Memoize hot HTML helpers and lazy-load image module sprites for faster transitions

Initial commit — The Apprentice for Build Small