SF Mono stack for code in answers

SF Pro system stack for body text; Press Start 2P back for UI chrome

base font 22px -> 24px

bump base font size 19px -> 22px

scope CRT scanlines to the title only

use stock Atom One Dark for code blocks

chat markdown polish: bold headings, multi-hue syntax theme

syntax highlighting for code blocks in finalized messages

AuctionRouter: cost-aware multi-agent LLM router with auction-based selection and verification-gated escalation