- README: rewrite Difficulty section (per-network LEVELS ∝ block time, WOW=5min,
multi-level descent, corrected casino size); document game_event + depth in the
Socket.IO table.
- NEW docs/BALANCE_SIM.md: the block-timed edge math (exponential deadline), the
headless sim over the real engine, what it proved (size self-cancels, fast monster
fails on slow chains), and the per-network NETWORK_TUNING model.
- NEW docs/MULTI_LEVEL.md: descent mechanic, vault-only treasure, per-level
provably-fair seeding, config, file map, open polish.
- NEW docs/RENDER_PACKS.md: modes-vs-packs, the RK.fx layer, iso/tiled/zoom/cat.
- docs/ARCHITECTURE.md: mark the block-time-difficulty gotcha RESOLVED; add render
kit + balance/pacing sections and cross-links.
- docs/TODO.md: 2026-07 done/pending section.