m3ultra 8b7ca9aae4 Lane A (CityGen): deterministic town generator, registry, names, 2D map, self-check ...

Layer-1 CityPlan generator per CITY_SPEC schema v1 — pure data, no THREE, all randomness
through core/prng, deterministic + JSON-serializable + <1ms.

- web/js/citygen/plan.js: generatePlan(citySeed) → CityPlan (spine, cross-streets, market
  square + dept anchor, arcade, warehouse fringe, residential collar w/ corner milkbars,
  laneways) + chunkIndex (Amanatides–Woo edge supercover) + corner overlap-resolution pass.
- web/js/core/registry.js: SHOP_TYPES (all 9) + district weights + enums (shared vocabulary).
- web/js/citygen/names.js + wordlists.js: seeded 90s-AU shop/town names, 50+ patterns.
- web/js/citygen/index.js: canonical barrel entry (adopts Lane F's integration shim).
- web/map.html: standalone Canvas-2D plan debugger (pan/zoom/hover, layers, export JSON).
- web/js/citygen/selfcheck.js: node acceptance harness — determinism, golden fingerprint,
  facing, within- AND cross-block no-overlap, chunk+edge coverage, finiteness, assets. ALL GREEN
  (1271/1271) over 6 seeds. web/package.json ({"type":"module"}) lets node run it.
- docs/shots/laneA/: 5 seeds screenshotted, each reads as a town.

Fixes from an adversarial multi-agent review (15 confirmed defects): market facades faced the
wrong way; cross-block corner overlaps; chunkIndex skipped chunks incl. the origin/spine;
stall frontEdge z-band; doubled-possessive names; unparseable map road colour; +others.

CITY_SPEC amendment (treaty, same commit): shop-types table aligned to the registry lanes
import; documented lot.ry/frontEdge, block.kind/district-id, and web/package.json.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-07-14 12:06:41 +10:00

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