memory: placement check results + north-buildings camera bug

MEMORY.md

@@ -288,3 +288,19 @@ Scope: facts and traps that cost time to establish. Planned work lives in [TODO.
   (2) ODbL review — recorded. The [D] Blosm-import (blockout cleaning) item stays
   deferred (tracked separately).
 - Branch: odbl-review-0.1.0 (docs + TODO closure only).
+
+## 2026-11-08 — placement release check; north-buildings camera was 9.5 km off
+
+- Release check 2 (placement vs references): rendered demo, probed DemoMap world
+  positions, compared to Geo references. Matches: road 24.3 m (ref crossings
+  20.9-25.9), sidewalk centreline offsets 12.5/13.2 m (ref 12.6/13.6), hero
+  frontage 26.0 m / setback ~13 m (ref 25.75/14.5), six south-frontage buildings
+  + TCL/Tussaud's in verified OSM positions.
+- **Bug found:** the `demo-north-buildings` camera sat at X -22800 (the buildings'
+  own X), aiming at its own position -> 85%-sky screenshot. Probed real geometry:
+  TCL bbox X -22889..-18442, Y -9431..-1802; Tussaud's X -27071..-22799,
+  Y -7586..-1888; hero at X -13336, Y +1307 (frontage 26 m). Camera now at
+  (X -22750, Y +1600) looking north; sky fraction 85% -> 41%.
+- Getting actor world bounds: spawn at loc(0,0,0) means static mesh bbox IS the
+  world footprint (FBX carries the geo offset). Probe by loading the level
+  explicitly (load_level) — a fresh commandlet starts on Untitled otherwise.