Use the photo-anchored ashlar limestone on the masonic facade

docs/hollywood-boulevard-map.md

@@ -73,6 +73,10 @@ not texture or geometry sources.
 - Local lights use linear attenuation (`omni_attenuation = 1.0`). Godot treats
   `0.0` as constant falloff, which previously turned the night facade into a
   flat yellow wall; the sconces now pool light instead.
+- The masonic facade field uses the `limestone_ashlar` pick: a seamless ashlar
+  tile generated reference-anchored on the 2009 facade photo (CC BY 2.0),
+  768 px over ~4.6 m of wall (~167 px/m), so the wall carries course joints and
+  per-block value variation instead of flat plaster.
 
 ## References