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
 

docs/screens/boards/README.md

@@ -13,6 +13,6 @@ attribution lives in the caption and the [refs sidecars](../refs/README.md)).
 
 | Board | Caption |
 | --- | --- |
-| ![three-up board: elcapitan day](elcapitan-day-board.jpg) | El Capitan facade, day. Photo: [CC BY 2.0, woo, 2009](https://commons.wikimedia.org/wiki/File:El_Capitan_Theater_frontal_fachade-The_Masonic_Temple.jpg) via `refs/hollywood`. Concept: photo-anchored generation. Capture: current build. |
+| ![three-up board: elcapitan day](elcapitan-day-board.jpg) | El Capitan facade, day. Photo: [CC BY 2.0, woo, 2009](https://commons.wikimedia.org/wiki/File:El_Capitan_Theater_frontal_fachade-The_Masonic_Temple.jpg) via `refs/hollywood`. Concept: photo-anchored generation. Capture: current build with the ashlar limestone field (`limestone_ashlar`, anchored on the same photo). |
 | ![three-up board: elcapitan night](elcapitan-night-board.jpg) | El Capitan block, night. Photo: CC BY-SA 3.0 (reviewed; redistribution only, no derived assets) via `refs/hollywood`. Concept: photo-anchored night restage. Capture: current build. |
 | ![three-up board: jokeshop day](jokeshop-day-board.jpg) | Joke Shop frontage, day. Photo: public domain (2006) via `refs/joke-shop`. Concept: generated. Capture: current build. |

docs/screens/boards/elcapitan-day-board.json

@@ -1,6 +1,6 @@
 {
   "board": "elcapitan-day-board.jpg",
-  "caption": "El Capitan facade, day: 2009 CC BY photo | photo-anchored concept | current capture",
+  "caption": "El Capitan facade, day. Photo: CC BY 2.0 2009 via refs/hollywood. Concept: photo-anchored. Capture: ashlar limestone pass (limestone_ashlar, 768 px tile, ~167 px/m).",
   "photo": "docs/screens/refs/hollywood/el-capitan-facade-day-wikimedia-2009-10-27.jpg",
   "concept": "docs/screens/concepts/hollywood_boulevard/hollywood_boulevard_entrance_day-v2.png",
   "capture": "docs/screenshots/01-venue-overview.png"