fix: rebuild watchtower as a timber lookout with a shake roof (#157)

Replace the cone-in-a-railing-box with posts through a plank deck, lower-bay X-braces, a hatch ladder, and well-style coursed eaves.

Signed-off-by: TMHSDigital <154358121+TMHSDigital@users.noreply.github.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

Author: TMHSDigital

README.md

@@ -84,7 +84,7 @@ Budget-conformance props. Not examples. Conventions: [`showcase/README.md`](show
 <a href="showcase/treasure-chest/"><img src="showcase/treasure-chest/preview.webp" alt="Treasure chest: a slatted wooden chest with iron bands, corner brackets, and an open lid on a dark studio floor" /></a>
 <a href="showcase/terrain-scatter/"><img src="showcase/terrain-scatter/preview.webp" alt="Terrain scatter: a Geometry Nodes dirt hill tile with bevelled masonry rocks on a dark studio floor" /></a>
 <a href="showcase/fence-kit/"><img src="showcase/fence-kit/preview.webp" alt="Fence kit: a timber post-and-rail section with pyramidal caps, iron shoes and straps on a dark studio floor" /></a>
-<a href="showcase/watchtower/"><img src="showcase/watchtower/preview.webp" alt="Watchtower: a timber lookout with X-braces, ladder, plank platform, and pyramidal roof on a dark studio floor" /></a>
+<a href="showcase/watchtower/"><img src="showcase/watchtower/preview.webp" alt="Watchtower: a timber lookout with X-braces, hatch ladder, plank platform, and a coursed shake roof on a dark studio floor" /></a>
 <a href="showcase/cart/"><img src="showcase/cart/preview.webp" alt="Cart: a two-wheel wooden cart with spoked wheels, slatted bed, and shafts on a dark studio floor" /></a>
 
 [`shipping-crate`](showcase/shipping-crate/) — procedural crate through UVs, bake, LOD, collider, and Unity glTF, asserting recomputed budgets. Falsifier `--skip-decimate` exits 9.
@@ -105,7 +105,7 @@ Budget-conformance props. Not examples. Conventions: [`showcase/README.md`](show
 
 [`fence-kit`](showcase/fence-kit/) — procedural post-and-rail fence section through the same pipeline. Falsifier `--skip-decimate` exits 9.
 
-[`watchtower`](showcase/watchtower/) — procedural timber lookout with X-braces, ladder, platform, and pyramidal roof through the same pipeline. Falsifier `--skip-decimate` exits 9.
+[`watchtower`](showcase/watchtower/) — procedural timber lookout with X-braces, hatch ladder, platform, and coursed shake roof through the same pipeline. Falsifier `--skip-decimate` exits 9.
 
 [`cart`](showcase/cart/) — procedural two-wheel wooden cart with spoked wheels, slatted bed, and shafts through the same pipeline. Falsifier `--skip-decimate` exits 9.
 

ROADMAP.md

@@ -113,7 +113,7 @@ Not committed; target list for the next content version. (v0.3.0 shipped the smo
 - ~~Market stall showcase~~ **SHIPPED** as `showcase/market-stall/` — timber frame, slatted counter, striped awning; `--skip-decimate` exits 9 on the LOD1 ratio band
 - ~~Procedural terrain or landscape showcase using Geometry Nodes scatter~~ **SHIPPED** as `showcase/terrain-scatter/` — GN sine-hill Mesh Grid, Index-jittered Instance-on-Points scatter replaced with bevelled masonry; `--skip-decimate` exits 9 on the LOD1 ratio band
 - ~~Hero prop with a more complex silhouette (lantern or treasure chest) as a second showcase piece~~ **SHIPPED** as `showcase/street-lantern/` and `showcase/treasure-chest/` — hanging iron lantern with muntined amber cage; slatted chest with iron bands and an open lid; `--skip-decimate` exits 9 on the LOD1 ratio band
-- ~~Timber watchtower showcase~~ **SHIPPED** as `showcase/watchtower/` — corner posts, X-braces, plank platform, ladder, pyramidal roof; `--skip-decimate` exits 9 on the LOD1 ratio band
+- ~~Timber watchtower showcase~~ **SHIPPED** as `showcase/watchtower/` — corner posts through a plank platform, lower-bay X-braces, hatch ladder, coursed shake roof; `--skip-decimate` exits 9 on the LOD1 ratio band
 - ~~Two-wheel wooden cart showcase~~ **SHIPPED** as `showcase/cart/` — slatted bed, shafts, spoked wheels, iron hubs and axle; `--skip-decimate` exits 9 on the LOD1 ratio band
 - Wrought-iron park bench (slatted seat, scrolled legs) as a game-prop showcase piece
 - Wooden wheelbarrow (staved tray, single wheel, handles) as a game-prop showcase piece

docs/gallery/assets/watchtower-hero.webp

@@ -991,7 +991,7 @@ <h2><a href="fence-kit/">fence-kit</a></h2>
         <div class="card-body">
           <h2><a href="watchtower/">watchtower</a></h2>
           <p class="teaches">A procedural timber watchtower through UVs, bake, LOD, collider, and Unity glTF, asserting recomputed budgets rather than an API contract.</p>
-          <p class="witnesses"><span class="tag">witnesses</span> Recomputed: 4656 tris, two materials with 60 metal faces, UVs in 0..1 with zero AABB overlap, outer AABB 0.910×0.927×1.822 m, LOD ratios in band, convex collider 64 tris, non-empty glTF. --skip-decimate exits 9 on the LOD1 ratio budget.</p>
+          <p class="witnesses"><span class="tag">witnesses</span> Recomputed: 5220 tris, three materials with 84 metal and 126 roof faces, UVs in 0..1 with zero AABB overlap, outer AABB 1.434×1.434×1.982 m, LOD ratios in band, convex collider 56 tris, non-empty glTF. --skip-decimate exits 9 on the LOD1 ratio budget.</p>
           <a class="card-link" href="watchtower/">View example <span aria-hidden="true">&rarr;</span></a>
         </div>
       </article>