feat: add terrain-scatter and fence-kit showcase pieces (#155)

* feat: add terrain-scatter showcase piece

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

* feat: add fence-kit showcase piece

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

---------

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

Author: TMHSDigital

.cursor-plugin/plugin.json

@@ -144,6 +144,8 @@
     "showcase/campfire",
     "showcase/market-stall",
     "showcase/street-lantern",
-    "showcase/treasure-chest"
+    "showcase/treasure-chest",
+    "showcase/terrain-scatter",
+    "showcase/fence-kit"
   ]
 }

AGENTS.md

@@ -21,7 +21,7 @@ classifies it as a `cursor-plugin`. This is content the AI loads when the user
 asks Blender questions or works on Blender add-ons in Cursor or Claude Code.
 
 The content base is 16 skills, 9 rules, 3 templates, 27 snippets, 59
-examples, and 7 showcase pieces (counts are CI-enforced against README.md
+examples, and 9 showcase pieces (counts are CI-enforced against README.md
 and the manifest). The full inventory tables and per-item purposes live in
 `CLAUDE.md`. Example anatomy and authoring rules: copy `examples/bmesh-gear/`;
 showcase conventions: `showcase/README.md`. The render look is specified

CLAUDE.md

@@ -22,7 +22,7 @@ rules/<rule-name>.mdc          - Anti-pattern rules, 9 total
 templates/<template-name>/     - Starter projects, 3 total
 snippets/<snippet-name>.py     - Standalone code patterns, 27 total
 examples/<name>/               - Runnable smoke-gated examples, 59 total (+ gallery.json)
-showcase/<name>/               - Budget-conformance props, 7 pieces (sibling of examples/; see showcase/README.md)
+showcase/<name>/               - Budget-conformance props, 9 pieces (sibling of examples/; see showcase/README.md)
 scripts/build_gallery.py       - Regenerates docs/gallery/ from examples/gallery.json + showcase/gallery.json
 scripts/site/                  - Vendored landing-page build (Jinja2)
 docs/gallery/                  - Committed generated gallery pages + hero renders

README.md

@@ -18,7 +18,7 @@
 </p>
 
 <p align="center">
-  <strong>16 skills</strong> &nbsp;&bull;&nbsp; <strong>9 rules</strong> &nbsp;&bull;&nbsp; <strong>3 templates</strong> &nbsp;&bull;&nbsp; <strong>27 snippets</strong> &nbsp;&bull;&nbsp; <strong>59 examples</strong> &nbsp;&bull;&nbsp; <strong>7 showcase pieces</strong>
+  <strong>16 skills</strong> &nbsp;&bull;&nbsp; <strong>9 rules</strong> &nbsp;&bull;&nbsp; <strong>3 templates</strong> &nbsp;&bull;&nbsp; <strong>27 snippets</strong> &nbsp;&bull;&nbsp; <strong>59 examples</strong> &nbsp;&bull;&nbsp; <strong>9 showcase pieces</strong>
 </p>
 
 <p align="center">
@@ -37,7 +37,7 @@
 
 ## Overview
 
-This repository ships **16 skills, 9 rules, 3 templates, 27 snippets, 59 examples, and 7 showcase pieces** for Blender Python development targeting Blender 5.2 LTS (current stable) with Blender 4.5 LTS fallback support. Blender 5.1 is prior stable.
+This repository ships **16 skills, 9 rules, 3 templates, 27 snippets, 59 examples, and 9 showcase pieces** for Blender Python development targeting Blender 5.2 LTS (current stable) with Blender 4.5 LTS fallback support. Blender 5.1 is prior stable.
 
 The content is consumed by AI coding agents (Cursor, Claude Code, any MCP-capable client) when working on Blender add-ons, geometry nodes scripts, batch pipelines, or animation tooling. There is no build step. Edit the markdown and Python files directly.
 
@@ -82,6 +82,8 @@ Budget-conformance props. Not examples. Conventions: [`showcase/README.md`](show
 <a href="showcase/market-stall/"><img src="showcase/market-stall/preview.webp" alt="Market stall: a timber frame with post feet, slatted counter, rafters, and a striped awning on a dark studio floor, warm wedge on the back wall" /></a>
 <a href="showcase/street-lantern/"><img src="showcase/street-lantern/preview.webp" alt="Street lantern: an iron post with brass collars, a braced arm, and a muntined amber cage on a dark studio floor" /></a>
 <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>
 
 [`shipping-crate`](showcase/shipping-crate/) — procedural crate through UVs, bake, LOD, collider, and Unity glTF, asserting recomputed budgets. Falsifier `--skip-decimate` exits 9.
 
@@ -97,6 +99,10 @@ Budget-conformance props. Not examples. Conventions: [`showcase/README.md`](show
 
 [`treasure-chest`](showcase/treasure-chest/) — procedural slatted chest with iron bands, corner brackets, and an open lid through the same pipeline. Falsifier `--skip-decimate` exits 9.
 
+[`terrain-scatter`](showcase/terrain-scatter/) — Geometry Nodes hill tile with bevelled masonry scatter through the same pipeline. Falsifier `--skip-decimate` exits 9.
+
+[`fence-kit`](showcase/fence-kit/) — procedural post-and-rail fence section through the same pipeline. Falsifier `--skip-decimate` exits 9.
+
 ## Examples
 
 Runnable, smoke-gated demos live in [`examples/`](examples/) — each is executed headless on

ROADMAP.md

@@ -111,11 +111,11 @@ Not committed; target list for the next content version. (v0.3.0 shipped the smo
 - ~~Wooden barrel showcase~~ **SHIPPED** as `showcase/wooden-barrel/` — bulged staves, four iron hoops, lid heads; `--skip-decimate` exits 9 on the LOD1 ratio band
 - ~~Campfire showcase~~ **SHIPPED** as `showcase/campfire/` — two-course fire ring, log tripod; `--skip-decimate` exits 9 on the LOD1 ratio band
 - ~~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
+- ~~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
 - 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
-- Small modular kit showcase on recognizable geometry (`modular-kit-snap` contract)
+- ~~Small modular kit showcase on recognizable geometry (`modular-kit-snap` contract)~~ **SHIPPED** as `showcase/fence-kit/` — tiling post-and-rail section (AABB X is the tile width; does not re-witness the snap contract); `--skip-decimate` exits 9 on the LOD1 ratio band
 
 - ~~Custom ID-property delete witness~~ **SHIPPED** as `examples/cross-version-property-delete/` — IDs built via `bpy.data.objects.new` (not `active_object`); `property_unset` is TypeError and leaves the key; `del` removes it on 4.5 LTS and 5.x
 - ~~USD export evaluation_mode witness~~ **SHIPPED** as `examples/usd-export-evaluation-mode/` — probed `wm.usd_export` on CI Linux portables 5.2.1 (`9e2066aef7ef`) and 4.5.13 (`daeeeca98fb0`); TESSELLATE+VIEWPORT 26/24, TESSELLATE+RENDER 98/96; BEST_MATCH writes the 8-vert catmullClark cage so the mode is silent

docs/gallery/assets/fence-kit-hero.webp

@@ -264,7 +264,7 @@ <h1>campfire</h1>
 <p><strong>Composes</strong> skills <code>mesh-editing-and-bmesh</code>, <code>bake-high-to-low</code>, <code>depsgraph-and-evaluated-data</code>, <code>engine-export-presets</code>, and snippets <code>bake_normal_high_to_low.py</code>, <code>setup_bake_target_image.py</code>, <code>lod_chain.py</code> / <code>decimate_to_budget.py</code>, <code>convex_hull_collider.py</code>, <code>export_preset_unity.py</code> (helpers copied, not imported as a package).</p>
 <h2>Budgets</h2>
 <p>Declared as named constants; every gate <strong>recomputes</strong> from the mesh, materials, UVs, evaluated LOD, collider, or export file.</p>
-<p>| Axis | Declared | Measured (4.5.11 / 5.1.2 / 5.2.1) | | --- | --- | --- | | Base triangles | 3500–3750 | 3616 / 3616 / 3616 | | LOD1 ratio | 0.32–0.62 of base | 0.5000 / 0.5000 / 0.5000 | | LOD2 ratio | 0.10–0.35 of base | 0.2196 / 0.2196 / 0.2196 | | Materials | exactly 3 distinct, ≥24 wood faces, ≥8 ash faces | 3 slots, 100 wood, 48 ash | | UVs | in <code>0..1</code>, AABB overlap ≤ 1e-5 | in range, overlap 0 | | Outer AABB | (0.789, 0.789, 0.410) m ± 0.01 | (0.7891, 0.7891, 0.4099), zmin 0 | | Collider tris | ≤ 320 | 254 | | Export | written, size &gt; 0 | 273604 / 273604 / 273596 bytes |</p>
+<p>| Axis | Declared | Measured (4.5.11 / 5.1.2 / 5.2.1) | | --- | --- | --- | | Base triangles | 3500–3750 | 3616 / 3616 / 3616 | | LOD1 ratio | 0.32–0.62 of base | 0.5000 / 0.5000 / 0.5000 | | LOD2 ratio | 0.10–0.35 of base | 0.2196 / 0.2196 / 0.2196 | | Materials | exactly 3 distinct, ≥24 wood faces, ≥8 ash faces | 3 slots, 100 wood, 48 ash | | UVs | in <code>0..1</code>, AABB overlap ≤ 1e-5 | in range, overlap 0 | | Outer AABB | (0.789, 0.789, 0.410) m ± 0.01 | (0.7891, 0.7891, 0.4094), zmin 0 | | Collider tris | ≤ 320 | 254 | | Export | written, size &gt; 0 | 273604 / 273604 / 273596 bytes |</p>
 <p>DECIMATE COLLAPSE triangle counts are <strong>not</strong> guaranteed identical across series — the gate is a ratio band, not an exact count. This mesh happened to match on 4.5.11 / 5.1.2 / 5.2.1. Bake pixels are stochastic; the gate is <code>has_data</code> plus operator <code>FINISHED</code>, not byte-identity. Construction uses no RNG. glTF byte size differs by a few bytes across series.</p>
 <p><code>--skip-decimate</code> skips the LOD DECIMATE stage so LOD1 ratio is 1.0 and exit 9 fires. That is the named budget the falsifier violates.</p>
 <h2>Run</h2>