feat: add color-attribute-wheel example

.cursor-plugin/plugin.json

@@ -60,6 +60,7 @@
   ],
   "examples": [
     "examples/bmesh-gear",
+    "examples/color-attribute-wheel",
     "examples/compositor-glare",
     "examples/curve-bevel-arc",
     "examples/damped-track-aim",

.github/workflows/blender-smoke.yml

@@ -253,3 +253,14 @@ jobs:
           # aligns toward the core (dot ≥ 0.998). Exits non-zero on failure.
           xvfb-run -a "$BLENDER" --background \
             --python examples/damped-track-aim/damped_track_aim.py --
+
+      - name: Shipped example - color attribute wheel (color_attributes CORNER domain)
+        run: |
+          set -euo pipefail
+          # Frame-independent check only (no render): an HSV wheel disc colored via
+          # mesh.color_attributes.new() on the CORNER domain; asserts the attribute
+          # is sized to loop count (not vertex count), is active_color, and probe
+          # loops match the closed-form HSV for their vertex. Exits non-zero on
+          # failure.
+          xvfb-run -a "$BLENDER" --background \
+            --python examples/color-attribute-wheel/color_attribute_wheel.py --

AGENTS.md

@@ -27,7 +27,7 @@ The content base (counts are CI-enforced against README.md and the manifest):
 - 2 templates: `extension-addon-template` for Extensions Platform add-ons,
   and `headless-batch-script-template` for unattended batch jobs.
 - 17 snippets covering canonical patterns.
-- 14 examples under `examples/<name>/`: runnable scripts that assert a real
+- 15 examples under `examples/<name>/`: runnable scripts that assert a real
   API contract with deterministic checks, exit non-zero on failure, and
   optionally render a still via `--output`. Each is executed headless on
   Blender 4.5 LTS and 5.1 by `blender-smoke.yml`; its render ships in the
@@ -41,7 +41,7 @@ Blender-Developer-Tools/
   rules/<rule-name>.mdc          # 6 rule files
   templates/<template-name>/     # 2 starter templates
   snippets/<snippet-name>.py     # 17 standalone Python snippets
-  examples/<name>/               # 14 runnable smoke-gated examples (+ gallery.json)
+  examples/<name>/               # 15 runnable smoke-gated examples (+ gallery.json)
   scripts/build_gallery.py       # generates docs/gallery/ (stdlib only)
   scripts/site/                  # vendored landing-page build (build_site.py + template)
   docs/gallery/                  # committed generated gallery pages + hero assets

CLAUDE.md

@@ -19,7 +19,7 @@ skills/<skill-name>/SKILL.md   - AI workflow definitions, 12 total
 rules/<rule-name>.mdc          - Anti-pattern rules, 6 total
 templates/<template-name>/     - Starter projects, 2 total
 snippets/<snippet-name>.py     - Standalone code patterns, 17 total
-examples/<name>/               - Runnable smoke-gated examples, 14 total (+ gallery.json)
+examples/<name>/               - Runnable smoke-gated examples, 15 total (+ gallery.json)
 scripts/build_gallery.py       - Regenerates docs/gallery/ from gallery.json (stdlib only)
 scripts/site/                  - Vendored landing-page build (Jinja2)
 docs/gallery/                  - Committed generated gallery pages + hero renders
@@ -80,11 +80,11 @@ v0.1.0: canonical object creation and deletion, depsgraph evaluated mesh, bmesh
 
 v0.2.0: Principled BSDF material, driver-with-custom-function via `driver_namespace`, application handler registration, shader node group with cross-version `interface` API, `foreach_get` bulk vertex read, version-branch skeleton, and USD export with `evaluation_mode='RENDER'`.
 
-## Examples (14)
+## Examples (15)
 
 Runnable scripts at `examples/<name>/`, each asserting a real API contract with
 deterministic checks (exit non-zero on failure) and optionally rendering a still via
-`--output`. All fourteen run headless on Blender 4.5 LTS and 5.1 in `blender-smoke.yml`;
+`--output`. All fifteen run headless on Blender 4.5 LTS and 5.1 in `blender-smoke.yml`;
 their renders ship in the site gallery at `docs/gallery/`. `examples/gallery.json` is the
 gallery's source of truth. When authoring a new one, copy the anatomy of
 `examples/bmesh-gear/` (script structure, README shape, dark-studio render recipe) and

README.md

@@ -17,14 +17,14 @@
 </p>
 
 <p align="center">
-  <strong>12 skills</strong> &nbsp;&bull;&nbsp; <strong>6 rules</strong> &nbsp;&bull;&nbsp; <strong>2 templates</strong> &nbsp;&bull;&nbsp; <strong>17 snippets</strong> &nbsp;&bull;&nbsp; <strong>14 examples</strong>
+  <strong>12 skills</strong> &nbsp;&bull;&nbsp; <strong>6 rules</strong> &nbsp;&bull;&nbsp; <strong>2 templates</strong> &nbsp;&bull;&nbsp; <strong>17 snippets</strong> &nbsp;&bull;&nbsp; <strong>15 examples</strong>
 </p>
 
 ---
 
 ## Overview
 
-This repository ships **12 skills, 6 rules, 2 templates, 17 snippets, and 14 runnable examples** for Blender Python development targeting Blender 5.1 (current stable) with Blender 4.5 LTS fallback support.
+This repository ships **12 skills, 6 rules, 2 templates, 17 snippets, and 15 runnable examples** for Blender Python development targeting Blender 5.1 (current stable) with Blender 4.5 LTS fallback support.
 
 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.
 
@@ -248,6 +248,22 @@ Aim constraints via the data API — `Object.constraints.new('DAMPED_TRACK')` wi
 Asserts twelve unmuted Damped Track constraints and evaluated local `+Z` alignment
 toward the core (dot ≥ 0.998).
 
+</td>
+</tr>
+<tr>
+<td width="46%" valign="middle">
+<a href="examples/color-attribute-wheel/"><img src="examples/color-attribute-wheel/preview.webp" alt="Color attribute wheel: an HSV color wheel disc with a white center fading into a vivid rainbow rim, resting on a dark studio floor" /></a>
+</td>
+<td valign="middle">
+
+### [color-attribute-wheel](examples/color-attribute-wheel/)
+
+The modern color-attributes API — `mesh.color_attributes.new()` on the `CORNER`
+domain, not the deprecated `vertex_colors` alias, filled by expanding per-vertex
+HSV across face corners with `foreach_get`/`foreach_set`. Asserts the attribute
+is sized to loop count (not vertex count), is `active_color`, and that the
+shader `Attribute` node is actually linked to Base Color.
+
 </td>
 </tr>
 </table>