diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index 666f3d9d..d94c9354 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -10,13 +10,13 @@
     "description": "CAD, robotics, fabrication, and local review plugins."
   },
   "description": "CAD, robotics, fabrication, and local review plugins.",
-  "version": "0.4.20",
+  "version": "0.4.21",
   "plugins": [
     {
       "name": "cad",
       "source": "./",
       "description": "CAD, robotics, fabrication, and local review skills.",
-      "version": "0.4.20",
+      "version": "0.4.21",
       "author": {
         "name": "earthtojake"
       },
diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
index 11ec8271..663a78e4 100644
--- a/.claude-plugin/plugin.json
+++ b/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "cad",
-  "version": "0.4.20",
+  "version": "0.4.21",
   "description": "CAD, robotics, fabrication, and local review skills.",
   "author": {
     "name": "earthtojake",
diff --git a/.codex-plugin/plugin.json b/.codex-plugin/plugin.json
index 8ae5c905..6ed1f199 100644
--- a/.codex-plugin/plugin.json
+++ b/.codex-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "cad",
-  "version": "0.4.20",
+  "version": "0.4.21",
   "description": "CAD, robotics, fabrication, and local review skills packaged for agent plugin installs.",
   "author": {
     "name": "earthtojake",
diff --git a/VERSION b/VERSION
index 2b2a18d2..4add8a3f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.4.20
+0.4.21
diff --git a/docs/package-lock.json b/docs/package-lock.json
index a382935d..d4591afd 100644
--- a/docs/package-lock.json
+++ b/docs/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "cad-skills-docs",
-  "version": "0.4.20",
+  "version": "0.4.21",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "cad-skills-docs",
-      "version": "0.4.20",
+      "version": "0.4.21",
       "license": "MIT",
       "dependencies": {
         "@vercel/analytics": "^2.0.1",
diff --git a/docs/package.json b/docs/package.json
index 4a7f42d5..709598be 100644
--- a/docs/package.json
+++ b/docs/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cad-skills-docs",
-  "version": "0.4.20",
+  "version": "0.4.21",
   "license": "MIT",
   "private": true,
   "scripts": {
diff --git a/packages/cadgen/pyproject.toml b/packages/cadgen/pyproject.toml
index 5fdc87cb..9b095139 100644
--- a/packages/cadgen/pyproject.toml
+++ b/packages/cadgen/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "cadgen"
-version = "0.4.20"
+version = "0.4.21"
 description = "STEP-first CAD artifact generation runtime: build123d STEP/GLB/topology generation, validation, and inspection for CAD agent skills."
 readme = "README.md"
 license = "MIT"
diff --git a/packages/cadjs/package-lock.json b/packages/cadjs/package-lock.json
index a96f42f5..ad173958 100644
--- a/packages/cadjs/package-lock.json
+++ b/packages/cadjs/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "cadjs",
-  "version": "0.4.20",
+  "version": "0.4.21",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "cadjs",
-      "version": "0.4.20",
+      "version": "0.4.21",
       "dependencies": {
         "gifenc": "^1.0.3",
         "implicitjs": "file:../implicitjs",
@@ -16,7 +16,7 @@
       }
     },
     "../implicitjs": {
-      "version": "0.4.20",
+      "version": "0.4.21",
       "dependencies": {
         "gifenc": "^1.0.3",
         "playwright": "^1.52.0",
diff --git a/packages/cadjs/package.json b/packages/cadjs/package.json
index e6ea02db..f8d1c12e 100644
--- a/packages/cadjs/package.json
+++ b/packages/cadjs/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cadjs",
-  "version": "0.4.20",
+  "version": "0.4.21",
   "private": true,
   "type": "module",
   "description": "Reusable CAD render/viewer runtime for docs, CAD Viewer, and generated snapshot browser assets.",
diff --git a/packages/implicitjs/package-lock.json b/packages/implicitjs/package-lock.json
index 8235abdf..2895fc30 100644
--- a/packages/implicitjs/package-lock.json
+++ b/packages/implicitjs/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "implicitjs",
-  "version": "0.4.20",
+  "version": "0.4.21",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "implicitjs",
-      "version": "0.4.20",
+      "version": "0.4.21",
       "dependencies": {
         "gifenc": "^1.0.3",
         "playwright": "^1.52.0",
diff --git a/packages/implicitjs/package.json b/packages/implicitjs/package.json
index 150e86de..5b574e18 100644
--- a/packages/implicitjs/package.json
+++ b/packages/implicitjs/package.json
@@ -1,6 +1,6 @@
 {
   "name": "implicitjs",
-  "version": "0.4.20",
+  "version": "0.4.21",
   "type": "module",
   "description": "Standalone browser-native implicit CAD runtime, renderer, mesh sampler, and exporters.",
   "exports": {
diff --git a/viewer/moveit2_server/pyproject.toml b/viewer/moveit2_server/pyproject.toml
index 355f1a47..b943901f 100644
--- a/viewer/moveit2_server/pyproject.toml
+++ b/viewer/moveit2_server/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "moveit2_server"
-version = "0.4.20"
+version = "0.4.21"
 description = "Local MoveIt2 websocket server for SRDF solve and planning requests."
 requires-python = ">=3.12"
 dependencies = [
diff --git a/viewer/package-lock.json b/viewer/package-lock.json
index acdba00b..c605335a 100644
--- a/viewer/package-lock.json
+++ b/viewer/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "cad-viewer",
-  "version": "0.4.20",
+  "version": "0.4.21",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "cad-viewer",
-      "version": "0.4.20",
+      "version": "0.4.21",
       "dependencies": {
         "cadjs": "file:./packages/cadjs",
         "class-variance-authority": "^0.7.1",
@@ -4392,7 +4392,7 @@
       "license": "ISC"
     },
     "packages/cadjs": {
-      "version": "0.4.20",
+      "version": "0.4.21",
       "dependencies": {
         "gifenc": "^1.0.3",
         "implicitjs": "file:../implicitjs",
@@ -4402,7 +4402,7 @@
       }
     },
     "packages/implicitjs": {
-      "version": "0.4.20",
+      "version": "0.4.21",
       "dependencies": {
         "gifenc": "^1.0.3",
         "playwright": "^1.52.0",
diff --git a/viewer/package.json b/viewer/package.json
index d918d2d4..42a183cd 100644
--- a/viewer/package.json
+++ b/viewer/package.json
@@ -2,7 +2,7 @@
   "name": "cad-viewer",
   "private": true,
   "type": "module",
-  "version": "0.4.20",
+  "version": "0.4.21",
   "scripts": {
     "dev": "vite dev",
     "start": "node scripts/start-viewer.mjs",