website: M3 redesign with rich industry SVGs, showcase overhaul, one-click demo

Complete website redesign for sceneview.github.io:
- 20+ custom SVG illustrations: industry use cases, device previews, showcase cards
- M3 Expressive CSS with dark mode, responsive breakpoints, tonal palette
- Homepage: hero banner, industry grid, code tabs, device showcase, samples gallery
- New pages: try.md (demo access), showcase.md, use-cases.md updates
- Codelab guides linked from homepage
- One-click demo: try-demo bash script + build-apks.yml workflow
- Research docs for 3D model expansion

https://claude.ai/code/session_01SegkZGp11CSyChYzTavuTi

Author: claude

.github/workflows/build-apks.yml

@@ -2,13 +2,55 @@ name: Build sample APKs
 
 on:
   push:
+    branches: [main]
     tags:
       - 'v[0-9]+.[0-9]+.[0-9]+'
+  pull_request:
+    branches: [main]
   workflow_dispatch:
 
 jobs:
+  build-demo:
+    name: Build demo APK (quick — always available)
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 17
+          cache: gradle
+
+      - run: chmod +x ./gradlew
+
+      - name: Build SceneView Demo APK
+        run: ./gradlew :samples:sceneview-demo:assembleDebug --console=plain
+
+      - name: Collect demo APK
+        run: |
+          mkdir -p dist
+          apk=$(find samples/sceneview-demo/build/outputs/apk/debug -name "*.apk" | head -1)
+          cp "$apk" dist/sceneview-demo.apk
+
+      - name: Upload demo APK
+        uses: actions/upload-artifact@v4
+        with:
+          name: sceneview-demo-apk
+          path: dist/sceneview-demo.apk
+          retention-days: 90
+
+      - name: Attach demo APK to GitHub Release
+        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
+        uses: softprops/action-gh-release@v2
+        with:
+          files: dist/sceneview-demo.apk
+
   build-samples:
-    name: Build sample APKs
+    name: Build all sample APKs
     runs-on: ubuntu-latest
     permissions:
       contents: write
@@ -28,6 +70,7 @@ jobs:
       - name: Build all sample APKs
         run: |
           ./gradlew \
+            :samples:sceneview-demo:assembleDebug \
             :samples:model-viewer:assembleDebug \
             :samples:camera-manipulator:assembleDebug \
             :samples:gltf-camera:assembleDebug \
@@ -47,9 +90,9 @@ jobs:
       - name: Collect APKs
         run: |
           mkdir -p dist
-          for sample in model-viewer camera-manipulator gltf-camera autopilot-demo \
-                        physics-demo post-processing dynamic-sky line-path \
-                        text-labels reflection-probe \
+          for sample in sceneview-demo model-viewer camera-manipulator gltf-camera \
+                        autopilot-demo physics-demo post-processing dynamic-sky \
+                        line-path text-labels reflection-probe \
                         ar-model-viewer ar-augmented-image ar-cloud-anchor ar-point-cloud; do
             apk=$(find "samples/$sample/build/outputs/apk/debug" -name "*.apk" | head -1)
             if [ -n "$apk" ]; then

.github/workflows/docs.yml

@@ -11,6 +11,10 @@ on:
       - 'CONTRIBUTING.md'
       - 'ROADMAP.md'
       - 'llms.txt'
+      - 'sceneview/Module.md'
+      - 'arsceneview/Module.md'
+  release:
+    types: [published]
   workflow_dispatch:
 
 jobs:

.gitignore

@@ -26,6 +26,5 @@ samples/*/build/
 # MCP compiled test artifacts
 mcp/dist/*.test.js
 mcp/llms.txt
-
-# MkDocs build output
+sceneview-core/build/
 docs/site/

docs/docs/architecture.md

@@ -10,7 +10,7 @@ from your Kotlin code all the way down to the GPU.
 SceneView is a stack of five layers.  Each layer only talks to the one directly below it,
 keeping responsibilities clean and dependencies one-directional.
 
-```
+```text
  ┌──────────────────────────────────────────────────┐
  │          Your Android App (Kotlin/Compose)        │
  ├──────────────────────────────────────────────────┤
@@ -124,7 +124,7 @@ maintains an idempotent `managedNodes` set to prevent double-add/remove.
 
 ### How the threading works in practice
 
-```
+```text
   ┌────────────────────┐      ┌──────────────────────┐
   │   Dispatchers.IO   │      │   Main Thread         │
   │                    │      │                      │
@@ -190,7 +190,7 @@ LaunchedEffect(engine, renderer, view, scene) {
 SceneView ties every Filament resource to Compose's lifecycle through `remember` +
 `DisposableEffect`, following a consistent pattern:
 
-```
+```text
 remember { create resource }  →  DisposableEffect { onDispose { destroy resource } }
 ```
 
@@ -228,7 +228,7 @@ registered models when the loader itself is disposed.
 
 Every frame follows this sequence:
 
-```
+```text
  1.  Compose recomposition
      └─ SideEffect pushes updated node properties to Filament entities
 
@@ -261,7 +261,7 @@ For AR scenes (`ARScene`), step 2 additionally:
 
 SceneView is split into two Gradle modules with a strict dependency direction:
 
-```
+```text
  ┌─────────────────────┐         ┌─────────────────────────┐
  │     sceneview/       │◀────────│     arsceneview/         │
  │                     │ depends │                         │