chore: version packages (#226)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.changeset/config.json

@@ -20,7 +20,9 @@
       "@json-render/image",
       "@json-render/mcp",
       "@json-render/svelte",
-      "@json-render/solid"
+      "@json-render/solid",
+      "@json-render/react-three-fiber",
+      "@json-render/yaml"
     ]
   ],
   "linked": [],

.github/workflows/ci.yml

@@ -13,34 +13,43 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  ci:
-    name: Lint, Type Check & Build
+  lint:
+    name: Lint
     runs-on: ubuntu-latest
-
     steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Install pnpm
-        uses: pnpm/action-setup@v4
-
-      - name: Setup Node.js
-        uses: actions/setup-node@v4
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: 20
-          cache: "pnpm"
+          cache: pnpm
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm lint
 
-      - name: Install dependencies
-        run: pnpm install --frozen-lockfile
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: pnpm
+      - run: pnpm install --frozen-lockfile
+      - name: Build packages
+        run: pnpm turbo run build --filter='./packages/*'
+      - run: pnpm test
 
-      - name: Lint
-        run: pnpm lint
-
-      - name: Type check
-        run: pnpm type-check
-
-      - name: Test
-        run: pnpm test
-
-      - name: Build
-        run: pnpm build
+  typecheck:
+    name: Type Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: pnpm
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm type-check

README.md

@@ -23,6 +23,8 @@ npm install @json-render/core @json-render/vue
 npm install @json-render/core @json-render/svelte
 # or for SolidJS
 npm install @json-render/core @json-render/solid
+# or for 3D scenes
+npm install @json-render/core @json-render/react-three-fiber @react-three/fiber @react-three/drei three
 ```
 
 ## Why json-render?
@@ -121,6 +123,7 @@ function Dashboard({ spec }) {
 | `@json-render/svelte`       | Svelte 5 renderer with runes-based reactivity                          |
 | `@json-render/solid`        | SolidJS renderer with fine-grained reactive contexts                   |
 | `@json-render/shadcn`       | 36 pre-built shadcn/ui components (Radix UI + Tailwind CSS)            |
+| `@json-render/react-three-fiber` | React Three Fiber renderer for 3D scenes (19 built-in components)  |
 | `@json-render/react-native` | React Native renderer with standard mobile components                  |
 | `@json-render/remotion`     | Remotion video renderer, timeline schema                               |
 | `@json-render/react-pdf`    | React PDF renderer for generating PDF documents from specs             |
@@ -132,6 +135,7 @@ function Dashboard({ spec }) {
 | `@json-render/jotai`        | Jotai adapter for `StateStore`                                         |
 | `@json-render/xstate`       | XState Store (atom) adapter for `StateStore`                           |
 | `@json-render/mcp`          | MCP Apps integration for Claude, ChatGPT, Cursor, VS Code              |
+| `@json-render/yaml`         | YAML wire format with streaming parser, edit modes, AI SDK transform   |
 
 ## Renderers
 
@@ -434,6 +438,47 @@ import { renderToSvg } from "@json-render/image/render";
 const svg = await renderToSvg(spec, { fonts });
 ```
 
+### Three.js (3D)
+
+```tsx
+import { defineCatalog } from "@json-render/core";
+import { schema, defineRegistry } from "@json-render/react";
+import {
+  threeComponentDefinitions,
+  threeComponents,
+  ThreeCanvas,
+} from "@json-render/react-three-fiber";
+
+const catalog = defineCatalog(schema, {
+  components: {
+    Box: threeComponentDefinitions.Box,
+    Sphere: threeComponentDefinitions.Sphere,
+    AmbientLight: threeComponentDefinitions.AmbientLight,
+    DirectionalLight: threeComponentDefinitions.DirectionalLight,
+    OrbitControls: threeComponentDefinitions.OrbitControls,
+  },
+  actions: {},
+});
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    Box: threeComponents.Box,
+    Sphere: threeComponents.Sphere,
+    AmbientLight: threeComponents.AmbientLight,
+    DirectionalLight: threeComponents.DirectionalLight,
+    OrbitControls: threeComponents.OrbitControls,
+  },
+});
+
+<ThreeCanvas
+  spec={spec}
+  registry={registry}
+  shadows
+  camera={{ position: [5, 5, 5], fov: 50 }}
+  style={{ width: "100%", height: "100vh" }}
+/>;
+```
+
 ## Features
 
 ### Streaming (SpecStream)

apps/web/CHANGELOG.md

@@ -1,5 +1,34 @@
 # web
 
+## 0.1.9
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/codegen@0.14.1
+  - @json-render/react@0.14.1
+  - @json-render/yaml@0.14.1
+
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/yaml@0.14.0
+  - @json-render/codegen@0.14.0
+  - @json-render/react@0.14.0
+
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/codegen@0.13.0
+  - @json-render/react@0.13.0
+
 ## 0.1.6
 
 ### Patch Changes

apps/web/app/(main)/docs/api/core/page.mdx

@@ -76,6 +76,7 @@ interface PromptOptions {
   system?: string;           // Custom system message intro
   customRules?: string[];    // Additional rules to append
   mode?: "standalone" | "inline" | "generate" | "chat"; // Output mode (default: "standalone")
+  editModes?: EditMode[];    // Edit modes to document in prompt (default: ["patch"])
 }
 
 interface SpecValidationResult<T> {
@@ -480,9 +481,10 @@ function buildUserPrompt(options: UserPromptOptions): string
 
 interface UserPromptOptions {
   prompt: string;                        // The user's text prompt
-  currentSpec?: Spec | null;             // Existing spec to refine (triggers patch-only mode)
+  currentSpec?: Spec | null;             // Existing spec to refine (triggers edit mode)
   state?: Record<string, unknown> | null; // Runtime state context to include
   maxPromptLength?: number;              // Max length for user text (truncates before wrapping)
+  editModes?: EditMode[];                // Edit modes for refinement (default: ["patch"])
 }
 ```
 
@@ -492,14 +494,15 @@ interface UserPromptOptions {
 const userPrompt = buildUserPrompt({ prompt: "create a todo app" });
 ```
 
-### Refinement (patch-only mode)
+### Refinement (edit modes)
 
-When `currentSpec` is provided, the prompt instructs the AI to output only the patches needed for the change, not recreate the entire spec:
+When `currentSpec` is provided, the prompt instructs the AI to use the specified edit modes instead of recreating the entire spec. Available modes: `"patch"` (RFC 6902), `"merge"` (RFC 7396), and `"diff"` (unified diff).
 
 ```typescript
 const userPrompt = buildUserPrompt({
   prompt: "add a dark mode toggle",
   currentSpec: existingSpec,
+  editModes: ["patch", "merge"],
 });
 ```
 
@@ -514,6 +517,93 @@ const userPrompt = buildUserPrompt({
 });
 ```
 
+## Edit Modes
+
+Universal edit mode utilities for modifying existing specs. Used by `buildUserPrompt` internally and available for direct use.
+
+```typescript
+import {
+  buildEditInstructions,
+  buildEditUserPrompt,
+  isNonEmptySpec,
+  type EditMode,
+  type EditConfig,
+} from '@json-render/core';
+
+type EditMode = "patch" | "merge" | "diff";
+```
+
+### buildEditInstructions
+
+Generate the prompt section describing available edit modes. Supports both JSON and YAML formats.
+
+```typescript
+function buildEditInstructions(config: EditConfig, format: "json" | "yaml"): string
+
+const instructions = buildEditInstructions({ modes: ["patch", "merge"] }, "json");
+```
+
+### buildEditUserPrompt
+
+Build a user prompt for editing an existing spec. Includes the current spec (with line numbers when diff mode is enabled) and mode-specific instructions.
+
+```typescript
+function buildEditUserPrompt(options: BuildEditUserPromptOptions): string
+
+interface BuildEditUserPromptOptions {
+  prompt: string;
+  currentSpec?: Spec | null;
+  config?: EditConfig;
+  format: "json" | "yaml";
+  maxPromptLength?: number;
+  serializer?: (spec: Spec) => string;
+}
+```
+
+### isNonEmptySpec
+
+Check whether a value is a non-empty spec (has a root string and at least one element).
+
+```typescript
+function isNonEmptySpec(spec: unknown): spec is Spec
+```
+
+## Deep Merge and Diff
+
+Format-agnostic utilities for merging and diffing spec objects.
+
+### deepMergeSpec
+
+Deep-merge with RFC 7396 semantics: `null` deletes, arrays replace, objects recurse. Neither input is mutated.
+
+```typescript
+import { deepMergeSpec } from '@json-render/core';
+
+function deepMergeSpec(
+  base: Record<string, unknown>,
+  patch: Record<string, unknown>
+): Record<string, unknown>
+
+const merged = deepMergeSpec(currentSpec, { elements: { main: { props: { title: "New" } } } });
+```
+
+### diffToPatches
+
+Generate RFC 6902 JSON Patch operations that transform one object into another. Arrays are compared shallowly and replaced atomically; plain objects recurse.
+
+```typescript
+import { diffToPatches } from '@json-render/core';
+
+function diffToPatches(
+  oldObj: Record<string, unknown>,
+  newObj: Record<string, unknown>,
+  basePath?: string
+): JsonPatch[]
+
+const patches = diffToPatches(oldSpec, newSpec);
+// [{ op: "replace", path: "/elements/main/props/title", value: "New Title" }]
+```
+
 ## evaluateVisibility
 
 Evaluates a visibility condition against the state model.

apps/web/app/(main)/docs/api/react-three-fiber/page.mdx

@@ -0,0 +1,416 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/react-three-fiber")
+
+# @json-render/react-three-fiber
+
+React Three Fiber renderer for json-render. 19 built-in 3D components for meshes, lights, models, environments, text, cameras, and controls.
+
+## Installation
+
+```bash
+npm install @json-render/react-three-fiber @json-render/core @json-render/react @react-three/fiber @react-three/drei three zod
+```
+
+## Entry Points
+
+<table>
+<thead>
+<tr>
+<th>Entry Point</th>
+<th>Exports</th>
+<th>Use For</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>@json-render/react-three-fiber</code></td>
+<td><code>threeComponents</code>, <code>ThreeRenderer</code>, <code>ThreeCanvas</code>, schemas</td>
+<td>React Three Fiber implementations and renderer</td>
+</tr>
+<tr>
+<td><code>@json-render/react-three-fiber/catalog</code></td>
+<td><code>threeComponentDefinitions</code></td>
+<td>Catalog schemas (no R3F dependency, safe for server)</td>
+</tr>
+</tbody>
+</table>
+
+## Usage
+
+```tsx
+import {'{ defineCatalog }'} from "@json-render/core";
+import {'{ schema, defineRegistry }'} from "@json-render/react";
+import {'{'}
+  threeComponentDefinitions,
+  threeComponents,
+  ThreeCanvas,
+{'}'} from "@json-render/react-three-fiber";
+
+const catalog = defineCatalog(schema, {'{'}
+  components: {'{'}
+    Box: threeComponentDefinitions.Box,
+    Sphere: threeComponentDefinitions.Sphere,
+    AmbientLight: threeComponentDefinitions.AmbientLight,
+    DirectionalLight: threeComponentDefinitions.DirectionalLight,
+    OrbitControls: threeComponentDefinitions.OrbitControls,
+  {'}'},
+  actions: {'{}'},
+{'}'});
+
+const {'{ registry }'} = defineRegistry(catalog, {'{'}
+  components: {'{'}
+    Box: threeComponents.Box,
+    Sphere: threeComponents.Sphere,
+    AmbientLight: threeComponents.AmbientLight,
+    DirectionalLight: threeComponents.DirectionalLight,
+    OrbitControls: threeComponents.OrbitControls,
+  {'}'},
+{'}'});
+```
+
+### ThreeCanvas (convenience)
+
+```tsx
+<ThreeCanvas
+  spec={'{spec}'}
+  registry={'{registry}'}
+  shadows
+  camera={'{'}{'{ position: [5, 5, 5], fov: 50 }'}{'}'} 
+  style={'{'}{'{ width: "100%", height: "100vh" }'}{'}'} 
+/>
+```
+
+### Manual Canvas Setup
+
+```tsx
+import {'{ Canvas }'} from "@react-three/fiber";
+import {'{ ThreeRenderer }'} from "@json-render/react-three-fiber";
+
+<Canvas shadows>
+  <ThreeRenderer spec={'{spec}'} registry={'{registry}'} />
+</Canvas>
+```
+
+## Components
+
+### Primitives
+
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+<th>Key Props</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Box</code></td>
+<td>Box mesh (default 1x1x1)</td>
+<td><code>width</code>, <code>height</code>, <code>depth</code>, <code>material</code></td>
+</tr>
+<tr>
+<td><code>Sphere</code></td>
+<td>Sphere mesh</td>
+<td><code>radius</code>, <code>widthSegments</code>, <code>heightSegments</code>, <code>material</code></td>
+</tr>
+<tr>
+<td><code>Cylinder</code></td>
+<td>Cylinder mesh</td>
+<td><code>radiusTop</code>, <code>radiusBottom</code>, <code>height</code>, <code>material</code></td>
+</tr>
+<tr>
+<td><code>Cone</code></td>
+<td>Cone mesh</td>
+<td><code>radius</code>, <code>height</code>, <code>material</code></td>
+</tr>
+<tr>
+<td><code>Torus</code></td>
+<td>Torus (donut) mesh</td>
+<td><code>radius</code>, <code>tube</code>, <code>material</code></td>
+</tr>
+<tr>
+<td><code>Plane</code></td>
+<td>Flat plane mesh</td>
+<td><code>width</code>, <code>height</code>, <code>material</code></td>
+</tr>
+<tr>
+<td><code>Capsule</code></td>
+<td>Capsule mesh</td>
+<td><code>radius</code>, <code>length</code>, <code>material</code></td>
+</tr>
+</tbody>
+</table>
+
+All primitives share: <code>position</code>, <code>rotation</code>, <code>scale</code>, <code>castShadow</code>, <code>receiveShadow</code>, <code>material</code>.
+
+### Material Schema
+
+<table>
+<thead>
+<tr>
+<th>Property</th>
+<th>Type</th>
+<th>Default</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>color</code></td>
+<td><code>string</code></td>
+<td><code>"#ffffff"</code></td>
+</tr>
+<tr>
+<td><code>metalness</code></td>
+<td><code>number</code></td>
+<td><code>0</code></td>
+</tr>
+<tr>
+<td><code>roughness</code></td>
+<td><code>number</code></td>
+<td><code>1</code></td>
+</tr>
+<tr>
+<td><code>emissive</code></td>
+<td><code>string</code></td>
+<td><code>"#000000"</code></td>
+</tr>
+<tr>
+<td><code>emissiveIntensity</code></td>
+<td><code>number</code></td>
+<td><code>1</code></td>
+</tr>
+<tr>
+<td><code>opacity</code></td>
+<td><code>number</code></td>
+<td><code>1</code></td>
+</tr>
+<tr>
+<td><code>transparent</code></td>
+<td><code>boolean</code></td>
+<td><code>false</code></td>
+</tr>
+<tr>
+<td><code>wireframe</code></td>
+<td><code>boolean</code></td>
+<td><code>false</code></td>
+</tr>
+</tbody>
+</table>
+
+### Lights
+
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+<th>Key Props</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>AmbientLight</code></td>
+<td>Uniform illumination</td>
+<td><code>color</code>, <code>intensity</code></td>
+</tr>
+<tr>
+<td><code>DirectionalLight</code></td>
+<td>Sunlight-style</td>
+<td><code>position</code>, <code>color</code>, <code>intensity</code>, <code>castShadow</code></td>
+</tr>
+<tr>
+<td><code>PointLight</code></td>
+<td>Radiates from a point</td>
+<td><code>position</code>, <code>color</code>, <code>intensity</code>, <code>distance</code>, <code>decay</code></td>
+</tr>
+<tr>
+<td><code>SpotLight</code></td>
+<td>Cone of light</td>
+<td><code>position</code>, <code>color</code>, <code>intensity</code>, <code>angle</code>, <code>penumbra</code></td>
+</tr>
+</tbody>
+</table>
+
+### Other Components
+
+<table>
+<thead>
+<tr>
+<th>Component</th>
+<th>Description</th>
+<th>Key Props</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>Group</code></td>
+<td>Container for children</td>
+<td><code>position</code>, <code>rotation</code>, <code>scale</code></td>
+</tr>
+<tr>
+<td><code>Model</code></td>
+<td>GLTF/GLB model loader</td>
+<td><code>url</code>, <code>position</code>, <code>rotation</code>, <code>scale</code></td>
+</tr>
+<tr>
+<td><code>Environment</code></td>
+<td>HDRI environment map</td>
+<td><code>preset</code>, <code>background</code>, <code>blur</code>, <code>intensity</code></td>
+</tr>
+<tr>
+<td><code>Fog</code></td>
+<td>Linear fog effect</td>
+<td><code>color</code>, <code>near</code>, <code>far</code></td>
+</tr>
+<tr>
+<td><code>GridHelper</code></td>
+<td>Reference grid</td>
+<td><code>size</code>, <code>divisions</code>, <code>color</code></td>
+</tr>
+<tr>
+<td><code>Text3D</code></td>
+<td>3D text (SDF)</td>
+<td><code>text</code>, <code>fontSize</code>, <code>color</code>, <code>anchorX</code>, <code>anchorY</code></td>
+</tr>
+<tr>
+<td><code>PerspectiveCamera</code></td>
+<td>Camera</td>
+<td><code>position</code>, <code>fov</code>, <code>near</code>, <code>far</code>, <code>makeDefault</code></td>
+</tr>
+<tr>
+<td><code>OrbitControls</code></td>
+<td>Camera controls</td>
+<td><code>enableDamping</code>, <code>enableZoom</code>, <code>autoRotate</code></td>
+</tr>
+</tbody>
+</table>
+
+## Shared Schemas
+
+Reusable Zod schemas for custom 3D components:
+
+```tsx
+import {'{ vector3Schema, materialSchema, transformProps, shadowProps }'} from "@json-render/react-three-fiber";
+```
+
+<table>
+<thead>
+<tr>
+<th>Export</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>vector3Schema</code></td>
+<td><code>z.tuple([z.number(), z.number(), z.number()])</code></td>
+</tr>
+<tr>
+<td><code>materialSchema</code></td>
+<td>Standard material props (color, metalness, roughness, etc.)</td>
+</tr>
+<tr>
+<td><code>transformProps</code></td>
+<td><code>{'{ position, rotation, scale }'}</code> schema fields</td>
+</tr>
+<tr>
+<td><code>shadowProps</code></td>
+<td><code>{'{ castShadow, receiveShadow }'}</code> schema fields</td>
+</tr>
+</tbody>
+</table>
+
+## ThreeRenderer
+
+<table>
+<thead>
+<tr>
+<th>Prop</th>
+<th>Type</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>spec</code></td>
+<td><code>Spec | null</code></td>
+<td>The spec to render as a 3D scene</td>
+</tr>
+<tr>
+<td><code>registry</code></td>
+<td><code>ComponentRegistry</code></td>
+<td>Component registry from <code>defineRegistry</code></td>
+</tr>
+<tr>
+<td><code>store</code></td>
+<td><code>StateStore</code></td>
+<td>External state store (controlled mode)</td>
+</tr>
+<tr>
+<td><code>initialState</code></td>
+<td><code>Record&lt;string, unknown&gt;</code></td>
+<td>Initial state (uncontrolled mode)</td>
+</tr>
+<tr>
+<td><code>handlers</code></td>
+<td><code>Record&lt;string, Function&gt;</code></td>
+<td>Action handlers</td>
+</tr>
+<tr>
+<td><code>loading</code></td>
+<td><code>boolean</code></td>
+<td>Whether the spec is streaming</td>
+</tr>
+<tr>
+<td><code>children</code></td>
+<td><code>ReactNode</code></td>
+<td>Additional R3F elements alongside the spec</td>
+</tr>
+</tbody>
+</table>
+
+## ThreeCanvas
+
+Extends <code>ThreeRendererProps</code> with Canvas options:
+
+<table>
+<thead>
+<tr>
+<th>Prop</th>
+<th>Type</th>
+<th>Description</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><code>shadows</code></td>
+<td><code>boolean</code></td>
+<td>Enable shadow maps</td>
+</tr>
+<tr>
+<td><code>camera</code></td>
+<td><code>object</code></td>
+<td>Default camera config (position, fov, etc.)</td>
+</tr>
+<tr>
+<td><code>className</code></td>
+<td><code>string</code></td>
+<td>CSS class for the canvas container</td>
+</tr>
+<tr>
+<td><code>style</code></td>
+<td><code>CSSProperties</code></td>
+<td>Inline styles for the canvas container</td>
+</tr>
+</tbody>
+</table>
+
+## Type Helpers
+
+```tsx
+import type {'{ ThreeProps }'} from "@json-render/react-three-fiber";
+
+type BoxProps = ThreeProps<"Box">;
+type SphereProps = ThreeProps<"Sphere">;
+```

apps/web/app/(main)/docs/api/yaml/page.mdx

@@ -0,0 +1,232 @@
+import { pageMetadata } from "@/lib/page-metadata"
+export const metadata = pageMetadata("docs/api/yaml")
+
+# @json-render/yaml
+
+YAML wire format for json-render. Progressive rendering and surgical edits via streaming YAML.
+
+## Prompt Generation
+
+### yamlPrompt
+
+Generate a YAML-format system prompt from any json-render catalog. Works with catalogs from any renderer.
+
+```typescript
+function yamlPrompt(
+  catalog: Catalog,
+  options?: YamlPromptOptions
+): string
+```
+
+```typescript
+import { yamlPrompt } from "@json-render/yaml";
+
+const systemPrompt = yamlPrompt(catalog, {
+  mode: "standalone",
+  customRules: ["Always use dark theme"],
+  editModes: ["merge"],
+});
+```
+
+### YamlPromptOptions
+
+<table>
+  <thead>
+    <tr>
+      <th>Option</th>
+      <th>Type</th>
+      <th>Default</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>system</code></td>
+      <td><code>string</code></td>
+      <td><code>{'\"You are a UI generator that outputs YAML.\"'}</code></td>
+      <td>Custom system message intro</td>
+    </tr>
+    <tr>
+      <td><code>mode</code></td>
+      <td><code>{'\"standalone\" | \"inline\"'}</code></td>
+      <td><code>{'\"standalone\"'}</code></td>
+      <td>Standalone outputs only YAML; inline allows conversational responses with embedded YAML fences</td>
+    </tr>
+    <tr>
+      <td><code>customRules</code></td>
+      <td><code>{'string[]'}</code></td>
+      <td><code>{'[]'}</code></td>
+      <td>Additional rules appended to the prompt</td>
+    </tr>
+    <tr>
+      <td><code>editModes</code></td>
+      <td><code>{'EditMode[]'}</code></td>
+      <td><code>{'[\"merge\"]'}</code></td>
+      <td>Edit modes to document in the prompt (patch, merge, diff)</td>
+    </tr>
+  </tbody>
+</table>
+
+## AI SDK Transform
+
+### createYamlTransform
+
+Creates a `TransformStream` that intercepts AI SDK stream chunks and converts YAML spec/edit blocks into json-render patch data parts.
+
+```typescript
+function createYamlTransform(
+  options?: YamlTransformOptions
+): TransformStream<StreamChunk, StreamChunk>
+```
+
+Recognized fence types:
+
+- <code>{'```yaml-spec'}</code> -- Full YAML spec, parsed progressively
+- <code>{'```yaml-edit'}</code> -- Partial YAML, deep-merged with current spec
+- <code>{'```yaml-patch'}</code> -- RFC 6902 JSON Patch lines
+- <code>{'```diff'}</code> -- Unified diff against serialized spec
+
+### pipeYamlRender
+
+Convenience wrapper that pipes an AI SDK stream through the YAML transform. Drop-in replacement for `pipeJsonRender` from `@json-render/core`.
+
+```typescript
+function pipeYamlRender<T>(
+  stream: ReadableStream<T>,
+  options?: YamlTransformOptions
+): ReadableStream<T>
+```
+
+```typescript
+import { pipeYamlRender } from "@json-render/yaml";
+import { createUIMessageStream, createUIMessageStreamResponse } from "ai";
+
+const stream = createUIMessageStream({
+  execute: async ({ writer }) => {
+    writer.merge(pipeYamlRender(result.toUIMessageStream()));
+  },
+});
+return createUIMessageStreamResponse({ stream });
+```
+
+## Streaming Parser
+
+### createYamlStreamCompiler
+
+Create a streaming YAML compiler that incrementally parses YAML text and emits JSON Patch operations by diffing each successful parse against the previous snapshot.
+
+```typescript
+function createYamlStreamCompiler<T>(
+  initial?: Partial<T>
+): YamlStreamCompiler<T>
+```
+
+```typescript
+import { createYamlStreamCompiler } from "@json-render/yaml";
+
+const compiler = createYamlStreamCompiler<Spec>();
+
+compiler.push("root: main\n");
+compiler.push("elements:\n  main:\n    type: Card\n");
+
+const { result, newPatches } = compiler.flush();
+```
+
+### YamlStreamCompiler
+
+<table>
+  <thead>
+    <tr>
+      <th>Method</th>
+      <th>Returns</th>
+      <th>Description</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>push(chunk)</code></td>
+      <td><code>{'{ result: T; newPatches: JsonPatch[] }'}</code></td>
+      <td>Push a chunk of text, returns current result and new patches</td>
+    </tr>
+    <tr>
+      <td><code>flush()</code></td>
+      <td><code>{'{ result: T; newPatches: JsonPatch[] }'}</code></td>
+      <td>Flush remaining buffer, return final result</td>
+    </tr>
+    <tr>
+      <td><code>getResult()</code></td>
+      <td><code>T</code></td>
+      <td>Get the current compiled result</td>
+    </tr>
+    <tr>
+      <td><code>getPatches()</code></td>
+      <td><code>{'JsonPatch[]'}</code></td>
+      <td>Get all patches applied so far</td>
+    </tr>
+    <tr>
+      <td><code>reset(initial?)</code></td>
+      <td><code>void</code></td>
+      <td>Reset to initial state</td>
+    </tr>
+  </tbody>
+</table>
+
+## Fence Constants
+
+Exported string constants for fence detection in custom parsers:
+
+<table>
+  <thead>
+    <tr>
+      <th>Constant</th>
+      <th>Value</th>
+    </tr>
+  </thead>
+  <tbody>
+    <tr>
+      <td><code>YAML_SPEC_FENCE</code></td>
+      <td><code>{'\"```yaml-spec\"'}</code></td>
+    </tr>
+    <tr>
+      <td><code>YAML_EDIT_FENCE</code></td>
+      <td><code>{'\"```yaml-edit\"'}</code></td>
+    </tr>
+    <tr>
+      <td><code>YAML_PATCH_FENCE</code></td>
+      <td><code>{'\"```yaml-patch\"'}</code></td>
+    </tr>
+    <tr>
+      <td><code>DIFF_FENCE</code></td>
+      <td><code>{'\"```diff\"'}</code></td>
+    </tr>
+    <tr>
+      <td><code>FENCE_CLOSE</code></td>
+      <td><code>{'\"```\"'}</code></td>
+    </tr>
+  </tbody>
+</table>
+
+## Re-exports from @json-render/core
+
+### diffToPatches
+
+Generate RFC 6902 JSON Patch operations that transform one object into another.
+
+```typescript
+function diffToPatches(
+  oldObj: Record<string, unknown>,
+  newObj: Record<string, unknown>,
+  basePath?: string
+): JsonPatch[]
+```
+
+### deepMergeSpec
+
+Deep-merge with RFC 7396 semantics: `null` deletes, arrays replace, objects recurse.
+
+```typescript
+function deepMergeSpec(
+  base: Record<string, unknown>,
+  patch: Record<string, unknown>
+): Record<string, unknown>
+```

apps/web/app/api/docs-chat/route.ts

@@ -16,8 +16,8 @@ const SYSTEM_PROMPT = `You are a helpful documentation assistant for json-render
 
 GitHub repository: https://github.com/vercel-labs/json-render
 Documentation: https://json-render.dev/docs
-npm packages: @json-render/core, @json-render/react, @json-render/vue, @json-render/svelte, @json-render/solid, @json-render/shadcn, @json-render/react-native, @json-render/react-email, @json-render/react-pdf, @json-render/image, @json-render/remotion, @json-render/codegen, @json-render/mcp, @json-render/redux, @json-render/zustand, @json-render/jotai, @json-render/xstate
-Skills: json-render ships AI agent skills that teach coding agents how to use each package. Install with "npx skills add vercel-labs/json-render --skill <name>". Available skills: core, react, react-pdf, react-email, react-native, shadcn, image, remotion, vue, svelte, solid, codegen, mcp, redux, zustand, jotai, xstate. See /docs/skills for details.
+npm packages: @json-render/core, @json-render/react, @json-render/vue, @json-render/svelte, @json-render/solid, @json-render/shadcn, @json-render/react-three-fiber, @json-render/react-native, @json-render/react-email, @json-render/react-pdf, @json-render/image, @json-render/remotion, @json-render/codegen, @json-render/mcp, @json-render/redux, @json-render/zustand, @json-render/jotai, @json-render/xstate, @json-render/yaml
+Skills: json-render ships AI agent skills that teach coding agents how to use each package. Install with "npx skills add vercel-labs/json-render --skill <name>". Available skills: core, react, react-pdf, react-email, react-native, shadcn, react-three-fiber, image, remotion, vue, svelte, solid, codegen, mcp, redux, zustand, jotai, xstate, yaml. See /docs/skills for details.
 
 You have access to the full json-render documentation via the bash and readFile tools. The docs are available as markdown files in the /workspace/docs/ directory.
 

apps/web/app/api/generate/route.ts

@@ -1,32 +1,73 @@
 import { streamText } from "ai";
 import { headers } from "next/headers";
-import { buildUserPrompt } from "@json-render/core";
+import type { Spec, EditMode } from "@json-render/core";
+import {
+  buildUserPrompt,
+  buildEditUserPrompt,
+  isNonEmptySpec,
+} from "@json-render/core";
+import { yamlPrompt } from "@json-render/yaml";
+import { stringify as yamlStringify } from "yaml";
 import { minuteRateLimit, dailyRateLimit } from "@/lib/rate-limit";
 import { playgroundCatalog } from "@/lib/render/catalog";
 
 export const maxDuration = 30;
 
-const SYSTEM_PROMPT = playgroundCatalog.prompt({
-  customRules: [
-    "NEVER use viewport height classes (min-h-screen, h-screen) - the UI renders inside a fixed-size container.",
-    "NEVER use page background colors (bg-gray-50) - the container has its own background.",
-    "For forms or small UIs: use Card as root with maxWidth:'sm' or 'md' and centered:true.",
-    "For content-heavy UIs (blogs, dashboards, product listings): use Stack or Grid as root. Use Grid with 2-3 columns for card layouts.",
-    "Wrap each repeated item in a Card for visual separation and structure.",
-    "Use realistic, professional sample data. Include 3-5 items with varied content. Never leave state arrays empty.",
-    'For form inputs (Input, Textarea, Select), always include checks for validation (e.g. required, email, minLength). Always pair checks with a $bindState expression on the value prop (e.g. { "$bindState": "/path" }).',
-  ],
-});
+const PLAYGROUND_RULES = [
+  "NEVER use viewport height classes (min-h-screen, h-screen) - the UI renders inside a fixed-size container.",
+  "NEVER use page background colors (bg-gray-50) - the container has its own background.",
+  "For forms or small UIs: use Card as root with maxWidth:'sm' or 'md' and centered:true.",
+  "For content-heavy UIs (blogs, dashboards, product listings): use Stack or Grid as root. Use Grid with 2-3 columns for card layouts.",
+  "Wrap each repeated item in a Card for visual separation and structure.",
+  "Use realistic, professional sample data. Include 3-5 items with varied content. Never leave state arrays empty.",
+  'For form inputs (Input, Textarea, Select), always include checks for validation (e.g. required, email, minLength). Always pair checks with a $bindState expression on the value prop (e.g. { "$bindState": "/path" }).',
+];
 
 const MAX_PROMPT_LENGTH = 500;
 const DEFAULT_MODEL = "anthropic/claude-haiku-4.5";
 
+function getSystemPrompt(isYaml: boolean, editModes?: EditMode[]): string {
+  if (isYaml) {
+    return yamlPrompt(playgroundCatalog, {
+      mode: "standalone",
+      customRules: PLAYGROUND_RULES,
+      editModes: editModes ?? ["merge"],
+    });
+  }
+  return playgroundCatalog.prompt({
+    customRules: PLAYGROUND_RULES,
+    editModes,
+  });
+}
+
+function buildYamlUserPrompt(
+  prompt: string,
+  previousSpec?: Spec | null,
+  editModes?: EditMode[],
+): string {
+  if (isNonEmptySpec(previousSpec)) {
+    return buildEditUserPrompt({
+      prompt,
+      currentSpec: previousSpec,
+      config: { modes: editModes ?? ["merge"] },
+      format: "yaml",
+      maxPromptLength: MAX_PROMPT_LENGTH,
+      serializer: (s) => yamlStringify(s, { indent: 2 }).trimEnd(),
+    });
+  }
+
+  const userText = prompt.slice(0, MAX_PROMPT_LENGTH);
+  return [
+    userText,
+    "",
+    "Output the full spec in a ```yaml-spec fence. Stream progressively — output elements one at a time.",
+  ].join("\n");
+}
+
 export async function POST(req: Request) {
-  // Get client IP for rate limiting
   const headersList = await headers();
   const ip = headersList.get("x-forwarded-for")?.split(",")[0] ?? "anonymous";
 
-  // Check rate limits (minute and daily)
   const [minuteResult, dailyResult] = await Promise.all([
     minuteRateLimit.limit(ip),
     dailyRateLimit.limit(ip),
@@ -48,22 +89,34 @@ export async function POST(req: Request) {
     );
   }
 
-  const { prompt, context } = await req.json();
+  const { prompt, context, format, editModes } = await req.json();
+  const isYaml = format === "yaml";
 
-  const userPrompt = buildUserPrompt({
-    prompt,
-    currentSpec: context?.previousSpec,
-    maxPromptLength: MAX_PROMPT_LENGTH,
-  });
+  const systemPrompt = getSystemPrompt(isYaml, editModes);
+  const userPrompt = isYaml
+    ? buildYamlUserPrompt(prompt, context?.previousSpec, editModes)
+    : buildUserPrompt({
+        prompt,
+        currentSpec: context?.previousSpec,
+        maxPromptLength: MAX_PROMPT_LENGTH,
+        editModes,
+      });
 
   const result = streamText({
     model: process.env.AI_GATEWAY_MODEL || DEFAULT_MODEL,
-    system: SYSTEM_PROMPT,
+    system: [
+      {
+        role: "system",
+        content: systemPrompt,
+        providerOptions: {
+          anthropic: { cacheControl: { type: "ephemeral" } },
+        },
+      },
+    ],
     prompt: userPrompt,
     temperature: 0.7,
   });
 
-  // Stream the text, then append token usage metadata at the end
   const encoder = new TextEncoder();
   const textStream = result.textStream;
 
@@ -72,7 +125,6 @@ export async function POST(req: Request) {
       for await (const chunk of textStream) {
         controller.enqueue(encoder.encode(chunk));
       }
-      // Append usage metadata after stream completes
       try {
         const usage = await result.usage;
         const meta = JSON.stringify({
@@ -80,10 +132,12 @@ export async function POST(req: Request) {
           promptTokens: usage.inputTokens,
           completionTokens: usage.outputTokens,
           totalTokens: usage.totalTokens,
+          cachedTokens: usage.inputTokenDetails?.cacheReadTokens ?? 0,
+          cacheWriteTokens: usage.inputTokenDetails?.cacheWriteTokens ?? 0,
         });
         controller.enqueue(encoder.encode(`\n${meta}\n`));
       } catch {
-        // Usage not available — skip silently
+        // Usage not available
       }
       controller.close();
     },

apps/web/components/code-block.tsx

@@ -145,7 +145,7 @@ function getHighlighter() {
   if (!highlighterPromise) {
     highlighterPromise = createHighlighter({
       themes: [vercelLightTheme, vercelDarkTheme],
-      langs: ["json", "tsx", "typescript"],
+      langs: ["json", "tsx", "typescript", "yaml"],
     });
   }
   return highlighterPromise;
@@ -158,7 +158,7 @@ if (typeof window !== "undefined") {
 
 interface CodeBlockProps {
   code: string;
-  lang: "json" | "tsx" | "typescript";
+  lang: "json" | "tsx" | "typescript" | "yaml";
   fillHeight?: boolean;
   hideCopyButton?: boolean;
 }

apps/web/components/generation-modes-diagram.tsx

@@ -1,20 +1,24 @@
 "use client";
 
-function Skeleton({ className = "" }: { className?: string }) {
-  return <div className={`rounded bg-muted-foreground/10 ${className}`} />;
-}
-
-/** Simple form wireframe reused in both diagrams */
-function FormUI() {
+function ScheduleItem({
+  time,
+  label,
+  color,
+}: {
+  time: string;
+  label: string;
+  color: string;
+}) {
   return (
-    <div className="border border-border rounded-lg p-2.5 space-y-1.5 bg-muted/30">
-      {/* Title */}
-      <Skeleton className="h-2.5 w-14 mb-1" />
-      {/* Input fields */}
-      <Skeleton className="h-4 w-full rounded-sm" />
-      <Skeleton className="h-4 w-full rounded-sm" />
-      {/* Submit button */}
-      <Skeleton className="h-4 w-16 rounded-sm bg-muted-foreground/20 mt-1" />
+    <div className="flex items-center gap-2 py-1.5 border-t border-border/50 first:border-t-0">
+      <span className="text-[10px] text-muted-foreground/60 w-12 shrink-0 tabular-nums">
+        {time}
+      </span>
+      <span
+        className="w-1.5 h-1.5 rounded-full shrink-0"
+        style={{ background: color }}
+      />
+      <span className="text-[11px] text-muted-foreground">{label}</span>
     </div>
   );
 }
@@ -22,48 +26,164 @@ function FormUI() {
 function InlineModeDiagram() {
   return (
     <div className="flex flex-col h-full">
-      <div className="text-xs font-medium text-muted-foreground mb-3 text-center">
+      <div className="text-sm font-medium text-foreground text-center mb-3">
         Inline Mode
       </div>
-      <div className="flex-1 border border-border rounded-lg bg-background overflow-hidden flex flex-col">
-        {/* Chat area */}
-        <div className="flex-1 p-3 overflow-hidden flex justify-center">
-          <div className="w-1/3 min-w-[120px] space-y-3">
-            {/* User message */}
-            <div className="flex justify-end">
-              <div className="bg-muted rounded-xl px-3 py-2">
-                <Skeleton className="h-2 w-14" />
-              </div>
+      <div className="flex-1 border border-border rounded-2xl bg-background overflow-hidden flex flex-col">
+        <div className="flex-1 p-4 space-y-3 overflow-hidden">
+          {/* User message */}
+          <div className="flex justify-end">
+            <div className="bg-muted-foreground/20 rounded-2xl rounded-br px-3.5 py-2 max-w-[85%]">
+              <span className="text-[11px] text-foreground/80">
+                I have back-to-back meetings today
+              </span>
             </div>
+          </div>
 
-            {/* Assistant text */}
-            <div className="space-y-2">
-              <div className="space-y-1.5">
-                <Skeleton className="h-2 w-full" />
-                <Skeleton className="h-2 w-3/4" />
-              </div>
-
-              {/* Inline UI */}
-              <FormUI />
-
-              {/* More text after UI */}
-              <div className="space-y-1.5">
-                <Skeleton className="h-2 w-4/5" />
+          {/* AI response */}
+          <div className="space-y-2">
+            <p className="text-[11px] text-muted-foreground/70">
+              Packed day! Here&apos;s what you&apos;ve got:
+            </p>
+            <div className="bg-muted/40 border border-border rounded-xl p-3 w-[92%]">
+              <div className="text-[11px] font-semibold text-foreground/80 mb-2">
+                Today&apos;s Schedule
               </div>
+              <ScheduleItem
+                time="10:00 AM"
+                label="Design Review"
+                color="#7aa2f7"
+              />
+              <ScheduleItem
+                time="1:00 PM"
+                label="Sprint Planning"
+                color="#bb9af7"
+              />
+              <ScheduleItem
+                time="3:30 PM"
+                label="Team Standup"
+                color="#9ece6a"
+              />
+              <ScheduleItem
+                time="4:30 PM"
+                label="Eng All-Hands"
+                color="#e0af68"
+              />
             </div>
           </div>
         </div>
 
-        {/* Input bar */}
-        <div className="p-2 flex justify-center">
-          <div className="w-1/3 min-w-[120px] flex items-center gap-2">
-            <Skeleton className="h-7 flex-1 rounded-md" />
-            <Skeleton className="h-7 w-7 rounded-md" />
+        {/* Prompt input */}
+        <div className="p-2.5">
+          <div className="bg-muted/50 border border-border rounded-xl px-2.5 py-1.5 flex items-center gap-1.5">
+            <span className="text-[10px] text-muted-foreground/40 flex-1">
+              Message...
+            </span>
+            <div className="w-5 h-5 rounded-md bg-muted-foreground/20 flex items-center justify-center">
+              <svg
+                className="w-2.5 h-2.5 text-muted-foreground/50"
+                viewBox="0 0 24 24"
+                fill="currentColor"
+              >
+                <path
+                  d="M12 4l-1.41 1.41L16.17 11H4v2h12.17l-5.58 5.59L12 20l8-8z"
+                  transform="rotate(-90 12 12)"
+                />
+              </svg>
+            </div>
           </div>
         </div>
       </div>
-      <div className="text-[10px] text-muted-foreground/60 mt-2 text-center">
-        Text + UI interleaved in messages
+      <div className="mt-3 flex flex-col items-center gap-2">
+        <div className="text-xs font-medium text-muted-foreground">
+          AI decides when UI beats text
+        </div>
+        <div className="flex items-center gap-1.5 text-[10px] text-muted-foreground/50">
+          <span>AI chatbots</span>
+          <span className="text-muted-foreground/30">/</span>
+          <span>Copilots</span>
+          <span className="text-muted-foreground/30">/</span>
+          <span>Assistants</span>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+function LandingPage() {
+  return (
+    <div className="w-full h-full flex flex-col bg-muted/20">
+      {/* Nav */}
+      <div className="flex items-center justify-between px-3 py-2 border-b border-border/50">
+        <svg
+          width="12"
+          height="12"
+          viewBox="0 0 24 24"
+          fill="none"
+          className="shrink-0"
+        >
+          <rect
+            x="2"
+            y="14"
+            width="5"
+            height="8"
+            rx="1"
+            className="fill-muted-foreground/60"
+          />
+          <rect
+            x="9.5"
+            y="8"
+            width="5"
+            height="14"
+            rx="1"
+            className="fill-muted-foreground/60"
+          />
+          <rect
+            x="17"
+            y="2"
+            width="5"
+            height="20"
+            rx="1"
+            className="fill-muted-foreground/60"
+          />
+        </svg>
+        <div className="flex items-center gap-2">
+          <span className="text-[9px] text-muted-foreground/50">Pricing</span>
+          <span className="text-[9px] text-muted-foreground/50">Blog</span>
+          <span className="text-[8px] font-semibold bg-foreground text-background rounded-md px-1.5 py-0.5 whitespace-nowrap">
+            Get Started
+          </span>
+        </div>
+      </div>
+
+      {/* Hero */}
+      <div className="flex-1 flex flex-col items-center justify-center gap-2.5 text-center px-4">
+        <span className="text-[8px] font-medium text-green-400 bg-green-400/10 border border-green-400/15 rounded-full px-2 py-0.5">
+          Trusted by 2,000+ teams
+        </span>
+        <div className="text-sm font-bold text-foreground leading-tight">
+          Analytics that
+          <br />
+          move the needle
+        </div>
+        <div className="text-[10px] text-muted-foreground/50 leading-relaxed">
+          Ship what matters. No setup required.
+        </div>
+        <div className="flex gap-1.5 mt-1">
+          <button className="bg-foreground text-background text-[9px] font-semibold rounded-lg px-3 py-1.5 whitespace-nowrap">
+            Start Free
+          </button>
+          <button className="border border-border text-muted-foreground text-[9px] font-medium rounded-lg px-3 py-1.5 whitespace-nowrap">
+            Book Demo
+          </button>
+        </div>
+      </div>
+
+      {/* Footer */}
+      <div className="flex justify-center gap-3 py-2 border-t border-border/50">
+        <span className="text-[8px] text-muted-foreground/30">Privacy</span>
+        <span className="text-[8px] text-muted-foreground/30">Terms</span>
+        <span className="text-[8px] text-muted-foreground/30">Status</span>
       </div>
     </div>
   );
@@ -72,28 +192,65 @@ function InlineModeDiagram() {
 function StandaloneModeDiagram() {
   return (
     <div className="flex flex-col h-full">
-      <div className="text-xs font-medium text-muted-foreground mb-3 text-center">
+      <div className="text-sm font-medium text-foreground text-center mb-3">
         Standalone Mode
       </div>
-      <div className="flex-1 border border-border rounded-lg bg-background overflow-hidden flex flex-row">
-        {/* Left panel - prompt */}
-        <div className="w-[38%] border-r border-border flex flex-col">
-          <div className="flex-1" />
-          <div className="p-3 space-y-2">
-            <Skeleton className="h-7 w-full rounded-md" />
-            <Skeleton className="h-5 w-16 rounded-md" />
+      <div className="flex-1 border border-border rounded-2xl bg-background overflow-hidden flex flex-row">
+        {/* Left panel - conversation */}
+        <div className="w-[38%] border-r border-border/50 flex flex-col">
+          <div className="flex-1 p-3 space-y-2.5">
+            {/* User message */}
+            <div className="flex justify-end">
+              <div className="bg-muted-foreground/20 rounded-2xl rounded-br px-2.5 py-1.5">
+                <span className="text-[10px] text-foreground/80 block leading-relaxed">
+                  A landing page for my analytics startup
+                </span>
+              </div>
+            </div>
+            {/* AI text */}
+            <p className="text-[10px] text-muted-foreground/60 leading-relaxed">
+              Here&apos;s a clean landing page with a hero, nav, and CTAs.
+            </p>
+          </div>
+
+          {/* Prompt input */}
+          <div className="p-2.5">
+            <div className="bg-muted/50 border border-border rounded-xl px-2.5 py-1.5 flex items-center gap-1.5">
+              <span className="text-[10px] text-muted-foreground/40 flex-1">
+                Message...
+              </span>
+              <div className="w-5 h-5 rounded-md bg-muted-foreground/20 flex items-center justify-center">
+                <svg
+                  className="w-2.5 h-2.5 text-muted-foreground/50"
+                  viewBox="0 0 24 24"
+                  fill="currentColor"
+                >
+                  <path
+                    d="M12 4l-1.41 1.41L16.17 11H4v2h12.17l-5.58 5.59L12 20l8-8z"
+                    transform="rotate(-90 12 12)"
+                  />
+                </svg>
+              </div>
+            </div>
           </div>
         </div>
 
-        {/* Right panel - UI preview */}
-        <div className="flex-1 p-3 flex items-center justify-center">
-          <div className="w-3/4">
-            <FormUI />
-          </div>
+        {/* Right panel - landing page */}
+        <div className="flex-1">
+          <LandingPage />
         </div>
       </div>
-      <div className="text-[10px] text-muted-foreground/60 mt-2 text-center">
-        Prompt separate from UI preview
+      <div className="mt-3 flex flex-col items-center gap-2">
+        <div className="text-xs font-medium text-muted-foreground">
+          Prompt in, UI out
+        </div>
+        <div className="flex items-center gap-1.5 text-[10px] text-muted-foreground/50">
+          <span>Website builders</span>
+          <span className="text-muted-foreground/30">/</span>
+          <span>Text-to-widget</span>
+          <span className="text-muted-foreground/30">/</span>
+          <span>Dashboards</span>
+        </div>
       </div>
     </div>
   );
@@ -103,10 +260,10 @@ export function GenerationModesDiagram() {
   return (
     <div className="not-prose my-8">
       <div className="grid grid-cols-1 sm:grid-cols-2 gap-6">
-        <div className="h-[280px]">
+        <div className="h-[420px]">
           <InlineModeDiagram />
         </div>
-        <div className="h-[280px]">
+        <div className="h-[420px]">
           <StandaloneModeDiagram />
         </div>
       </div>

apps/web/components/header.tsx

@@ -100,7 +100,7 @@ export function Header() {
             >
               <path d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0016 8c0-4.42-3.58-8-8-8z" />
             </svg>
-            <span>11k</span>
+            <span>12k</span>
           </a>
           <ThemeToggle />
         </nav>

apps/web/components/playground.tsx

@@ -2,10 +2,16 @@
 
 import { useEffect, useState, useCallback, useRef, useMemo } from "react";
 import { flushSync } from "react-dom";
-import { useUIStream, type TokenUsage } from "@json-render/react";
 import type { Spec } from "@json-render/core";
 import { collectUsedComponents, serializeProps } from "@json-render/codegen";
 import { toast } from "sonner";
+import { stringify as yamlStringify } from "yaml";
+import type { EditMode } from "@json-render/core";
+import {
+  usePlaygroundStream,
+  type StreamFormat,
+  type TokenUsage,
+} from "@/lib/use-playground-stream";
 import {
   ResizablePanelGroup,
   ResizablePanel,
@@ -22,10 +28,10 @@ import { PlaygroundRenderer } from "@/lib/render/renderer";
 import { playgroundCatalog } from "@/lib/render/catalog";
 import { buildCatalogDisplayData } from "@/lib/render/catalog-display";
 
-type Tab = "json" | "nested" | "stream" | "catalog" | "visual";
+type Tab = "spec" | "nested" | "stream" | "catalog" | "visual";
 type RenderView = "preview" | "code";
 type MobileView =
-  | "json"
+  | "spec"
   | "nested"
   | "stream"
   | "catalog"
@@ -40,6 +46,79 @@ interface Version {
   status: "generating" | "complete" | "error";
   usage: TokenUsage | null;
   rawLines: string[];
+  format: StreamFormat;
+}
+
+function formatTokens(n: number): string {
+  if (n >= 1000) return `${(n / 1000).toFixed(1).replace(/\.0$/, "")}k`;
+  return String(n);
+}
+
+function PlaygroundControls({
+  format,
+  setFormat,
+  editModes,
+  setEditModes,
+  showClear,
+  onClear,
+}: {
+  format: StreamFormat;
+  setFormat: (f: StreamFormat) => void;
+  editModes: EditMode[];
+  setEditModes: React.Dispatch<React.SetStateAction<EditMode[]>>;
+  showClear: boolean;
+  onClear: () => void;
+}) {
+  return (
+    <div className="flex items-center gap-2">
+      <div className="flex items-center rounded border border-border text-[10px] font-mono overflow-hidden">
+        {(["jsonl", "yaml"] as const).map((f) => (
+          <button
+            key={f}
+            onClick={() => setFormat(f)}
+            className={`px-1.5 py-0.5 transition-colors ${
+              format === f
+                ? "bg-muted text-foreground"
+                : "text-muted-foreground hover:text-foreground"
+            }`}
+          >
+            {f}
+          </button>
+        ))}
+      </div>
+      <div className="flex items-center rounded border border-border text-[10px] font-mono overflow-hidden">
+        {(["patch", "merge", "diff"] as const).map((m) => (
+          <button
+            key={m}
+            onClick={() => {
+              setEditModes((prev) =>
+                prev.includes(m)
+                  ? prev.length > 1
+                    ? prev.filter((x) => x !== m)
+                    : prev
+                  : [...prev, m],
+              );
+            }}
+            className={`px-1.5 py-0.5 transition-colors ${
+              editModes.includes(m)
+                ? "bg-muted text-foreground"
+                : "text-muted-foreground hover:text-foreground"
+            }`}
+          >
+            {m}
+          </button>
+        ))}
+      </div>
+      {showClear && (
+        <button
+          onClick={onClear}
+          className="text-xs text-muted-foreground hover:text-foreground transition-colors"
+        >
+          Clear
+        </button>
+      )}
+    </div>
+  );
 }
 
 /**
@@ -100,13 +179,15 @@ export function Playground() {
     null,
   );
   const [inputValue, setInputValue] = useState("");
-  const [activeTab, setActiveTab] = useState<Tab>("json");
+  const [activeTab, setActiveTab] = useState<Tab>("spec");
   const [catalogSection, setCatalogSection] = useState<
     "components" | "actions"
   >("components");
   const [renderView, setRenderView] = useState<RenderView>("preview");
   const [mobileView, setMobileView] = useState<MobileView>("preview");
   const [versionsSheetOpen, setVersionsSheetOpen] = useState(false);
+  const [format, setFormat] = useState<StreamFormat>("jsonl");
+  const [editModes, setEditModes] = useState<EditMode[]>(["patch"]);
   const inputRef = useRef<HTMLTextAreaElement>(null);
   const mobileInputRef = useRef<HTMLTextAreaElement>(null);
   const versionsEndRef = useRef<HTMLDivElement>(null);
@@ -124,12 +205,13 @@ export function Playground() {
     rawLines: streamRawLines,
     send,
     clear,
-  } = useUIStream({
+  } = usePlaygroundStream({
     api: "/api/generate",
+    format,
+    editModes,
     onError: (err: Error) => {
       console.error("Generation error:", err);
       toast.error(err.message || "Generation failed. Please try again.");
-      // Mark the version as errored
       if (generatingVersionIdRef.current) {
         const erroredVersionId = generatingVersionIdRef.current;
         setVersions((prev) =>
@@ -140,7 +222,7 @@ export function Playground() {
         generatingVersionIdRef.current = null;
       }
     },
-  } as Parameters<typeof useUIStream>[0]);
+  });
 
   // Get the selected version
   const selectedVersion = versions.find((v) => v.id === selectedVersionId);
@@ -215,6 +297,7 @@ export function Playground() {
       status: "generating",
       usage: null,
       rawLines: [],
+      format,
     };
 
     generatingVersionIdRef.current = newVersionId;
@@ -224,7 +307,7 @@ export function Playground() {
 
     // Pass the current tree as context so the API can iterate on it
     await send(inputValue.trim(), { previousSpec: currentTreeRef.current });
-  }, [inputValue, isStreaming, send]);
+  }, [inputValue, isStreaming, send, format]);
 
   const handleKeyDown = useCallback(
     (e: React.KeyboardEvent) => {
@@ -250,9 +333,16 @@ export function Playground() {
     [selectedVersionId, isStreaming],
   );
 
-  const jsonCode = currentTree
-    ? JSON.stringify(currentTree, null, 2)
-    : "// waiting...";
+  const specCode = useMemo(() => {
+    if (!currentTree)
+      return format === "yaml" ? "# waiting..." : "// waiting...";
+    if (format === "yaml") {
+      return yamlStringify(currentTree, { indent: 2 }).trimEnd();
+    }
+    return JSON.stringify(currentTree, null, 2);
+  }, [currentTree, format]);
+
+  const specLang = format === "yaml" ? "yaml" : "json";
 
   const nestedCode = useMemo(() => {
     if (!currentTree || !currentTree.root) return "// waiting...";
@@ -275,7 +365,7 @@ export function Playground() {
       const componentName = element.type;
 
       const propsObj: Record<string, unknown> = {};
-      for (const [k, v] of Object.entries(element.props)) {
+      for (const [k, v] of Object.entries(element.props ?? {})) {
         if (v !== null && v !== undefined) {
           propsObj[k] = v;
         }
@@ -321,6 +411,15 @@ ${jsx}
 }`;
   }, [currentTree]);
 
+  // Determine syntax lang for raw stream based on selected version's format
+  const streamLang = isSelectedVersionGenerating
+    ? format === "yaml"
+      ? "yaml"
+      : "json"
+    : selectedVersion?.format === "yaml"
+      ? "yaml"
+      : "json";
+
   // Chat pane content
   const chatPane = (
     <div className="h-full flex flex-col border-t border-border">
@@ -392,9 +491,15 @@ ${jsx}
                 )}
               </div>
               {version.usage && (
-                <div className="flex items-center gap-2 mt-1 ml-6">
+                <div className="mt-1 ml-6">
                   <span className="text-[10px] font-mono text-muted-foreground/60">
-                    {version.usage.totalTokens.toLocaleString()} tokens
+                    {formatTokens(
+                      version.usage.promptTokens - version.usage.cachedTokens,
+                    )}{" "}
+                    in · {formatTokens(version.usage.completionTokens)} out
+                    {version.usage.cachedTokens > 0
+                      ? ` · ${formatTokens(version.usage.cachedTokens)} cached`
+                      : ""}
                   </span>
                 </div>
               )}
@@ -425,20 +530,18 @@ ${jsx}
           autoFocus
         />
         <div className="flex justify-between items-center mt-2">
-          {versions.length > 0 ? (
-            <button
-              onClick={() => {
-                setVersions([]);
-                setSelectedVersionId(null);
-                clear();
-              }}
-              className="text-xs text-muted-foreground hover:text-foreground transition-colors"
-            >
-              Clear
-            </button>
-          ) : (
-            <div />
-          )}
+          <PlaygroundControls
+            format={format}
+            setFormat={setFormat}
+            editModes={editModes}
+            setEditModes={setEditModes}
+            showClear={versions.length > 0}
+            onClear={() => {
+              setVersions([]);
+              setSelectedVersionId(null);
+              clear();
+            }}
+          />
           {isStreaming ? (
             <button
               onClick={() => clear()}
@@ -492,18 +595,18 @@ ${jsx}
   const copyText =
     activeTab === "stream"
       ? currentRawLines.join("\n")
-      : activeTab === "json"
-        ? jsonCode
+      : activeTab === "spec"
+        ? specCode
         : activeTab === "nested"
           ? nestedCode
           : activeTab === "visual"
-            ? jsonCode
+            ? specCode
             : "";
 
   const codePane = (
     <div className="h-full flex flex-col border-t border-border">
       <div className="border-b border-border px-3 h-9 flex items-center gap-3">
-        {(["json", "visual", "nested", "stream", "catalog"] as const).map(
+        {(["spec", "visual", "nested", "stream", "catalog"] as const).map(
           (tab) => (
             <button
               key={tab}
@@ -514,7 +617,7 @@ ${jsx}
                   : "text-muted-foreground hover:text-foreground"
               }`}
             >
-              {tab}
+              {tab === "spec" ? (format === "yaml" ? "yaml" : "json") : tab}
             </button>
           ),
         )}
@@ -679,7 +782,7 @@ ${jsx}
           currentRawLines.length > 0 ? (
             <CodeBlock
               code={currentRawLines.join("\n")}
-              lang="json"
+              lang={streamLang}
               fillHeight
               hideCopyButton
             />
@@ -691,7 +794,12 @@ ${jsx}
         ) : activeTab === "nested" ? (
           <CodeBlock code={nestedCode} lang="json" fillHeight hideCopyButton />
         ) : (
-          <CodeBlock code={jsonCode} lang="json" fillHeight hideCopyButton />
+          <CodeBlock
+            code={specCode}
+            lang={specLang}
+            fillHeight
+            hideCopyButton
+          />
         )}
       </div>
     </div>
@@ -790,7 +898,7 @@ ${jsx}
               : 0}
           </button>
           {/* Code tabs */}
-          {(["json", "visual", "nested", "stream", "catalog"] as const).map(
+          {(["spec", "visual", "nested", "stream", "catalog"] as const).map(
             (tab) => (
               <button
                 key={tab}
@@ -801,7 +909,7 @@ ${jsx}
                     : "text-muted-foreground hover:text-foreground"
                 }`}
               >
-                {tab}
+                {tab === "spec" ? (format === "yaml" ? "yaml" : "json") : tab}
               </button>
             ),
           )}
@@ -982,7 +1090,7 @@ ${jsx}
             currentRawLines.length > 0 ? (
               <CodeBlock
                 code={currentRawLines.join("\n")}
-                lang="json"
+                lang={streamLang}
                 fillHeight
                 hideCopyButton
               />
@@ -998,8 +1106,13 @@ ${jsx}
               fillHeight
               hideCopyButton
             />
-          ) : mobileView === "json" ? (
-            <CodeBlock code={jsonCode} lang="json" fillHeight hideCopyButton />
+          ) : mobileView === "spec" ? (
+            <CodeBlock
+              code={specCode}
+              lang={specLang}
+              fillHeight
+              hideCopyButton
+            />
           ) : mobileView === "preview" ? (
             currentTree && currentTree.root ? (
               <div className="w-full min-h-full flex items-center justify-center p-6">
@@ -1075,20 +1188,18 @@ ${jsx}
             rows={2}
           />
           <div className="flex justify-between items-center mt-2">
-            {versions.length > 0 ? (
-              <button
-                onClick={() => {
-                  setVersions([]);
-                  setSelectedVersionId(null);
-                  clear();
-                }}
-                className="text-xs text-muted-foreground hover:text-foreground transition-colors"
-              >
-                Clear
-              </button>
-            ) : (
-              <div />
-            )}
+            <PlaygroundControls
+              format={format}
+              setFormat={setFormat}
+              editModes={editModes}
+              setEditModes={setEditModes}
+              showClear={versions.length > 0}
+              onClear={() => {
+                setVersions([]);
+                setSelectedVersionId(null);
+                clear();
+              }}
+            />
             {isStreaming ? (
               <button
                 onClick={() => clear()}
@@ -1165,9 +1276,16 @@ ${jsx}
                     )}
                   </div>
                   {version.usage && (
-                    <div className="flex items-center gap-2 mt-1 ml-6">
+                    <div className="mt-1 ml-6">
                       <span className="text-[10px] font-mono text-muted-foreground/60">
-                        {version.usage.totalTokens.toLocaleString()} tokens
+                        {formatTokens(
+                          version.usage.promptTokens -
+                            version.usage.cachedTokens,
+                        )}{" "}
+                        in · {formatTokens(version.usage.completionTokens)} out
+                        {version.usage.cachedTokens > 0
+                          ? ` · ${formatTokens(version.usage.cachedTokens)} cached`
+                          : ""}
                       </span>
                     </div>
                   )}

apps/web/lib/docs-navigation.ts

@@ -134,12 +134,17 @@ export const docsNavigation: NavSection[] = [
       { title: "@json-render/vue", href: "/docs/api/vue" },
       { title: "@json-render/svelte", href: "/docs/api/svelte" },
       { title: "@json-render/solid", href: "/docs/api/solid" },
+      {
+        title: "@json-render/react-three-fiber",
+        href: "/docs/api/react-three-fiber",
+      },
       { title: "@json-render/codegen", href: "/docs/api/codegen" },
       { title: "@json-render/mcp", href: "/docs/api/mcp" },
       { title: "@json-render/redux", href: "/docs/api/redux" },
       { title: "@json-render/zustand", href: "/docs/api/zustand" },
       { title: "@json-render/jotai", href: "/docs/api/jotai" },
       { title: "@json-render/xstate", href: "/docs/api/xstate" },
+      { title: "@json-render/yaml", href: "/docs/api/yaml" },
     ],
   },
 ];

apps/web/lib/page-titles.ts

@@ -56,7 +56,9 @@ export const PAGE_TITLES: Record<string, string> = {
   "docs/api/redux": "@json-render/redux API",
   "docs/api/zustand": "@json-render/zustand API",
   "docs/api/jotai": "@json-render/jotai API",
+  "docs/api/react-three-fiber": "@json-render/react-three-fiber API",
   "docs/api/xstate": "@json-render/xstate API",
+  "docs/api/yaml": "@json-render/yaml API",
 };
 
 /**

apps/web/lib/spec-patch.ts

@@ -0,0 +1,155 @@
+import type { Spec, JsonPatch } from "@json-render/core";
+import { setByPath, getByPath, removeByPath } from "@json-render/core";
+
+export function setSpecValue(
+  newSpec: Spec,
+  path: string,
+  value: unknown,
+): void {
+  if (path === "/root") {
+    newSpec.root = value as string;
+    return;
+  }
+  if (path === "/state") {
+    newSpec.state = value as Record<string, unknown>;
+    return;
+  }
+  if (path.startsWith("/state/")) {
+    if (!newSpec.state) newSpec.state = {};
+    setByPath(
+      newSpec.state as Record<string, unknown>,
+      path.slice("/state".length),
+      value,
+    );
+    return;
+  }
+  if (path.startsWith("/elements/")) {
+    const pathParts = path.slice("/elements/".length).split("/");
+    const elementKey = pathParts[0];
+    if (!elementKey) return;
+    if (pathParts.length === 1) {
+      if (value == null || typeof value !== "object") return;
+      const el = value as Record<string, unknown>;
+      newSpec.elements[elementKey] = {
+        ...el,
+        type: typeof el.type === "string" ? el.type : "",
+        props: el.props != null && typeof el.props === "object" ? el.props : {},
+        children: Array.isArray(el.children) ? el.children : [],
+      } as Spec["elements"][string];
+    } else {
+      const element = newSpec.elements[elementKey];
+      if (element) {
+        const newElement = { ...element };
+        setByPath(
+          newElement as unknown as Record<string, unknown>,
+          "/" + pathParts.slice(1).join("/"),
+          value,
+        );
+        newSpec.elements[elementKey] = newElement;
+      }
+    }
+  }
+}
+
+export function removeSpecValue(newSpec: Spec, path: string): void {
+  if (path === "/state") {
+    delete newSpec.state;
+    return;
+  }
+  if (path.startsWith("/state/") && newSpec.state) {
+    removeByPath(
+      newSpec.state as Record<string, unknown>,
+      path.slice("/state".length),
+    );
+    return;
+  }
+  if (path.startsWith("/elements/")) {
+    const pathParts = path.slice("/elements/".length).split("/");
+    const elementKey = pathParts[0];
+    if (!elementKey) return;
+    if (pathParts.length === 1) {
+      delete newSpec.elements[elementKey];
+    } else {
+      const element = newSpec.elements[elementKey];
+      if (element) {
+        const newElement = { ...element };
+        removeByPath(
+          newElement as unknown as Record<string, unknown>,
+          "/" + pathParts.slice(1).join("/"),
+        );
+        newSpec.elements[elementKey] = newElement;
+      }
+    }
+  }
+}
+
+export function getSpecValue(spec: Spec, path: string): unknown {
+  if (path === "/root") return spec.root;
+  if (path === "/state") return spec.state;
+  if (path.startsWith("/state/") && spec.state) {
+    return getByPath(
+      spec.state as Record<string, unknown>,
+      path.slice("/state".length),
+    );
+  }
+  return getByPath(spec as unknown as Record<string, unknown>, path);
+}
+
+export function normalizeSpec(spec: Spec): void {
+  if (
+    spec.state === null ||
+    (spec.state !== undefined && typeof spec.state !== "object")
+  ) {
+    spec.state = undefined;
+  }
+
+  for (const key of Object.keys(spec.elements)) {
+    const el = spec.elements[key];
+    if (!el || typeof el !== "object") {
+      delete spec.elements[key];
+      continue;
+    }
+    if (el.props == null || typeof el.props !== "object") {
+      spec.elements[key] = { ...el, props: {} } as Spec["elements"][string];
+    }
+    if (!Array.isArray(spec.elements[key]!.children)) {
+      spec.elements[key] = {
+        ...spec.elements[key]!,
+        children: [],
+      } as Spec["elements"][string];
+    }
+  }
+}
+
+export function applySpecPatch(spec: Spec, patch: JsonPatch): Spec {
+  const newSpec = {
+    ...spec,
+    elements: { ...spec.elements },
+    ...(spec.state ? { state: { ...spec.state } } : {}),
+  };
+  switch (patch.op) {
+    case "add":
+    case "replace":
+      setSpecValue(newSpec, patch.path, patch.value);
+      break;
+    case "remove":
+      removeSpecValue(newSpec, patch.path);
+      break;
+    case "move":
+      if (patch.from) {
+        const moveValue = getSpecValue(newSpec, patch.from);
+        removeSpecValue(newSpec, patch.from);
+        setSpecValue(newSpec, patch.path, moveValue);
+      }
+      break;
+    case "copy":
+      if (patch.from) {
+        setSpecValue(newSpec, patch.path, getSpecValue(newSpec, patch.from));
+      }
+      break;
+    case "test":
+      break;
+  }
+  normalizeSpec(newSpec);
+  return newSpec;
+}

apps/web/lib/use-playground-stream.ts

@@ -0,0 +1,482 @@
+"use client";
+
+import { useState, useCallback, useRef, useEffect } from "react";
+import type { Spec, JsonPatch, EditMode } from "@json-render/core";
+import { deepMergeSpec, diffToPatches } from "@json-render/core";
+import { parse as yamlParse, stringify as yamlStringify } from "yaml";
+import { applyPatch as applyUnifiedDiff } from "diff";
+import {
+  createYamlStreamCompiler,
+  YAML_SPEC_FENCE,
+  YAML_EDIT_FENCE,
+  YAML_PATCH_FENCE,
+  DIFF_FENCE,
+  FENCE_CLOSE,
+} from "@json-render/yaml";
+import { applySpecPatch } from "./spec-patch";
+
+export type StreamFormat = "jsonl" | "yaml";
+
+export interface TokenUsage {
+  promptTokens: number;
+  completionTokens: number;
+  totalTokens: number;
+  cachedTokens: number;
+  cacheWriteTokens: number;
+}
+
+export interface UsePlaygroundStreamOptions {
+  api: string;
+  format: StreamFormat;
+  editModes?: EditMode[];
+  onError?: (error: Error) => void;
+  onComplete?: (spec: Spec) => void;
+}
+
+export interface UsePlaygroundStreamReturn {
+  spec: Spec | null;
+  isStreaming: boolean;
+  error: Error | null;
+  usage: TokenUsage | null;
+  rawLines: string[];
+  send: (prompt: string, context?: Record<string, unknown>) => Promise<void>;
+  clear: () => void;
+}
+
+// ── JSONL helpers ──
+
+type ParsedLine =
+  | { type: "patch"; patch: JsonPatch }
+  | { type: "usage"; usage: TokenUsage }
+  | { type: "json-edit"; mergeObj: Record<string, unknown> }
+  | null;
+
+function parseLine(line: string): ParsedLine {
+  try {
+    const trimmed = line.trim();
+    if (!trimmed || trimmed.startsWith("//")) return null;
+    const parsed = JSON.parse(trimmed);
+    if (parsed.__meta === "usage") {
+      return {
+        type: "usage",
+        usage: {
+          promptTokens: parsed.promptTokens ?? 0,
+          completionTokens: parsed.completionTokens ?? 0,
+          totalTokens: parsed.totalTokens ?? 0,
+          cachedTokens: parsed.cachedTokens ?? 0,
+          cacheWriteTokens: parsed.cacheWriteTokens ?? 0,
+        },
+      };
+    }
+    if (parsed.__json_edit === true) {
+      const mergeObj = { ...parsed };
+      delete mergeObj.__json_edit;
+      return { type: "json-edit", mergeObj };
+    }
+    return { type: "patch", patch: parsed as JsonPatch };
+  } catch {
+    return null;
+  }
+}
+
+type FenceState = "outside" | "yaml-spec" | "yaml-edit" | "yaml-patch" | "diff";
+
+// ── Hook ──
+
+export function usePlaygroundStream({
+  api,
+  format,
+  editModes,
+  onError,
+  onComplete,
+}: UsePlaygroundStreamOptions): UsePlaygroundStreamReturn {
+  const [spec, setSpec] = useState<Spec | null>(null);
+  const [isStreaming, setIsStreaming] = useState(false);
+  const [error, setError] = useState<Error | null>(null);
+  const [usage, setUsage] = useState<TokenUsage | null>(null);
+  const [rawLines, setRawLines] = useState<string[]>([]);
+  const rawLinesRef = useRef<string[]>([]);
+  const abortControllerRef = useRef<AbortController | null>(null);
+
+  const onCompleteRef = useRef(onComplete);
+  onCompleteRef.current = onComplete;
+  const onErrorRef = useRef(onError);
+  onErrorRef.current = onError;
+  const formatRef = useRef(format);
+  formatRef.current = format;
+  const editModesRef = useRef(editModes);
+  editModesRef.current = editModes;
+
+  const clear = useCallback(() => {
+    setSpec(null);
+    setError(null);
+  }, []);
+
+  const send = useCallback(
+    async (prompt: string, context?: Record<string, unknown>) => {
+      abortControllerRef.current = new AbortController();
+
+      setIsStreaming(true);
+      setError(null);
+      setUsage(null);
+      rawLinesRef.current = [];
+      setRawLines([]);
+
+      const previousSpec = context?.previousSpec as Spec | undefined;
+      let currentSpec: Spec =
+        previousSpec && previousSpec.root
+          ? { ...previousSpec, elements: { ...previousSpec.elements } }
+          : { root: "", elements: {} };
+      setSpec(currentSpec);
+
+      try {
+        const response = await fetch(api, {
+          method: "POST",
+          headers: { "Content-Type": "application/json" },
+          body: JSON.stringify({
+            prompt,
+            context,
+            format: formatRef.current,
+            editModes: editModesRef.current,
+          }),
+          signal: abortControllerRef.current.signal,
+        });
+
+        if (!response.ok) {
+          let errorMessage = `HTTP error: ${response.status}`;
+          try {
+            const errorData = await response.json();
+            if (errorData.message) errorMessage = errorData.message;
+            else if (errorData.error) errorMessage = errorData.error;
+          } catch {
+            // use default
+          }
+          throw new Error(errorMessage);
+        }
+
+        const reader = response.body?.getReader();
+        if (!reader) throw new Error("No response body");
+
+        const decoder = new TextDecoder();
+        let buffer = "";
+
+        if (formatRef.current === "yaml") {
+          // ── YAML streaming ──
+          let fenceState: FenceState = "outside";
+          const compiler = createYamlStreamCompiler<Record<string, unknown>>();
+          let yamlEditAccumulated = "";
+          let yamlPatchAccumulated = "";
+          let diffAccumulated = "";
+
+          while (true) {
+            const { done, value } = await reader.read();
+            if (done) break;
+
+            buffer += decoder.decode(value, { stream: true });
+            const lines = buffer.split("\n");
+            buffer = lines.pop() ?? "";
+
+            for (const line of lines) {
+              const trimmed = line.trim();
+
+              // Check for usage metadata (appended after stream)
+              if (trimmed.startsWith("{") && trimmed.includes('"__meta"')) {
+                try {
+                  const parsed = JSON.parse(trimmed);
+                  if (parsed.__meta === "usage") {
+                    setUsage({
+                      promptTokens: parsed.promptTokens ?? 0,
+                      completionTokens: parsed.completionTokens ?? 0,
+                      totalTokens: parsed.totalTokens ?? 0,
+                      cachedTokens: parsed.cachedTokens ?? 0,
+                      cacheWriteTokens: parsed.cacheWriteTokens ?? 0,
+                    });
+                    continue;
+                  }
+                } catch {
+                  // not JSON
+                }
+              }
+
+              rawLinesRef.current.push(line);
+
+              if (fenceState === "outside") {
+                if (
+                  trimmed === YAML_SPEC_FENCE ||
+                  trimmed.startsWith(YAML_SPEC_FENCE + " ")
+                ) {
+                  fenceState = "yaml-spec";
+                  compiler.reset();
+                } else if (
+                  trimmed === YAML_EDIT_FENCE ||
+                  trimmed.startsWith(YAML_EDIT_FENCE + " ")
+                ) {
+                  fenceState = "yaml-edit";
+                  yamlEditAccumulated = "";
+                } else if (
+                  trimmed === YAML_PATCH_FENCE ||
+                  trimmed.startsWith(YAML_PATCH_FENCE + " ")
+                ) {
+                  fenceState = "yaml-patch";
+                  yamlPatchAccumulated = "";
+                } else if (
+                  trimmed === DIFF_FENCE ||
+                  trimmed.startsWith(DIFF_FENCE + " ")
+                ) {
+                  fenceState = "diff";
+                  diffAccumulated = "";
+                }
+              } else if (trimmed === FENCE_CLOSE || trimmed === "````") {
+                if (fenceState === "yaml-spec") {
+                  const { result, newPatches } = compiler.flush();
+                  if (result && typeof result === "object" && result.root) {
+                    for (const patch of newPatches) {
+                      currentSpec = applySpecPatch(currentSpec, patch);
+                    }
+                    setSpec({ ...currentSpec });
+                  }
+                } else if (fenceState === "yaml-edit") {
+                  try {
+                    const editObj = yamlParse(yamlEditAccumulated);
+                    if (editObj && typeof editObj === "object") {
+                      const merged = deepMergeSpec(
+                        currentSpec as unknown as Record<string, unknown>,
+                        editObj as Record<string, unknown>,
+                      );
+                      const patches = diffToPatches(
+                        currentSpec as unknown as Record<string, unknown>,
+                        merged,
+                      );
+                      for (const patch of patches) {
+                        currentSpec = applySpecPatch(currentSpec, patch);
+                      }
+                      setSpec({ ...currentSpec });
+                    }
+                  } catch {
+                    // Invalid YAML edit
+                  }
+                } else if (fenceState === "yaml-patch") {
+                  for (const patchLine of yamlPatchAccumulated.split("\n")) {
+                    const t = patchLine.trim();
+                    if (!t) continue;
+                    try {
+                      const patch = JSON.parse(t) as JsonPatch;
+                      if (patch.op) {
+                        currentSpec = applySpecPatch(currentSpec, patch);
+                      }
+                    } catch {
+                      // Skip invalid JSON lines
+                    }
+                  }
+                  setSpec({ ...currentSpec });
+                } else if (fenceState === "diff") {
+                  try {
+                    const specYaml = yamlStringify(currentSpec, { indent: 2 });
+                    const patched = applyUnifiedDiff(specYaml, diffAccumulated);
+                    if (typeof patched === "string") {
+                      const parsed = yamlParse(patched);
+                      if (parsed && typeof parsed === "object") {
+                        const patches = diffToPatches(
+                          currentSpec as unknown as Record<string, unknown>,
+                          parsed as Record<string, unknown>,
+                        );
+                        for (const patch of patches) {
+                          currentSpec = applySpecPatch(currentSpec, patch);
+                        }
+                        setSpec({ ...currentSpec });
+                      }
+                    }
+                  } catch {
+                    // Diff apply or reparse failed
+                  }
+                }
+                fenceState = "outside";
+              } else if (fenceState === "yaml-spec") {
+                const { newPatches } = compiler.push(line + "\n");
+                if (newPatches.length > 0) {
+                  for (const patch of newPatches) {
+                    currentSpec = applySpecPatch(currentSpec, patch);
+                  }
+                  setSpec({ ...currentSpec });
+                }
+              } else if (fenceState === "yaml-edit") {
+                yamlEditAccumulated += line + "\n";
+              } else if (fenceState === "yaml-patch") {
+                yamlPatchAccumulated += line + "\n";
+              } else if (fenceState === "diff") {
+                diffAccumulated += line + "\n";
+              }
+            }
+            setRawLines([...rawLinesRef.current]);
+          }
+
+          // Process remaining buffer
+          if (buffer.trim()) {
+            const trimmed = buffer.trim();
+            if (trimmed.startsWith("{") && trimmed.includes('"__meta"')) {
+              try {
+                const parsed = JSON.parse(trimmed);
+                if (parsed.__meta === "usage") {
+                  setUsage({
+                    promptTokens: parsed.promptTokens ?? 0,
+                    completionTokens: parsed.completionTokens ?? 0,
+                    totalTokens: parsed.totalTokens ?? 0,
+                    cachedTokens: parsed.cachedTokens ?? 0,
+                    cacheWriteTokens: parsed.cacheWriteTokens ?? 0,
+                  });
+                }
+              } catch {
+                // not JSON
+              }
+            } else if (fenceState === "yaml-spec") {
+              compiler.push(buffer);
+              const { result, newPatches } = compiler.flush();
+              if (result && typeof result === "object" && result.root) {
+                for (const patch of newPatches) {
+                  currentSpec = applySpecPatch(currentSpec, patch);
+                }
+                setSpec({ ...currentSpec });
+              }
+            }
+          }
+        } else {
+          // ── JSONL streaming ──
+          let jsonlDiffState: "outside" | "diff" = "outside";
+          let jsonlDiffAccumulated = "";
+
+          while (true) {
+            const { done, value } = await reader.read();
+            if (done) break;
+
+            buffer += decoder.decode(value, { stream: true });
+            const lines = buffer.split("\n");
+            buffer = lines.pop() ?? "";
+
+            for (const line of lines) {
+              const trimmed = line.trim();
+              if (!trimmed) continue;
+
+              // Diff fence detection within JSONL mode
+              if (jsonlDiffState === "outside") {
+                if (
+                  trimmed === DIFF_FENCE ||
+                  trimmed.startsWith(DIFF_FENCE + " ")
+                ) {
+                  jsonlDiffState = "diff";
+                  jsonlDiffAccumulated = "";
+                  continue;
+                }
+              } else if (
+                jsonlDiffState === "diff" &&
+                (trimmed === FENCE_CLOSE || trimmed === "````")
+              ) {
+                try {
+                  const specJson = JSON.stringify(currentSpec, null, 2);
+                  const patched = applyUnifiedDiff(
+                    specJson,
+                    jsonlDiffAccumulated,
+                  );
+                  if (typeof patched === "string") {
+                    const parsed = JSON.parse(patched);
+                    if (parsed && typeof parsed === "object") {
+                      const patches = diffToPatches(
+                        currentSpec as unknown as Record<string, unknown>,
+                        parsed as Record<string, unknown>,
+                      );
+                      for (const patch of patches) {
+                        currentSpec = applySpecPatch(currentSpec, patch);
+                      }
+                      setSpec({ ...currentSpec });
+                    }
+                  }
+                } catch {
+                  // Diff apply failed
+                }
+                jsonlDiffState = "outside";
+                continue;
+              }
+
+              if (jsonlDiffState === "diff") {
+                jsonlDiffAccumulated += line + "\n";
+                rawLinesRef.current.push(line);
+                continue;
+              }
+
+              // Standard JSONL line parsing
+              const result = parseLine(trimmed);
+              if (!result) continue;
+              if (result.type === "usage") {
+                setUsage(result.usage);
+              } else if (result.type === "json-edit") {
+                const merged = deepMergeSpec(
+                  currentSpec as unknown as Record<string, unknown>,
+                  result.mergeObj,
+                );
+                const patches = diffToPatches(
+                  currentSpec as unknown as Record<string, unknown>,
+                  merged,
+                );
+                for (const patch of patches) {
+                  currentSpec = applySpecPatch(currentSpec, patch);
+                }
+                rawLinesRef.current.push(trimmed);
+                setSpec({ ...currentSpec });
+              } else {
+                rawLinesRef.current.push(trimmed);
+                currentSpec = applySpecPatch(currentSpec, result.patch);
+                setSpec({ ...currentSpec });
+              }
+            }
+            setRawLines([...rawLinesRef.current]);
+          }
+
+          if (buffer.trim()) {
+            const trimmed = buffer.trim();
+            const result = parseLine(trimmed);
+            if (result) {
+              if (result.type === "usage") {
+                setUsage(result.usage);
+              } else if (result.type === "json-edit") {
+                const merged = deepMergeSpec(
+                  currentSpec as unknown as Record<string, unknown>,
+                  result.mergeObj,
+                );
+                const patches = diffToPatches(
+                  currentSpec as unknown as Record<string, unknown>,
+                  merged,
+                );
+                for (const patch of patches) {
+                  currentSpec = applySpecPatch(currentSpec, patch);
+                }
+                rawLinesRef.current.push(trimmed);
+                setSpec({ ...currentSpec });
+              } else {
+                rawLinesRef.current.push(trimmed);
+                currentSpec = applySpecPatch(currentSpec, result.patch);
+                setSpec({ ...currentSpec });
+              }
+            }
+          }
+        }
+
+        onCompleteRef.current?.(currentSpec);
+      } catch (err) {
+        if ((err as Error).name === "AbortError") return;
+        const error = err instanceof Error ? err : new Error(String(err));
+        setError(error);
+        onErrorRef.current?.(error);
+      } finally {
+        setIsStreaming(false);
+      }
+    },
+    [api],
+  );
+
+  useEffect(() => {
+    return () => {
+      abortControllerRef.current?.abort();
+    };
+  }, []);
+
+  return { spec, isStreaming, error, usage, rawLines, send, clear };
+}

apps/web/package.json

@@ -1,6 +1,6 @@
 {
   "name": "web",
-  "version": "0.1.6",
+  "version": "0.1.9",
   "type": "module",
   "private": true,
   "license": "Apache-2.0",
@@ -18,6 +18,7 @@
     "@json-render/codegen": "workspace:*",
     "@json-render/core": "workspace:*",
     "@json-render/react": "workspace:*",
+    "@json-render/yaml": "workspace:*",
     "@mdx-js/loader": "^3.1.1",
     "@mdx-js/mdx": "^3.1.1",
     "@mdx-js/react": "^3.1.1",
@@ -34,9 +35,9 @@
     "bash-tool": "1.3.14",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
+    "diff": "^8.0.3",
     "embla-carousel-react": "^8.6.0",
     "geist": "1.7.0",
-    "just-bash": "2.9.6",
     "lucide-react": "^0.562.0",
     "next": "16.1.1",
     "next-themes": "^0.4.6",
@@ -51,6 +52,7 @@
     "tailwind-merge": "^3.4.0",
     "unist-util-visit": "5.1.0",
     "vaul": "^1.1.2",
+    "yaml": "^2.8.2",
     "zod": "^4.3.6"
   },
   "devDependencies": {

examples/chat/CHANGELOG.md

@@ -1,5 +1,32 @@
 # example-chat
 
+## 0.1.9
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/react@0.14.1
+  - @json-render/shadcn@0.14.1
+
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/react@0.14.0
+  - @json-render/shadcn@0.14.0
+
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/react@0.13.0
+  - @json-render/shadcn@0.13.0
+
 ## 0.1.6
 
 ### Patch Changes

examples/chat/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-chat",
-  "version": "0.1.6",
+  "version": "0.1.9",
   "type": "module",
   "private": true,
   "scripts": {

examples/dashboard/CHANGELOG.md

@@ -1,5 +1,32 @@
 # example-dashboard
 
+## 0.1.9
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/codegen@0.14.1
+  - @json-render/react@0.14.1
+
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/codegen@0.14.0
+  - @json-render/react@0.14.0
+
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/codegen@0.13.0
+  - @json-render/react@0.13.0
+
 ## 0.1.6
 
 ### Patch Changes

examples/dashboard/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-dashboard",
-  "version": "0.1.6",
+  "version": "0.1.9",
   "type": "module",
   "private": true,
   "scripts": {

examples/image/CHANGELOG.md

@@ -1,5 +1,29 @@
 # example-image
 
+## 0.1.6
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/image@0.14.1
+
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/image@0.14.0
+
+## 0.1.4
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/image@0.13.0
+
 ## 0.1.3
 
 ### Patch Changes

examples/image/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-image",
-  "version": "0.1.3",
+  "version": "0.1.6",
   "type": "module",
   "private": true,
   "scripts": {

examples/mcp/CHANGELOG.md

@@ -1,5 +1,35 @@
 # example-mcp
 
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/mcp@0.14.1
+  - @json-render/react@0.14.1
+  - @json-render/shadcn@0.14.1
+
+## 0.1.4
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/mcp@0.14.0
+  - @json-render/react@0.14.0
+  - @json-render/shadcn@0.14.0
+
+## 0.1.3
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/mcp@0.13.0
+  - @json-render/react@0.13.0
+  - @json-render/shadcn@0.13.0
+
 ## 0.1.2
 
 ### Patch Changes

examples/mcp/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-mcp",
-  "version": "0.1.2",
+  "version": "0.1.5",
   "type": "module",
   "private": true,
   "scripts": {

examples/no-ai/CHANGELOG.md

@@ -1,5 +1,32 @@
 # example-no-ai
 
+## 0.1.9
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/react@0.14.1
+  - @json-render/shadcn@0.14.1
+
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/react@0.14.0
+  - @json-render/shadcn@0.14.0
+
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/react@0.13.0
+  - @json-render/shadcn@0.13.0
+
 ## 0.1.6
 
 ### Patch Changes

examples/no-ai/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-no-ai",
-  "version": "0.1.6",
+  "version": "0.1.9",
   "type": "module",
   "private": true,
   "scripts": {

examples/react-email/CHANGELOG.md

@@ -1,5 +1,29 @@
 # example-react-email
 
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/react-email@0.14.1
+
+## 0.1.4
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/react-email@0.14.0
+
+## 0.1.3
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/react-email@0.13.0
+
 ## 0.1.2
 
 ### Patch Changes

examples/react-email/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-react-email",
-  "version": "0.1.2",
+  "version": "0.1.5",
   "type": "module",
   "private": true,
   "scripts": {

examples/react-native/CHANGELOG.md

@@ -1,5 +1,29 @@
 # example-react-native
 
+## 0.1.9
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/react-native@0.14.1
+
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/react-native@0.14.0
+
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/react-native@0.13.0
+
 ## 0.1.6
 
 ### Patch Changes

examples/react-native/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-react-native",
-  "version": "0.1.6",
+  "version": "0.1.9",
   "private": true,
   "main": "expo-router/entry",
   "scripts": {

examples/react-pdf/CHANGELOG.md

@@ -1,5 +1,29 @@
 # example-react-pdf
 
+## 0.1.9
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/react-pdf@0.14.1
+
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/react-pdf@0.14.0
+
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/react-pdf@0.13.0
+
 ## 0.1.6
 
 ### Patch Changes

examples/react-pdf/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-react-pdf",
-  "version": "0.1.6",
+  "version": "0.1.9",
   "type": "module",
   "private": true,
   "scripts": {

examples/react-three-fiber/CHANGELOG.md

@@ -0,0 +1,28 @@
+# example-react-three-fiber
+
+## 0.1.9
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/react@0.14.1
+  - @json-render/react-three-fiber@0.14.1
+
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/react@0.14.0
+  - @json-render/react-three-fiber@0.14.0
+
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/react-three-fiber@0.13.0
+  - @json-render/react@0.13.0

examples/react-three-fiber/app/layout.tsx

@@ -0,0 +1,20 @@
+import type { Metadata } from "next";
+
+export const metadata: Metadata = {
+  title: "json-render React Three Fiber Example",
+  description: "3D scenes from JSON specs with @json-render/react-three-fiber",
+};
+
+export default function RootLayout({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  return (
+    <html lang="en">
+      <body style={{ margin: 0, fontFamily: "system-ui, sans-serif" }}>
+        {children}
+      </body>
+    </html>
+  );
+}

examples/react-three-fiber/app/page.tsx

@@ -0,0 +1,238 @@
+"use client";
+
+import { useState } from "react";
+import { defineCatalog } from "@json-render/core";
+import type { ComputedFunction } from "@json-render/core";
+import { schema, defineRegistry } from "@json-render/react";
+import {
+  threeComponentDefinitions,
+  threeComponents,
+  ThreeCanvas,
+} from "@json-render/react-three-fiber";
+import { scenes } from "./scenes";
+
+const catalog = defineCatalog(schema, {
+  components: {
+    ...threeComponentDefinitions,
+  },
+  actions: {},
+});
+
+const { registry } = defineRegistry(catalog, {
+  components: {
+    ...threeComponents,
+  },
+});
+
+function num(v: unknown, fallback: number): number {
+  return typeof v === "number" ? v : fallback;
+}
+
+const computedFunctions: Record<string, ComputedFunction> = {
+  halfHeight: (a) => num(a.h, 1) / 2,
+
+  helixX: (a) => {
+    const angle =
+      (num(a.i, 0) / num(a.count, 40)) * num(a.turns, 3) * 2 * Math.PI +
+      num(a.strand, 0) * Math.PI;
+    return num(a.radius, 1.8) * Math.cos(angle);
+  },
+  helixY: (a) => num(a.i, 0) * num(a.spacing, 0.3) + num(a.offset, -6),
+  helixZ: (a) => {
+    const angle =
+      (num(a.i, 0) / num(a.count, 40)) * num(a.turns, 3) * 2 * Math.PI +
+      num(a.strand, 0) * Math.PI;
+    return num(a.radius, 1.8) * Math.sin(angle);
+  },
+  helixHue: (a) => {
+    const t = num(a.i, 0) / num(a.count, 40);
+    return `hsl(${Math.round(t * 270 + 180)}, 85%, 60%)`;
+  },
+
+  spiralX: (a) => {
+    const t = num(a.i, 0) / num(a.count, 60);
+    const r = 0.5 + t * num(a.maxRadius, 7);
+    const angle = t * num(a.turns, 4) * 2 * Math.PI;
+    return r * Math.cos(angle);
+  },
+  spiralZ: (a) => {
+    const t = num(a.i, 0) / num(a.count, 60);
+    const r = 0.5 + t * num(a.maxRadius, 7);
+    const angle = t * num(a.turns, 4) * 2 * Math.PI;
+    return r * Math.sin(angle);
+  },
+  spiralY: (a) => {
+    const i = num(a.i, 0);
+    return Math.sin(i * 1.7) * 0.4;
+  },
+  spiralScale: (a) => {
+    const t = num(a.i, 0) / num(a.count, 60);
+    return 0.08 + (1 - t) * 0.25;
+  },
+  spiralEmissive: (a) => {
+    const t = num(a.i, 0) / num(a.count, 60);
+    return Math.max(0, 1 - t * 1.5);
+  },
+
+  circleX: (a) => {
+    const angle = (num(a.i, 0) / num(a.count, 8)) * 2 * Math.PI;
+    return num(a.radius, 3) * Math.cos(angle);
+  },
+  circleZ: (a) => {
+    const angle = (num(a.i, 0) / num(a.count, 8)) * 2 * Math.PI;
+    return num(a.radius, 3) * Math.sin(angle);
+  },
+  circleY: (a) => {
+    const angle = (num(a.i, 0) / num(a.count, 8)) * 2 * Math.PI;
+    return Math.sin(angle * num(a.freq, 3)) * num(a.amp, 0.3);
+  },
+  circleAngle: (a) => {
+    return (num(a.i, 0) / num(a.count, 8)) * 2 * Math.PI;
+  },
+  circleHue: (a) => {
+    const t = num(a.i, 0) / num(a.count, 8);
+    return `hsl(${Math.round(t * 360)}, ${num(a.sat, 70)}%, ${num(a.lit, 80)}%)`;
+  },
+};
+
+function highlightJson(json: string): string {
+  return json.replace(
+    /("(?:\\.|[^"\\])*")\s*(:)|("(?:\\.|[^"\\])*")|([-+]?\d+(?:\.\d+)?(?:[eE][+-]?\d+)?)|(\btrue\b|\bfalse\b|\bnull\b)|([{}[\]:,])/g,
+    (_, key, colon, str, num, lit, punct) => {
+      if (key) return `<span style="color:#FF4D8D">${key}</span>${colon}`;
+      if (str) return `<span style="color:#00CA50">${str}</span>`;
+      if (num) return `<span style="color:#47A8FF">${num}</span>`;
+      if (lit) return `<span style="color:#47A8FF">${lit}</span>`;
+      if (punct) return `<span style="color:#666">${punct}</span>`;
+      return _;
+    },
+  );
+}
+
+const LIST_WIDTH = 220;
+const JSON_WIDTH = 380;
+const HEADER_HEIGHT = 40;
+
+const headerStyle: React.CSSProperties = {
+  height: HEADER_HEIGHT,
+  display: "flex",
+  alignItems: "center",
+  padding: "0 16px",
+  fontSize: 11,
+  fontWeight: 600,
+  color: "#555",
+  letterSpacing: "0.08em",
+  textTransform: "uppercase",
+  fontFamily: "ui-monospace, monospace",
+  borderBottom: "1px solid #1e1e1e",
+  flexShrink: 0,
+  whiteSpace: "nowrap",
+  overflow: "hidden",
+  textOverflow: "ellipsis",
+  boxSizing: "border-box",
+};
+
+export default function Page() {
+  const [selectedIndex, setSelectedIndex] = useState(0);
+  const selected = scenes[selectedIndex]!;
+
+  return (
+    <div style={{ height: "100vh", display: "flex", background: "#0a0a0a" }}>
+      <div
+        style={{
+          width: LIST_WIDTH,
+          flexShrink: 0,
+          display: "flex",
+          flexDirection: "column",
+          borderRight: "1px solid #1e1e1e",
+          background: "#0f0f0f",
+        }}
+      >
+        <div style={headerStyle}>Scenes</div>
+        <div style={{ flex: 1, overflowY: "auto", padding: "6px 0" }}>
+          {scenes.map((scene, i) => (
+            <button
+              key={scene.name}
+              onClick={() => setSelectedIndex(i)}
+              style={{
+                display: "block",
+                width: "100%",
+                padding: "8px 16px",
+                fontSize: 13,
+                border: "none",
+                textAlign: "left",
+                background:
+                  i === selectedIndex
+                    ? "rgba(255,255,255,0.08)"
+                    : "transparent",
+                color: i === selectedIndex ? "#fff" : "#888",
+                fontWeight: i === selectedIndex ? 500 : 400,
+                cursor: "pointer",
+                borderLeft:
+                  i === selectedIndex
+                    ? "2px solid #fff"
+                    : "2px solid transparent",
+                fontFamily: "inherit",
+              }}
+            >
+              {scene.name}
+            </button>
+          ))}
+        </div>
+      </div>
+
+      <div
+        style={{
+          flex: 1,
+          display: "flex",
+          flexDirection: "column",
+          minWidth: 0,
+        }}
+      >
+        <div style={headerStyle}>{selected.description}</div>
+        <div style={{ flex: 1, background: "#000", position: "relative" }}>
+          <ThreeCanvas
+            key={selectedIndex}
+            spec={selected.spec}
+            registry={registry}
+            functions={computedFunctions}
+            shadows
+            camera={{ position: [0, 0, 5], fov: 50 }}
+            style={{ width: "100%", height: "100%" }}
+          />
+        </div>
+      </div>
+
+      <div
+        style={{
+          width: JSON_WIDTH,
+          flexShrink: 0,
+          display: "flex",
+          flexDirection: "column",
+          borderLeft: "1px solid #1e1e1e",
+          background: "#0d0d0d",
+        }}
+      >
+        <div style={headerStyle}>Spec JSON</div>
+        <pre
+          style={{
+            flex: 1,
+            margin: 0,
+            padding: 14,
+            overflowY: "auto",
+            overflowX: "auto",
+            fontSize: 11,
+            lineHeight: 1.6,
+            fontFamily:
+              "ui-monospace, 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, monospace",
+            color: "#EDEDED",
+            tabSize: 2,
+          }}
+          dangerouslySetInnerHTML={{
+            __html: highlightJson(JSON.stringify(selected.spec, null, 2)),
+          }}
+        />
+      </div>
+    </div>
+  );
+}

examples/react-three-fiber/app/scenes/_helpers.ts

@@ -0,0 +1,9 @@
+import type { Spec } from "@json-render/core";
+
+export type Scene = { name: string; description: string; spec: Spec };
+
+export const PI = Math.PI;
+
+export function range(n: number) {
+  return Array.from({ length: n }, (_, i) => ({ i }));
+}

examples/react-three-fiber/app/scenes/clockwork-orrery.ts

@@ -0,0 +1,474 @@
+import type { Scene } from "./_helpers";
+
+export const clockworkOrrery: Scene = {
+  name: "Clockwork Orrery",
+  description:
+    "Interlocking brass/gold rings spinning at different tilts and speeds with orbiting metallic planets. Like the inside of a celestial clockwork mechanism.",
+  spec: {
+    root: "scene",
+    elements: {
+      scene: {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "cam",
+          "env",
+          "ambient",
+          "key",
+          "warm",
+          "accent",
+          "center",
+          "ring-spin-0",
+          "ring-spin-1",
+          "ring-spin-2",
+          "ring-spin-3",
+          "planet-orbit-0",
+          "planet-orbit-1",
+          "planet-orbit-2",
+          "sparkles",
+          "post",
+          "controls",
+        ],
+      },
+      cam: {
+        type: "PerspectiveCamera",
+        props: {
+          position: [0, 3, 8],
+          fov: 50,
+          makeDefault: true,
+        },
+        children: [],
+      },
+      env: {
+        type: "Environment",
+        props: {
+          preset: "dawn",
+          background: true,
+          blur: 1,
+          intensity: 0.5,
+        },
+        children: [],
+      },
+      ambient: {
+        type: "AmbientLight",
+        props: { color: "#332200", intensity: 0.4 },
+        children: [],
+      },
+      key: {
+        type: "DirectionalLight",
+        props: {
+          position: [5, 10, 5],
+          rotation: null,
+          scale: null,
+          color: "#ffddaa",
+          intensity: 2,
+          castShadow: true,
+        },
+        children: [],
+      },
+      warm: {
+        type: "PointLight",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          color: "#ffaa44",
+          intensity: 30,
+          distance: 15,
+          decay: 2,
+          castShadow: false,
+        },
+        children: [],
+      },
+      accent: {
+        type: "PointLight",
+        props: {
+          position: [-4, 3, -4],
+          rotation: null,
+          scale: null,
+          color: "#ffcc88",
+          intensity: 15,
+          distance: 15,
+          decay: 2,
+          castShadow: false,
+        },
+        children: [],
+      },
+      center: {
+        type: "Float",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 0.5,
+          rotationIntensity: 0.1,
+          floatIntensity: 0.2,
+          enabled: true,
+        },
+        children: ["center-sphere"],
+      },
+      "center-sphere": {
+        type: "GlassSphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          radius: 0.5,
+          widthSegments: 32,
+          heightSegments: 16,
+          color: "#ffddaa",
+          transmission: 1,
+          thickness: 0.8,
+          roughness: 0,
+          chromaticAberration: 0.1,
+          ior: 1.8,
+          distortion: 0.05,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 10,
+          resolution: 256,
+        },
+        children: [],
+      },
+      "ring-spin-0": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: [0.3, 0, 0.8],
+          scale: null,
+          speed: 1.2,
+          axis: "y",
+        },
+        children: ["ring-torus-0"],
+      },
+      "ring-torus-0": {
+        type: "Torus",
+        props: {
+          position: null,
+          rotation: [1.5708, 0, 0],
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#ffcc44",
+            metalness: 0.95,
+            roughness: 0.1,
+            emissive: "#cc9900",
+            emissiveIntensity: 0.4,
+            opacity: null,
+            transparent: null,
+            wireframe: null,
+          },
+          radius: 2,
+          tube: 0.04,
+          radialSegments: null,
+          tubularSegments: 128,
+        },
+        children: [],
+      },
+      "ring-spin-1": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: [0.9, 0, -0.2],
+          scale: null,
+          speed: -0.7,
+          axis: "y",
+        },
+        children: ["ring-torus-1"],
+      },
+      "ring-torus-1": {
+        type: "Torus",
+        props: {
+          position: null,
+          rotation: [1.5708, 0, 0],
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#cc8833",
+            metalness: 0.95,
+            roughness: 0.1,
+            emissive: "#aa6622",
+            emissiveIntensity: 0.3,
+            opacity: null,
+            transparent: null,
+            wireframe: null,
+          },
+          radius: 3.2,
+          tube: 0.035,
+          radialSegments: null,
+          tubularSegments: 128,
+        },
+        children: [],
+      },
+      "ring-spin-2": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: [-0.4, 0, 0.5],
+          scale: null,
+          speed: 0.4,
+          axis: "y",
+        },
+        children: ["ring-torus-2"],
+      },
+      "ring-torus-2": {
+        type: "Torus",
+        props: {
+          position: null,
+          rotation: [1.5708, 0, 0],
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#bb9944",
+            metalness: 0.95,
+            roughness: 0.1,
+            emissive: "#886622",
+            emissiveIntensity: 0.25,
+            opacity: null,
+            transparent: null,
+            wireframe: null,
+          },
+          radius: 4.5,
+          tube: 0.03,
+          radialSegments: null,
+          tubularSegments: 128,
+        },
+        children: [],
+      },
+      "ring-spin-3": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: [0.1, 0, -0.1],
+          scale: null,
+          speed: -0.2,
+          axis: "y",
+        },
+        children: ["ring-torus-3"],
+      },
+      "ring-torus-3": {
+        type: "Torus",
+        props: {
+          position: null,
+          rotation: [1.5708, 0, 0],
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#997744",
+            metalness: 0.95,
+            roughness: 0.1,
+            emissive: "#664422",
+            emissiveIntensity: 0.15,
+            opacity: null,
+            transparent: null,
+            wireframe: null,
+          },
+          radius: 6,
+          tube: 0.025,
+          radialSegments: null,
+          tubularSegments: 128,
+        },
+        children: [],
+      },
+      "planet-orbit-0": {
+        type: "Orbit",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          speed: 0.6,
+          radius: 2.5,
+          tilt: 0.3,
+        },
+        children: ["planet-spin-0"],
+      },
+      "planet-spin-0": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 3,
+          axis: "y",
+        },
+        children: ["planet-sphere-0"],
+      },
+      "planet-sphere-0": {
+        type: "Sphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#ffffff",
+            metalness: 1,
+            roughness: 0.02,
+            emissive: "#ffffff",
+            emissiveIntensity: 0.2,
+            opacity: null,
+            transparent: null,
+            wireframe: null,
+          },
+          radius: 0.2,
+          widthSegments: 32,
+          heightSegments: 16,
+        },
+        children: [],
+      },
+      "planet-orbit-1": {
+        type: "Orbit",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          speed: -0.9,
+          radius: 3.8,
+          tilt: 0.8,
+        },
+        children: ["planet-spin-1"],
+      },
+      "planet-spin-1": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: -2,
+          axis: "x",
+        },
+        children: ["planet-sphere-1"],
+      },
+      "planet-sphere-1": {
+        type: "Sphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#ffcc88",
+            metalness: 0.8,
+            roughness: 0.15,
+            emissive: "#ffcc88",
+            emissiveIntensity: 0.2,
+            opacity: null,
+            transparent: null,
+            wireframe: null,
+          },
+          radius: 0.15,
+          widthSegments: 32,
+          heightSegments: 16,
+        },
+        children: [],
+      },
+      "planet-orbit-2": {
+        type: "Orbit",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          speed: 0.35,
+          radius: 5.2,
+          tilt: -0.5,
+        },
+        children: ["planet-spin-2"],
+      },
+      "planet-spin-2": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 1.5,
+          axis: "z",
+        },
+        children: ["planet-sphere-2"],
+      },
+      "planet-sphere-2": {
+        type: "Sphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#ccaa66",
+            metalness: 0.9,
+            roughness: 0.05,
+            emissive: "#ccaa66",
+            emissiveIntensity: 0.2,
+            opacity: null,
+            transparent: null,
+            wireframe: null,
+          },
+          radius: 0.18,
+          widthSegments: 32,
+          heightSegments: 16,
+        },
+        children: [],
+      },
+      sparkles: {
+        type: "Sparkles",
+        props: {
+          position: null,
+          rotation: null,
+          scale: [14, 10, 14],
+          count: 150,
+          speed: 0.15,
+          opacity: 0.3,
+          color: "#ffcc66",
+          size: 1,
+          noise: 2,
+        },
+        children: [],
+      },
+      post: {
+        type: "EffectComposer",
+        props: { enabled: true, multisampling: 8 },
+        children: ["bloom", "vignette"],
+      },
+      bloom: {
+        type: "Bloom",
+        props: {
+          intensity: 1.2,
+          luminanceThreshold: 0.2,
+          luminanceSmoothing: null,
+          mipmapBlur: true,
+        },
+        children: [],
+      },
+      vignette: {
+        type: "Vignette",
+        props: { offset: 0.5, darkness: 0.5 },
+        children: [],
+      },
+      controls: {
+        type: "OrbitControls",
+        props: {
+          enableDamping: true,
+          dampingFactor: null,
+          enableZoom: true,
+          enablePan: null,
+          enableRotate: true,
+          minDistance: 4,
+          maxDistance: 18,
+          minPolarAngle: 0.3,
+          maxPolarAngle: 1.5,
+          autoRotate: true,
+          autoRotateSpeed: 0.3,
+        },
+        children: [],
+      },
+    },
+  },
+};

examples/react-three-fiber/app/scenes/deep-sea-abyss.ts

@@ -0,0 +1,692 @@
+import type { Scene } from "./_helpers";
+
+export const deepSeaAbyss: Scene = {
+  name: "Deep Sea Abyss",
+  description:
+    "Bioluminescent deep ocean. Pitch black with glowing jellyfish-like creatures.",
+  spec: {
+    root: "scene",
+    elements: {
+      scene: {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "cam",
+          "env",
+          "fog",
+          "ambient",
+          "jelly-1-pulse",
+          "jelly-2-pulse",
+          "jelly-3-pulse",
+          "light-1",
+          "light-2",
+          "light-3",
+          "tentacles-1",
+          "tentacles-2",
+          "tentacles-3",
+          "sparkles-1",
+          "sparkles-2",
+          "controls",
+        ],
+      },
+      cam: {
+        type: "PerspectiveCamera",
+        props: {
+          position: [0, 1, 6],
+          fov: 55,
+          makeDefault: true,
+        },
+        children: [],
+      },
+      env: {
+        type: "Environment",
+        props: {
+          preset: "night",
+          background: false,
+          blur: 1,
+          intensity: 0.05,
+        },
+        children: [],
+      },
+      fog: {
+        type: "Fog",
+        props: { color: "#000510", near: 2, far: 18 },
+        children: [],
+      },
+      ambient: {
+        type: "AmbientLight",
+        props: { color: "#001133", intensity: 0.15 },
+        children: [],
+      },
+      "jelly-1-pulse": {
+        type: "Pulse",
+        props: {
+          position: [0, 1, 0],
+          rotation: null,
+          scale: null,
+          speed: 0.6,
+          min: 0.85,
+          max: 1.15,
+        },
+        children: ["jelly-1-spin"],
+      },
+      "jelly-1-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 0.2,
+          axis: "y",
+        },
+        children: ["jelly-1-body"],
+      },
+      "jelly-1-body": {
+        type: "DistortSphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 1,
+          widthSegments: 64,
+          heightSegments: 32,
+          color: "#00ccff",
+          speed: 2,
+          distort: 0.5,
+          metalness: 0,
+          roughness: 0.2,
+        },
+        children: [],
+      },
+      "jelly-2-pulse": {
+        type: "Pulse",
+        props: {
+          position: [-4, -1, -3],
+          rotation: null,
+          scale: null,
+          speed: 0.8,
+          min: 0.8,
+          max: 1.2,
+        },
+        children: ["jelly-2-spin"],
+      },
+      "jelly-2-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: -0.3,
+          axis: "y",
+        },
+        children: ["jelly-2-body"],
+      },
+      "jelly-2-body": {
+        type: "DistortSphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.7,
+          widthSegments: 64,
+          heightSegments: 32,
+          color: "#cc44ff",
+          speed: 2.5,
+          distort: 0.6,
+          metalness: 0,
+          roughness: 0.2,
+        },
+        children: [],
+      },
+      "jelly-3-pulse": {
+        type: "Pulse",
+        props: {
+          position: [3, 0.5, -5],
+          rotation: null,
+          scale: null,
+          speed: 0.5,
+          min: 0.9,
+          max: 1.1,
+        },
+        children: ["jelly-3-spin"],
+      },
+      "jelly-3-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 0.15,
+          axis: "y",
+        },
+        children: ["jelly-3-body"],
+      },
+      "jelly-3-body": {
+        type: "DistortSphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.5,
+          widthSegments: 64,
+          heightSegments: 32,
+          color: "#ff44aa",
+          speed: 1.5,
+          distort: 0.4,
+          metalness: 0,
+          roughness: 0.3,
+        },
+        children: [],
+      },
+      "light-1": {
+        type: "PointLight",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          color: "#00ccff",
+          intensity: 20,
+          distance: 12,
+          decay: 2,
+          castShadow: null,
+        },
+        children: [],
+      },
+      "light-2": {
+        type: "PointLight",
+        props: {
+          position: [-4, -1, -3],
+          rotation: null,
+          scale: null,
+          color: "#cc44ff",
+          intensity: 15,
+          distance: 10,
+          decay: 2,
+          castShadow: null,
+        },
+        children: [],
+      },
+      "light-3": {
+        type: "PointLight",
+        props: {
+          position: [3, 0.5, -5],
+          rotation: null,
+          scale: null,
+          color: "#ff44aa",
+          intensity: 10,
+          distance: 8,
+          decay: 2,
+          castShadow: null,
+        },
+        children: [],
+      },
+      "tentacles-1": {
+        type: "Float",
+        props: {
+          position: [0, -1, 0],
+          rotation: null,
+          scale: null,
+          speed: 0.3,
+          rotationIntensity: 0.5,
+          floatIntensity: 0.8,
+          enabled: true,
+        },
+        children: ["t1-s1", "t1-s2", "t1-s3", "t1-s4", "t1-s5", "t1-s6"],
+      },
+      "t1-s1": {
+        type: "GlassSphere",
+        props: {
+          position: [0.3, -0.5, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.12,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#00ccff",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "t1-s2": {
+        type: "GlassSphere",
+        props: {
+          position: [-0.2, -1.2, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.1,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#00ccff",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "t1-s3": {
+        type: "GlassSphere",
+        props: {
+          position: [0.4, -1.9, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.08,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#00ccff",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "t1-s4": {
+        type: "GlassSphere",
+        props: {
+          position: [-0.3, -2.5, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.07,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#00ccff",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "t1-s5": {
+        type: "GlassSphere",
+        props: {
+          position: [0.1, -3.0, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.06,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#00ccff",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "t1-s6": {
+        type: "GlassSphere",
+        props: {
+          position: [-0.1, -3.4, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.05,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#00ccff",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "tentacles-2": {
+        type: "Float",
+        props: {
+          position: [-4, -2.5, -3],
+          rotation: null,
+          scale: null,
+          speed: 0.4,
+          rotationIntensity: 0.5,
+          floatIntensity: 0.8,
+          enabled: true,
+        },
+        children: ["t2-s1", "t2-s2", "t2-s3", "t2-s4", "t2-s5"],
+      },
+      "t2-s1": {
+        type: "GlassSphere",
+        props: {
+          position: [0.3, -0.5, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.1,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#cc44ff",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "t2-s2": {
+        type: "GlassSphere",
+        props: {
+          position: [-0.2, -1.1, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.08,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#cc44ff",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "t2-s3": {
+        type: "GlassSphere",
+        props: {
+          position: [0.4, -1.7, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.06,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#cc44ff",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "t2-s4": {
+        type: "GlassSphere",
+        props: {
+          position: [-0.3, -2.2, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.05,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#cc44ff",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "t2-s5": {
+        type: "GlassSphere",
+        props: {
+          position: [0.1, -2.6, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.05,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#cc44ff",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "tentacles-3": {
+        type: "Float",
+        props: {
+          position: [3, -1, -5],
+          rotation: null,
+          scale: null,
+          speed: 0.35,
+          rotationIntensity: 0.5,
+          floatIntensity: 0.8,
+          enabled: true,
+        },
+        children: ["t3-s1", "t3-s2", "t3-s3", "t3-s4"],
+      },
+      "t3-s1": {
+        type: "GlassSphere",
+        props: {
+          position: [0.3, -0.5, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.09,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#ff44aa",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "t3-s2": {
+        type: "GlassSphere",
+        props: {
+          position: [-0.2, -1.0, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.07,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#ff44aa",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "t3-s3": {
+        type: "GlassSphere",
+        props: {
+          position: [0.4, -1.5, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.06,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#ff44aa",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "t3-s4": {
+        type: "GlassSphere",
+        props: {
+          position: [-0.1, -1.9, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.05,
+          widthSegments: 16,
+          heightSegments: 8,
+          color: "#ff44aa",
+          transmission: 0.9,
+          thickness: 0.3,
+          roughness: 0.1,
+          chromaticAberration: 0.1,
+          ior: 1.5,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      "sparkles-1": {
+        type: "Sparkles",
+        props: {
+          position: [0, 0, -3],
+          rotation: null,
+          scale: [15, 10, 15],
+          count: 300,
+          speed: 0.1,
+          opacity: 0.4,
+          color: "#00aaff",
+          size: 1,
+          noise: 3,
+        },
+        children: [],
+      },
+      "sparkles-2": {
+        type: "Sparkles",
+        props: {
+          position: [0, -2, 0],
+          rotation: null,
+          scale: [12, 6, 12],
+          count: 150,
+          speed: 0.05,
+          opacity: 0.2,
+          color: "#8844ff",
+          size: 0.8,
+          noise: 2,
+        },
+        children: [],
+      },
+      controls: {
+        type: "OrbitControls",
+        props: {
+          enableDamping: true,
+          dampingFactor: null,
+          enableZoom: true,
+          enablePan: null,
+          enableRotate: true,
+          minDistance: 3,
+          maxDistance: 18,
+          minPolarAngle: null,
+          maxPolarAngle: null,
+          autoRotate: true,
+          autoRotateSpeed: 0.15,
+        },
+        children: [],
+      },
+    },
+  },
+};

examples/react-three-fiber/app/scenes/floating-islands.ts

@@ -0,0 +1,940 @@
+import { PI } from "./_helpers";
+import type { Scene } from "./_helpers";
+
+export const floatingIslands: Scene = {
+  name: "Floating Islands",
+  description:
+    "Sky, clouds, islands with trees and bridges floating in sunset light",
+  spec: {
+    root: "scene",
+    elements: {
+      scene: {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "cam",
+          "sky",
+          "ambient",
+          "sun",
+          "clouds",
+          "island-main-float",
+          "island-left-float",
+          "island-right-float",
+          "island-far-float",
+          "island-tiny1-float",
+          "island-tiny2-float",
+          "bridge-1",
+          "bridge-2",
+          "sparkles",
+          "controls",
+        ],
+      },
+      cam: {
+        type: "PerspectiveCamera",
+        props: {
+          position: [8, 6, 14],
+          rotation: null,
+          scale: null,
+          fov: 50,
+          near: 0.1,
+          far: 500,
+          makeDefault: true,
+        },
+        children: [],
+      },
+      sky: {
+        type: "Environment",
+        props: {
+          preset: "dawn",
+          background: true,
+          blur: 0.8,
+          intensity: 0.5,
+        },
+        children: [],
+      },
+      ambient: {
+        type: "AmbientLight",
+        props: { color: "#ffd4a0", intensity: 0.5 },
+        children: [],
+      },
+      sun: {
+        type: "DirectionalLight",
+        props: {
+          position: [8, 12, 6],
+          rotation: null,
+          scale: null,
+          color: "#ffcc88",
+          intensity: 2.5,
+          castShadow: true,
+        },
+        children: [],
+      },
+      clouds: {
+        type: "Cloud",
+        props: {
+          position: [0, 4, -8],
+          rotation: null,
+          scale: null,
+          seed: 7,
+          segments: 40,
+          bounds: [25, 3, 20],
+          volume: 10,
+          speed: 0.1,
+          fade: 25,
+          opacity: 0.6,
+          color: "#ffe8d0",
+          growth: 8,
+        },
+        children: [],
+      },
+
+      "island-main-float": {
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+        props: {
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+          rotation: null,
+          scale: null,
+          speed: 0.4,
+          rotationIntensity: 0.02,
+          floatIntensity: 0.3,
+          enabled: true,
+        },
+        children: ["island-main"],
+      },
+      "island-main": {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "main-base",
+          "main-top",
+          "main-underhang",
+          "tree-1-trunk",
+          "tree-1-canopy",
+          "tree-2-trunk",
+          "tree-2-canopy",
+          "tree-3-trunk",
+          "tree-3-canopy",
+          "house-base",
+          "house-roof",
+        ],
+      },
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+          rotation: null,
+          scale: null,
+          castShadow: true,
+          receiveShadow: true,
+          material: {
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+            emissiveIntensity: null,
+            opacity: null,
+            transparent: null,
+            wireframe: null,
+          },
+          radiusTop: 3,
+          radiusBottom: 1.5,
+          height: 2,
+          radialSegments: 16,
+        },
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+          scale: null,
+          castShadow: true,
+          receiveShadow: true,
+          material: {
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+          radiusBottom: 3,
+          height: 0.3,
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+          rotation: [PI, 0, 0],
+          scale: null,
+          castShadow: true,
+          receiveShadow: false,
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+          scale: null,
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+          receiveShadow: false,
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+          heightSegments: 12,
+        },
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+          rotation: null,
+          scale: null,
+          castShadow: true,
+          receiveShadow: false,
+          material: {
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+          radiusBottom: 0.08,
+          height: 1.1,
+          radialSegments: 8,
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+          rotation: null,
+          scale: [1, 1.3, 1],
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+          receiveShadow: false,
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+          },
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+          heightSegments: 12,
+        },
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+          rotation: null,
+          scale: null,
+          castShadow: true,
+          receiveShadow: false,
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+            wireframe: null,
+          },
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+          radiusBottom: 0.12,
+          height: 2,
+          radialSegments: 8,
+        },
+        children: [],
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+          rotation: null,
+          scale: [1.2, 1.4, 1.2],
+          castShadow: true,
+          receiveShadow: false,
+          material: {
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+          heightSegments: 12,
+        },
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+          rotation: [0, 0.3, 0],
+          scale: null,
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+          receiveShadow: true,
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+          depth: 0.7,
+          radius: 0.05,
+          smoothness: 4,
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+          rotation: [0, 1.085, 0],
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+          castShadow: true,
+          receiveShadow: false,
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+          },
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+          height: 0.5,
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+      "island-left-float": {
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+          scale: null,
+          speed: 0.6,
+          rotationIntensity: 0.03,
+          floatIntensity: 0.5,
+          enabled: true,
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+        children: ["island-left"],
+      },
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+        children: [
+          "left-base",
+          "left-top",
+          "left-under",
+          "left-tree-t",
+          "left-tree-c",
+        ],
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+          scale: null,
+          castShadow: true,
+          receiveShadow: true,
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+          scale: null,
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+          receiveShadow: true,
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+          scale: null,
+          speed: 0.5,
+          rotationIntensity: 0.02,
+          floatIntensity: 0.4,
+          enabled: true,
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+        children: ["island-right"],
+      },
+      "island-right": {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "right-base",
+          "right-top",
+          "right-under",
+          "right-tree-t",
+          "right-tree-c",
+        ],
+      },
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+          scale: null,
+          castShadow: true,
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+          scale: null,
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+          heightSegments: 8,
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+          enabled: true,
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+        children: ["tiny1-rock"],
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+          rotation: null,
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+          rotation: null,
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+        props: {
+          enableDamping: true,
+          dampingFactor: null,
+          enableZoom: true,
+          enablePan: null,
+          enableRotate: true,
+          minDistance: 8,
+          maxDistance: 30,
+          minPolarAngle: 0.2,
+          maxPolarAngle: 1.5,
+          autoRotate: true,
+          autoRotateSpeed: 0.3,
+          target: [0, 1, 0],
+        },
+        children: [],
+      },
+    },
+  },
+};

examples/react-three-fiber/app/scenes/hyperspace-tunnel.ts

@@ -0,0 +1,164 @@
+import type { Scene } from "./_helpers";
+
+export const hyperspaceTunnel: Scene = {
+  name: "Hyperspace Tunnel",
+  description:
+    "Neon warp tunnel at breakneck speed -- bloom, camera shake, particles streaming past",
+  spec: {
+    root: "scene",
+    elements: {
+      scene: {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "cam",
+          "controls",
+          "tunnel",
+          "stars",
+          "sparkles-core",
+          "sparkles-wide",
+          "ambient",
+          "center-light",
+          "shake",
+          "post",
+          "fog",
+        ],
+      },
+      cam: {
+        type: "PerspectiveCamera",
+        props: {
+          position: [0, 0, 2],
+          rotation: null,
+          scale: null,
+          fov: 80,
+          near: 0.1,
+          far: 200,
+          makeDefault: true,
+        },
+        children: [],
+      },
+      controls: {
+        type: "OrbitControls",
+        props: {
+          enableRotate: false,
+          enableZoom: false,
+          enablePan: false,
+        },
+        children: [],
+      },
+      tunnel: {
+        type: "WarpTunnel",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          ringCount: 100,
+          radius: 3,
+          length: 50,
+          speed: 12,
+          tubeRadius: 0.025,
+          color1: "#00ffff",
+          color2: "#ff00ff",
+        },
+        children: [],
+      },
+      stars: {
+        type: "Stars",
+        props: {
+          radius: 80,
+          depth: 60,
+          count: 6000,
+          factor: 5,
+          saturation: 0.4,
+          fade: true,
+          speed: 3,
+        },
+        children: [],
+      },
+      "sparkles-core": {
+        type: "Sparkles",
+        props: {
+          position: [0, 0, -10],
+          rotation: null,
+          scale: [4, 4, 30],
+          count: 300,
+          speed: 3,
+          opacity: 1,
+          color: "#00ffff",
+          size: 2,
+          noise: 0.5,
+        },
+        children: [],
+      },
+      "sparkles-wide": {
+        type: "Sparkles",
+        props: {
+          position: [0, 0, -15],
+          rotation: null,
+          scale: [6, 6, 40],
+          count: 200,
+          speed: 4,
+          opacity: 0.7,
+          color: "#ff44ff",
+          size: 1.5,
+          noise: 1,
+        },
+        children: [],
+      },
+      ambient: {
+        type: "AmbientLight",
+        props: { color: "#110033", intensity: 0.2 },
+        children: [],
+      },
+      "center-light": {
+        type: "PointLight",
+        props: {
+          position: [0, 0, -5],
+          rotation: null,
+          scale: null,
+          color: "#00ccff",
+          intensity: 30,
+          distance: 30,
+          decay: 2,
+          castShadow: false,
+        },
+        children: [],
+      },
+      shake: {
+        type: "CameraShake",
+        props: {
+          intensity: 0.3,
+          maxYaw: 0.03,
+          maxPitch: 0.03,
+          maxRoll: 0.02,
+        },
+        children: [],
+      },
+      post: {
+        type: "EffectComposer",
+        props: { enabled: true, multisampling: 8 },
+        children: ["bloom", "vignette"],
+      },
+      bloom: {
+        type: "Bloom",
+        props: {
+          intensity: 2.5,
+          luminanceThreshold: 0.1,
+          luminanceSmoothing: null,
+          mipmapBlur: true,
+        },
+        children: [],
+      },
+      vignette: {
+        type: "Vignette",
+        props: { offset: 0.3, darkness: 0.9 },
+        children: [],
+      },
+      fog: {
+        type: "Fog",
+        props: { color: "#030008", near: 5, far: 50 },
+        children: [],
+      },
+    },
+  },
+};

examples/react-three-fiber/app/scenes/index.ts

@@ -0,0 +1,29 @@
+import type { Scene } from "./_helpers";
+import { hyperspaceTunnel } from "./hyperspace-tunnel";
+import { orbitalChaos } from "./orbital-chaos";
+import { clockworkOrrery } from "./clockwork-orrery";
+import { deepSeaAbyss } from "./deep-sea-abyss";
+import { stormCell } from "./storm-cell";
+import { perpetualMotion } from "./perpetual-motion";
+import { floatingIslands } from "./floating-islands";
+import { productShowroom } from "./product-showroom";
+import { portalGallery } from "./portal-gallery";
+import { pipes } from "./pipes";
+import { mystify } from "./mystify";
+import { starfield } from "./starfield";
+export type { Scene };
+
+export const scenes: Scene[] = [
+  hyperspaceTunnel,
+  orbitalChaos,
+  clockworkOrrery,
+  deepSeaAbyss,
+  stormCell,
+  perpetualMotion,
+  floatingIslands,
+  productShowroom,
+  portalGallery,
+  pipes,
+  mystify,
+  starfield,
+];

examples/react-three-fiber/app/scenes/mystify.ts

@@ -0,0 +1,400 @@
+import type { Scene } from "./_helpers";
+
+export const mystify: Scene = {
+  name: "Mystify",
+  description:
+    "Neon wireframe torus knots orbiting in the void -- the Windows Mystify screensaver in 3D",
+  spec: {
+    root: "scene",
+    elements: {
+      scene: {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "cam",
+          "ambient",
+          "shape1",
+          "shape2",
+          "shape3",
+          "shape4",
+          "shape5",
+          "shape6",
+          "shape7",
+          "post",
+          "controls",
+        ],
+      },
+      cam: {
+        type: "PerspectiveCamera",
+        props: {
+          position: [0, 0, 10],
+          rotation: null,
+          scale: null,
+          fov: 55,
+          near: 0.1,
+          far: 1000,
+          makeDefault: true,
+        },
+        children: [],
+      },
+      ambient: {
+        type: "AmbientLight",
+        props: { color: "#111111", intensity: 0.1 },
+        children: [],
+      },
+      shape1: {
+        type: "Orbit",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 0.5,
+          radius: 3,
+          tilt: 0.3,
+        },
+        children: ["s1-spin"],
+      },
+      "s1-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 1.5,
+          axis: "x",
+        },
+        children: ["s1-body"],
+      },
+      "s1-body": {
+        type: "TorusKnot",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          radius: 0.4,
+          tube: 0.02,
+          p: 2,
+          q: 3,
+          tubularSegments: 128,
+          radialSegments: 4,
+          material: {
+            color: "#00ffff",
+            emissive: "#00ffff",
+            emissiveIntensity: 2,
+            wireframe: true,
+          },
+        },
+        children: [],
+      },
+      shape2: {
+        type: "Orbit",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: -0.4,
+          radius: 4,
+          tilt: -0.5,
+        },
+        children: ["s2-spin"],
+      },
+      "s2-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: -1,
+          axis: "z",
+        },
+        children: ["s2-body"],
+      },
+      "s2-body": {
+        type: "Torus",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          radius: 0.6,
+          tube: 0.015,
+          radialSegments: 4,
+          tubularSegments: 128,
+          material: {
+            color: "#ff00ff",
+            emissive: "#ff00ff",
+            emissiveIntensity: 2,
+            wireframe: true,
+          },
+        },
+        children: [],
+      },
+      shape3: {
+        type: "Orbit",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 0.7,
+          radius: 2.5,
+          tilt: 0.8,
+        },
+        children: ["s3-spin"],
+      },
+      "s3-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 2,
+          axis: "y",
+        },
+        children: ["s3-body"],
+      },
+      "s3-body": {
+        type: "TorusKnot",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          radius: 0.35,
+          tube: 0.015,
+          p: 3,
+          q: 2,
+          tubularSegments: 128,
+          radialSegments: 4,
+          material: {
+            color: "#ffff00",
+            emissive: "#ffff00",
+            emissiveIntensity: 2,
+            wireframe: true,
+          },
+        },
+        children: [],
+      },
+      shape4: {
+        type: "Orbit",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: -0.6,
+          radius: 3.5,
+          tilt: -0.2,
+        },
+        children: ["s4-spin"],
+      },
+      "s4-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 1.2,
+          axis: "x",
+        },
+        children: ["s4-body"],
+      },
+      "s4-body": {
+        type: "Torus",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          radius: 0.5,
+          tube: 0.012,
+          radialSegments: 4,
+          tubularSegments: 128,
+          material: {
+            color: "#00ff44",
+            emissive: "#00ff44",
+            emissiveIntensity: 2,
+            wireframe: true,
+          },
+        },
+        children: [],
+      },
+      shape5: {
+        type: "Orbit",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 0.3,
+          radius: 5,
+          tilt: 0.6,
+        },
+        children: ["s5-spin"],
+      },
+      "s5-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: -1.8,
+          axis: "z",
+        },
+        children: ["s5-body"],
+      },
+      "s5-body": {
+        type: "TorusKnot",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          radius: 0.5,
+          tube: 0.018,
+          p: 2,
+          q: 5,
+          tubularSegments: 128,
+          radialSegments: 4,
+          material: {
+            color: "#ff4400",
+            emissive: "#ff4400",
+            emissiveIntensity: 2,
+            wireframe: true,
+          },
+        },
+        children: [],
+      },
+      shape6: {
+        type: "Orbit",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: -0.8,
+          radius: 2,
+          tilt: -0.7,
+        },
+        children: ["s6-spin"],
+      },
+      "s6-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 2.5,
+          axis: "y",
+        },
+        children: ["s6-body"],
+      },
+      "s6-body": {
+        type: "Torus",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          radius: 0.3,
+          tube: 0.01,
+          radialSegments: 4,
+          tubularSegments: 128,
+          material: {
+            color: "#4488ff",
+            emissive: "#4488ff",
+            emissiveIntensity: 2,
+            wireframe: true,
+          },
+        },
+        children: [],
+      },
+      shape7: {
+        type: "Orbit",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 0.45,
+          radius: 4.5,
+          tilt: 1,
+        },
+        children: ["s7-spin"],
+      },
+      "s7-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: -0.8,
+          axis: "x",
+        },
+        children: ["s7-body"],
+      },
+      "s7-body": {
+        type: "TorusKnot",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          radius: 0.45,
+          tube: 0.015,
+          p: 3,
+          q: 4,
+          tubularSegments: 128,
+          radialSegments: 4,
+          material: {
+            color: "#ff88ff",
+            emissive: "#ff88ff",
+            emissiveIntensity: 2,
+            wireframe: true,
+          },
+        },
+        children: [],
+      },
+      post: {
+        type: "EffectComposer",
+        props: { enabled: true, multisampling: 8 },
+        children: ["bloom", "vignette"],
+      },
+      bloom: {
+        type: "Bloom",
+        props: {
+          intensity: 3,
+          luminanceThreshold: 0.05,
+          luminanceSmoothing: 0.3,
+          mipmapBlur: true,
+        },
+        children: [],
+      },
+      vignette: {
+        type: "Vignette",
+        props: { offset: 0.2, darkness: 0.8 },
+        children: [],
+      },
+      controls: {
+        type: "OrbitControls",
+        props: {
+          enableDamping: true,
+          dampingFactor: null,
+          enableZoom: true,
+          enablePan: true,
+          enableRotate: true,
+          minDistance: 4,
+          maxDistance: 18,
+          minPolarAngle: null,
+          maxPolarAngle: null,
+          autoRotate: true,
+          autoRotateSpeed: 0.3,
+        },
+        children: [],
+      },
+    },
+  },
+};

examples/react-three-fiber/app/scenes/orbital-chaos.ts

@@ -0,0 +1,554 @@
+import { PI } from "./_helpers";
+import type { Scene } from "./_helpers";
+
+export const orbitalChaos: Scene = {
+  name: "Orbital Chaos",
+  description:
+    "Everything in motion -- orbiting glass, spinning knots, morphing core, all with bloom",
+  spec: {
+    root: "scene",
+    elements: {
+      scene: {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "cam",
+          "env",
+          "stars",
+          "ambient",
+          "core-light",
+          "accent-1",
+          "accent-2",
+          "core-pulse",
+          "orbit-1",
+          "orbit-2",
+          "orbit-3",
+          "orbit-4",
+          "orbit-5",
+          "orbit-6",
+          "ring-spin-fast",
+          "ring-spin-slow",
+          "sparkles",
+          "post",
+          "fog",
+          "controls",
+        ],
+      },
+      cam: {
+        type: "PerspectiveCamera",
+        props: {
+          position: [0, 2, 8],
+          fov: 50,
+          makeDefault: true,
+        },
+        children: [],
+      },
+      env: {
+        type: "Environment",
+        props: { preset: "night", background: false, blur: 1, intensity: 0.15 },
+        children: [],
+      },
+      stars: {
+        type: "Stars",
+        props: {
+          radius: 120,
+          depth: 60,
+          count: 8000,
+          factor: 5,
+          saturation: 0.2,
+          fade: true,
+          speed: 0.5,
+        },
+        children: [],
+      },
+      ambient: {
+        type: "AmbientLight",
+        props: { color: "#110022", intensity: 0.3 },
+        children: [],
+      },
+      "core-light": {
+        type: "PointLight",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          color: "#ff44aa",
+          intensity: 80,
+          distance: 25,
+          decay: 2,
+          castShadow: false,
+        },
+        children: [],
+      },
+      "accent-1": {
+        type: "PointLight",
+        props: {
+          position: [5, 3, 5],
+          rotation: null,
+          scale: null,
+          color: "#00ffff",
+          intensity: 25,
+          distance: 20,
+          decay: 2,
+          castShadow: false,
+        },
+        children: [],
+      },
+      "accent-2": {
+        type: "PointLight",
+        props: {
+          position: [-5, -2, -5],
+          rotation: null,
+          scale: null,
+          color: "#ff00ff",
+          intensity: 25,
+          distance: 20,
+          decay: 2,
+          castShadow: false,
+        },
+        children: [],
+      },
+
+      "core-pulse": {
+        type: "Pulse",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 0.8,
+          min: 0.85,
+          max: 1.15,
+        },
+        children: ["core-spin"],
+      },
+      "core-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 0.3,
+          axis: "y",
+        },
+        children: ["core-blob"],
+      },
+      "core-blob": {
+        type: "DistortSphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          radius: 1.2,
+          widthSegments: 64,
+          heightSegments: 32,
+          color: "#ff2288",
+          speed: 4,
+          distort: 0.6,
+          metalness: 0.1,
+          roughness: 0.1,
+        },
+        children: [],
+      },
+
+      "orbit-1": {
+        type: "Orbit",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          speed: 0.8,
+          radius: 4,
+          tilt: 0.5,
+        },
+        children: ["orb-1-spin"],
+      },
+      "orb-1-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 2,
+          axis: "x",
+        },
+        children: ["orb-1"],
+      },
+      "orb-1": {
+        type: "GlassSphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          radius: 0.4,
+          widthSegments: 32,
+          heightSegments: 16,
+          color: "#00ffff",
+          transmission: 1,
+          thickness: 0.5,
+          roughness: 0,
+          chromaticAberration: 0.15,
+          ior: 1.8,
+          distortion: 0.1,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+
+      "orbit-2": {
+        type: "Orbit",
+        props: {
+          position: [0, 0.5, 0],
+          rotation: null,
+          scale: null,
+          speed: -0.6,
+          radius: 5.5,
+          tilt: 1,
+        },
+        children: ["orb-2-spin"],
+      },
+      "orb-2-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 3,
+          axis: "z",
+        },
+        children: ["orb-2"],
+      },
+      "orb-2": {
+        type: "TorusKnot",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#ff00ff",
+            metalness: 0.9,
+            roughness: 0.1,
+            emissive: "#ff00ff",
+            emissiveIntensity: 0.8,
+            opacity: null,
+            transparent: null,
+            wireframe: null,
+          },
+          radius: 0.35,
+          tube: 0.12,
+          tubularSegments: 64,
+          radialSegments: 8,
+          p: 2,
+          q: 3,
+        },
+        children: [],
+      },
+
+      "orbit-3": {
+        type: "Orbit",
+        props: {
+          position: [0, -0.3, 0],
+          rotation: null,
+          scale: null,
+          speed: 1.2,
+          radius: 3.2,
+          tilt: 0.3,
+        },
+        children: ["orb-3"],
+      },
+      "orb-3": {
+        type: "GlassSphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          radius: 0.3,
+          widthSegments: 32,
+          heightSegments: 16,
+          color: "#ff8800",
+          transmission: 1,
+          thickness: 0.4,
+          roughness: 0,
+          chromaticAberration: 0.1,
+          ior: 1.6,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+
+      "orbit-4": {
+        type: "Orbit",
+        props: {
+          position: [0, 1, 0],
+          rotation: null,
+          scale: null,
+          speed: -1.5,
+          radius: 6.5,
+          tilt: -0.8,
+        },
+        children: ["orb-4-spin"],
+      },
+      "orb-4-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: -4,
+          axis: "y",
+        },
+        children: ["orb-4"],
+      },
+      "orb-4": {
+        type: "Sphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#00ff88",
+            metalness: null,
+            roughness: null,
+            emissive: "#00ff88",
+            emissiveIntensity: 0.8,
+            opacity: null,
+            transparent: null,
+            wireframe: true,
+          },
+          radius: 0.35,
+          widthSegments: 16,
+          heightSegments: 12,
+        },
+        children: [],
+      },
+
+      "orbit-5": {
+        type: "Orbit",
+        props: {
+          position: [0, -0.5, 0],
+          rotation: null,
+          scale: null,
+          speed: 0.4,
+          radius: 8,
+          tilt: 0.2,
+        },
+        children: ["orb-5-spin"],
+      },
+      "orb-5-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 1.5,
+          axis: "z",
+        },
+        children: ["orb-5"],
+      },
+      "orb-5": {
+        type: "GlassBox",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          width: 0.5,
+          height: 0.5,
+          depth: 0.5,
+          color: "#ff44ff",
+          transmission: 1,
+          thickness: 0.4,
+          roughness: 0,
+          chromaticAberration: 0.08,
+          ior: 1.7,
+          distortion: 0,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+
+      "orbit-6": {
+        type: "Orbit",
+        props: {
+          position: [0, 0.8, 0],
+          rotation: null,
+          scale: null,
+          speed: 2,
+          radius: 2.2,
+          tilt: 1.5,
+        },
+        children: ["orb-6"],
+      },
+      "orb-6": {
+        type: "DistortSphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          radius: 0.25,
+          widthSegments: 32,
+          heightSegments: 16,
+          color: "#ffcc00",
+          speed: 5,
+          distort: 0.7,
+          metalness: 0.5,
+          roughness: 0.1,
+        },
+        children: [],
+      },
+
+      "ring-spin-fast": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: [0.3, 0, 0],
+          scale: null,
+          speed: 0.5,
+          axis: "y",
+        },
+        children: ["ring-inner"],
+      },
+      "ring-inner": {
+        type: "Torus",
+        props: {
+          position: null,
+          rotation: [PI / 2, 0, 0],
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#00ffff",
+            metalness: 0.9,
+            roughness: 0.1,
+            emissive: "#00ccff",
+            emissiveIntensity: 0.5,
+            opacity: 0.3,
+            transparent: true,
+            wireframe: null,
+          },
+          radius: 9,
+          tube: 0.015,
+          radialSegments: null,
+          tubularSegments: 128,
+        },
+        children: [],
+      },
+      "ring-spin-slow": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: [-0.5, 0, 0.3],
+          scale: null,
+          speed: -0.3,
+          axis: "y",
+        },
+        children: ["ring-outer"],
+      },
+      "ring-outer": {
+        type: "Torus",
+        props: {
+          position: null,
+          rotation: [PI / 2, 0, 0],
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#ff00ff",
+            metalness: 0.9,
+            roughness: 0.1,
+            emissive: "#ff00aa",
+            emissiveIntensity: 0.3,
+            opacity: 0.2,
+            transparent: true,
+            wireframe: null,
+          },
+          radius: 11,
+          tube: 0.012,
+          radialSegments: null,
+          tubularSegments: 128,
+        },
+        children: [],
+      },
+
+      sparkles: {
+        type: "Sparkles",
+        props: {
+          position: null,
+          rotation: null,
+          scale: [18, 18, 18],
+          count: 400,
+          speed: 0.4,
+          opacity: 0.5,
+          color: "#ffddaa",
+          size: 1.2,
+          noise: 2,
+        },
+        children: [],
+      },
+      post: {
+        type: "EffectComposer",
+        props: { enabled: true, multisampling: 8 },
+        children: ["bloom", "vignette"],
+      },
+      bloom: {
+        type: "Bloom",
+        props: {
+          intensity: 2,
+          luminanceThreshold: 0.15,
+          luminanceSmoothing: null,
+          mipmapBlur: true,
+        },
+        children: [],
+      },
+      vignette: {
+        type: "Vignette",
+        props: { offset: 0.4, darkness: 0.7 },
+        children: [],
+      },
+      fog: {
+        type: "Fog",
+        props: { color: "#030008", near: 10, far: 40 },
+        children: [],
+      },
+      controls: {
+        type: "OrbitControls",
+        props: {
+          enableDamping: true,
+          dampingFactor: null,
+          enableZoom: true,
+          enablePan: null,
+          enableRotate: true,
+          minDistance: 5,
+          maxDistance: 25,
+          minPolarAngle: null,
+          maxPolarAngle: null,
+          autoRotate: true,
+          autoRotateSpeed: 0.4,
+        },
+        children: [],
+      },
+    },
+  },
+};

examples/react-three-fiber/app/scenes/perpetual-motion.ts

@@ -0,0 +1,307 @@
+import { PI } from "./_helpers";
+import type { Scene } from "./_helpers";
+
+export const perpetualMotion: Scene = {
+  name: "Perpetual Motion Machine",
+  description:
+    "A gyroscope/gimbal with 3 nested spinning rings on different axes, with a perfectly still glass sphere floating at the center. Clean, minimal, mesmerizing.",
+  spec: {
+    root: "scene",
+    elements: {
+      scene: {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "env",
+          "ambient",
+          "key",
+          "fill",
+          "outer-spin",
+          "sparkles",
+          "floor",
+          "shadows",
+          "post",
+          "controls",
+        ],
+      },
+      env: {
+        type: "Environment",
+        props: {
+          preset: "studio",
+          background: false,
+          blur: null,
+          intensity: 1,
+        },
+        children: [],
+      },
+      ambient: {
+        type: "AmbientLight",
+        props: { color: "#ffffff", intensity: 0.3 },
+        children: [],
+      },
+      key: {
+        type: "DirectionalLight",
+        props: {
+          position: [5, 8, 5],
+          rotation: null,
+          scale: null,
+          color: "#ffffff",
+          intensity: 2,
+          castShadow: true,
+        },
+        children: [],
+      },
+      fill: {
+        type: "PointLight",
+        props: {
+          position: [-3, 4, -3],
+          rotation: null,
+          scale: null,
+          color: "#aaccff",
+          intensity: 10,
+          distance: 15,
+          decay: 2,
+          castShadow: false,
+        },
+        children: [],
+      },
+      "outer-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 0.4,
+          axis: "y",
+        },
+        children: ["outer-ring", "mid-spin"],
+      },
+      "outer-ring": {
+        type: "Torus",
+        props: {
+          position: null,
+          rotation: [PI / 2, 0, 0],
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#cccccc",
+            metalness: 1,
+            roughness: 0.05,
+            emissive: "#ffffff",
+            emissiveIntensity: 0.05,
+            opacity: null,
+            transparent: null,
+            wireframe: null,
+          },
+          radius: 4,
+          tube: 0.06,
+          radialSegments: null,
+          tubularSegments: 128,
+        },
+        children: [],
+      },
+      "mid-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: -0.8,
+          axis: "x",
+        },
+        children: ["mid-ring", "inner-spin"],
+      },
+      "mid-ring": {
+        type: "Torus",
+        props: {
+          position: null,
+          rotation: [PI / 2, 0, 0],
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#ffcc44",
+            metalness: 0.95,
+            roughness: 0.08,
+            emissive: "#cc9900",
+            emissiveIntensity: 0.1,
+            opacity: null,
+            transparent: null,
+            wireframe: null,
+          },
+          radius: 3,
+          tube: 0.05,
+          radialSegments: null,
+          tubularSegments: 128,
+        },
+        children: [],
+      },
+      "inner-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 1.5,
+          axis: "z",
+        },
+        children: ["inner-ring", "center-float"],
+      },
+      "inner-ring": {
+        type: "Torus",
+        props: {
+          position: null,
+          rotation: [PI / 2, 0, 0],
+          scale: null,
+          castShadow: false,
+          receiveShadow: false,
+          material: {
+            color: "#cc8844",
+            metalness: 0.9,
+            roughness: 0.1,
+            emissive: "#996633",
+            emissiveIntensity: 0.1,
+            opacity: null,
+            transparent: null,
+            wireframe: null,
+          },
+          radius: 2,
+          tube: 0.04,
+          radialSegments: null,
+          tubularSegments: 128,
+        },
+        children: [],
+      },
+      "center-float": {
+        type: "Float",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          speed: 0.3,
+          rotationIntensity: 0,
+          floatIntensity: 0.1,
+          enabled: true,
+        },
+        children: ["center-orb"],
+      },
+      "center-orb": {
+        type: "GlassSphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: true,
+          receiveShadow: false,
+          radius: 0.8,
+          widthSegments: 64,
+          heightSegments: 32,
+          color: "#ffffff",
+          transmission: 1,
+          thickness: 1,
+          roughness: 0,
+          chromaticAberration: 0.12,
+          ior: 2,
+          distortion: 0.1,
+          distortionScale: 0.4,
+          temporalDistortion: 0.4,
+          samples: 10,
+          resolution: 256,
+        },
+        children: [],
+      },
+      sparkles: {
+        type: "Sparkles",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: [10, 10, 10],
+          count: 100,
+          speed: 0.1,
+          opacity: 0.2,
+          color: "#ccddff",
+          size: 0.8,
+          noise: 2,
+        },
+        children: [],
+      },
+      floor: {
+        type: "ReflectorPlane",
+        props: {
+          position: [0, -4.5, 0],
+          rotation: [-PI / 2, 0, 0],
+          scale: null,
+          width: 25,
+          height: 25,
+          color: "#1a1a2a",
+          resolution: 1024,
+          blur: 400,
+          mirror: 0.7,
+          mixBlur: 10,
+          mixStrength: 2,
+          depthScale: 0.2,
+          metalness: 0.5,
+          roughness: 1,
+        },
+        children: [],
+      },
+      shadows: {
+        type: "ContactShadows",
+        props: {
+          position: [0, -4.5, 0],
+          rotation: null,
+          scale: null,
+          opacity: 0.3,
+          width: 12,
+          height: 12,
+          blur: 2.5,
+          near: null,
+          far: 10,
+          smooth: true,
+          resolution: 512,
+          frames: null,
+          color: "#000000",
+        },
+        children: [],
+      },
+      post: {
+        type: "EffectComposer",
+        props: { enabled: true, multisampling: 8 },
+        children: ["bloom", "vignette"],
+      },
+      bloom: {
+        type: "Bloom",
+        props: {
+          intensity: 0.8,
+          luminanceThreshold: 0.25,
+          luminanceSmoothing: null,
+          mipmapBlur: true,
+        },
+        children: [],
+      },
+      vignette: {
+        type: "Vignette",
+        props: { offset: 0.5, darkness: 0.4 },
+        children: [],
+      },
+      controls: {
+        type: "OrbitControls",
+        props: {
+          enableDamping: true,
+          dampingFactor: null,
+          enableZoom: true,
+          enablePan: null,
+          enableRotate: true,
+          minDistance: 5,
+          maxDistance: 16,
+          minPolarAngle: 0.3,
+          maxPolarAngle: 1.5,
+          autoRotate: true,
+          autoRotateSpeed: 0.3,
+        },
+        children: [],
+      },
+    },
+  },
+};

examples/react-three-fiber/app/scenes/pipes.ts

@@ -0,0 +1,764 @@
+import type { Scene } from "./_helpers";
+
+const goldMaterial = {
+  color: "#cc8833",
+  metalness: 1,
+  roughness: 0.05,
+};
+
+const blueMaterial = {
+  color: "#3388cc",
+  metalness: 1,
+  roughness: 0.05,
+};
+
+const magentaMaterial = {
+  color: "#cc3388",
+  metalness: 1,
+  roughness: 0.05,
+};
+
+export const pipes: Scene = {
+  name: "Pipes",
+  description:
+    "Classic 3D Pipes screensaver -- chrome pipes snaking through space at right angles",
+  spec: {
+    root: "scene",
+    elements: {
+      scene: {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "camera",
+          "env",
+          "ambient",
+          "directional",
+          "pipe-system",
+          "post",
+          "fog",
+          "controls",
+        ],
+      },
+      camera: {
+        type: "PerspectiveCamera",
+        props: {
+          position: [0, 3, 12],
+          rotation: null,
+          scale: null,
+          fov: 50,
+          near: null,
+          far: null,
+          makeDefault: true,
+        },
+        children: [],
+      },
+      env: {
+        type: "Environment",
+        props: {
+          preset: "warehouse",
+          background: false,
+          blur: 0.5,
+          intensity: 1,
+        },
+        children: [],
+      },
+      ambient: {
+        type: "AmbientLight",
+        props: { color: "#ffffff", intensity: 0.3 },
+        children: [],
+      },
+      directional: {
+        type: "DirectionalLight",
+        props: {
+          position: [5, 10, 5],
+          rotation: null,
+          scale: null,
+          color: "#ffffff",
+          intensity: 1,
+          castShadow: null,
+        },
+        children: [],
+      },
+      "pipe-system": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 0.1,
+          axis: "y",
+        },
+        children: ["pipe1-group", "pipe2-group", "pipe3-group"],
+      },
+      "pipe1-group": {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "p1-j0",
+          "p1-s1",
+          "p1-j1",
+          "p1-s2",
+          "p1-j2",
+          "p1-s3",
+          "p1-j3",
+          "p1-s4",
+          "p1-j4",
+          "p1-s5",
+          "p1-j5",
+          "p1-s6",
+          "p1-j6",
+        ],
+      },
+      "p1-j0": {
+        type: "Sphere",
+        props: {
+          position: [-3, -3, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: goldMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p1-j1": {
+        type: "Sphere",
+        props: {
+          position: [-3, 0, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: goldMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p1-j2": {
+        type: "Sphere",
+        props: {
+          position: [1, 0, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: goldMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p1-j3": {
+        type: "Sphere",
+        props: {
+          position: [1, 2, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: goldMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p1-j4": {
+        type: "Sphere",
+        props: {
+          position: [1, 2, -3],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: goldMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p1-j5": {
+        type: "Sphere",
+        props: {
+          position: [1, 0, -3],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: goldMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p1-j6": {
+        type: "Sphere",
+        props: {
+          position: [-1, 0, -3],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: goldMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p1-s1": {
+        type: "Cylinder",
+        props: {
+          position: [-3, -1.5, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: goldMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 3,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p1-s2": {
+        type: "Cylinder",
+        props: {
+          position: [-1, 0, 0],
+          rotation: [0, 0, 1.5708],
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: goldMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 4,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p1-s3": {
+        type: "Cylinder",
+        props: {
+          position: [1, 1, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: goldMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 2,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p1-s4": {
+        type: "Cylinder",
+        props: {
+          position: [1, 2, -1.5],
+          rotation: [1.5708, 0, 0],
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: goldMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 3,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p1-s5": {
+        type: "Cylinder",
+        props: {
+          position: [1, 1, -3],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: goldMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 2,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p1-s6": {
+        type: "Cylinder",
+        props: {
+          position: [0, 0, -3],
+          rotation: [0, 0, 1.5708],
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: goldMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 2,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "pipe2-group": {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "p2-j0",
+          "p2-s1",
+          "p2-j1",
+          "p2-s2",
+          "p2-j2",
+          "p2-s3",
+          "p2-j3",
+          "p2-s4",
+          "p2-j4",
+          "p2-s5",
+          "p2-j5",
+          "p2-s6",
+          "p2-j6",
+        ],
+      },
+      "p2-j0": {
+        type: "Sphere",
+        props: {
+          position: [2, -3, 2],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: blueMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p2-j1": {
+        type: "Sphere",
+        props: {
+          position: [2, 1, 2],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: blueMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p2-j2": {
+        type: "Sphere",
+        props: {
+          position: [2, 1, -2],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: blueMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p2-j3": {
+        type: "Sphere",
+        props: {
+          position: [-1, 1, -2],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: blueMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p2-j4": {
+        type: "Sphere",
+        props: {
+          position: [-1, 4, -2],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: blueMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p2-j5": {
+        type: "Sphere",
+        props: {
+          position: [-3, 4, -2],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: blueMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p2-j6": {
+        type: "Sphere",
+        props: {
+          position: [-3, 4, 1],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: blueMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p2-s1": {
+        type: "Cylinder",
+        props: {
+          position: [2, -1, 2],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: blueMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 4,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p2-s2": {
+        type: "Cylinder",
+        props: {
+          position: [2, 1, 0],
+          rotation: [1.5708, 0, 0],
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: blueMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 4,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p2-s3": {
+        type: "Cylinder",
+        props: {
+          position: [0.5, 1, -2],
+          rotation: [0, 0, 1.5708],
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: blueMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 3,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p2-s4": {
+        type: "Cylinder",
+        props: {
+          position: [-1, 2.5, -2],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: blueMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 3,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p2-s5": {
+        type: "Cylinder",
+        props: {
+          position: [-2, 4, -2],
+          rotation: [0, 0, 1.5708],
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: blueMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 2,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p2-s6": {
+        type: "Cylinder",
+        props: {
+          position: [-3, 4, -0.5],
+          rotation: [1.5708, 0, 0],
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: blueMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 3,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "pipe3-group": {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "p3-j0",
+          "p3-s1",
+          "p3-j1",
+          "p3-s2",
+          "p3-j2",
+          "p3-s3",
+          "p3-j3",
+          "p3-s4",
+          "p3-j4",
+          "p3-s5",
+          "p3-j5",
+        ],
+      },
+      "p3-j0": {
+        type: "Sphere",
+        props: {
+          position: [-2, 3, 3],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: magentaMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p3-j1": {
+        type: "Sphere",
+        props: {
+          position: [-2, -2, 3],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: magentaMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p3-j2": {
+        type: "Sphere",
+        props: {
+          position: [1, -2, 3],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: magentaMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p3-j3": {
+        type: "Sphere",
+        props: {
+          position: [1, -2, -2],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: magentaMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p3-j4": {
+        type: "Sphere",
+        props: {
+          position: [1, 0, -2],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: magentaMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p3-j5": {
+        type: "Sphere",
+        props: {
+          position: [-3, 0, -2],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: magentaMaterial,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+        },
+        children: [],
+      },
+      "p3-s1": {
+        type: "Cylinder",
+        props: {
+          position: [-2, 0.5, 3],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: magentaMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 5,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p3-s2": {
+        type: "Cylinder",
+        props: {
+          position: [-0.5, -2, 3],
+          rotation: [0, 0, 1.5708],
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: magentaMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 3,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p3-s3": {
+        type: "Cylinder",
+        props: {
+          position: [1, -2, 0.5],
+          rotation: [1.5708, 0, 0],
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: magentaMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 5,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p3-s4": {
+        type: "Cylinder",
+        props: {
+          position: [1, -1, -2],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: magentaMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 2,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      "p3-s5": {
+        type: "Cylinder",
+        props: {
+          position: [-1, 0, -2],
+          rotation: [0, 0, 1.5708],
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          material: magentaMaterial,
+          radiusTop: 0.08,
+          radiusBottom: 0.08,
+          height: 4,
+          radialSegments: 12,
+        },
+        children: [],
+      },
+      post: {
+        type: "EffectComposer",
+        props: { enabled: true, multisampling: 8 },
+        children: ["bloom", "vignette"],
+      },
+      bloom: {
+        type: "Bloom",
+        props: {
+          intensity: 0.4,
+          luminanceThreshold: 0.4,
+          luminanceSmoothing: null,
+          mipmapBlur: true,
+        },
+        children: [],
+      },
+      vignette: {
+        type: "Vignette",
+        props: { offset: 0.3, darkness: 0.4 },
+        children: [],
+      },
+      fog: {
+        type: "Fog",
+        props: { color: "#111111", near: 10, far: 30 },
+        children: [],
+      },
+      controls: {
+        type: "OrbitControls",
+        props: {
+          enableDamping: true,
+          dampingFactor: null,
+          enableZoom: null,
+          enablePan: null,
+          enableRotate: null,
+          minDistance: 5,
+          maxDistance: 20,
+          minPolarAngle: null,
+          maxPolarAngle: null,
+          autoRotate: true,
+          autoRotateSpeed: 0.6,
+        },
+        children: [],
+      },
+    },
+  },
+};

examples/react-three-fiber/app/scenes/portal-gallery.ts

@@ -0,0 +1,809 @@
+import type { Scene } from "./_helpers";
+
+export const portalGallery: Scene = {
+  name: "Portal Gallery",
+  description:
+    "Three framed portals into different worlds -- sunset clouds, starfield, and enchanted forest",
+  spec: {
+    root: "scene",
+    elements: {
+      scene: {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "cam",
+          "env",
+          "ambient",
+          "directional",
+          "floor",
+          "shadows",
+          "frame1",
+          "frame2",
+          "frame3",
+          "gallery-sparkles",
+          "post",
+          "controls",
+        ],
+      },
+      cam: {
+        type: "PerspectiveCamera",
+        props: {
+          position: [0, 2, 7],
+          rotation: null,
+          scale: null,
+          fov: 50,
+          near: 0.1,
+          far: 200,
+          makeDefault: true,
+        },
+        children: [],
+      },
+      env: {
+        type: "Environment",
+        props: {
+          preset: "lobby",
+          background: false,
+          blur: 0,
+          intensity: 0.4,
+        },
+        children: [],
+      },
+      ambient: {
+        type: "AmbientLight",
+        props: { color: "#e8e0d8", intensity: 0.5 },
+        children: [],
+      },
+      directional: {
+        type: "DirectionalLight",
+        props: {
+          position: [5, 8, 3],
+          rotation: null,
+          scale: null,
+          color: "#ffffff",
+          intensity: 1,
+          castShadow: true,
+        },
+        children: [],
+      },
+      floor: {
+        type: "ReflectorPlane",
+        props: {
+          position: [0, 0, 0],
+          rotation: [-1.5708, 0, 0],
+          scale: null,
+          width: 30,
+          height: 30,
+          color: "#2a2a2a",
+          resolution: 1024,
+          blur: 400,
+          mirror: 0.4,
+          mixBlur: 10,
+          mixStrength: 1.5,
+          metalness: 0.5,
+          roughness: 0.8,
+        },
+        children: [],
+      },
+      shadows: {
+        type: "ContactShadows",
+        props: {
+          position: [0, 0.01, 0],
+          rotation: null,
+          scale: null,
+          opacity: 0.4,
+          width: 20,
+          height: 20,
+          blur: 2.5,
+          far: 8,
+          color: "#000000",
+        },
+        children: [],
+      },
+
+      // --- PORTAL 1 (left, sunset world) ---
+      frame1: {
+        type: "Group",
+        props: {
+          position: [-3.5, 2, -2],
+          rotation: [0, 0.3, 0],
+          scale: null,
+        },
+        children: [
+          "frame1-top",
+          "frame1-bottom",
+          "frame1-left",
+          "frame1-right",
+          "portal1-mesh",
+        ],
+      },
+      "frame1-top": {
+        type: "Box",
+        props: {
+          position: [0, 1.55, 0],
+          rotation: null,
+          scale: null,
+          width: 2.3,
+          height: 0.15,
+          depth: 0.15,
+          material: { color: "#8B7355", metalness: 0.3, roughness: 0.6 },
+        },
+        children: [],
+      },
+      "frame1-bottom": {
+        type: "Box",
+        props: {
+          position: [0, -1.55, 0],
+          rotation: null,
+          scale: null,
+          width: 2.3,
+          height: 0.15,
+          depth: 0.15,
+          material: { color: "#8B7355", metalness: 0.3, roughness: 0.6 },
+        },
+        children: [],
+      },
+      "frame1-left": {
+        type: "Box",
+        props: {
+          position: [-1.075, 0, 0],
+          rotation: null,
+          scale: null,
+          width: 0.15,
+          height: 3.25,
+          depth: 0.15,
+          material: { color: "#8B7355", metalness: 0.3, roughness: 0.6 },
+        },
+        children: [],
+      },
+      "frame1-right": {
+        type: "Box",
+        props: {
+          position: [1.075, 0, 0],
+          rotation: null,
+          scale: null,
+          width: 0.15,
+          height: 3.25,
+          depth: 0.15,
+          material: { color: "#8B7355", metalness: 0.3, roughness: 0.6 },
+        },
+        children: [],
+      },
+      "portal1-mesh": {
+        type: "Plane",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          width: 2,
+          height: 3,
+        },
+        children: ["portal1-mat"],
+      },
+      "portal1-mat": {
+        type: "MeshPortalMaterial",
+        props: { blend: 0, blur: 0.5, resolution: 512 },
+        children: [
+          "p1-sky",
+          "p1-sun-light",
+          "p1-cloud1",
+          "p1-cloud2",
+          "p1-cloud3",
+          "p1-ground",
+        ],
+      },
+      "p1-sky": {
+        type: "Sky",
+        props: {
+          distance: null,
+          sunPosition: [100, 10, 50],
+          inclination: null,
+          azimuth: null,
+          rayleigh: 2,
+          turbidity: 10,
+          mieCoefficient: 0.005,
+          mieDirectionalG: null,
+        },
+        children: [],
+      },
+      "p1-sun-light": {
+        type: "DirectionalLight",
+        props: {
+          position: [5, 5, 3],
+          rotation: null,
+          scale: null,
+          color: "#ffaa55",
+          intensity: 2,
+          castShadow: false,
+        },
+        children: [],
+      },
+      "p1-cloud1": {
+        type: "Cloud",
+        props: {
+          position: [-3, 4, -5],
+          rotation: null,
+          scale: null,
+          seed: 1,
+          segments: 20,
+          bounds: [6, 2, 3],
+          opacity: 0.6,
+          color: "#ffddaa",
+          speed: 0.1,
+          volume: 5,
+          fade: null,
+          growth: null,
+        },
+        children: [],
+      },
+      "p1-cloud2": {
+        type: "Cloud",
+        props: {
+          position: [4, 5, -8],
+          rotation: null,
+          scale: null,
+          seed: 7,
+          segments: 25,
+          bounds: [8, 2, 4],
+          opacity: 0.5,
+          color: "#ffccaa",
+          speed: 0.08,
+          volume: 6,
+          fade: null,
+          growth: null,
+        },
+        children: [],
+      },
+      "p1-cloud3": {
+        type: "Cloud",
+        props: {
+          position: [0, 3.5, -4],
+          rotation: null,
+          scale: null,
+          seed: 14,
+          segments: 15,
+          bounds: [5, 1.5, 2.5],
+          opacity: 0.7,
+          color: "#ffeedd",
+          speed: 0.12,
+          volume: 4,
+          fade: null,
+          growth: null,
+        },
+        children: [],
+      },
+      "p1-ground": {
+        type: "Plane",
+        props: {
+          position: [0, -2, 0],
+          rotation: [-1.5708, 0, 0],
+          scale: null,
+          width: 30,
+          height: 30,
+          material: { color: "#886644", roughness: 1 },
+        },
+        children: [],
+      },
+
+      // --- PORTAL 2 (center, night/stars world) ---
+      frame2: {
+        type: "Group",
+        props: {
+          position: [0, 2, -3],
+          rotation: null,
+          scale: null,
+        },
+        children: [
+          "frame2-top",
+          "frame2-bottom",
+          "frame2-left",
+          "frame2-right",
+          "portal2-mesh",
+        ],
+      },
+      "frame2-top": {
+        type: "Box",
+        props: {
+          position: [0, 1.55, 0],
+          rotation: null,
+          scale: null,
+          width: 2.3,
+          height: 0.15,
+          depth: 0.15,
+          material: { color: "#555566", metalness: 0.8, roughness: 0.2 },
+        },
+        children: [],
+      },
+      "frame2-bottom": {
+        type: "Box",
+        props: {
+          position: [0, -1.55, 0],
+          rotation: null,
+          scale: null,
+          width: 2.3,
+          height: 0.15,
+          depth: 0.15,
+          material: { color: "#555566", metalness: 0.8, roughness: 0.2 },
+        },
+        children: [],
+      },
+      "frame2-left": {
+        type: "Box",
+        props: {
+          position: [-1.075, 0, 0],
+          rotation: null,
+          scale: null,
+          width: 0.15,
+          height: 3.25,
+          depth: 0.15,
+          material: { color: "#555566", metalness: 0.8, roughness: 0.2 },
+        },
+        children: [],
+      },
+      "frame2-right": {
+        type: "Box",
+        props: {
+          position: [1.075, 0, 0],
+          rotation: null,
+          scale: null,
+          width: 0.15,
+          height: 3.25,
+          depth: 0.15,
+          material: { color: "#555566", metalness: 0.8, roughness: 0.2 },
+        },
+        children: [],
+      },
+      "portal2-mesh": {
+        type: "Plane",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          width: 2,
+          height: 3,
+        },
+        children: ["portal2-mat"],
+      },
+      "portal2-mat": {
+        type: "MeshPortalMaterial",
+        props: { blend: 0, blur: 0.5, resolution: 512 },
+        children: [
+          "p2-stars",
+          "p2-ambient",
+          "p2-nebula1",
+          "p2-nebula2",
+          "p2-sparkles",
+        ],
+      },
+      "p2-stars": {
+        type: "Stars",
+        props: {
+          radius: 80,
+          depth: 40,
+          count: 6000,
+          factor: 5,
+          saturation: 0.5,
+          fade: true,
+          speed: 0.3,
+        },
+        children: [],
+      },
+      "p2-ambient": {
+        type: "AmbientLight",
+        props: { color: "#111133", intensity: 0.3 },
+        children: [],
+      },
+      "p2-nebula1": {
+        type: "Sphere",
+        props: {
+          position: [3, 2, -8],
+          rotation: null,
+          scale: null,
+          radius: 2,
+          widthSegments: null,
+          heightSegments: null,
+          material: {
+            color: "#4400aa",
+            emissive: "#4400aa",
+            emissiveIntensity: 0.5,
+            transparent: true,
+            opacity: 0.3,
+          },
+        },
+        children: [],
+      },
+      "p2-nebula2": {
+        type: "Sphere",
+        props: {
+          position: [-4, -1, -10],
+          rotation: null,
+          scale: null,
+          radius: 3,
+          widthSegments: null,
+          heightSegments: null,
+          material: {
+            color: "#aa0044",
+            emissive: "#aa0044",
+            emissiveIntensity: 0.4,
+            transparent: true,
+            opacity: 0.25,
+          },
+        },
+        children: [],
+      },
+      "p2-sparkles": {
+        type: "Sparkles",
+        props: {
+          position: [0, 0, -5],
+          rotation: null,
+          scale: [10, 10, 10],
+          count: 200,
+          speed: 0.2,
+          opacity: 0.8,
+          color: "#aabbff",
+          size: 2,
+          noise: 3,
+        },
+        children: [],
+      },
+
+      // --- PORTAL 3 (right, forest/nature world) ---
+      frame3: {
+        type: "Group",
+        props: {
+          position: [3.5, 2, -2],
+          rotation: [0, -0.3, 0],
+          scale: null,
+        },
+        children: [
+          "frame3-top",
+          "frame3-bottom",
+          "frame3-left",
+          "frame3-right",
+          "portal3-mesh",
+        ],
+      },
+      "frame3-top": {
+        type: "Box",
+        props: {
+          position: [0, 1.55, 0],
+          rotation: null,
+          scale: null,
+          width: 2.3,
+          height: 0.15,
+          depth: 0.15,
+          material: { color: "#6B4423", metalness: 0.1, roughness: 0.8 },
+        },
+        children: [],
+      },
+      "frame3-bottom": {
+        type: "Box",
+        props: {
+          position: [0, -1.55, 0],
+          rotation: null,
+          scale: null,
+          width: 2.3,
+          height: 0.15,
+          depth: 0.15,
+          material: { color: "#6B4423", metalness: 0.1, roughness: 0.8 },
+        },
+        children: [],
+      },
+      "frame3-left": {
+        type: "Box",
+        props: {
+          position: [-1.075, 0, 0],
+          rotation: null,
+          scale: null,
+          width: 0.15,
+          height: 3.25,
+          depth: 0.15,
+          material: { color: "#6B4423", metalness: 0.1, roughness: 0.8 },
+        },
+        children: [],
+      },
+      "frame3-right": {
+        type: "Box",
+        props: {
+          position: [1.075, 0, 0],
+          rotation: null,
+          scale: null,
+          width: 0.15,
+          height: 3.25,
+          depth: 0.15,
+          material: { color: "#6B4423", metalness: 0.1, roughness: 0.8 },
+        },
+        children: [],
+      },
+      "portal3-mesh": {
+        type: "Plane",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          width: 2,
+          height: 3,
+        },
+        children: ["portal3-mat"],
+      },
+      "portal3-mat": {
+        type: "MeshPortalMaterial",
+        props: { blend: 0, blur: 0.5, resolution: 512 },
+        children: [
+          "p3-env",
+          "p3-ambient",
+          "p3-sun",
+          "p3-tree1",
+          "p3-tree2",
+          "p3-tree3",
+          "p3-tree4",
+          "p3-tree5",
+          "p3-ground",
+          "p3-fireflies",
+        ],
+      },
+      "p3-env": {
+        type: "Environment",
+        props: { preset: "forest", background: false, blur: 0, intensity: 0.8 },
+        children: [],
+      },
+      "p3-ambient": {
+        type: "AmbientLight",
+        props: { color: "#334422", intensity: 0.4 },
+        children: [],
+      },
+      "p3-sun": {
+        type: "DirectionalLight",
+        props: {
+          position: [-3, 8, 2],
+          rotation: null,
+          scale: null,
+          color: "#aaffaa",
+          intensity: 1.5,
+          castShadow: true,
+        },
+        children: [],
+      },
+      "p3-tree1": {
+        type: "Group",
+        props: { position: [-2, -2, -4], rotation: null, scale: null },
+        children: ["p3-t1-trunk", "p3-t1-leaves"],
+      },
+      "p3-t1-trunk": {
+        type: "Cylinder",
+        props: {
+          position: [0, 0.6, 0],
+          rotation: null,
+          scale: null,
+          radiusTop: 0.08,
+          radiusBottom: 0.12,
+          height: 1.2,
+          radialSegments: 8,
+          material: { color: "#4a3520", roughness: 0.9 },
+        },
+        children: [],
+      },
+      "p3-t1-leaves": {
+        type: "Cone",
+        props: {
+          position: [0, 1.8, 0],
+          rotation: null,
+          scale: null,
+          radius: 0.6,
+          height: 1.5,
+          radialSegments: 8,
+          material: { color: "#2d5a1e", roughness: 0.8 },
+        },
+        children: [],
+      },
+      "p3-tree2": {
+        type: "Group",
+        props: { position: [1.5, -2, -6], rotation: null, scale: null },
+        children: ["p3-t2-trunk", "p3-t2-leaves"],
+      },
+      "p3-t2-trunk": {
+        type: "Cylinder",
+        props: {
+          position: [0, 0.8, 0],
+          rotation: null,
+          scale: null,
+          radiusTop: 0.1,
+          radiusBottom: 0.15,
+          height: 1.6,
+          radialSegments: 8,
+          material: { color: "#3d2b15", roughness: 0.9 },
+        },
+        children: [],
+      },
+      "p3-t2-leaves": {
+        type: "Cone",
+        props: {
+          position: [0, 2.3, 0],
+          rotation: null,
+          scale: null,
+          radius: 0.8,
+          height: 2,
+          radialSegments: 8,
+          material: { color: "#1e4a10", roughness: 0.8 },
+        },
+        children: [],
+      },
+      "p3-tree3": {
+        type: "Group",
+        props: { position: [-0.5, -2, -3], rotation: null, scale: null },
+        children: ["p3-t3-trunk", "p3-t3-leaves"],
+      },
+      "p3-t3-trunk": {
+        type: "Cylinder",
+        props: {
+          position: [0, 0.5, 0],
+          rotation: null,
+          scale: null,
+          radiusTop: 0.06,
+          radiusBottom: 0.1,
+          height: 1,
+          radialSegments: 8,
+          material: { color: "#4a3520", roughness: 0.9 },
+        },
+        children: [],
+      },
+      "p3-t3-leaves": {
+        type: "Cone",
+        props: {
+          position: [0, 1.5, 0],
+          rotation: null,
+          scale: null,
+          radius: 0.5,
+          height: 1.2,
+          radialSegments: 8,
+          material: { color: "#3a6b2a", roughness: 0.8 },
+        },
+        children: [],
+      },
+      "p3-tree4": {
+        type: "Group",
+        props: { position: [3, -2, -8], rotation: null, scale: null },
+        children: ["p3-t4-trunk", "p3-t4-leaves"],
+      },
+      "p3-t4-trunk": {
+        type: "Cylinder",
+        props: {
+          position: [0, 1, 0],
+          rotation: null,
+          scale: null,
+          radiusTop: 0.12,
+          radiusBottom: 0.18,
+          height: 2,
+          radialSegments: 8,
+          material: { color: "#3d2b15", roughness: 0.9 },
+        },
+        children: [],
+      },
+      "p3-t4-leaves": {
+        type: "Cone",
+        props: {
+          position: [0, 2.8, 0],
+          rotation: null,
+          scale: null,
+          radius: 1,
+          height: 2.5,
+          radialSegments: 8,
+          material: { color: "#2d5a1e", roughness: 0.8 },
+        },
+        children: [],
+      },
+      "p3-tree5": {
+        type: "Group",
+        props: { position: [-3.5, -2, -7], rotation: null, scale: null },
+        children: ["p3-t5-trunk", "p3-t5-leaves"],
+      },
+      "p3-t5-trunk": {
+        type: "Cylinder",
+        props: {
+          position: [0, 0.7, 0],
+          rotation: null,
+          scale: null,
+          radiusTop: 0.09,
+          radiusBottom: 0.13,
+          height: 1.4,
+          radialSegments: 8,
+          material: { color: "#4a3520", roughness: 0.9 },
+        },
+        children: [],
+      },
+      "p3-t5-leaves": {
+        type: "Cone",
+        props: {
+          position: [0, 2, 0],
+          rotation: null,
+          scale: null,
+          radius: 0.7,
+          height: 1.8,
+          radialSegments: 8,
+          material: { color: "#1e4a10", roughness: 0.8 },
+        },
+        children: [],
+      },
+      "p3-ground": {
+        type: "Plane",
+        props: {
+          position: [0, -2, 0],
+          rotation: [-1.5708, 0, 0],
+          scale: null,
+          width: 30,
+          height: 30,
+          material: { color: "#3a5a2a", roughness: 1 },
+        },
+        children: [],
+      },
+      "p3-fireflies": {
+        type: "Sparkles",
+        props: {
+          position: [0, 0, -5],
+          rotation: null,
+          scale: [6, 4, 6],
+          count: 80,
+          speed: 0.3,
+          opacity: 0.7,
+          color: "#aaff66",
+          size: 1.5,
+          noise: 2,
+        },
+        children: [],
+      },
+
+      "gallery-sparkles": {
+        type: "Sparkles",
+        props: {
+          position: [0, 3, 0],
+          rotation: null,
+          scale: [12, 5, 10],
+          count: 40,
+          speed: 0.05,
+          opacity: 0.2,
+          color: "#ffffff",
+          size: 0.3,
+          noise: null,
+        },
+        children: [],
+      },
+      post: {
+        type: "EffectComposer",
+        props: { enabled: true, multisampling: 8 },
+        children: ["bloom", "vignette"],
+      },
+      bloom: {
+        type: "Bloom",
+        props: {
+          intensity: 0.6,
+          luminanceThreshold: 0.3,
+          luminanceSmoothing: null,
+          mipmapBlur: true,
+        },
+        children: [],
+      },
+      vignette: {
+        type: "Vignette",
+        props: { offset: 0.4, darkness: 0.4 },
+        children: [],
+      },
+      controls: {
+        type: "OrbitControls",
+        props: {
+          enableDamping: true,
+          dampingFactor: null,
+          enableZoom: true,
+          enablePan: null,
+          enableRotate: true,
+          minDistance: 4,
+          maxDistance: 16,
+          minPolarAngle: null,
+          maxPolarAngle: null,
+          autoRotate: true,
+          autoRotateSpeed: 0.3,
+          target: [0, 1.8, -2],
+        },
+        children: [],
+      },
+    },
+  },
+};

examples/react-three-fiber/app/scenes/product-showroom.ts

@@ -0,0 +1,455 @@
+import type { Scene } from "./_helpers";
+
+export const productShowroom: Scene = {
+  name: "Product Showroom",
+  description:
+    "Sleek glass torus knot on a pedestal with studio lighting, reflections, and contact shadows",
+  spec: {
+    root: "scene",
+    elements: {
+      scene: {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "camera",
+          "env",
+          "backdrop",
+          "ambient",
+          "key-light",
+          "fill-light",
+          "rim-light",
+          "accent-light",
+          "pedestal",
+          "hero-float",
+          "accent1",
+          "accent2",
+          "accent3",
+          "floor",
+          "shadows",
+          "sparkles",
+          "fx",
+          "controls",
+        ],
+      },
+      camera: {
+        type: "PerspectiveCamera",
+        props: {
+          position: [0, 2, 6],
+          rotation: null,
+          scale: null,
+          fov: 40,
+          near: null,
+          far: null,
+          makeDefault: true,
+        },
+        children: [],
+      },
+      env: {
+        type: "Environment",
+        props: {
+          preset: "studio",
+          background: false,
+          blur: 0.5,
+          intensity: 0.8,
+        },
+        children: [],
+      },
+      backdrop: {
+        type: "Backdrop",
+        props: {
+          position: [0, -0.5, -3],
+          rotation: null,
+          scale: [25, 10, 8],
+          floor: 0.3,
+          segments: 30,
+          receiveShadow: true,
+        },
+        children: [],
+      },
+      ambient: {
+        type: "AmbientLight",
+        props: { color: "#e8e0f0", intensity: 0.25 },
+        children: [],
+      },
+      "key-light": {
+        type: "SpotLight",
+        props: {
+          position: [5, 8, 3],
+          rotation: null,
+          scale: null,
+          color: "#ffffff",
+          intensity: 80,
+          distance: 25,
+          decay: null,
+          angle: 0.5,
+          penumbra: 0.8,
+          castShadow: true,
+        },
+        children: [],
+      },
+      "fill-light": {
+        type: "SpotLight",
+        props: {
+          position: [-4, 5, 2],
+          rotation: null,
+          scale: null,
+          color: "#aaccff",
+          intensity: 30,
+          distance: 20,
+          decay: null,
+          angle: 0.6,
+          penumbra: 1,
+          castShadow: false,
+        },
+        children: [],
+      },
+      "rim-light": {
+        type: "SpotLight",
+        props: {
+          position: [0, 3, -5],
+          rotation: null,
+          scale: null,
+          color: "#ffddcc",
+          intensity: 40,
+          distance: 15,
+          decay: null,
+          angle: 0.4,
+          penumbra: 0.5,
+          castShadow: false,
+        },
+        children: [],
+      },
+      "accent-light": {
+        type: "PointLight",
+        props: {
+          position: [0, 0.5, 0],
+          rotation: null,
+          scale: null,
+          color: "#ffffff",
+          intensity: 5,
+          distance: 4,
+          decay: null,
+          castShadow: null,
+        },
+        children: [],
+      },
+      pedestal: {
+        type: "Group",
+        props: { position: [0, 0, 0], rotation: null, scale: null },
+        children: ["ped-base", "ped-column", "ped-top"],
+      },
+      "ped-base": {
+        type: "Cylinder",
+        props: {
+          position: [0, 0.05, 0],
+          rotation: null,
+          scale: null,
+          radiusTop: 1.2,
+          radiusBottom: 1.3,
+          height: 0.1,
+          radialSegments: 48,
+          castShadow: null,
+          receiveShadow: null,
+          material: {
+            color: "#1a1a1a",
+            metalness: 0.9,
+            roughness: 0.1,
+          },
+        },
+        children: [],
+      },
+      "ped-column": {
+        type: "Cylinder",
+        props: {
+          position: [0, 0.45, 0],
+          rotation: null,
+          scale: null,
+          radiusTop: 0.6,
+          radiusBottom: 0.8,
+          height: 0.7,
+          radialSegments: 48,
+          castShadow: null,
+          receiveShadow: null,
+          material: {
+            color: "#111111",
+            metalness: 0.95,
+            roughness: 0.05,
+          },
+        },
+        children: [],
+      },
+      "ped-top": {
+        type: "Cylinder",
+        props: {
+          position: [0, 0.85, 0],
+          rotation: null,
+          scale: null,
+          radiusTop: 0.9,
+          radiusBottom: 0.7,
+          height: 0.1,
+          radialSegments: 48,
+          castShadow: null,
+          receiveShadow: null,
+          material: {
+            color: "#1a1a1a",
+            metalness: 0.9,
+            roughness: 0.1,
+          },
+        },
+        children: [],
+      },
+      "hero-float": {
+        type: "Float",
+        props: {
+          position: [0, 2.2, 0],
+          rotation: null,
+          scale: null,
+          speed: 1.5,
+          rotationIntensity: 0.3,
+          floatIntensity: 0.4,
+          enabled: true,
+        },
+        children: ["hero-spin"],
+      },
+      "hero-spin": {
+        type: "Spin",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          speed: 0.3,
+          axis: "y",
+        },
+        children: ["hero-object"],
+      },
+      "hero-object": {
+        type: "TorusKnot",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.6,
+          tube: 0.22,
+          p: 2,
+          q: 3,
+          tubularSegments: 128,
+          radialSegments: 24,
+          material: {
+            color: "#ffffff",
+            metalness: 1,
+            roughness: 0,
+          },
+        },
+        children: [],
+      },
+      accent1: {
+        type: "Float",
+        props: {
+          position: [-1.5, 1.8, 0.5],
+          rotation: null,
+          scale: null,
+          speed: 2,
+          rotationIntensity: 0.5,
+          floatIntensity: 1.2,
+          enabled: true,
+        },
+        children: ["accent1-body"],
+      },
+      "accent1-body": {
+        type: "GlassSphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.15,
+          widthSegments: null,
+          heightSegments: null,
+          color: "#eeeeff",
+          transmission: 1,
+          thickness: 0.3,
+          roughness: 0,
+          chromaticAberration: 0.06,
+          ior: 1.5,
+          distortion: null,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      accent2: {
+        type: "Float",
+        props: {
+          position: [1.2, 2.5, -0.8],
+          rotation: null,
+          scale: null,
+          speed: 1.8,
+          rotationIntensity: 0.4,
+          floatIntensity: 1.5,
+          enabled: true,
+        },
+        children: ["accent2-body"],
+      },
+      "accent2-body": {
+        type: "GlassSphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.1,
+          widthSegments: null,
+          heightSegments: null,
+          color: "#ffeeff",
+          transmission: 1,
+          thickness: 0.2,
+          roughness: 0,
+          chromaticAberration: 0.08,
+          ior: 1.6,
+          distortion: null,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      accent3: {
+        type: "Float",
+        props: {
+          position: [0.8, 1.5, 1.2],
+          rotation: null,
+          scale: null,
+          speed: 2.2,
+          rotationIntensity: 0.6,
+          floatIntensity: 0.8,
+          enabled: true,
+        },
+        children: ["accent3-body"],
+      },
+      "accent3-body": {
+        type: "GlassSphere",
+        props: {
+          position: null,
+          rotation: null,
+          scale: null,
+          castShadow: null,
+          receiveShadow: null,
+          radius: 0.12,
+          widthSegments: null,
+          heightSegments: null,
+          color: "#eeffee",
+          transmission: 1,
+          thickness: 0.25,
+          roughness: 0,
+          chromaticAberration: 0.05,
+          ior: 1.4,
+          distortion: null,
+          distortionScale: null,
+          temporalDistortion: null,
+          samples: 6,
+          resolution: 128,
+        },
+        children: [],
+      },
+      floor: {
+        type: "ReflectorPlane",
+        props: {
+          position: [0, -0.5, 0],
+          rotation: [-1.5708, 0, 0],
+          scale: null,
+          width: 25,
+          height: 25,
+          color: "#0a0a0a",
+          resolution: 1024,
+          blur: 300,
+          mirror: 0.6,
+          mixBlur: 8,
+          mixStrength: 2,
+          depthScale: 0.2,
+          metalness: 0.8,
+          roughness: 0.3,
+        },
+        children: [],
+      },
+      shadows: {
+        type: "ContactShadows",
+        props: {
+          position: [0, -0.49, 0],
+          rotation: null,
+          scale: null,
+          opacity: 0.5,
+          width: 10,
+          height: 10,
+          blur: 2,
+          near: null,
+          far: 5,
+          smooth: true,
+          resolution: 512,
+          frames: null,
+          color: "#000000",
+        },
+        children: [],
+      },
+      sparkles: {
+        type: "Sparkles",
+        props: {
+          position: [0, 2, 0],
+          rotation: null,
+          scale: [6, 4, 6],
+          count: 30,
+          speed: 0.05,
+          opacity: 0.15,
+          color: "#ffffff",
+          size: 0.3,
+          noise: 0.5,
+        },
+        children: [],
+      },
+      fx: {
+        type: "EffectComposer",
+        props: { enabled: true, multisampling: 8 },
+        children: ["bloom", "vignette"],
+      },
+      bloom: {
+        type: "Bloom",
+        props: {
+          intensity: 0.5,
+          luminanceThreshold: 0.3,
+          luminanceSmoothing: 0.4,
+          mipmapBlur: true,
+        },
+        children: [],
+      },
+      vignette: {
+        type: "Vignette",
+        props: { offset: 0.3, darkness: 0.5 },
+        children: [],
+      },
+      controls: {
+        type: "OrbitControls",
+        props: {
+          enableDamping: true,
+          dampingFactor: null,
+          enableZoom: null,
+          enablePan: null,
+          enableRotate: null,
+          minDistance: 3,
+          maxDistance: 12,
+          minPolarAngle: 0.3,
+          maxPolarAngle: 1.4,
+          autoRotate: true,
+          autoRotateSpeed: 1,
+          target: [0, 1.5, 0],
+        },
+        children: [],
+      },
+    },
+  },
+};

examples/react-three-fiber/app/scenes/starfield.ts

@@ -0,0 +1,149 @@
+import type { Scene } from "./_helpers";
+
+export const starfield: Scene = {
+  name: "Starfield",
+  description:
+    "Classic Windows starfield screensaver -- flying through stars at warp speed",
+  spec: {
+    root: "scene",
+    elements: {
+      scene: {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "cam",
+          "ambient",
+          "tunnel",
+          "stars1",
+          "stars2",
+          "sparkle-dust",
+          "shake",
+          "post",
+          "controls",
+        ],
+      },
+      cam: {
+        type: "PerspectiveCamera",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          fov: 75,
+          near: 0.1,
+          far: 1000,
+          makeDefault: true,
+        },
+        children: [],
+      },
+      ambient: {
+        type: "AmbientLight",
+        props: { color: "#111122", intensity: 0.15 },
+        children: [],
+      },
+      tunnel: {
+        type: "WarpTunnel",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          ringCount: 120,
+          radius: 4,
+          length: 40,
+          speed: 12,
+          tubeRadius: 0.008,
+          color1: "#ffffff",
+          color2: "#aabbff",
+        },
+        children: [],
+      },
+      stars1: {
+        type: "Stars",
+        props: {
+          radius: 50,
+          depth: 80,
+          count: 10000,
+          factor: 6,
+          saturation: 0,
+          fade: true,
+          speed: 3,
+        },
+        children: [],
+      },
+      stars2: {
+        type: "Stars",
+        props: {
+          radius: 30,
+          depth: 50,
+          count: 5000,
+          factor: 3,
+          saturation: 0.1,
+          fade: true,
+          speed: 5,
+        },
+        children: [],
+      },
+      "sparkle-dust": {
+        type: "Sparkles",
+        props: {
+          position: [0, 0, -5],
+          rotation: null,
+          scale: [8, 8, 30],
+          count: 300,
+          speed: 2,
+          opacity: 0.6,
+          color: "#ffffff",
+          size: 1,
+          noise: 4,
+        },
+        children: [],
+      },
+      shake: {
+        type: "CameraShake",
+        props: {
+          intensity: 0.15,
+          maxYaw: 0.02,
+          maxPitch: 0.02,
+          maxRoll: 0.01,
+        },
+        children: [],
+      },
+      post: {
+        type: "EffectComposer",
+        props: { enabled: true, multisampling: 8 },
+        children: ["bloom", "vignette"],
+      },
+      bloom: {
+        type: "Bloom",
+        props: {
+          intensity: 1.5,
+          luminanceThreshold: 0.15,
+          luminanceSmoothing: null,
+          mipmapBlur: true,
+        },
+        children: [],
+      },
+      vignette: {
+        type: "Vignette",
+        props: { offset: 0.1, darkness: 0.9 },
+        children: [],
+      },
+      controls: {
+        type: "OrbitControls",
+        props: {
+          enableDamping: null,
+          dampingFactor: null,
+          enableZoom: false,
+          enablePan: false,
+          enableRotate: false,
+          minDistance: null,
+          maxDistance: null,
+          minPolarAngle: null,
+          maxPolarAngle: null,
+          autoRotate: false,
+          autoRotateSpeed: null,
+        },
+        children: [],
+      },
+    },
+  },
+};

examples/react-three-fiber/app/scenes/storm-cell.ts

@@ -0,0 +1,295 @@
+import type { Scene } from "./_helpers";
+
+export const stormCell: Scene = {
+  name: "Storm Cell",
+  description:
+    "Dark violent thunderstorm -- spinning cloud masses, pulsing lightning, rain particles, camera shake",
+  spec: {
+    root: "scene",
+    elements: {
+      scene: {
+        type: "Group",
+        props: { position: null, rotation: null, scale: null },
+        children: [
+          "sky",
+          "ambient",
+          "sun",
+          "cloud-spin-1",
+          "cloud-spin-2",
+          "cloud-spin-3",
+          "lightning-1-pulse",
+          "lightning-2-pulse",
+          "lightning-3-pulse",
+          "rain",
+          "shake",
+          "post",
+          "fog",
+          "controls",
+        ],
+      },
+      sky: {
+        type: "Sky",
+        props: {
+          distance: null,
+          sunPosition: [10, 2, 0],
+          inclination: null,
+          azimuth: null,
+          turbidity: 20,
+          rayleigh: 0.5,
+          mieCoefficient: 0.01,
+          mieDirectionalG: 0.9,
+        },
+        children: [],
+      },
+      ambient: {
+        type: "AmbientLight",
+        props: { color: "#111122", intensity: 0.15 },
+        children: [],
+      },
+      sun: {
+        type: "DirectionalLight",
+        props: {
+          position: [10, 3, 0],
+          rotation: null,
+          scale: null,
+          color: "#334466",
+          intensity: 0.5,
+          castShadow: true,
+        },
+        children: [],
+      },
+      "cloud-spin-1": {
+        type: "Spin",
+        props: {
+          position: [0, 4, 0],
+          rotation: null,
+          scale: null,
+          speed: 0.08,
+          axis: "y",
+        },
+        children: ["cloud-1"],
+      },
+      "cloud-1": {
+        type: "Cloud",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          seed: 1,
+          segments: 40,
+          bounds: [25, 3, 25],
+          volume: 15,
+          speed: 0.3,
+          fade: 20,
+          opacity: 0.9,
+          color: "#222233",
+          growth: 10,
+        },
+        children: [],
+      },
+      "cloud-spin-2": {
+        type: "Spin",
+        props: {
+          position: [0, 6, -3],
+          rotation: null,
+          scale: null,
+          speed: -0.05,
+          axis: "y",
+        },
+        children: ["cloud-2"],
+      },
+      "cloud-2": {
+        type: "Cloud",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          seed: 42,
+          segments: 30,
+          bounds: [20, 2, 20],
+          volume: 12,
+          speed: 0.2,
+          fade: 15,
+          opacity: 0.7,
+          color: "#1a1a2a",
+          growth: 8,
+        },
+        children: [],
+      },
+      "cloud-spin-3": {
+        type: "Spin",
+        props: {
+          position: [0, 8, 2],
+          rotation: null,
+          scale: null,
+          speed: 0.03,
+          axis: "y",
+        },
+        children: ["cloud-3"],
+      },
+      "cloud-3": {
+        type: "Cloud",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          seed: 99,
+          segments: 25,
+          bounds: [30, 2, 30],
+          volume: 10,
+          speed: 0.15,
+          fade: 25,
+          opacity: 0.5,
+          color: "#2a2a3a",
+          growth: 6,
+        },
+        children: [],
+      },
+      "lightning-1-pulse": {
+        type: "Pulse",
+        props: {
+          position: [2, 5, -1],
+          rotation: null,
+          scale: null,
+          speed: 3,
+          min: 0,
+          max: 1,
+        },
+        children: ["lightning-1"],
+      },
+      "lightning-1": {
+        type: "PointLight",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          color: "#aabbff",
+          intensity: 80,
+          distance: 30,
+          decay: 2,
+          castShadow: false,
+        },
+        children: [],
+      },
+      "lightning-2-pulse": {
+        type: "Pulse",
+        props: {
+          position: [-3, 6, 3],
+          rotation: null,
+          scale: null,
+          speed: 4.5,
+          min: 0,
+          max: 1,
+        },
+        children: ["lightning-2"],
+      },
+      "lightning-2": {
+        type: "PointLight",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          color: "#aaccff",
+          intensity: 60,
+          distance: 25,
+          decay: 2,
+          castShadow: false,
+        },
+        children: [],
+      },
+      "lightning-3-pulse": {
+        type: "Pulse",
+        props: {
+          position: [0, 4, -4],
+          rotation: null,
+          scale: null,
+          speed: 2.5,
+          min: 0,
+          max: 1,
+        },
+        children: ["lightning-3"],
+      },
+      "lightning-3": {
+        type: "PointLight",
+        props: {
+          position: [0, 0, 0],
+          rotation: null,
+          scale: null,
+          color: "#99bbff",
+          intensity: 40,
+          distance: 20,
+          decay: 2,
+          castShadow: false,
+        },
+        children: [],
+      },
+      rain: {
+        type: "Sparkles",
+        props: {
+          position: [0, 5, 0],
+          rotation: null,
+          scale: [20, 15, 20],
+          count: 500,
+          speed: 5,
+          opacity: 0.4,
+          color: "#6688aa",
+          size: 0.5,
+          noise: 0.5,
+        },
+        children: [],
+      },
+      shake: {
+        type: "CameraShake",
+        props: {
+          intensity: 0.2,
+          maxYaw: 0.02,
+          maxPitch: 0.03,
+          maxRoll: 0.01,
+        },
+        children: [],
+      },
+      post: {
+        type: "EffectComposer",
+        props: { enabled: true, multisampling: 8 },
+        children: ["bloom", "vignette"],
+      },
+      bloom: {
+        type: "Bloom",
+        props: {
+          intensity: 0.8,
+          luminanceThreshold: 0.3,
+          luminanceSmoothing: null,
+          mipmapBlur: true,
+        },
+        children: [],
+      },
+      vignette: {
+        type: "Vignette",
+        props: { offset: 0.3, darkness: 0.8 },
+        children: [],
+      },
+      fog: {
+        type: "Fog",
+        props: { color: "#0a0a15", near: 5, far: 30 },
+        children: [],
+      },
+      controls: {
+        type: "OrbitControls",
+        props: {
+          enableDamping: null,
+          dampingFactor: null,
+          enableZoom: true,
+          enablePan: null,
+          enableRotate: true,
+          minDistance: 3,
+          maxDistance: 20,
+          minPolarAngle: 0.2,
+          maxPolarAngle: 1.3,
+          autoRotate: true,
+          autoRotateSpeed: 0.1,
+        },
+        children: [],
+      },
+    },
+  },
+};

examples/react-three-fiber/eslint.config.js

@@ -0,0 +1,12 @@
+import { nextJsConfig } from "@internal/eslint-config/next-js";
+
+/** @type {import("eslint").Linter.Config[]} */
+export default [
+  ...nextJsConfig,
+  {
+    rules: {
+      "react/prop-types": "off",
+      "react/no-unknown-property": "off",
+    },
+  },
+];

examples/react-three-fiber/next-env.d.ts

@@ -0,0 +1,6 @@
+/// <reference types="next" />
+/// <reference types="next/image-types/global" />
+import "./.next/dev/types/routes.d.ts";
+
+// NOTE: This file should not be edited
+// see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

examples/react-three-fiber/next.config.ts

@@ -0,0 +1,12 @@
+import type { NextConfig } from "next";
+
+const nextConfig: NextConfig = {
+  transpilePackages: [
+    "@json-render/core",
+    "@json-render/react",
+    "@json-render/react-three-fiber",
+    "three",
+  ],
+};
+
+export default nextConfig;

examples/react-three-fiber/package.json

@@ -0,0 +1,35 @@
+{
+  "name": "example-react-three-fiber",
+  "version": "0.1.9",
+  "type": "module",
+  "private": true,
+  "scripts": {
+    "predev": "command -v portless >/dev/null 2>&1 || (echo '\\nportless is required but not installed. Run: npm i -g portless\\nSee: https://github.com/vercel-labs/portless\\n' && exit 1)",
+    "dev": "portless react-three-fiber-demo.json-render next dev --turbopack",
+    "build": "next build",
+    "start": "next start",
+    "lint": "eslint --max-warnings 0",
+    "check-types": "tsc --noEmit"
+  },
+  "dependencies": {
+    "@json-render/core": "workspace:*",
+    "@json-render/react": "workspace:*",
+    "@json-render/react-three-fiber": "workspace:*",
+    "@react-three/drei": "^10.7.7",
+    "@react-three/fiber": "^9.5.0",
+    "next": "16.1.6",
+    "react": "19.2.4",
+    "react-dom": "19.2.4",
+    "three": "^0.183.2",
+    "zod": "4.3.6"
+  },
+  "devDependencies": {
+    "@internal/eslint-config": "workspace:*",
+    "@types/node": "^22.10.0",
+    "@types/react": "19.2.3",
+    "@types/react-dom": "19.2.3",
+    "@types/three": "^0.183.1",
+    "eslint": "^9.39.1",
+    "typescript": "^5.7.2"
+  }
+}

examples/react-three-fiber/tsconfig.json

@@ -0,0 +1,13 @@
+{
+  "extends": "../../packages/typescript-config/nextjs.json",
+  "compilerOptions": {
+    "plugins": [{ "name": "next" }],
+    "declaration": false,
+    "declarationMap": false,
+    "paths": {
+      "@/*": ["./*"]
+    }
+  },
+  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
+  "exclude": ["node_modules"]
+}

examples/remotion/CHANGELOG.md

@@ -1,5 +1,29 @@
 # example-remotion
 
+## 0.1.9
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/remotion@0.14.1
+
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/remotion@0.14.0
+
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/remotion@0.13.0
+
 ## 0.1.6
 
 ### Patch Changes

examples/remotion/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-remotion",
-  "version": "0.1.6",
+  "version": "0.1.9",
   "type": "module",
   "private": true,
   "scripts": {

examples/solid/CHANGELOG.md

@@ -0,0 +1,25 @@
+# example-solid
+
+## 0.1.3
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/solid@0.14.1
+
+## 0.1.2
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/solid@0.14.0
+
+## 0.1.1
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/solid@0.13.0

examples/solid/index.html

@@ -0,0 +1,12 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>json-render solid example</title>
+  </head>
+  <body>
+    <div id="app"></div>
+    <script type="module" src="/src/index.tsx"></script>
+  </body>
+</html>

examples/solid/package.json

@@ -0,0 +1,23 @@
+{
+  "name": "example-solid",
+  "version": "0.1.3",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "portless solid-demo.json-render vite",
+    "build": "vite build",
+    "preview": "vite preview",
+    "check-types": "tsc --noEmit"
+  },
+  "dependencies": {
+    "@json-render/core": "workspace:*",
+    "@json-render/solid": "workspace:*",
+    "solid-js": "^1.9.11",
+    "zod": "^4.3.6"
+  },
+  "devDependencies": {
+    "typescript": "^5.9.3",
+    "vite": "^7.3.1",
+    "vite-plugin-solid": "^2.11.10"
+  }
+}

examples/solid/src/App.tsx

@@ -0,0 +1,13 @@
+import { StateProvider } from "@json-render/solid";
+import { demoSpec } from "./lib/spec";
+import { DemoRenderer } from "./DemoRenderer";
+
+export function App() {
+  const initialState = demoSpec.state ?? {};
+
+  return (
+    <StateProvider initialState={initialState}>
+      <DemoRenderer />
+    </StateProvider>
+  );
+}

examples/solid/src/DemoRenderer.tsx

@@ -0,0 +1,51 @@
+import {
+  ActionProvider,
+  ValidationProvider,
+  VisibilityProvider,
+  Renderer,
+  useStateStore,
+} from "@json-render/solid";
+import { demoSpec } from "./lib/spec";
+import { registry } from "./lib/registry";
+
+export function DemoRenderer() {
+  const stateStore = useStateStore();
+
+  const handlers = {
+    increment: async () => {
+      stateStore.set("/count", Number(stateStore.get("/count") || 0) + 1);
+    },
+    decrement: async () => {
+      stateStore.set(
+        "/count",
+        Math.max(0, Number(stateStore.get("/count") || 0) - 1),
+      );
+    },
+    reset: async () => {
+      stateStore.set("/count", 0);
+    },
+    toggleItem: async (params: Record<string, unknown>) => {
+      const index = params.index as number;
+      const todos = (
+        stateStore.get("/todos") as Array<{
+          id: number;
+          title: string;
+          completed: boolean;
+        }>
+      ).map((item, i) =>
+        i === index ? { ...item, completed: !item.completed } : item,
+      );
+      stateStore.set("/todos", todos);
+    },
+  };
+
+  return (
+    <ActionProvider handlers={handlers}>
+      <VisibilityProvider>
+        <ValidationProvider>
+          <Renderer spec={demoSpec} registry={registry} />
+        </ValidationProvider>
+      </VisibilityProvider>
+    </ActionProvider>
+  );
+}

examples/solid/src/app.css

@@ -0,0 +1,13 @@
+* {
+  box-sizing: border-box;
+  margin: 0;
+  padding: 0;
+}
+
+body {
+  font-family:
+    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
+  background: #f9fafb;
+  color: #111827;
+  min-height: 100vh;
+}

examples/solid/src/index.tsx

@@ -0,0 +1,5 @@
+import { render } from "solid-js/web";
+import { App } from "./App";
+import "./app.css";
+
+render(() => <App />, document.getElementById("app")!);

examples/solid/src/lib/catalog.ts

@@ -0,0 +1,90 @@
+import { schema } from "@json-render/solid/schema";
+import { z } from "zod";
+
+export const catalog = schema.createCatalog({
+  components: {
+    Stack: {
+      props: z.object({
+        gap: z.number().optional(),
+        padding: z.number().optional(),
+        direction: z.enum(["vertical", "horizontal"]).optional(),
+        align: z.enum(["start", "center", "end"]).optional(),
+      }),
+      slots: ["default"],
+      description:
+        "Layout container that stacks children vertically or horizontally",
+    },
+    Card: {
+      props: z.object({
+        title: z.string().optional(),
+        subtitle: z.string().optional(),
+      }),
+      slots: ["default"],
+      description: "A card container with optional title and subtitle",
+    },
+    Text: {
+      props: z.object({
+        content: z.string(),
+        size: z.enum(["sm", "md", "lg", "xl"]).optional(),
+        weight: z.enum(["normal", "medium", "bold"]).optional(),
+        color: z.string().optional(),
+      }),
+      slots: [],
+      description: "Displays a text string",
+    },
+    Button: {
+      props: z.object({
+        label: z.string(),
+        variant: z.enum(["primary", "secondary", "danger"]).optional(),
+        disabled: z.boolean().optional(),
+      }),
+      slots: [],
+      description: "A clickable button that emits a 'press' event",
+    },
+    Badge: {
+      props: z.object({
+        label: z.string(),
+        color: z.string().optional(),
+      }),
+      slots: [],
+      description: "A small badge/tag label",
+    },
+    ListItem: {
+      props: z.object({
+        title: z.string(),
+        description: z.string().optional(),
+        completed: z.boolean().optional(),
+      }),
+      slots: [],
+      description: "A single item in a list",
+    },
+    Input: {
+      props: z.object({
+        value: z.string().optional(),
+        placeholder: z.string().optional(),
+      }),
+      slots: [],
+      description: "A text input field that supports two-way state binding",
+    },
+  },
+  actions: {
+    increment: {
+      params: z.object({}),
+      description: "Increment the counter by 1",
+    },
+    decrement: {
+      params: z.object({}),
+      description: "Decrement the counter by 1",
+    },
+    reset: {
+      params: z.object({}),
+      description: "Reset the counter to 0",
+    },
+    toggleItem: {
+      params: z.object({
+        index: z.number(),
+      }),
+      description: "Toggle the completed state of a todo item",
+    },
+  },
+});

examples/solid/src/lib/components/Badge.tsx

@@ -0,0 +1,27 @@
+import type { BaseComponentProps } from "@json-render/solid";
+
+interface BadgeProps {
+  label: string;
+  color?: string;
+}
+
+export function Badge(renderProps: BaseComponentProps<BadgeProps>) {
+  const color = () => renderProps.props.color ?? "#6b7280";
+
+  return (
+    <span
+      style={{
+        display: "inline-block",
+        padding: "4px 12px",
+        "border-radius": "9999px",
+        "font-size": "13px",
+        "font-weight": "500",
+        "background-color": `${color()}20`,
+        color: color(),
+        border: `1px solid ${color()}40`,
+      }}
+    >
+      {renderProps.props.label}
+    </span>
+  );
+}

examples/solid/src/lib/components/Button.tsx

@@ -0,0 +1,47 @@
+import type { BaseComponentProps } from "@json-render/solid";
+
+interface ButtonProps {
+  label: string;
+  variant?: "primary" | "secondary" | "danger";
+  disabled?: boolean;
+}
+
+const variantStyles: Record<string, Record<string, string>> = {
+  primary: {
+    background: "#2563eb",
+    color: "#ffffff",
+    border: "1px solid #2563eb",
+  },
+  secondary: {
+    background: "#f3f4f6",
+    color: "#374151",
+    border: "1px solid #d1d5db",
+  },
+  danger: {
+    background: "#fee2e2",
+    color: "#dc2626",
+    border: "1px solid #fca5a5",
+  },
+};
+
+export function Button(renderProps: BaseComponentProps<ButtonProps>) {
+  const variant = () => renderProps.props.variant ?? "primary";
+
+  return (
+    <button
+      disabled={renderProps.props.disabled}
+      onClick={() => renderProps.emit("press")}
+      style={{
+        padding: "8px 16px",
+        "border-radius": "8px",
+        "font-size": "14px",
+        "font-weight": "500",
+        cursor: renderProps.props.disabled ? "not-allowed" : "pointer",
+        opacity: renderProps.props.disabled ? "0.5" : "1",
+        ...variantStyles[variant()],
+      }}
+    >
+      {renderProps.props.label}
+    </button>
+  );
+}

examples/solid/src/lib/components/Card.tsx

@@ -0,0 +1,44 @@
+import type { BaseComponentProps } from "@json-render/solid";
+
+interface CardProps {
+  title?: string;
+  subtitle?: string;
+}
+
+export function Card(renderProps: BaseComponentProps<CardProps>) {
+  return (
+    <div
+      style={{
+        background: "#ffffff",
+        "border-radius": "12px",
+        border: "1px solid #e5e7eb",
+        padding: "20px",
+        "box-shadow": "0 1px 3px rgba(0,0,0,0.06)",
+      }}
+    >
+      {renderProps.props.title && (
+        <h2
+          style={{
+            "font-size": "18px",
+            "font-weight": "600",
+            "margin-bottom": renderProps.props.subtitle ? "4px" : "16px",
+          }}
+        >
+          {renderProps.props.title}
+        </h2>
+      )}
+      {renderProps.props.subtitle && (
+        <p
+          style={{
+            "font-size": "14px",
+            color: "#6b7280",
+            "margin-bottom": "16px",
+          }}
+        >
+          {renderProps.props.subtitle}
+        </p>
+      )}
+      {renderProps.children}
+    </div>
+  );
+}

examples/solid/src/lib/components/Input.tsx

@@ -0,0 +1,30 @@
+import type { BaseComponentProps } from "@json-render/solid";
+import { useBoundProp } from "@json-render/solid";
+
+interface InputProps {
+  value?: string;
+  placeholder?: string;
+}
+
+export function Input(renderProps: BaseComponentProps<InputProps>) {
+  const [value, setValue] = useBoundProp<string>(
+    renderProps.props.value,
+    renderProps.bindings?.value,
+  );
+
+  return (
+    <input
+      value={String(value ?? "")}
+      onInput={(e) => setValue(e.currentTarget.value)}
+      placeholder={renderProps.props.placeholder ?? ""}
+      style={{
+        padding: "8px 12px",
+        "border-radius": "8px",
+        border: "1px solid #d1d5db",
+        "font-size": "14px",
+        outline: "none",
+        width: "100%",
+      }}
+    />
+  );
+}

examples/solid/src/lib/components/ListItem.tsx

@@ -0,0 +1,55 @@
+import type { BaseComponentProps } from "@json-render/solid";
+
+interface ListItemProps {
+  title: string;
+  description?: string;
+  completed?: boolean;
+}
+
+export function ListItem(renderProps: BaseComponentProps<ListItemProps>) {
+  return (
+    <div
+      onClick={() => renderProps.emit("press")}
+      style={{
+        display: "flex",
+        "align-items": "center",
+        gap: "10px",
+        padding: "10px 12px",
+        "border-radius": "8px",
+        border: "1px solid #e5e7eb",
+        cursor: "pointer",
+        "user-select": "none",
+        background: renderProps.props.completed ? "#f0fdf4" : "#ffffff",
+      }}
+    >
+      <span
+        style={{
+          width: "22px",
+          height: "22px",
+          "border-radius": "6px",
+          border: renderProps.props.completed
+            ? "2px solid #22c55e"
+            : "2px solid #d1d5db",
+          display: "flex",
+          "align-items": "center",
+          "justify-content": "center",
+          "font-size": "13px",
+          color: "#22c55e",
+          "flex-shrink": "0",
+        }}
+      >
+        {renderProps.props.completed ? "\u2713" : ""}
+      </span>
+      <span
+        style={{
+          "text-decoration": renderProps.props.completed
+            ? "line-through"
+            : "none",
+          color: renderProps.props.completed ? "#9ca3af" : "#111827",
+        }}
+      >
+        {renderProps.props.title}
+      </span>
+    </div>
+  );
+}

examples/solid/src/lib/components/Stack.tsx

@@ -0,0 +1,27 @@
+import type { BaseComponentProps } from "@json-render/solid";
+
+interface StackProps {
+  gap?: number;
+  padding?: number;
+  direction?: "vertical" | "horizontal";
+  align?: "start" | "center" | "end";
+}
+
+export function Stack(renderProps: BaseComponentProps<StackProps>) {
+  return (
+    <div
+      style={{
+        display: "flex",
+        "flex-direction":
+          renderProps.props.direction === "horizontal" ? "row" : "column",
+        gap: renderProps.props.gap ? `${renderProps.props.gap}px` : undefined,
+        padding: renderProps.props.padding
+          ? `${renderProps.props.padding}px`
+          : undefined,
+        "align-items": renderProps.props.align,
+      }}
+    >
+      {renderProps.children}
+    </div>
+  );
+}

examples/solid/src/lib/components/Text.tsx

@@ -0,0 +1,35 @@
+import type { BaseComponentProps } from "@json-render/solid";
+
+interface TextProps {
+  content: string;
+  size?: "sm" | "md" | "lg" | "xl";
+  weight?: "normal" | "medium" | "bold";
+  color?: string;
+}
+
+const sizeMap: Record<string, string> = {
+  sm: "12px",
+  md: "14px",
+  lg: "18px",
+  xl: "24px",
+};
+
+const weightMap: Record<string, string> = {
+  normal: "400",
+  medium: "500",
+  bold: "700",
+};
+
+export function Text(renderProps: BaseComponentProps<TextProps>) {
+  return (
+    <span
+      style={{
+        "font-size": sizeMap[renderProps.props.size ?? "md"],
+        "font-weight": weightMap[renderProps.props.weight ?? "normal"],
+        color: renderProps.props.color,
+      }}
+    >
+      {String(renderProps.props.content ?? "")}
+    </span>
+  );
+}

examples/solid/src/lib/registry.tsx

@@ -0,0 +1,29 @@
+import { type Components, defineRegistry } from "@json-render/solid";
+import { catalog } from "./catalog";
+import { Stack } from "./components/Stack";
+import { Card } from "./components/Card";
+import { Text } from "./components/Text";
+import { Button } from "./components/Button";
+import { Badge } from "./components/Badge";
+import { ListItem } from "./components/ListItem";
+import { Input } from "./components/Input";
+
+const components: Components<typeof catalog> = {
+  Stack,
+  Card,
+  Text,
+  Button,
+  Badge,
+  ListItem,
+  Input,
+};
+
+export const { registry, handlers: makeHandlers } = defineRegistry(catalog, {
+  components,
+  actions: {
+    increment: async () => {},
+    decrement: async () => {},
+    reset: async () => {},
+    toggleItem: async () => {},
+  },
+});

examples/solid/src/lib/spec.ts

@@ -0,0 +1,130 @@
+import type { Spec } from "@json-render/core";
+
+export const demoSpec: Spec = {
+  root: "root",
+  state: {
+    count: 0,
+    name: "",
+    todos: [
+      { id: 1, title: "Learn SolidJS", completed: true },
+      { id: 2, title: "Try @json-render/solid", completed: false },
+      { id: 3, title: "Build something awesome", completed: false },
+    ],
+  },
+  elements: {
+    root: {
+      type: "Stack",
+      props: { gap: 24, padding: 24, direction: "vertical" },
+      children: [
+        "header",
+        "counter-card",
+        "milestone-badge",
+        "todos-card",
+        "input-card",
+      ],
+    },
+    header: {
+      type: "Text",
+      props: {
+        content: "@json-render/solid demo",
+        size: "xl",
+        weight: "bold",
+      },
+    },
+    "counter-card": {
+      type: "Card",
+      props: {
+        title: "Counter",
+        subtitle: "Click the buttons to change the count",
+      },
+      children: ["counter-body"],
+    },
+    "counter-body": {
+      type: "Stack",
+      props: { gap: 12, direction: "horizontal", align: "center" },
+      children: [
+        "decrement-btn",
+        "counter-value",
+        "increment-btn",
+        "reset-btn",
+      ],
+    },
+    "decrement-btn": {
+      type: "Button",
+      props: { label: "\u2212", variant: "secondary" },
+      on: { press: { action: "decrement" } },
+    },
+    "counter-value": {
+      type: "Text",
+      props: {
+        content: { $state: "/count" },
+        size: "xl",
+        weight: "bold",
+      },
+    },
+    "increment-btn": {
+      type: "Button",
+      props: { label: "+", variant: "primary" },
+      on: { press: { action: "increment" } },
+    },
+    "reset-btn": {
+      type: "Button",
+      props: { label: "Reset", variant: "danger" },
+      on: { press: { action: "reset" } },
+    },
+    "milestone-badge": {
+      type: "Badge",
+      props: { label: "Milestone reached: 10!", color: "#10b981" },
+      visible: { $state: "/count", gte: 10 },
+    },
+    "todos-card": {
+      type: "Card",
+      props: { title: "Todo List", subtitle: "Your tasks" },
+      children: ["todos-list"],
+    },
+    "todos-list": {
+      type: "Stack",
+      props: { gap: 8, direction: "vertical" },
+      repeat: { statePath: "/todos", key: "id" },
+      children: ["todo-item"],
+    },
+    "todo-item": {
+      type: "ListItem",
+      props: {
+        title: { $item: "title" },
+        completed: { $item: "completed" },
+      },
+      on: {
+        press: { action: "toggleItem", params: { index: { $index: true } } },
+      },
+    },
+    "input-card": {
+      type: "Card",
+      props: {
+        title: "Bound Input",
+        subtitle: "Type to update state and see reactive text",
+      },
+      children: ["input-body"],
+    },
+    "input-body": {
+      type: "Stack",
+      props: { gap: 12, direction: "vertical" },
+      children: ["name-input", "name-display"],
+    },
+    "name-input": {
+      type: "Input",
+      props: {
+        value: { $bindState: "/name" },
+        placeholder: "Enter your name...",
+      },
+    },
+    "name-display": {
+      type: "Text",
+      props: {
+        content: { $state: "/name" },
+        size: "md",
+        color: "#6b7280",
+      },
+    },
+  },
+};

examples/solid/tsconfig.json

@@ -0,0 +1,18 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "lib": ["ES2022", "DOM", "DOM.Iterable"],
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "isolatedModules": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "strict": true,
+    "skipLibCheck": true,
+    "jsx": "preserve",
+    "jsxImportSource": "solid-js"
+  },
+  "include": ["src/**/*.ts", "src/**/*.tsx"],
+  "exclude": ["node_modules"]
+}

examples/solid/vite.config.ts

@@ -0,0 +1,6 @@
+import { defineConfig } from "vite";
+import solid from "vite-plugin-solid";
+
+export default defineConfig({
+  plugins: [solid()],
+});

examples/stripe-app/drawer-app/CHANGELOG.md

@@ -1,5 +1,29 @@
 # com.example.json-render-demo
 
+## 0.0.10
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/react@0.14.1
+
+## 0.0.9
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/react@0.14.0
+
+## 0.0.8
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/react@0.13.0
+
 ## 0.0.7
 
 ### Patch Changes

examples/stripe-app/drawer-app/package.json

@@ -1,6 +1,6 @@
 {
   "name": "com.example.json-render-demo",
-  "version": "0.0.7",
+  "version": "0.0.10",
   "description": "Test",
   "private": true,
   "license": "~~proprietary~~",

examples/stripe-app/fullpage-app/CHANGELOG.md

@@ -1,5 +1,29 @@
 # com.example.json-render-fullpage-demo
 
+## 0.0.10
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/react@0.14.1
+
+## 0.0.9
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/react@0.14.0
+
+## 0.0.8
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/react@0.13.0
+
 ## 0.0.7
 
 ### Patch Changes

examples/stripe-app/fullpage-app/package.json

@@ -1,6 +1,6 @@
 {
   "name": "com.example.json-render-fullpage-demo",
-  "version": "0.0.7",
+  "version": "0.0.10",
   "description": "Full-page Stripe App example (alpha)",
   "private": true,
   "license": "~~proprietary~~",

examples/svelte-chat/CHANGELOG.md

@@ -1,5 +1,29 @@
 # svelte-chat
 
+## 0.0.6
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/svelte@0.14.1
+
+## 0.0.5
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/svelte@0.14.0
+
+## 0.0.4
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/svelte@0.13.0
+
 ## 0.0.3
 
 ### Patch Changes

examples/svelte-chat/package.json

@@ -1,7 +1,7 @@
 {
   "name": "svelte-chat",
   "private": true,
-  "version": "0.0.3",
+  "version": "0.0.6",
   "type": "module",
   "scripts": {
     "dev": "vite dev",

examples/svelte/CHANGELOG.md

@@ -1,5 +1,29 @@
 # example-svelte
 
+## 0.1.6
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/svelte@0.14.1
+
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/svelte@0.14.0
+
+## 0.1.4
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/svelte@0.13.0
+
 ## 0.1.3
 
 ### Patch Changes

examples/svelte/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-svelte",
-  "version": "0.1.3",
+  "version": "0.1.6",
   "private": true,
   "type": "module",
   "scripts": {

examples/vite-renderers/CHANGELOG.md

@@ -1,5 +1,38 @@
 # vite-renderers
 
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/react@0.14.1
+  - @json-render/solid@0.14.1
+  - @json-render/svelte@0.14.1
+  - @json-render/vue@0.14.1
+
+## 0.1.6
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/react@0.14.0
+  - @json-render/solid@0.14.0
+  - @json-render/svelte@0.14.0
+  - @json-render/vue@0.14.0
+
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/solid@0.13.0
+  - @json-render/react@0.13.0
+  - @json-render/svelte@0.13.0
+  - @json-render/vue@0.13.0
+
 ## 0.1.4
 
 ### Patch Changes

examples/vite-renderers/package.json

@@ -1,6 +1,6 @@
 {
   "name": "vite-renderers",
-  "version": "0.1.4",
+  "version": "0.1.7",
   "private": true,
   "type": "module",
   "scripts": {

examples/vue/CHANGELOG.md

@@ -1,5 +1,29 @@
 # example-vue
 
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+  - @json-render/vue@0.14.1
+
+## 0.1.6
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+  - @json-render/vue@0.14.0
+
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+  - @json-render/vue@0.13.0
+
 ## 0.1.4
 
 ### Patch Changes

examples/vue/package.json

@@ -1,6 +1,6 @@
 {
   "name": "example-vue",
-  "version": "0.1.4",
+  "version": "0.1.7",
   "private": true,
   "scripts": {
     "predev": "command -v portless >/dev/null 2>&1 || (echo '\\nportless is required but not installed. Run: npm i -g portless\\nSee: https://github.com/vercel-labs/portless\\n' && exit 1)",

packages/codegen/CHANGELOG.md

@@ -1,5 +1,26 @@
 # @json-render/codegen
 
+## 0.14.1
+
+### Patch Changes
+
+- Updated dependencies [43b7515]
+  - @json-render/core@0.14.1
+
+## 0.14.0
+
+### Patch Changes
+
+- Updated dependencies [a8afd8b]
+  - @json-render/core@0.14.0
+
+## 0.13.0
+
+### Patch Changes
+
+- Updated dependencies [5b32de8]
+  - @json-render/core@0.13.0
+
 ## 0.12.1
 
 ### Patch Changes

packages/codegen/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/codegen",
-  "version": "0.12.1",
+  "version": "0.14.1",
   "license": "Apache-2.0",
   "description": "Utilities for generating code from json-render UI trees",
   "keywords": [

packages/core/CHANGELOG.md

@@ -1,5 +1,42 @@
 # @json-render/core
 
+## 0.14.1
+
+### Patch Changes
+
+- 43b7515: Add yaml format support to `buildUserPrompt`
+
+  ### New:
+  - `buildUserPrompt` now accepts `format` and `serializer` options, enabling YAML as a wire format alongside JSON
+
+## 0.14.0
+
+### Minor Changes
+
+- a8afd8b: Add YAML wire format package and universal edit modes for surgical spec refinement.
+
+  ### New:
+  - **`@json-render/yaml`** -- YAML wire format for json-render. Includes streaming YAML parser, `yamlPrompt()` for system prompts, and AI SDK transform (`pipeYamlRender`) as a drop-in alternative to JSONL streaming. Supports four fence types: `yaml-spec`, `yaml-edit`, `yaml-patch`, and `diff`.
+  - **Universal edit modes** in `@json-render/core` -- three strategies for multi-turn spec refinement: `patch` (RFC 6902), `merge` (RFC 7396), and `diff` (unified diff). New `editModes` option on `buildUserPrompt()` and `PromptOptions`. New helpers: `deepMergeSpec()`, `diffToPatches()`, `buildEditUserPrompt()`, `buildEditInstructions()`, `isNonEmptySpec()`.
+
+  ### Improved:
+  - **Playground** -- format toggle (JSONL / YAML), edit mode picker (patch / merge / diff), and token usage display with prompt caching stats.
+  - **Prompt caching** -- generate API uses Anthropic ephemeral cache control for system prompts.
+  - **CI** -- lint, type-check, and test jobs now run in parallel.
+
+## 0.13.0
+
+### Minor Changes
+
+- 5b32de8: Add SolidJS and React Three Fiber renderers, plus strict JSON Schema mode for LLM structured outputs.
+
+  ### New:
+  - **`@json-render/solid`** -- SolidJS renderer. JSON becomes Solid components with reactive rendering, schema export, and full catalog support.
+  - **`@json-render/react-three-fiber`** -- React Three Fiber renderer. JSON becomes 3D scenes with 19 built-in components for meshes, lights, models, environments, text, cameras, and controls.
+
+  ### Improved:
+  - **`@json-render/core`** -- `jsonSchema({ strict: true })` produces a JSON Schema subset compatible with LLM structured output APIs (OpenAI, Google Gemini, Anthropic). Ensures `additionalProperties: false` on every object and all properties listed in `required`.
+
 ## 0.12.1
 
 ### Patch Changes

packages/core/README.md

@@ -210,7 +210,20 @@ Schema options:
 | Export | Purpose |
 |--------|---------|
 | `buildUserPrompt(options)` | Build a user prompt with optional spec refinement and state context |
+| `buildEditUserPrompt(options)` | Build a user prompt for editing an existing spec (used internally by `buildUserPrompt`) |
+| `buildEditInstructions(config, format)` | Generate the prompt section describing available edit modes |
+| `isNonEmptySpec(spec)` | Check whether a spec has a root and at least one element |
 | `UserPromptOptions` | Options type for `buildUserPrompt` |
+| `EditMode` | `"patch" \| "merge" \| "diff"` |
+| `EditConfig` | Configuration for edit modes (`{ modes: EditMode[] }`) |
+| `BuildEditUserPromptOptions` | Options type for `buildEditUserPrompt` |
+
+### Merge and Diff
+
+| Export | Purpose |
+|--------|---------|
+| `deepMergeSpec(base, patch)` | RFC 7396 deep merge (null deletes, arrays replace, objects recurse) |
+| `diffToPatches(oldObj, newObj)` | Generate RFC 6902 JSON Patch operations from object diff |
 
 ### Spec Validation
 
@@ -491,10 +504,11 @@ import { buildUserPrompt } from "@json-render/core";
 // Fresh generation
 const prompt = buildUserPrompt({ prompt: "create a todo app" });
 
-// Refinement with existing spec (triggers patch-only mode)
+// Refinement with edit modes (default: patch-only)
 const refinementPrompt = buildUserPrompt({
   prompt: "add a dark mode toggle",
   currentSpec: existingSpec,
+  editModes: ["patch", "merge"],
 });
 
 // With runtime state context
@@ -504,6 +518,27 @@ const contextPrompt = buildUserPrompt({
 });
 ```
 
+When `currentSpec` is provided, the prompt instructs the AI to use the specified edit modes. Available modes:
+
+- **`"patch"`** — RFC 6902 JSON Patch. One operation per line. Best for precise, targeted single-field updates.
+- **`"merge"`** — RFC 7396 JSON Merge Patch. Partial object deep-merged; `null` deletes. Best for structural changes.
+- **`"diff"`** — Unified diff against the serialized spec. Best for small text-level changes.
+
+## Deep Merge and Diff
+
+Format-agnostic utilities for working with specs:
+
+```typescript
+import { deepMergeSpec, diffToPatches } from "@json-render/core";
+
+// RFC 7396 deep merge: null deletes, arrays replace, objects recurse
+const merged = deepMergeSpec(baseSpec, { elements: { main: { props: { title: "New" } } } });
+
+// RFC 6902 diff: generate JSON Patch operations from two objects
+const patches = diffToPatches(oldSpec, newSpec);
+// [{ op: "replace", path: "/elements/main/props/title", value: "New" }]
+```
+
 ## Spec Validation
 
 Validate spec structure and auto-fix common issues:

packages/core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@json-render/core",
-  "version": "0.12.1",
+  "version": "0.14.1",
   "license": "Apache-2.0",
   "description": "JSON becomes real things. Define your catalog, register your components, let AI generate.",
   "keywords": [

packages/core/src/diff.ts

@@ -0,0 +1,78 @@
+import type { JsonPatch } from "./types";
+
+/**
+ * Escape a single JSON Pointer token per RFC 6901.
+ * `~` → `~0`, `/` → `~1`.
+ */
+function escapeToken(token: string): string {
+  return token.replace(/~/g, "~0").replace(/\//g, "~1");
+}
+
+function buildPath(basePath: string, key: string): string {
+  return `${basePath}/${escapeToken(key)}`;
+}
+
+function isPlainObject(value: unknown): value is Record<string, unknown> {
+  return value !== null && typeof value === "object" && !Array.isArray(value);
+}
+
+/**
+ * Shallow equality for arrays — used to avoid emitting patches when the
+ * children list hasn't actually changed.
+ */
+function arraysEqual(a: unknown[], b: unknown[]): boolean {
+  if (a.length !== b.length) return false;
+  for (let i = 0; i < a.length; i++) {
+    if (a[i] !== b[i]) return false;
+  }
+  return true;
+}
+
+/**
+ * Produce RFC 6902 JSON Patch operations that transform `oldObj` into `newObj`.
+ *
+ * - New keys → `add`
+ * - Changed scalar/array values → `replace`
+ * - Removed keys → `remove`
+ * - Arrays are compared shallowly and replaced atomically (not element-diffed)
+ * - Plain objects recurse
+ */
+export function diffToPatches(
+  oldObj: Record<string, unknown>,
+  newObj: Record<string, unknown>,
+  basePath = "",
+): JsonPatch[] {
+  const patches: JsonPatch[] = [];
+
+  // Keys present in newObj
+  for (const key of Object.keys(newObj)) {
+    const path = buildPath(basePath, key);
+    const oldVal = oldObj[key];
+    const newVal = newObj[key];
+
+    if (!(key in oldObj)) {
+      patches.push({ op: "add", path, value: newVal });
+      continue;
+    }
+
+    // Both exist — compare
+    if (isPlainObject(oldVal) && isPlainObject(newVal)) {
+      patches.push(...diffToPatches(oldVal, newVal, path));
+    } else if (Array.isArray(oldVal) && Array.isArray(newVal)) {
+      if (!arraysEqual(oldVal, newVal)) {
+        patches.push({ op: "replace", path, value: newVal });
+      }
+    } else if (oldVal !== newVal) {
+      patches.push({ op: "replace", path, value: newVal });
+    }
+  }
+
+  // Keys removed from oldObj
+  for (const key of Object.keys(oldObj)) {
+    if (!(key in newObj)) {
+      patches.push({ op: "remove", path: buildPath(basePath, key) });
+    }
+  }
+
+  return patches;
+}

packages/core/src/edit-modes.ts

@@ -0,0 +1,316 @@
+import type { Spec } from "./types";
+
+/**
+ * Edit mode for modifying an existing spec.
+ *
+ * - `"patch"` — RFC 6902 JSON Patch. One operation per line.
+ * - `"merge"` — RFC 7396 JSON Merge Patch. Partial object deep-merged; `null` deletes.
+ * - `"diff"`  — Unified diff (POSIX). Line-level text edits against the serialized spec.
+ */
+export type EditMode = "patch" | "merge" | "diff";
+
+export interface EditConfig {
+  /** Which edit modes are enabled. When >1, the AI chooses per edit. */
+  modes: EditMode[];
+}
+
+const DEFAULT_MODES: EditMode[] = ["patch"];
+
+function normalizeModes(config?: EditConfig): EditMode[] {
+  if (!config?.modes?.length) return DEFAULT_MODES;
+  return config.modes;
+}
+
+// ── JSON-format instructions ──
+
+function jsonPatchInstructions(): string {
+  return [
+    "PATCH MODE (RFC 6902 JSON Patch):",
+    "Output one JSON object per line. Each line is a patch operation.",
+    '- Add: {"op":"add","path":"/elements/new-key","value":{...}}',
+    '- Replace: {"op":"replace","path":"/elements/existing-key","value":{...}}',
+    '- Remove: {"op":"remove","path":"/elements/old-key"}',
+    "Only output patches for what needs to change.",
+  ].join("\n");
+}
+
+function jsonMergeInstructions(): string {
+  return [
+    "MERGE MODE (RFC 7396 JSON Merge Patch):",
+    "Output a single JSON object on one line with __json_edit set to true.",
+    "Include only the keys that changed. Unmentioned keys are preserved.",
+    "Set a key to null to delete it.",
+    "",
+    "Example (update a title and add an element):",
+    '{"__json_edit":true,"elements":{"main":{"props":{"title":"New Title"}},"new-el":{"type":"Card","props":{},"children":[]}}}',
+    "",
+    "Example (delete an element):",
+    '{"__json_edit":true,"elements":{"old-widget":null}}',
+  ].join("\n");
+}
+
+function jsonDiffInstructions(): string {
+  return [
+    "DIFF MODE (unified diff):",
+    "Output a unified diff inside a ```diff code fence.",
+    "The diff applies against the JSON-serialized current spec.",
+    "",
+    "Example:",
+    "```diff",
+    "--- a/spec.json",
+    "+++ b/spec.json",
+    "@@ -3,1 +3,1 @@",
+    '-      "title": "Login"',
+    '+      "title": "Welcome Back"',
+    "```",
+  ].join("\n");
+}
+
+// ── YAML-format instructions ──
+
+function yamlPatchInstructions(): string {
+  return [
+    "PATCH MODE (RFC 6902 JSON Patch):",
+    "Output RFC 6902 JSON Patch lines inside a ```yaml-patch code fence.",
+    "Each line is one JSON patch operation.",
+    "",
+    "Example:",
+    "```yaml-patch",
+    '{"op":"replace","path":"/elements/main/props/title","value":"New Title"}',
+    '{"op":"add","path":"/elements/new-el","value":{"type":"Card","props":{},"children":[]}}',
+    "```",
+  ].join("\n");
+}
+
+function yamlMergeInstructions(): string {
+  return [
+    "MERGE MODE (RFC 7396 JSON Merge Patch):",
+    "Output only the changed parts in a ```yaml-edit code fence.",
+    "Uses deep merge semantics: only keys you include are updated. Unmentioned elements and props are preserved.",
+    "Set a key to null to delete it.",
+    "",
+    "Example edit (update title, add a new element):",
+    "```yaml-edit",
+    "elements:",
+    "  main:",
+    "    props:",
+    "      title: Updated Title",
+    "  new-chart:",
+    "    type: Card",
+    "    props: {}",
+    "    children: []",
+    "```",
+    "",
+    "Example deletion:",
+    "```yaml-edit",
+    "elements:",
+    "  old-widget: null",
+    "```",
+  ].join("\n");
+}
+
+function yamlDiffInstructions(): string {
+  return [
+    "DIFF MODE (unified diff):",
+    "Output a unified diff inside a ```diff code fence.",
+    "The diff applies against the YAML-serialized current spec.",
+    "",
+    "Example:",
+    "```diff",
+    "--- a/spec.yaml",
+    "+++ b/spec.yaml",
+    "@@ -6,1 +6,1 @@",
+    "-      title: Login",
+    "+      title: Welcome Back",
+    "```",
+  ].join("\n");
+}
+
+// ── Mode selection guidance ──
+
+function modeSelectionGuidance(modes: EditMode[]): string {
+  if (modes.length === 1) return "";
+  const parts = ["Choose the best edit strategy for the requested change:"];
+  if (modes.includes("patch")) {
+    parts.push("- PATCH: best for precise, targeted single-field updates");
+  }
+  if (modes.includes("merge")) {
+    parts.push(
+      "- MERGE: best for structural changes (add/remove elements, reparent children, update multiple props at once)",
+    );
+  }
+  if (modes.includes("diff")) {
+    parts.push(
+      "- DIFF: best for small text-level changes when you can see the exact lines to change",
+    );
+  }
+  return parts.join("\n");
+}
+
+/**
+ * Generate the prompt section describing available edit modes.
+ * Only documents the modes that are enabled.
+ */
+export function buildEditInstructions(
+  config: EditConfig | undefined,
+  format: "json" | "yaml",
+): string {
+  const modes = normalizeModes(config);
+  const sections: string[] = [];
+
+  sections.push("EDITING EXISTING SPECS:");
+  sections.push("");
+
+  const guidance = modeSelectionGuidance(modes);
+  if (guidance) {
+    sections.push(guidance);
+    sections.push("");
+  }
+
+  for (const mode of modes) {
+    if (format === "json") {
+      switch (mode) {
+        case "patch":
+          sections.push(jsonPatchInstructions());
+          break;
+        case "merge":
+          sections.push(jsonMergeInstructions());
+          break;
+        case "diff":
+          sections.push(jsonDiffInstructions());
+          break;
+      }
+    } else {
+      switch (mode) {
+        case "patch":
+          sections.push(yamlPatchInstructions());
+          break;
+        case "merge":
+          sections.push(yamlMergeInstructions());
+          break;
+        case "diff":
+          sections.push(yamlDiffInstructions());
+          break;
+      }
+    }
+    sections.push("");
+  }
+
+  return sections.join("\n");
+}
+
+function addLineNumbers(text: string): string {
+  const lines = text.split("\n");
+  const width = String(lines.length).length;
+  return lines
+    .map((line, i) => `${String(i + 1).padStart(width)}| ${line}`)
+    .join("\n");
+}
+
+export function isNonEmptySpec(spec: unknown): spec is Spec {
+  if (!spec || typeof spec !== "object") return false;
+  const s = spec as Record<string, unknown>;
+  return (
+    typeof s.root === "string" &&
+    typeof s.elements === "object" &&
+    s.elements !== null &&
+    Object.keys(s.elements as object).length > 0
+  );
+}
+
+export interface BuildEditUserPromptOptions {
+  prompt: string;
+  currentSpec?: Spec | null;
+  config?: EditConfig;
+  format: "json" | "yaml";
+  maxPromptLength?: number;
+  /** Serialise the spec. Defaults to JSON.stringify for json, must be provided for yaml. */
+  serializer?: (spec: Spec) => string;
+}
+
+/**
+ * Generate the user prompt for edits, including the current spec
+ * (with line numbers when diff mode is enabled) and mode instructions.
+ */
+export function buildEditUserPrompt(
+  options: BuildEditUserPromptOptions,
+): string {
+  const { prompt, currentSpec, config, format, maxPromptLength, serializer } =
+    options;
+
+  let userText = String(prompt || "");
+  if (maxPromptLength !== undefined && maxPromptLength > 0) {
+    userText = userText.slice(0, maxPromptLength);
+  }
+
+  if (!isNonEmptySpec(currentSpec)) {
+    return userText;
+  }
+
+  const modes = normalizeModes(config);
+  const showLineNumbers = modes.includes("diff");
+
+  const serialize = serializer ?? ((s: Spec) => JSON.stringify(s, null, 2));
+  const specText = serialize(currentSpec);
+
+  const parts: string[] = [];
+
+  if (showLineNumbers) {
+    parts.push("CURRENT UI STATE (line numbers for reference):");
+    parts.push("```");
+    parts.push(addLineNumbers(specText));
+    parts.push("```");
+  } else {
+    parts.push(
+      "CURRENT UI STATE (already loaded, DO NOT recreate existing elements):",
+    );
+    parts.push("```");
+    parts.push(specText);
+    parts.push("```");
+  }
+
+  parts.push("");
+  parts.push(`USER REQUEST: ${userText}`);
+  parts.push("");
+
+  if (modes.length === 1) {
+    const mode = modes[0]!;
+    switch (mode) {
+      case "patch":
+        parts.push(
+          format === "yaml"
+            ? "Output ONLY the patches in a ```yaml-patch fence."
+            : "Output ONLY the JSON Patch lines needed for the change.",
+        );
+        break;
+      case "merge":
+        parts.push(
+          format === "yaml"
+            ? "Output ONLY the changes in a ```yaml-edit fence. Include only keys that need to change."
+            : "Output ONLY a single JSON merge line with __json_edit set to true. Include only keys that need to change.",
+        );
+        break;
+      case "diff":
+        parts.push("Output ONLY the unified diff in a ```diff fence.");
+        break;
+    }
+  } else {
+    const modeNames = modes.map((m) => {
+      switch (m) {
+        case "patch":
+          return format === "yaml" ? "```yaml-patch fence" : "JSON Patch lines";
+        case "merge":
+          return format === "yaml"
+            ? "```yaml-edit fence"
+            : "JSON merge line (__json_edit)";
+        case "diff":
+          return "```diff fence";
+      }
+    });
+    parts.push(
+      `Choose the best edit strategy and output using one of: ${modeNames.join(", ")}`,
+    );
+  }
+
+  return parts.join("\n");
+}

packages/core/src/index.ts

@@ -160,6 +160,7 @@ export { defineSchema } from "./schema";
 // Catalog — defines the vocabulary (what components and actions are available)
 export type {
   Catalog,
+  JsonSchemaOptions,
   PromptOptions,
   PromptContext,
   SpecValidationResult,
@@ -177,3 +178,19 @@ export { defineCatalog } from "./schema";
 export type { UserPromptOptions } from "./prompt";
 
 export { buildUserPrompt } from "./prompt";
+
+// Object diff & merge (format-agnostic)
+export { deepMergeSpec } from "./merge";
+export { diffToPatches } from "./diff";
+
+// Edit modes
+export type {
+  EditMode,
+  EditConfig,
+  BuildEditUserPromptOptions,
+} from "./edit-modes";
+export {
+  buildEditInstructions,
+  buildEditUserPrompt,
+  isNonEmptySpec,
+} from "./edit-modes";

packages/core/src/merge.ts

@@ -0,0 +1,41 @@
+function isPlainObject(value: unknown): value is Record<string, unknown> {
+  return value !== null && typeof value === "object" && !Array.isArray(value);
+}
+
+/**
+ * Deep-merge `patch` into `base`, returning a new object.
+ *
+ * Semantics (RFC 7396 JSON Merge Patch):
+ * - `null` values in `patch` delete the corresponding key from `base`
+ * - Arrays in `patch` replace (not concat) the corresponding array in `base`
+ * - Plain objects recurse
+ * - All other values replace
+ *
+ * Neither `base` nor `patch` is mutated.
+ */
+export function deepMergeSpec(
+  base: Record<string, unknown>,
+  patch: Record<string, unknown>,
+): Record<string, unknown> {
+  const result: Record<string, unknown> = { ...base };
+
+  for (const key of Object.keys(patch)) {
+    const patchVal = patch[key];
+
+    // null → delete
+    if (patchVal === null) {
+      delete result[key];
+      continue;
+    }
+
+    const baseVal = result[key];
+
+    if (isPlainObject(patchVal) && isPlainObject(baseVal)) {
+      result[key] = deepMergeSpec(baseVal, patchVal);
+    } else {
+      result[key] = patchVal;
+    }
+  }
+
+  return result;
+}

packages/core/src/prompt.ts

@@ -1,4 +1,6 @@
 import type { Spec } from "./types";
+import type { EditMode } from "./edit-modes";
+import { buildEditUserPrompt, isNonEmptySpec } from "./edit-modes";
 
 /**
  * Options for building a user prompt.
@@ -12,37 +14,20 @@ export interface UserPromptOptions {
   state?: Record<string, unknown> | null;
   /** Maximum length for the user's text prompt (applied before wrapping) */
   maxPromptLength?: number;
+  /** Edit modes to offer when refining an existing spec. Default: `["patch"]`. */
+  editModes?: EditMode[];
+  /** Wire format. Default: `"json"`. */
+  format?: "json" | "yaml";
+  /** Serialise the spec for edits. Defaults to JSON.stringify for json, must be provided for yaml. */
+  serializer?: (spec: Spec) => string;
 }
 
-/**
- * Check whether a spec is non-empty (has a root and at least one element).
- */
-function isNonEmptySpec(spec: unknown): spec is Spec {
-  if (!spec || typeof spec !== "object") return false;
-  const s = spec as Record<string, unknown>;
-  return (
-    typeof s.root === "string" &&
-    typeof s.elements === "object" &&
-    s.elements !== null &&
-    Object.keys(s.elements as object).length > 0
-  );
-}
-
-const PATCH_INSTRUCTIONS = `IMPORTANT: The current UI is already loaded. Output ONLY the patches needed to make the requested change:
-- To add a new element: {"op":"add","path":"/elements/new-key","value":{...}}
-- To modify an existing element: {"op":"replace","path":"/elements/existing-key","value":{...}}
-- To remove an element: {"op":"remove","path":"/elements/old-key"}
-- To update the root: {"op":"replace","path":"/root","value":"new-root-key"}
-- To add children: update the parent element with new children array
-
-DO NOT output patches for elements that don't need to change. Only output what's necessary for the requested modification.`;
-
 /**
  * Build a user prompt for AI generation.
  *
  * Handles common patterns that every consuming app needs:
  * - Truncating the user's prompt to a max length
- * - Including the current spec for refinement (patch-only mode)
+ * - Including the current spec for refinement (edit mode)
  * - Including runtime state context
  *
  * @example
@@ -53,12 +38,20 @@ DO NOT output patches for elements that don't need to change. Only output what's
  * // Refinement with existing spec
  * buildUserPrompt({ prompt: "add a dark mode toggle", currentSpec: spec })
  *
- * // With state context
- * buildUserPrompt({ prompt: "show my data", state: { todos: [] } })
+ * // With multiple edit modes
+ * buildUserPrompt({ prompt: "change title", currentSpec: spec, editModes: ["patch", "merge"] })
  * ```
  */
 export function buildUserPrompt(options: UserPromptOptions): string {
-  const { prompt, currentSpec, state, maxPromptLength } = options;
+  const {
+    prompt,
+    currentSpec,
+    state,
+    maxPromptLength,
+    editModes,
+    format,
+    serializer,
+  } = options;
 
   // Sanitize and optionally truncate the user's text
   let userText = String(prompt || "");
@@ -68,25 +61,20 @@ export function buildUserPrompt(options: UserPromptOptions): string {
 
   // --- Refinement mode: currentSpec is provided ---
   if (isNonEmptySpec(currentSpec)) {
-    const parts: string[] = [];
-
-    parts.push(
-      `CURRENT UI STATE (already loaded, DO NOT recreate existing elements):`,
-    );
-    parts.push(JSON.stringify(currentSpec, null, 2));
-    parts.push("");
-    parts.push(`USER REQUEST: ${userText}`);
+    const editPrompt = buildEditUserPrompt({
+      prompt: userText,
+      currentSpec,
+      config: { modes: editModes ?? ["patch"] },
+      format: format ?? "json",
+      serializer,
+    });
 
     // Append state context if provided
     if (state && Object.keys(state).length > 0) {
-      parts.push("");
-      parts.push(`AVAILABLE STATE:\n${JSON.stringify(state, null, 2)}`);
+      return `${editPrompt}\n\nAVAILABLE STATE:\n${JSON.stringify(state, null, 2)}`;
     }
 
-    parts.push("");
-    parts.push(PATCH_INSTRUCTIONS);
-
-    return parts.join("\n");
+    return editPrompt;
   }
 
   // --- Fresh generation mode ---
@@ -96,9 +84,15 @@ export function buildUserPrompt(options: UserPromptOptions): string {
     parts.push(`\nAVAILABLE STATE:\n${JSON.stringify(state, null, 2)}`);
   }
 
-  parts.push(
-    `\nRemember: Output /root first, then interleave /elements and /state patches so the UI fills in progressively as it streams. Output each state patch right after the elements that use it, one per array item.`,
-  );
+  if (format === "yaml") {
+    parts.push(
+      `\nOutput the full spec in a \`\`\`yaml-spec fence. Stream progressively — output elements one at a time.`,
+    );
+  } else {
+    parts.push(
+      `\nRemember: Output /root first, then interleave /elements and /state patches so the UI fills in progressively as it streams. Output each state patch right after the elements that use it, one per array item.`,
+    );
+  }
 
   return parts.join("\n");
 }

packages/core/src/schema.test.ts

@@ -592,6 +592,194 @@ describe("catalog.jsonSchema", () => {
     expect(jsonSchema).not.toBeNull();
     expect(typeof jsonSchema).toBe("object");
   });
+
+  describe("strict mode (LLM structured output compatible)", () => {
+    function hasNoPropertyNames(obj: unknown): boolean {
+      if (typeof obj !== "object" || obj === null) return true;
+      if ("propertyNames" in obj) return false;
+      return Object.values(obj).every(hasNoPropertyNames);
+    }
+
+    function allObjectsHaveAdditionalPropertiesFalse(obj: unknown): boolean {
+      if (typeof obj !== "object" || obj === null) return true;
+      const record = obj as Record<string, unknown>;
+      if (record.type === "object") {
+        if (record.additionalProperties !== false) return false;
+      }
+      return Object.values(record).every(
+        allObjectsHaveAdditionalPropertiesFalse,
+      );
+    }
+
+    function allObjectPropertiesRequired(obj: unknown): boolean {
+      if (typeof obj !== "object" || obj === null) return true;
+      const record = obj as Record<string, unknown>;
+      if (
+        record.type === "object" &&
+        record.properties &&
+        typeof record.properties === "object"
+      ) {
+        const propKeys = Object.keys(record.properties);
+        const required = (record.required as string[]) ?? [];
+        if (!propKeys.every((k) => required.includes(k))) return false;
+      }
+      return Object.values(record).every(allObjectPropertiesRequired);
+    }
+
+    it("sets additionalProperties: false on all nested objects", () => {
+      const catalog = defineCatalog(testSchema, {
+        components: {
+          Card: {
+            props: z.object({
+              title: z.string(),
+              subtitle: z.string().optional(),
+            }),
+            description: "",
+            slots: [],
+          },
+        },
+        actions: {},
+      });
+      const schema = catalog.jsonSchema({ strict: true });
+      expect(allObjectsHaveAdditionalPropertiesFalse(schema)).toBe(true);
+    });
+
+    it("does not emit propertyNames", () => {
+      const catalog = defineCatalog(testSchema, {
+        components: {
+          Text: {
+            props: z.object({ content: z.string() }),
+            description: "",
+            slots: [],
+          },
+        },
+        actions: {},
+      });
+      const schema = catalog.jsonSchema({ strict: true });
+      expect(hasNoPropertyNames(schema)).toBe(true);
+    });
+
+    it("lists all properties in required (optional uses nullable)", () => {
+      const catalog = defineCatalog(testSchema, {
+        components: {
+          Card: {
+            props: z.object({
+              title: z.string(),
+              subtitle: z.string().optional(),
+            }),
+            description: "",
+            slots: [],
+          },
+        },
+        actions: {},
+      });
+      const schema = catalog.jsonSchema({ strict: true });
+      expect(allObjectPropertiesRequired(schema)).toBe(true);
+    });
+
+    it("converts record types without additionalProperties schema value", () => {
+      const catalog = defineCatalog(testSchema, {
+        components: {
+          Text: {
+            props: z.object({ content: z.string() }),
+            description: "",
+            slots: [],
+          },
+        },
+        actions: {},
+      });
+      const schema = catalog.jsonSchema({
+        strict: true,
+      }) as Record<string, unknown>;
+
+      // Walk the schema and ensure no additionalProperties is set to a non-false value
+      function noAdditionalPropertiesSchema(obj: unknown): boolean {
+        if (typeof obj !== "object" || obj === null) return true;
+        const rec = obj as Record<string, unknown>;
+        if (
+          "additionalProperties" in rec &&
+          rec.additionalProperties !== false
+        ) {
+          return false;
+        }
+        return Object.values(rec).every(noAdditionalPropertiesSchema);
+      }
+      expect(noAdditionalPropertiesSchema(schema)).toBe(true);
+    });
+
+    it("wraps optional properties with anyOf nullable", () => {
+      // Use a schema where propsOf resolves to a single component's props
+      // (no record wrapper around the props) so the optional anyOf handling
+      // is directly visible in the JSON Schema output.
+      const flatSchema = defineSchema((s) => ({
+        spec: s.object({
+          component: s.object({
+            type: s.ref("catalog.components"),
+            props: s.propsOf("catalog.components"),
+          }),
+        }),
+        catalog: s.object({
+          components: s.map({
+            props: s.zod(),
+            description: s.string(),
+          }),
+        }),
+      }));
+
+      const catalog = defineCatalog(flatSchema, {
+        components: {
+          Card: {
+            props: z.object({
+              heading: z.string(),
+              caption: z.string().optional(),
+            }),
+            description: "",
+          },
+        },
+      });
+
+      const schema = catalog.jsonSchema({ strict: true }) as {
+        properties: {
+          component: {
+            properties: { props: Record<string, unknown> };
+          };
+        };
+      };
+
+      const propsSchema = schema.properties.component.properties.props;
+
+      // caption is optional – in strict mode it must be in `required`
+      // and wrapped in anyOf with null
+      const captionSchema = (
+        propsSchema as {
+          properties: { caption: Record<string, unknown> };
+        }
+      ).properties.caption;
+      expect(captionSchema).toEqual({
+        anyOf: [{ type: "string" }, { type: "null" }],
+      });
+
+      const propsRequired = (propsSchema as { required: string[] }).required;
+      expect(propsRequired).toContain("heading");
+      expect(propsRequired).toContain("caption");
+    });
+
+    it("does not affect default (non-strict) output", () => {
+      const catalog = defineCatalog(testSchema, {
+        components: {
+          Text: {
+            props: z.object({ content: z.string() }),
+            description: "",
+            slots: [],
+          },
+        },
+        actions: {},
+      });
+      const defaultSchema = catalog.jsonSchema();
+      const defaultSchema2 = catalog.jsonSchema({ strict: false });
+      expect(defaultSchema).toEqual(defaultSchema2);
+    });
+  });
 });
 
 // =============================================================================