### Install SpaceGraph ZUI Library

Source: https://github.com/automenta/spacegraphjs/blob/main/README.md

Instructions for installing the SpaceGraph ZUI library using npm or yarn package managers.

```bash
npm install spacegraph-zui
```

```bash
yarn add spacegraph-zui
```

--------------------------------

### Install SpaceGraph ZUI Peer Dependencies

Source: https://github.com/automenta/spacegraphjs/blob/main/README.md

Instructions for installing the required peer dependencies (three, gsap, and postprocessing) for SpaceGraph ZUI using npm or yarn.

```bash
npm install three gsap postprocessing
```

```bash
yarn add three gsap postprocessing
```

--------------------------------

### Initialize SpaceGraph.js and Create Nodes/Edges

Source: https://github.com/automenta/spacegraphjs/blob/main/README.md

This JavaScript code demonstrates how to initialize the SpaceGraph.js library within a web page. It selects a container element, configures basic options like layout, creates two 'ShapeNode' instances, adds an edge between them, and starts the rendering loop. Error handling for initialization is also included.

```javascript
import { SpaceGraph } from 'spacegraph-zui';
// For CommonJS: const { SpaceGraph } = require('spacegraph-zui');

document.addEventListener('DOMContentLoaded', async () => {
    const container = document.getElementById('graph-container');

    if (!container) {
        console.error('Graph container not found!');
        return;
    }

    // Basic options (see documentation for more)
    const options = {
        // Example: configure default layout
        layout: {
            type: 'ForceLayout', // Default, can be omitted
            settings: {
                // Force layout specific settings
            },
        },
        // Example: UI plugin options (if using default UI elements)
        // ui: {
        //   contextMenuElement: document.getElementById('my-custom-context-menu'),
        //   confirmDialogElement: document.getElementById('my-custom-confirm-dialog')
        // }
    };

    const sg = new SpaceGraph(container, options);

    try {
        await sg.init(); // Initialize plugins and renderer

        // Add some nodes
        const node1 = sg.createNode({
            id: 'node-1',
            type: 'ShapeNode', // Default node type, can be 'HtmlNode', 'ImageNode' etc.
            data: { label: 'Hello' },
            position: { x: -50, y: 0, z: 0 }, // Optional initial position
        });

        const node2 = sg.createNode({
            id: 'node-2',
            type: 'ShapeNode',
            data: { label: 'World' },
            position: { x: 50, y: 0, z: 0 },
        });

        // Add an edge between them
        if (node1 && node2) {
            sg.addEdge(node1, node2, { label: 'connects to' });
        }

        // If your layout requires manual starting or if you want to ensure rendering loop
        sg.animate(); // Starts the rendering loop if not auto-started by plugins

        // Center view on content or specific node
        sg.centerView();
    } catch (error) {
        console.error('Failed to initialize SpaceGraph:', error);
    }

    // Make it accessible for debugging
    window.mySpaceGraph = sg;
});
```

--------------------------------

### Start Initialization on DOM Ready

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

Ensures the `initializeDemo` function is called once the DOM is fully loaded. This prevents script execution before necessary HTML elements are available, which is crucial for functions that interact with the document structure.

```JavaScript
if (documen
```

--------------------------------

### HTML Setup for SpaceGraph.js Container

Source: https://github.com/automenta/spacegraphjs/blob/main/README.md

This HTML snippet provides the basic structure for a web page, including a 'div' element with the ID 'graph-container' which serves as the rendering target for the SpaceGraph.js library. It also includes minimal CSS to ensure the container fills the viewport and imports the main application JavaScript file.

```html
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <title>My SpaceGraph App</title>
        <style>
            body {
                margin: 0;
                overflow: hidden;
            }
            #graph-container {
                width: 100vw;
                height: 100vh;
                position: relative;
            }
        </style>
    </head>
    <body>
        <div id="graph-container"></div>
        <script type="module" src="my-app.js"></script>
    </body>
</html>
```

--------------------------------

### Initialize Demo on DOMContentLoaded

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

This snippet checks if the DOM is already loaded (e.g., `readyState` is not 'loading') or waits for the 'DOMContentLoaded' event before executing the `initializeDemo` function. This pattern ensures that the demo's setup logic runs only after the HTML structure is fully parsed and available.

```javascript
t.readyState === 'loading') { document.addEventListener('DOMContentLoaded', initializeDemo); } else { initializeDemo(); }
```

--------------------------------

### Initialize SpaceGraphJS Demo System

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

Asynchronously initializes the SpaceGraphJS demo. It first performs browser feature and performance detection, updates loading messages based on performance, then dynamically imports the main demo module. The function includes robust error handling, displaying user-friendly messages if initialization fails due to compatibility or network issues.

```JavaScript
async function initializeDemo() {
  try {
    const detection = detectFeatures();
    console.log('Feature detection:', detection);
    if (!showFeatureWarnings(detection)) {
      return;
    }
    const performance = detectPerformance();
    console.log('Performance tier:', performance);
    document.querySelector('.loading-subtitle').textContent = `Loading enhanced demo system... (${performance.message})`;
    const module = await import('./src/examples/enhanced-demo-main.js');
    setTimeout(() => {
      document.getElementById('loading-screen').style.display = 'none';
    }, 1000);
  } catch (error) {
    console.error('Failed to initialize demo system:', error);
    document.getElementById('loading-screen').innerHTML = ` <div class="error-container"> <div class="error-title"> ❌ Initialization Failed </div> <div class="error-description"> There was an error loading the SpaceGraphJS demo system: <br><br> <strong>Error:</strong> ${error.message} <br><br> This might be due to network issues or browser compatibility problems. </div> <div class="error-actions"> <button class="error-btn primary" onclick="location.reload()"> 🔄 Reload Page </button> <button class="error-btn secondary" onclick="window.open('./index.html', '_blank')"> 📄 Basic Demo </button> </div> </div> `;
  }
}
```

--------------------------------

### API for UI Framework and Theming in Spacegraph.js

Source: https://github.com/automenta/spacegraphjs/blob/main/TODO.md

This API describes the core UI elements like toolbars and context menus, and an advanced theming system based on CSS Custom Properties for deep customization.

```APIDOC
UI Framework and Theming API:
  Core UI Elements:
    - Toolbar for common actions.
    - Context Menus for node, edge, and canvas interactions.
  Advanced Theming System:
    - Implemented based on CSS Custom Properties for deep, non-intrusive customization (e.g., --spacegraph-node-bg, --spacegraph-accent-color).
```

--------------------------------

### API for Layout System Management in Spacegraph.js

Source: https://github.com/automenta/spacegraphjs/blob/main/TODO.md

This API outlines the system for managing and transitioning between various graph layout algorithms, including a robust force-directed layout with collision detection and smooth animations.

```APIDOC
Layout System API:
  Layout Manager:
    - System to register and switch between different layout algorithms.
  Force-Directed Layout:
    - Robust implementation with collision detection and clustering.
  Layout Transitions:
    - Uses GSAP for smooth, animated transitions when layouts change or graph is modified.
```

--------------------------------

### CSS Base Styles and Loading Screen for SpaceGraphJS Demo

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

This CSS defines global body styles and a full-screen loading overlay. It includes animations for a pulsating logo and a progress bar, providing visual feedback during initial page load.

```CSS
body { margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: #f8f9fa; }
#loading-screen { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; display: flex; flex-direction: column; align-items: center; justify-content: center; z-index: 9999; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
.loading-logo { font-size: 64px; margin-bottom: 20px; animation: pulse 2s infinite; }
.loading-title { font-size: 24px; font-weight: 300; margin-bottom: 10px; }
.loading-subtitle { font-size: 14px; opacity: 0.8; margin-bottom: 30px; }
.loading-progress { width: 300px; height: 4px; background: rgba(255, 255, 255, 0.2); border-radius: 2px; overflow: hidden; }
.loading-bar { height: 100%; background: rgba(255, 255, 255, 0.8); border-radius: 2px; animation: loading 3s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.1); } }
@keyframes loading { 0% { width: 0%; } 50% { width: 70%; } 100% { width: 100%; } }
```

--------------------------------

### SpaceGraph.js API Documentation Reference

Source: https://github.com/automenta/spacegraphjs/blob/main/README.md

This entry indicates the availability of detailed API documentation for SpaceGraph.js, covering classes, methods, options, and plugin development. Users are directed to an external site for comprehensive API specifications.

```APIDOC
For detailed API documentation, including all classes, methods, options, and plugin development, please visit [our documentation site](PLACEHOLDER_API_DOCS_LINK).
```

--------------------------------

### API for Expanded Content and Layouts (Plugins) in Spacegraph.js

Source: https://github.com/automenta/spacegraphjs/blob/main/TODO.md

This API describes the plugin system for advanced node types (e.g., Image, Video, Group, Data, IFrame) and additional layout algorithms (e.g., Grid, Circular, Hierarchical), with progress noted on specific enhancements.

```APIDOC
Expanded Content and Layouts (Plugins) API:
  Advanced Node Types:
    - ImageNode
    - VideoNode
    - GroupNode (collapsible container)
    - DataNode (for charts)
    - IFrameNode (for embedding web content)
    - Progress: AudioNode, DocumentNode, and ChartNode enhanced beyond basic stubs.
  Additional Layouts:
    - GridLayout (2D/3D)
    - CircularLayout/SphericalLayout
    - HierarchicalLayout (for tree-like structures)
    - Progress: TreeMapLayout and RadialLayout enhanced beyond basic stubs.
```

--------------------------------

### API for Interaction Model in Spacegraph.js

Source: https://github.com/automenta/spacegraphjs/blob/main/TODO.md

This API defines user interaction capabilities, including 3D node dragging with depth adjustment, flexible selection models (single, multi, group), and the ability to pin nodes.

```APIDOC
Interaction Model API:
  3D Dragging:
    - Implements node dragging in 3D space.
    - Supports modifier keys for depth adjustment.
  Selection Model:
    - Supports single-select.
    - Supports multi-select (e.g., with Shift+Click).
    - Supports group dragging.
  Node Pinning:
    - Allows users to pin nodes to fix their position during layout calculations.
```

--------------------------------

### Handle Unhandled Promise Rejections

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

Sets up a global event listener to catch any promise rejections that are not explicitly handled by a `.catch()` block. This is crucial for debugging asynchronous operations, as it logs the reason for the unhandled rejection to the console, helping developers identify and fix potential issues in promise chains.

```javascript
window.addEventListener('unhandledrejection', function(e) { console.error('Unhandled promise rejection:', e.reason); });
```

--------------------------------

### Define Import Map for SpaceGraphJS Dependencies

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

Configures import maps for SpaceGraphJS, mapping module names like 'three' and 'gsap' to their CDN URLs. This allows modern browsers to load these dependencies directly via their module names, simplifying development and deployment.

```JavaScript
{ "imports": { "three": "https://cdn.jsdelivr.net/npm/three@0.177.0/build/three.module.js", "three/addons/": "https://cdn.jsdelivr.net/npm/three@0.177.0/examples/jsm/", "gsap": "https://cdn.jsdelivr.net/npm/gsap@3.12.5/index.js" } }
```

--------------------------------

### API for Performance Optimization in Spacegraph.js

Source: https://github.com/automenta/spacegraphjs/blob/main/TODO.md

This API details strategies for optimizing performance, including instanced rendering for high object counts, Level of Detail (LOD) for complex geometries, and parallelization of heavy calculations.

```APIDOC
Performance Optimization API:
  Instanced Rendering:
    - Implemented for nodes and edges to efficiently render thousands of objects.
  Level of Detail (LOD):
    - Uses LODs for complex node geometries and text labels to maintain high frame rates.
  Parallelization:
    - Offloads heavy layout calculations to Web Workers.
```

--------------------------------

### API for Advanced Camera and View Management in Spacegraph.js

Source: https://github.com/automenta/spacegraphjs/blob/main/TODO.md

This API covers advanced camera modes, the ability to save and restore camera states, and the implementation of an optional minimap for navigating large graphs.

```APIDOC
Advanced Camera and View Management API:
  Camera Modes:
    - FreeCamera (FPS-style)
    - AutoCamera (auto-frame/follow)
  View Management:
    - API to save and restore camera states ("Named Views").
  Minimap:
    - Implements an optional minimap for navigating large graphs.
```

--------------------------------

### API for Mature Node and Edge Systems in Spacegraph.js

Source: https://github.com/automenta/spacegraphjs/blob/main/TODO.md

This API defines the structure for creating and managing different node types via a NodeFactory, including HTML and shape-based nodes, and extends edge capabilities with new types and styling options.

```APIDOC
Node and Edge Systems API:
  NodeFactory:
    - Supports registering and creating different node types.
  Core Node Types:
    - HtmlNode: For displaying rich HTML/CSS content.
    - ShapeNode: For basic 3D shapes (Sphere, Box), with support for GLTF model imports.
  Edge System Enhancements:
    - Edge Types:
      - CurvedEdge (Bezier/Spline)
      - LabeledEdge
    - Styling:
      - Dashed lines
      - Color gradients
      - Arrowheads
```

--------------------------------

### API for Advanced Rendering and Visuals in Spacegraph.js

Source: https://github.com/automenta/spacegraphjs/blob/main/TODO.md

This API section details enhancements for visual quality, including improved edge rendering, post-processing effects, and comprehensive lighting controls to enhance depth and realism.

```APIDOC
Rendering and Visuals API:
  Edges:
    - Replaces THREE.Line with Line2 for variable thickness and superior visual quality.
  Post-Processing:
    - Integrates Postprocessing effects:
      - Bloom
      - Screen Space Ambient Occlusion (SSAO)
      - Outline effect (on selection/hover)
  Lighting Control:
    - Provides developer API to configure scene lighting:
      - Ambient Light
      - Directional Light
      - Point Light
    - Enables shadows for improved depth perception.
```

--------------------------------

### Define JavaScript Module Imports with Import Map

Source: https://github.com/automenta/spacegraphjs/blob/main/dist-demo/index.html

This snippet defines an import map, a standard way to control the behavior of JavaScript module imports. It maps module specifiers like 'three' and 'gsap' to their respective CDN URLs, allowing direct import in browser environments without a build step. This configuration is typically placed in a <script type="importmap"> tag in HTML.

```JSON
{ "imports": { "three": "https://cdn.jsdelivr.net/npm/three@0.177.0/build/three.module.js", "three/addons/": "https://cdn.jsdelivr.net/npm/three@0.177.0/examples/jsm/", "gsap": "https://cdn.jsdelivr.net/npm/gsap@3.12.5/index.js" } }
```

--------------------------------

### CSS Styles for Error Handling UI in SpaceGraphJS Demo

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

This CSS provides styling for a user-friendly error display. It defines the appearance of an error container, title, description, and action buttons, ensuring consistent visual feedback for issues.

```CSS
.error-container { max-width: 600px; margin: 50px auto; padding: 20px; background: white; border-radius: 8px; box-shadow: 0 4px 20px rgba(0,0,0,0.1); }
.error-title { color: #dc3545; font-size: 24px; margin-bottom: 15px; display: flex; align-items: center; gap: 10px; }
.error-description { color: #6c757d; line-height: 1.6; margin-bottom: 20px; }
.error-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.error-btn { padding: 10px 20px; border: none; border-radius: 4px; cursor: pointer; font-weight: 500; text-decoration: none; display: inline-block; transition: transform 0.2s, box-shadow 0.2s; }
.error-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.error-btn.primary { background: #007bff; color: white; }
.error-btn.secondary { background: #6c757d; color: white; }
```

--------------------------------

### Display Browser Compatibility Warnings and Errors

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

Renders UI messages based on the results of feature detection. Critical issues halt initialization and display a full-screen error message prompting the user to update their browser. Non-critical warnings are shown temporarily at the top of the screen, allowing the application to proceed.

```JavaScript
function showFeatureWarnings(detection) {
  const warningEl = document.getElementById('feature-warning');
  const contentEl = document.getElementById('warning-content');
  if (detection.critical.length > 0) {
    document.getElementById('loading-screen').innerHTML = ` <div class="error-container"> <div class="error-title"> ❌ Compatibility Issues </div> <div class="error-description"> Your browser is missing critical features required for SpaceGraphJS: <ul style="margin: 10px 0; padding-left: 20px;"> ${detection.critical.map(feature => `<li>${feature}</li>`).join('')} </ul> Please try using a modern browser like Chrome, Firefox, or Safari. </div> <div class="error-actions"> <button class="error-btn primary" onclick="location.reload()"> 🔄 Try Again </button> <a href="https://browsehappy.com/" class="error-btn secondary" target="_blank"> 🌐 Update Browser </a> </div> </div> `;
    return false;
  } else if (detection.warnings.length > 0) {
    contentEl.innerHTML = `Some features may be limited:<br>• ${detection.warnings.join('<br>• ')}`;
    warningEl.style.display = 'block';
    setTimeout(() => {
      warningEl.style.display = 'none';
    }, 10000);
  }
  return true;
}
```

--------------------------------

### API for Data Management in Spacegraph.js

Source: https://github.com/automenta/spacegraphjs/blob/main/TODO.md

This API defines functionalities for data serialization (export/import), a clear data binding interface for external sources, and robust support for real-time programmatic updates to enable collaborative features.

```APIDOC
Data Management API:
  Serialization:
    - Implements export/import functionality for common graph formats (JSON, GraphML, GEXF).
  Data Binding API:
    - Provides a clear API for applications to bind node/edge properties to external data sources.
    - Supports pushing updates efficiently.
  API for Real-Time:
    - Ensures robustness for rapid, programmatic changes.
    - Enables applications to build collaborative features.
```

--------------------------------

### Global JavaScript Error Handling with UI Feedback

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

Implements a global error handler that catches uncaught exceptions across the application. If an error occurs while a loading screen is still visible, it dynamically updates the loading screen to display a user-friendly error message, including the error details, and provides a 'Reload Page' button for recovery. This prevents the application from appearing unresponsive or broken during initial load failures.

```javascript
window.addEventListener('error', function(e) { console.error('Global error:', e.error); if (document.getElementById('loading-screen').style.display !== 'none') { document.getElementById('loading-screen').innerHTML = " <div class=\"error-container\"> <div class=\"error-title\"> ❌ Unexpected Error </div> <div class=\"error-description\"> An unexpected error occurred while loading the demo system. <br><br> <strong>Error:</strong> ${e.error?.message || e.message || 'Unknown error'} </div> <div class=\"error-actions\"> <button class=\"error-btn primary\" onclick=\"location.reload()\"> 🔄 Reload Page </button> </div> </div> "; } });
```

--------------------------------

### Detect Browser Compatibility Features

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

Checks for essential browser features such as WebGL, WebGL2, Web Workers, Canvas, ES6 support, Fetch API, Promises, and ES6 Modules. It returns an object categorizing features into critical, warning, and supported, which is used to determine if the application can run or if warnings should be displayed.

```JavaScript
function detectFeatures() {
  const features = {
    webgl: !!window.WebGLRenderingContext,
    webgl2: !!window.WebGL2RenderingContext,
    workers: !!window.Worker,
    canvas: !!document.createElement('canvas').getContext,
    es6: (function() { try { eval('class Test{}; const x = () => {};'); return true; } catch (e) { return false; } })(),
    fetch: !!window.fetch,
    promise: !!window.Promise,
    modules: 'noModule' in HTMLScriptElement.prototype
  };
  const warnings = [];
  const critical = [];
  if (!features.webgl) critical.push('WebGL support');
  if (!features.canvas) critical.push('Canvas support');
  if (!features.es6) critical.push('ES6 support');
  if (!features.modules) critical.push('ES6 modules');
  if (!features.fetch) warnings.push('Fetch API (some features may not work)');
  if (!features.workers) warnings.push('Web Workers (performance features disabled)');
  if (!features.webgl2) warnings.push('WebGL 2.0 (some advanced features may be limited)');
  return { features, warnings, critical };
}
```

--------------------------------

### Privacy-Friendly Usage Analytics with sendBeacon

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

Implements basic, privacy-friendly usage analytics using `navigator.sendBeacon`. This method sends a small amount of data (timestamp, user agent, viewport, detected features) to an analytics endpoint when the page unloads, without delaying the unload process. The analytics collection is conditionally enabled only if `sendBeacon` is supported and the application is not running on 'localhost', ensuring data is collected only in production environments.

```javascript
if (navigator.sendBeacon && window.location.hostname !== 'localhost') { window.addEventListener('load', () => { const data = { timestamp: Date.now(), userAgent: navigator.userAgent, viewport: `${window.innerWidth}x${window.innerHeight}`, features: Object.keys(detectFeatures().features).filter(f => detectFeatures().features[f]) }; // This would send to your analytics endpoint // navigator.sendBeacon('/analytics/demo-load', JSON.stringify(data)); }); }
```

--------------------------------

### CSS Styles for Feature Detection Warning in SpaceGraphJS Demo

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

This CSS defines the appearance of a warning notification for browser feature support. It positions a small, dismissible warning box in the top-right corner, informing users about potential compatibility issues.

```CSS
.feature-warning { position: fixed; top: 20px; right: 20px; max-width: 300px; padding: 15px; background: #fff3cd; border: 1px solid #ffeaa7; border-radius: 4px; color: #856404; font-size: 13px; z-index: 10000; box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.feature-warning .warning-title { font-weight: bold; margin-bottom: 5px; }
.feature-warning .close-warning { position: absolute; top: 5px; right: 8px; background: none; border: none; font-size: 16px; cursor: pointer; color: #856404; padding: 0; width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; }
```

--------------------------------

### JavaScript Module Import Map Configuration

Source: https://github.com/automenta/spacegraphjs/blob/main/index.html

This JSON object defines an import map, a standard web platform feature that allows developers to control the behavior of JavaScript module imports. It maps module specifiers (like 'three' or 'gsap') to their corresponding URLs, typically from a CDN, simplifying module management and ensuring consistent loading paths for dependencies.

```JSON
{ "imports": { "three": "https://cdn.jsdelivr.net/npm/three@0.177.0/build/three.module.js", "three/addons/": "https://cdn.jsdelivr.net/npm/three@0.177.0/examples/jsm/", "gsap": "https://cdn.jsdelivr.net/npm/gsap@3.12.5/index.js" } }
```

--------------------------------

### Detect Browser Graphics Performance Tier

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

Analyzes the WebGL renderer information to estimate the graphics performance tier (high, medium, low). This function creates a temporary canvas and WebGL context to query GPU vendor and renderer strings, using simple heuristics to categorize performance for tailored user experiences.

```JavaScript
function detectPerformance() {
  const canvas = document.createElement('canvas');
  const gl = canvas.getContext('webgl') || canvas.getContext('experimental-webgl');
  if (!gl) return { tier: 'low', message: 'Limited graphics support' };
  const debugInfo = gl.getExtension('WEBGL_debug_renderer_info');
  const renderer = debugInfo ? gl.getParameter(debugInfo.UNMASKED_RENDERER_WEBGL) : '';
  const vendor = debugInfo ? gl.getParameter(debugInfo.UNMASKED_VENDOR_WEBGL) : '';
  const isHighEnd = /nvidia|amd|intel.*iris|intel.*uhd.*6|apple/i.test(renderer);
  const isIntegrated = /intel.*hd|intel.*uhd.*[1-5]|adreno.*[1-5]/i.test(renderer);
  if (isHighEnd) return { tier: 'high', message: 'Excellent graphics performance expected' };
  if (isIntegrated) return { tier: 'medium', message: 'Good graphics performance expected' };
  return { tier: 'low', message: 'Basic graphics performance expected' };
}
```

--------------------------------

### CSS Layout Adjustments for SpaceGraphJS Demo Elements

Source: https://github.com/automenta/spacegraphjs/blob/main/enhanced-index.html

This CSS snippet adjusts the visibility and positioning of key demo elements. It hides original UI components like page selectors and toolbars, while ensuring the mindmap container occupies the full viewport for an immersive experience.

```CSS
#page-selector, #hud, #toolbar { display: none; }
#mindmap-container { position: fixed; inset: 0; z-index: 1; }
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.