feat(element-configs): Add TextConfig + fix Text element sizing bug

- TextConfig with 10 semantic typography variants
  * display, h1, h2, h3, h4 (headings)
  * body, body-sm (body text)
  * caption, label, code (special text)
- All variants use design tokens
- Fix Text element bug: width 'auto' instead of stretching to 100%
- Text now properly sizes to content with display: flex + width: auto

Part of STYLE-002 MVP 1 implementation.
Next: MVP 2 - Node Integration.

packages/noodl-editor/src/editor/src/models/ElementConfigs/configs/TextConfig.ts

@@ -0,0 +1,146 @@
+/**
+ * TextConfig
+ *
+ * Element configuration for Text nodes.
+ * Defines default styling and 10 typography variants.
+ *
+ * @module noodl-editor/models/ElementConfigs/configs
+ * @since 1.2.0
+ */
+
+import type { ElementConfig } from '../ElementConfigTypes';
+
+/**
+ * Text element configuration
+ * Provides comprehensive typography system with semantic variants
+ */
+export const TextConfig: ElementConfig = {
+  nodeType: 'net.noodl.visual.text',
+
+  description: 'Text element with semantic typography variants',
+
+  categories: ['text', 'typography', 'content'],
+
+  // Default properties applied when a new Text is created
+  defaults: {
+    // FIX: Change from width: 100% to width: auto
+    width: 'auto',
+    height: 'auto',
+
+    // Layout - Enable flex for proper auto-sizing
+    display: 'inline-block',
+
+    // Typography
+    fontSize: 'var(--text-base)',
+    fontWeight: 'var(--font-normal)',
+    fontFamily: 'var(--font-sans)',
+    lineHeight: 'var(--leading-normal)',
+    color: 'var(--foreground)',
+
+    // Spacing
+    margin: '0',
+    padding: '0',
+
+    // Text behavior
+    whiteSpace: 'normal',
+    wordWrap: 'break-word',
+    textAlign: 'left',
+
+    // Default variant
+    _variant: 'body'
+  },
+
+  // Typography variants - semantic naming
+  variants: {
+    // Display: Extra large, hero text
+    display: {
+      fontSize: 'var(--text-4xl)',
+      fontWeight: 'var(--font-bold)',
+      lineHeight: 'var(--leading-tight)',
+      letterSpacing: '-0.02em',
+      color: 'var(--foreground)'
+    },
+
+    // H1: Main page heading
+    h1: {
+      fontSize: 'var(--text-3xl)',
+      fontWeight: 'var(--font-bold)',
+      lineHeight: 'var(--leading-tight)',
+      letterSpacing: '-0.015em',
+      color: 'var(--foreground)'
+    },
+
+    // H2: Section heading
+    h2: {
+      fontSize: 'var(--text-2xl)',
+      fontWeight: 'var(--font-semibold)',
+      lineHeight: 'var(--leading-tight)',
+      letterSpacing: '-0.01em',
+      color: 'var(--foreground)'
+    },
+
+    // H3: Subsection heading
+    h3: {
+      fontSize: 'var(--text-xl)',
+      fontWeight: 'var(--font-semibold)',
+      lineHeight: 'var(--leading-snug)',
+      color: 'var(--foreground)'
+    },
+
+    // H4: Small heading
+    h4: {
+      fontSize: 'var(--text-lg)',
+      fontWeight: 'var(--font-medium)',
+      lineHeight: 'var(--leading-snug)',
+      color: 'var(--foreground)'
+    },
+
+    // Body: Default text (16px)
+    body: {
+      fontSize: 'var(--text-base)',
+      fontWeight: 'var(--font-normal)',
+      lineHeight: 'var(--leading-normal)',
+      color: 'var(--foreground)'
+    },
+
+    // Body Small: Slightly smaller (14px)
+    'body-sm': {
+      fontSize: 'var(--text-sm)',
+      fontWeight: 'var(--font-normal)',
+      lineHeight: 'var(--leading-normal)',
+      color: 'var(--foreground)'
+    },
+
+    // Caption: Small text for captions (12px)
+    caption: {
+      fontSize: 'var(--text-xs)',
+      fontWeight: 'var(--font-normal)',
+      lineHeight: 'var(--leading-relaxed)',
+      color: 'var(--muted-foreground)',
+      letterSpacing: '0.01em'
+    },
+
+    // Label: Form labels, uppercase small text
+    label: {
+      fontSize: 'var(--text-sm)',
+      fontWeight: 'var(--font-medium)',
+      lineHeight: 'var(--leading-none)',
+      color: 'var(--foreground)',
+      textTransform: 'uppercase',
+      letterSpacing: '0.05em'
+    },
+
+    // Code: Monospace text for code snippets
+    code: {
+      fontSize: 'var(--text-sm)',
+      fontWeight: 'var(--font-normal)',
+      fontFamily: 'var(--font-mono)',
+      lineHeight: 'var(--leading-relaxed)',
+      color: 'var(--foreground)',
+      backgroundColor: 'var(--muted)',
+      padding: '2px 6px',
+      borderRadius: 'var(--radius-sm)',
+      whiteSpace: 'pre-wrap'
+    }
+  }
+};

packages/noodl-editor/src/editor/src/models/ElementConfigs/configs/index.ts

@@ -9,9 +9,7 @@
  */
 
 export { ButtonConfig } from './ButtonConfig';
-
-// TextConfig will be added next
-// export { TextConfig } from './TextConfig';
+export { TextConfig } from './TextConfig';
 
 // Other configs to be implemented:
 // export { GroupConfig } from './GroupConfig';

packages/noodl-viewer-react/src/nodes/visual/text.js

@@ -28,7 +28,9 @@ const TextNode = {
   },
   defaultCss: {
     position: 'relative',
-    display: 'flex'
+    display: 'flex',
+    // FIX: Text should size to content by default, not stretch to parent width
+    width: 'auto'
   },
   inputProps: {
     text: {