feat(canvas): Add Phase 3+4 - Bidirectional sync, templates, and visual polish

Phase 3 - Bidirectional Sync:
- Add loadFromIntent and loadFromConfig to canvas store
- Create useIntentParser hook for parsing Claude messages
- Create ConfigImporter component (file upload, paste JSON, load study)
- Add import/clear buttons to CanvasView header

Phase 4 - Templates & Polish:
- Create template library with 5 presets:
  - Mass Minimization (single-objective)
  - Multi-Objective Pareto (NSGA-II)
  - Turbo Mode (with MLP surrogate)
  - Mirror Zernike (optical optimization)
  - Frequency Optimization (modal)
- Create TemplateSelector component with category filters
- Enhanced BaseNode with animations, glow effects, status indicators
- Add colorBg to all node types for visual distinction
- Add notification toast system
- Update all exports

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

atomizer-dashboard/frontend/src/components/canvas/index.ts

@@ -1,7 +1,16 @@
+// Main Canvas Component
 export { AtomizerCanvas } from './AtomizerCanvas';
+
+// Palette
 export { NodePalette } from './palette/NodePalette';
+
+// Panels
 export { NodeConfigPanel } from './panels/NodeConfigPanel';
 export { ValidationPanel } from './panels/ValidationPanel';
 export { ExecuteDialog } from './panels/ExecuteDialog';
 export { ChatPanel } from './panels/ChatPanel';
+export { ConfigImporter } from './panels/ConfigImporter';
+export { TemplateSelector } from './panels/TemplateSelector';
+
+// Nodes
 export * from './nodes';