docs: Comprehensive documentation update for Dashboard V3 and Canvas

## Documentation Updates
- DASHBOARD.md: Updated to V3.0 with Canvas V3 features, file browser, introspection
- DASHBOARD_IMPLEMENTATION_STATUS.md: Marked Canvas V3 features as COMPLETE
- CANVAS.md: New comprehensive guide for Canvas Builder V3 with all features
- CLAUDE.md: Added dashboard quick reference and Canvas V3 features

## Canvas V3 Features Documented
- File Browser: Browse studies directory for model files
- Model Introspection: Auto-discover expressions, solver type, dependencies
- One-Click Add: Add expressions as design variables instantly
- Claude Bug Fixes: WebSocket reconnection, SQL errors resolved
- Health Check: /api/health endpoint for monitoring

## Backend Services
- NX introspection service with expression discovery
- File browser API with type filtering
- Claude session management improvements
- Context builder enhancements

## Frontend Components
- FileBrowser: Modal for file selection with search
- IntrospectionPanel: View discovered model information
- ExpressionSelector: Dropdown for design variable configuration
- Improved chat hooks with reconnection logic

## Plan Documents
- Added RALPH_LOOP_CANVAS_V2/V3 implementation records
- Added ATOMIZER_DASHBOARD_V2_MASTER_PLAN
- Added investigation and sync documentation

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

atomizer-dashboard/frontend/src/lib/canvas/schema.ts

@@ -34,14 +34,60 @@ export interface DesignVarNodeData extends BaseNodeData {
   expressionName?: string;
   minValue?: number;
   maxValue?: number;
+  baseline?: number;
   unit?: string;
+  enabled?: boolean;
+  notes?: string;
 }
 
+// Extractor-specific config types
+export interface ZernikeConfig {
+  innerRadius?: number;
+  outerRadius?: number;
+  nModes?: number;
+  filterLowOrders?: number;
+  subcases?: string[];
+  subcaseLabels?: Record<string, string>;
+  referenceSubcase?: string;
+  extractMethod?: 'extract_relative' | 'extract_rms' | 'extract_absolute';
+}
+
+export interface DisplacementConfig {
+  subcase?: number;
+  nodeSet?: string;
+  component?: 'magnitude' | 'x' | 'y' | 'z';
+}
+
+export interface StressConfig {
+  subcase?: number;
+  elementSet?: string;
+  stressType?: 'vonMises' | 'principal' | 'max_shear';
+}
+
+export interface MassConfig {
+  source?: 'bdf' | 'expression';
+  expressionName?: string;
+}
+
+export interface FrequencyConfig {
+  modeNumber?: number;
+}
+
+export type ExtractorConfig = Record<string, unknown>;
+
 export interface ExtractorNodeData extends BaseNodeData {
   type: 'extractor';
   extractorId?: string;
   extractorName?: string;
-  config?: Record<string, unknown>;
+  extractorType?: 'zernike_opd' | 'displacement' | 'stress' | 'mass' | 'frequency';
+  extractMethod?: string;
+  config?: ExtractorConfig;
+  // Zernike-specific (for quick access)
+  innerRadius?: number;
+  nModes?: number;
+  subcases?: string[];
+  // Output mapping
+  outputNames?: string[];
 }
 
 export interface ObjectiveNodeData extends BaseNodeData {
@@ -49,6 +95,9 @@ export interface ObjectiveNodeData extends BaseNodeData {
   name?: string;
   direction?: 'minimize' | 'maximize';
   weight?: number;
+  extractorRef?: string;  // Reference to extractor ID
+  outputName?: string;    // Which output from the extractor
+  penaltyWeight?: number; // For hard constraints (penalty method)
 }
 
 export interface ConstraintNodeData extends BaseNodeData {
@@ -62,6 +111,11 @@ export interface AlgorithmNodeData extends BaseNodeData {
   type: 'algorithm';
   method?: 'TPE' | 'CMA-ES' | 'NSGA-II' | 'GP-BO' | 'RandomSearch';
   maxTrials?: number;
+  // CMA-ES specific
+  sigma0?: number;
+  restartStrategy?: 'none' | 'ipop' | 'bipop';
+  // Weight settings for multi-objective
+  objectiveWeights?: Record<string, number>;
 }
 
 export interface SurrogateNodeData extends BaseNodeData {