feat: Add AtomizerField training data export and intelligent model discovery

Major additions:
- Training data export system for AtomizerField neural network training
- Bracket stiffness optimization study with 50+ training samples
- Intelligent NX model discovery (auto-detect solutions, expressions, mesh)
- Result extractors module for displacement, stress, frequency, mass
- User-generated NX journals for advanced workflows
- Archive structure for legacy scripts and test outputs
- Protocol documentation and dashboard launcher

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

studies/bracket_stiffness_optimization_atomizerfield/DASHBOARD.md

@@ -0,0 +1,48 @@
+# Dashboard Access
+
+## Quick Links
+
+| Dashboard | URL | Purpose |
+|-----------|-----|---------|
+| **Atomizer Dashboard** | [http://localhost:3003](http://localhost:3003) | Live Pareto plots, optimization monitoring |
+| **Optuna Dashboard** | [http://localhost:8081](http://localhost:8081) | Trial history, hyperparameter importance |
+
+## Starting the Dashboards
+
+### Atomizer Dashboard (Recommended)
+```bash
+# From project root - Terminal 1 (backend)
+cd atomizer-dashboard/backend
+python -m uvicorn api.main:app --host 0.0.0.0 --port 8000 --reload
+
+# From project root - Terminal 2 (frontend)
+cd atomizer-dashboard/frontend
+npm run dev
+```
+
+### Optuna Dashboard (This Study Only)
+```bash
+# From this study directory
+optuna-dashboard sqlite:///2_results/study.db --port 8081
+
+# Or from project root
+optuna-dashboard sqlite:///studies/bracket_stiffness_optimization_atomizerfield/2_results/study.db --port 8081
+```
+
+## What Each Dashboard Shows
+
+### Atomizer Dashboard (localhost:3003)
+- **Pareto Front**: Interactive scatter plot of stiffness vs mass
+- **Parallel Coordinates**: Visualize how design variables affect objectives
+- **Study List**: Compare multiple optimization studies
+- **Trial Progress**: Real-time updates during optimization
+
+### Optuna Dashboard (localhost:8081)
+- **Trial History**: Complete log of all trials with parameters and values
+- **Hyperparameter Importance**: Which variables matter most
+- **Optimization History**: Convergence over time
+- **Slice Plots**: 1D parameter sensitivity
+
+---
+
+**Tip**: The Atomizer Dashboard connects to any running study automatically. The Optuna Dashboard is study-specific and requires the database path.