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>

archive/temp_outputs/calibration_history.json

@@ -0,0 +1,29 @@
+[
+  {
+    "iteration": 1,
+    "n_training_samples": 55,
+    "confidence_score": 0.48,
+    "mass_mape": 5.199446351686856,
+    "freq_mape": 46.23527454811865,
+    "avg_selected_uncertainty": 0.3559015095233917,
+    "status": "LOW_CONFIDENCE"
+  },
+  {
+    "iteration": 2,
+    "n_training_samples": 60,
+    "confidence_score": 0.6,
+    "mass_mape": 5.401324621678541,
+    "freq_mape": 88.80499920325646,
+    "avg_selected_uncertainty": 0.23130142092704772,
+    "status": "MEDIUM_CONFIDENCE"
+  },
+  {
+    "iteration": 3,
+    "n_training_samples": 65,
+    "confidence_score": 0.6,
+    "mass_mape": 4.867728649442469,
+    "freq_mape": 76.78009245481465,
+    "avg_selected_uncertainty": 0.17344236522912979,
+    "status": "MEDIUM_CONFIDENCE"
+  }
+]