feat: Add NX study models and optimization histories

Includes all study folders with NX models for development:
- bracket_stiffness_optimization (V1, V2, V3)
- drone_gimbal_arm_optimization
- simple_beam_optimization
- uav_arm_optimization (V1, V2)
- training_data_export_test
- uav_arm_atomizerfield_test

Contains .prt, .fem, .sim files and optimization databases.

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

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

studies/bracket_stiffness_optimization/2_results/optimization_summary.json

@@ -0,0 +1,41 @@
+{
+  "study_name": "bracket_stiffness_optimization",
+  "optimizer": "Protocol 10 - Intelligent Multi-Strategy",
+  "n_trials": 30,
+  "completed_trials": 30,
+  "feasible_trials": 18,
+  "infeasible_trials": 12,
+  "pruned_trials": 0,
+  "failed_trials": 0,
+  "elapsed_seconds": 0.462249,
+  "pareto_front_all": 16,
+  "pareto_front_feasible": 14,
+  "best_solution": {
+    "best_params": {
+      "support_angle": 65.24559155460827,
+      "tip_thickness": 27.09745933355004
+    },
+    "best_value": [
+      -14910.194937824257,
+      0.11645991891270796
+    ],
+    "best_trial": 10,
+    "is_multi_objective": true,
+    "pareto_front_size": 16,
+    "total_trials": 30,
+    "final_strategy": "random",
+    "landscape_analysis": null,
+    "strategy_recommendation": {
+      "confidence": 1.0,
+      "reasoning": "Insufficient data (30 trials) - using random exploration for landscape characterization",
+      "sampler_config": {
+        "type": "RandomSampler",
+        "params": {}
+      }
+    },
+    "transition_history": [],
+    "strategy_performance": {},
+    "protocol_used": "Protocol 10: Intelligent Multi-Strategy Optimization"
+  },
+  "timestamp": "2025-11-21T14:51:42.557284"
+}