feat: Add MLP surrogate with Turbo Mode for 100x faster optimization

Neural Acceleration (MLP Surrogate):
- Add run_nn_optimization.py with hybrid FEA/NN workflow
- MLP architecture: 4-layer (64->128->128->64) with BatchNorm/Dropout
- Three workflow modes:
  - --all: Sequential export->train->optimize->validate
  - --hybrid-loop: Iterative Train->NN->Validate->Retrain cycle
  - --turbo: Aggressive single-best validation (RECOMMENDED)
- Turbo mode: 5000 NN trials + 50 FEA validations in ~12 minutes
- Separate nn_study.db to avoid overloading dashboard

Performance Results (bracket_pareto_3obj study):
- NN prediction errors: mass 1-5%, stress 1-4%, stiffness 5-15%
- Found minimum mass designs at boundary (angle~30deg, thick~30mm)
- 100x speedup vs pure FEA exploration

Protocol Operating System:
- Add .claude/skills/ with Bootstrap, Cheatsheet, Context Loader
- Add docs/protocols/ with operations (OP_01-06) and system (SYS_10-14)
- Update SYS_14_NEURAL_ACCELERATION.md with MLP Turbo Mode docs

NX Automation:
- Add optimization_engine/hooks/ for NX CAD/CAE automation
- Add study_wizard.py for guided study creation
- Fix FEM mesh update: load idealized part before UpdateFemodel()

New Study:
- bracket_pareto_3obj: 3-objective Pareto (mass, stress, stiffness)
- 167 FEA trials + 5000 NN trials completed
- Demonstrates full hybrid workflow

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

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

docs/protocols/extensions/templates/protocol_template.md

@@ -0,0 +1,112 @@
+# {LAYER}_{NUMBER}_{NAME}
+
+<!--
+PROTOCOL: {Full Protocol Name}
+LAYER: {Operations|System|Extensions}
+VERSION: 1.0
+STATUS: Active
+LAST_UPDATED: {YYYY-MM-DD}
+PRIVILEGE: {user|power_user|admin}
+LOAD_WITH: [{dependency_protocols}]
+-->
+
+## Overview
+
+{1-3 sentence description of what this protocol does and why it exists.}
+
+---
+
+## When to Use
+
+| Trigger | Action |
+|---------|--------|
+| {keyword or user intent} | Follow this protocol |
+| {condition} | Follow this protocol |
+
+---
+
+## Quick Reference
+
+{Key information in table format for fast lookup}
+
+| Parameter | Default | Description |
+|-----------|---------|-------------|
+| {param} | {value} | {description} |
+
+---
+
+## Detailed Specification
+
+### Section 1: {Topic}
+
+{Detailed content}
+
+```python
+# Code example if applicable
+```
+
+### Section 2: {Topic}
+
+{Detailed content}
+
+---
+
+## Configuration
+
+{If applicable, show configuration examples}
+
+```json
+{
+  "setting": "value"
+}
+```
+
+---
+
+## Examples
+
+### Example 1: {Scenario Name}
+
+{Complete working example with context}
+
+```python
+# Full working code example
+```
+
+### Example 2: {Scenario Name}
+
+{Another example showing different use case}
+
+---
+
+## Troubleshooting
+
+| Symptom | Cause | Solution |
+|---------|-------|----------|
+| {error message or symptom} | {root cause} | {how to fix} |
+| {symptom} | {cause} | {solution} |
+
+---
+
+## Cross-References
+
+- **Depends On**: [{protocol_name}]({relative_path})
+- **Used By**: [{protocol_name}]({relative_path})
+- **See Also**: [{related_doc}]({path})
+
+---
+
+## Implementation Files
+
+{If applicable, list the code files that implement this protocol}
+
+- `path/to/file.py` - {description}
+- `path/to/other.py` - {description}
+
+---
+
+## Version History
+
+| Version | Date | Changes |
+|---------|------|---------|
+| 1.0 | {YYYY-MM-DD} | Initial release |