feat: Major update with validators, skills, dashboard, and docs reorganization

- Add validation framework (config, model, results, study validators)
- Add Claude Code skills (create-study, run-optimization, generate-report,
  troubleshoot, analyze-model)
- Add Atomizer Dashboard (React frontend + FastAPI backend)
- Reorganize docs into structured directories (00-09)
- Add neural surrogate modules and training infrastructure
- Add multi-objective optimization support

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

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

docs/08_ARCHIVE/historical/QUICK_CONFIG_REFERENCE.md

@@ -0,0 +1,81 @@
+# Quick Configuration Reference
+
+## Change NX Version (e.g., when NX 2506 is released)
+
+**Edit ONE file**: [`config.py`](../config.py)
+
+```python
+# Line 14-15
+NX_VERSION = "2506"  # ← Change this
+NX_INSTALLATION_DIR = Path(f"C:/Program Files/Siemens/NX{NX_VERSION}")
+```
+
+**That's it!** All modules automatically use new paths.
+
+---
+
+## Change Python Environment
+
+**Edit ONE file**: [`config.py`](../config.py)
+
+```python
+# Line 49
+PYTHON_ENV_NAME = "my_new_env"  # ← Change this
+```
+
+---
+
+## Verify Configuration
+
+```bash
+python config.py
+```
+
+Output shows all paths and validates they exist.
+
+---
+
+## Using Config in Your Code
+
+```python
+from config import (
+    NX_RUN_JOURNAL,       # Path to run_journal.exe
+    NX_MATERIAL_LIBRARY,  # Path to material library XML
+    PYTHON_ENV_NAME,      # Current environment name
+    get_nx_journal_command,  # Helper function
+)
+
+# Generate journal command
+cmd = get_nx_journal_command(
+    journal_script,
+    arg1,
+    arg2
+)
+```
+
+---
+
+##  What Changed?
+
+**OLD** (hardcoded paths in multiple files):
+- `optimization_engine/nx_updater.py`: Line 66
+- `dashboard/api/app.py`: Line 598
+- `README.md`: Line 92
+- `docs/NXOPEN_INTELLISENSE_SETUP.md`: Line 269
+- ...and more
+
+**NEW** (all use `config.py`):
+- Edit `config.py` once
+- All files automatically updated
+
+---
+
+## Files Using Config
+
+- ✅ `optimization_engine/nx_updater.py`
+- ✅ `dashboard/api/app.py`
+- Future: All NX-related modules will use config
+
+---
+
+**See also**: [SYSTEM_CONFIGURATION.md](SYSTEM_CONFIGURATION.md) for full documentation