Initial commit: Home automation docs and CODESYS project

- Reorganized project: codesys/, docs/codesys|redesign|integration|reference/, scripts/
- CODESYS project and exports in codesys/
- Documentation index in docs/README.md
- Redesign and light naming configuration
- Water boiler control and safety design

Co-authored-by: Cursor <cursoragent@cursor.com>

.gitignore

@@ -0,0 +1,59 @@
+# Sensitive Information
+*.key
+*.pem
+*.crt
+secrets.yaml
+secrets.json
+*.env
+.env
+
+# Configuration files with sensitive data
+# Uncomment if you want to exclude these
+# configuration.yaml
+# mqtt.conf
+# zigbee2mqtt/configuration.yaml
+
+# Logs
+*.log
+logs/
+*.log.*
+
+# Backup files
+*.bak
+*.backup
+*.old
+
+# OS files
+.DS_Store
+Thumbs.db
+*.swp
+*.swo
+*~
+
+# IDE files
+.vscode/
+.idea/
+*.sublime-*
+
+# Temporary files
+tmp/
+temp/
+*.tmp
+
+# Node modules (if any)
+node_modules/
+
+# Python
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.Python
+venv/
+env/
+
+# CODESYS
+*.projbackup
+*.proj.user
+# Note: Binary .project files are large but may be needed
+# XML exports (*.export, *.xml) should be committed for documentation