add config page and terminal page

CLAUDE.md

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+# NebuleAir Pro 4G Development Guidelines
+
+## Commands
+- `sudo systemctl restart master_nebuleair.service` - Restart main service
+- `sudo systemctl status master_nebuleair.service` - Check service status
+- Manual testing: Run individual Python scripts (e.g., `sudo python3 NPM/get_data_modbus_v3.py`)
+- Installation: `sudo ./installation_part1.sh` followed by `sudo ./installation_part2.sh`
+
+## Code Style
+- **Language:** Python 3 with HTML/JS/CSS for web interface
+- **Structure:** Organized by component (BME280, NPM, RTC, SARA, etc.)
+- **Naming:** snake_case for variables/functions, version suffix for iterations (e.g., `_v2.py`)
+- **Documentation:** Include docstrings with script purpose and usage instructions
+- **Error Handling:** Use try/except blocks for I/O operations, print errors to logs
+- **Configuration:** All settings in `config.json`, avoid hardcoding values
+- **Web Components:** Follow Bootstrap patterns, use fetch() for AJAX
+
+## Best Practices
+- Check if features are enabled in config before execution
+- Close database connections after use
+- Round sensor readings to appropriate precision
+- Keep web interface mobile-responsive
+- Include error handling for network operations
+- Follow existing patterns when adding new functionality