UTM Converter Pro (QGIS plugin)
-------------------------------
Features
- Convert WGS84 latitude/longitude (decimal degrees) -> UTM Easting, Northing, Zone (auto-detects zone)
- Convert UTM -> WGS84 (latitude/longitude)
- Batch conversion from CSV or Excel (.xlsx / .xls)
  * Requires 'pandas' + 'openpyxl' (for .xlsx) or 'xlrd' (for .xls). If not available, the plugin falls back to CSV output or prompts you to install them.
- Input validation and near-zone-boundary warning (~50 m)
- Compatible with QGIS 3.x (min 3.0) to 4.0
- Clean PyQt dialog UI (toolbar icon + Plugins menu)

Install
1) QGIS: Plugins > Manage and Install Plugins > Install from ZIP
2) Choose this ZIP. Enable the plugin. Open 'UTM Converter Pro' from the toolbar or Plugins menu.

Batch File Format
- CSV: must contain columns named 'lat'/'lon' or 'latitude'/'longitude' (case-insensitive). Extra columns are preserved.
- Excel: same; first sheet is used by default.

Notes
- For .xlsx write support, ensure 'pandas' and 'openpyxl' are available in your QGIS Python environment.
- Without pandas, the plugin still reads/writes CSV just fine.
