VLM TM30 helper

Internal tool for the staff of Villa Luna Mara (Koh Phangan, Thailand). When a stay is ready for the TM30 notification to Thai Immigration, the helper takes the official TM30 Excel file for that stay from the villa's own staff system and fills the TM30 portal's "Import Excel" page: it chooses the villa's address, enters the check-in date, puts the file in and opens the portal's preview. A staff member checks the preview and presses Save in the portal; the helper never saves or submits anything itself. It only works for signed-in staff of Villa Luna Mara. It stores no guest data, passwords or keys.