I need a lightweight Python desktop app built with the CustomTkinter framework. The interface will have two clear tabs: Tab 1 – Excel I/O A small form lets me type or select values, then write them straight into a designated workbook and sheet. Reading should be just as simple: when I choose an existing record, the form fields repopulate instantly from the same file. Think pandas or openpyxl behind the scenes, but the user sees only clean entry boxes and a save / load trigger. Tab 2 – Live Bar Chart Using the same workbook, the second tab must render a bar chart that refreshes in real time whenever the underlying Excel data changes. A short polling interval or a file-watcher is fine as long as the graph updates smoothly without freezing the UI. Matplotlib, Plotly, or an equivalent library is acceptable so long as it integrates neatly inside the CustomTkinter canvas. Deliverables • Complete, well-commented .py source • Sample Excel file and any helper assets • Quick README with setup steps and required pip installs Acceptance If I can run the script, add or edit a row via the form, press save, and immediately see the bar chart reflect that change without restarting the program, the job is done.