Power Automate File Merger

I download a large number of raw Excel or CSV files into a single local folder every day and need them combined automatically into one master file. The flow has to pick up each new .xlsx or .csv it finds in that folder, append the rows in the right order, keep the column headers consistent, and save or overwrite a single consolidated file that I can open immediately.

A few details to keep in mind:
• Source location is a folder on my computer, not OneDrive or SharePoint.
• Only the data-merge step is required—no extra cleaning or reporting for now.
• The process should run either on a schedule or with a manual trigger I can launch in Power Automate Desktop.

Deliverables:
1. Fully-packaged Power Automate (Desktop or Cloud with gateway) flow ready to import.
2. A brief setup document or video showing how to adjust the folder path and output file name.
3. Test proof: a sample run that merges at least three example files into a single result.

If you have a proven way to handle header alignment and prevent duplicate rows, let me know—those touches will help me decide quickly.