[Echo Parse] Add Multi-File to CSV Conversion Support #43
Description
Currently, users can only convert a single audiogram into a CSV file. We need to implement support for multiple file uploads and generate a combined summary CSV. Additionally, the UI should display conversion progress tracking based on server responses.
Expected Features:
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Multi-File Upload & Conversion
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Allow users to upload multiple audiogram files.
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Backend should combine results into a single CSV file.
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Progress Indicator
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Track the number of processed files vs. total uploaded.
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Display progress using a counter, loading bar, or spinner with status text (e.g., “3 of 5 files converted”).