Fix issue where frontend was ignoring server's Content-Disposition
header and using only config name + '.csv' for exported files.
Added getFilenameFromResponse() helper to extract proper filename
from Content-Disposition header and use it for downloaded files.
Applied to both:
- exportCSV() function
- exportCSVWithCustomPrice() function
Now files are downloaded with correct format:
YYYY-MM-DD (PROJECT-NAME) BOM.csv
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
08feda9af6