Import Report — Requirements

Provide a comprehensive, downloadable report after each import.

Report contents: - Summary counts: Imported, Updated, Skipped, Errors - Row-level details: row_number, status (Imported/Updated/Skipped/Error), message - Downloadable CSV and JSON versions

UX notes: - Provide direct links from errors to the original uploaded row in Preview where possible - Allow re-run of failed rows only (partial re-import)