Dashboard Goal: Upload and parse X12 (277, 835, etc.) with no database (in-memory). Next: add validation, mapping, and optional SQL persistence. Upload X12 Upload .x12/.txt/.edi. We detect separators and extract key data. Go Files Searchable, paged list of parsed files and drill-down details. Go 835 Payment Posting Create posting batches from ERAs (835) and review claim-level totals. Go 277 Status Dashboard Aggregate STC status codes across 277 files with search + paging. Go