Rewrite stage.cy.ts to follow the same pattern as excel.cy.ts: open MPE_X_TEST, attach regular_excel.xlsx, submit to create staged data, then test the formatted/unformatted toggle on the stage page. The date assertion is now dynamic: reads the raw SOME_DATE value from the unformatted view and computes the expected SAS date9. formatted value, rather than hardcoding 12FEB1960. Remove the fixture stageSubmission code from makedata.js — staged data is created at runtime by stagedata.js, not by makedata.