ttt-bug-fix

Diagnose and fix bugs in the TTT (Track and Trace) Django watchcase manufacturing system. Use for: wrong quantity displayed, button not working, API returning incorrect data, modal empty or crashing, stale data after reload, tray allocation errors, delink/reject confusion, SSOT violations, frontend doing backend calculations. Covers all modules: IQF, Brass QC, Brass Audit, Jig Loading, Input Screening, Day Planning, Spider Spindle, Jig Unloading.