New page for tracing TMTT test station defects back to upstream machines,
stations, and workflows. Three-stage data pipeline (TMTT detection →
SPLITFROMID BFS + COMBINEDASSYLOTS merge expansion → upstream history),
6 KPI cards, 6 Pareto charts, daily trend, paginated LOT detail table.
Summary/detail API separation reduces response from 72 MB to ~16 KB summary
+ ~110 KB/page detail. Loss reasons cached in Redis with 24h TTL (205 types).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
