# F-176 — Fix POS existing product search

POS search currently executes stale SQL against nonexistent variant fields (`v.name`, `v.active`, `p.active`, `s.quantity`, `pp.price_cents`, category-by-variant), then hides HTTP 500 as an empty result. Align search/EAN/SKU queries with current catalog, pricing, inventory and category schemas. Barcode text must support exact and partial EAN lookup.