fix(price): remove baseprice detection, use directional price match

baseprice > price was wrongly treated as "quantity discount" — it's just
GoMag's promotional price. Now: price_gomag <= pret_roa is always OK,
only flag when GoMag charges MORE than ROA. Reset cached price_match
at startup for re-evaluation. Fix dashboard dot color for mismatches.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

api/app/routers/sync.py

@@ -46,6 +46,9 @@ async def backfill_price_match():
         from ..database import get_sqlite
         db = await get_sqlite()
         try:
+            # Reset all cached price_match to re-evaluate with current logic
+            await db.execute("UPDATE orders SET price_match = NULL WHERE price_match IS NOT NULL")
+            await db.commit()
             cursor = await db.execute("""
                 SELECT order_number FROM orders
                 WHERE status IN ('IMPORTED', 'ALREADY_IMPORTED')
@@ -465,9 +468,6 @@ async def order_detail(order_number: str):
                 item["price_match"] = pi.get("match")
                 if pi.get("kit"):
                     item["kit"] = True
-                if pi.get("quantity_discount"):
-                    item["quantity_discount"] = True
-                    item["baseprice"] = pi.get("baseprice")
         order_price_check = price_data.get("summary", {})
         # Cache price_match in SQLite if changed
         if order_price_check.get("oracle_available") is not False: