fix: remove procent_pret from quick-map modals, fix catalog price sync

Remove leftover procent_pret input fields and validation from dashboard,
logs and missing_skus quick-map modals (missed in 9e5901a). Fix GoMag
Products API returning dict-keyed products instead of array, which caused
catalog price sync to find 0 products with SKU.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

api/app/services/gomag_client.py

@@ -157,7 +157,12 @@ async def download_products(
 
             products = data.get("products", [])
             if isinstance(products, dict):
-                products = [products]
+                # GoMag returns products as {"1": {...}, "2": {...}} dict
+                first_val = next(iter(products.values()), None) if products else None
+                if isinstance(first_val, dict):
+                    products = list(products.values())
+                else:
+                    products = [products]
             if isinstance(products, list):
                 for p in products:
                     if isinstance(p, dict) and p.get("sku"):