feat: kod sablony cenovky pre hromadny import

- sablona cenovky ma kod (napr. SUPER_CENA), nastavuje sa v hlavicke editora
  cenoviek; kontrola jedinecnosti, ulozi sa v layers_config (bez zmeny DB)
- import CSV/JSON/XML: novy stlpec Cenovka (kod sablony), automaticky
  rozpoznany (cenovka/badge/sablona); pouzije sa kod alebo nazov sablony,
  bez ohladu na velke pismena a diakritiku
- nahlad importu ukazuje priradenu sablonu, neznamy kod nahlasi upozornenie
- spolocne nacitanie sablon z DB (badgeFromRow) pre editor aj stranku

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/app/page.tsx

@@ -5,7 +5,7 @@ import { NewsletterCampaign, NewsletterModule, ProductItem, BadgeTemplate } from
 import { DEFAULT_CAMPAIGN, SUPABASE_ASSETS_BASE, ensureValidityBar } from '@/lib/defaultCampaign';
 import { renderEmailHtml, renderSingleModuleHtml, getCampaignValidity } from '@/lib/emailRenderer';
 import { supabase } from '@/lib/supabase';
-import { DEFAULT_BADGE_TEMPLATES } from '@/lib/badgeUtils';
+import { DEFAULT_BADGE_TEMPLATES, BadgeRow, badgeFromRow } from '@/lib/badgeUtils';
 import { getBrevoCampaignUrl } from '@/lib/brevo';
 import { TopBar } from '@/components/editor/TopBar';
 import { ConfigPanel } from '@/components/editor/ConfigPanel';
@@ -56,19 +56,7 @@ export default function Home() {
           .order('created_at', { ascending: false });
 
         if (data && !error && data.length > 0) {
-          loaded = data.map((d: any) => {
-            const isObj = d.layers_config && !Array.isArray(d.layers_config);
-            return {
-              id: d.id,
-              name: d.name,
-              svgRaw: d.svg_raw || '',
-              layersConfig: isObj ? (d.layers_config.layers || []) : (d.layers_config || []),
-              width: isObj ? (d.layers_config.width || 110) : 110,
-              align: isObj ? (d.layers_config.align || 'center') : 'center',
-              paddingTop: isObj ? (d.layers_config.paddingTop ?? 4) : 4,
-              paddingBottom: isObj ? (d.layers_config.paddingBottom ?? 4) : 4
-            };
-          });
+          loaded = (data as BadgeRow[]).map(badgeFromRow);
         }
       } catch (e) {
         console.warn('Error fetching badges in page:', e);
@@ -1006,6 +994,7 @@ export default function Home() {
         isOpen={isImportOpen}
         onClose={() => setIsImportOpen(false)}
         onImportProducts={handleImportProducts}
+        availableBadges={availableBadges}
       />
 
       {/* Modál Editora cenoviek (SVG -> PNG) */}