chore: typ pre renderStoresHtml

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

src/lib/emailRenderer.ts

@@ -714,7 +714,7 @@ function renderStackedImageRow(p: ProductItem, imgHtml: string, cellStyle: strin
 }
 
 // Štítky dostupnosti v predajniach (Potraviny / Supermarket / Tempo); prázdne, ak nie je zvolená žiadna
-function renderStoresHtml(p: any): string {
+function renderStoresHtml(p: { stores?: Partial<ProductItem["stores"]> }): string {
   const tag = (color: string, file: string, alt: string) =>
     `<tr><td align="right" style="line-height: 0;"><table role="presentation" cellspacing="0" cellpadding="0" border="0" align="right"><tr><td style="border: 0; background-color: ${color}; padding: 0; line-height: 0;"><img src="${SUPABASE_ASSETS_BASE}${file}" height="10" alt="${alt}" style="display: block; height: 10px; width: auto; border: 0;"></td></tr></table></td></tr>`;
   const rows = [