Add PostgreSQL support with SQLite/Postgres database compatibility layer

- Add dbGet/dbAll helper functions for database-agnostic queries
- Add toDbBool/convertBooleansForDb for boolean type conversion
- Add toDbDate/getNow for timestamp type handling
- Add generateId that returns UUID for Postgres, nanoid for SQLite
- Update all routes to use compatibility helpers
- Add normalizeEvent to return clean number types from Postgres decimal
- Add formatPrice utility for consistent price display
- Add legal pages admin interface with RichTextEditor
- Update carousel images
- Add drizzle migration files for PostgreSQL

frontend/src/lib/utils.ts

@@ -0,0 +1,36 @@
+/**
+ * Format price - shows decimals only if needed
+ * Uses space as thousands separator (common in Paraguay)
+ * Examples:
+ *   45000 PYG -> "45 000 PYG" (no decimals)
+ *   41.44 PYG -> "41,44 PYG" (with decimals)
+ */
+export function formatPrice(price: number, currency: string = 'PYG'): string {
+  const hasDecimals = price % 1 !== 0;
+  
+  // Format the integer and decimal parts separately
+  const intPart = Math.floor(Math.abs(price));
+  const decPart = Math.abs(price) - intPart;
+  
+  // Format integer part with space as thousands separator
+  const intFormatted = intPart.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ' ');
+  
+  // Build final string
+  let result = price < 0 ? '-' : '';
+  result += intFormatted;
+  
+  // Add decimals only if present
+  if (hasDecimals) {
+    const decStr = decPart.toFixed(2).substring(2); // Get just the decimal digits
+    result += ',' + decStr;
+  }
+  
+  return `${result} ${currency}`;
+}
+
+/**
+ * Format currency amount (alias for formatPrice for backward compatibility)
+ */
+export function formatCurrency(amount: number, currency: string = 'PYG'): string {
+  return formatPrice(amount, currency);
+}