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

backend/src/index.ts

@@ -20,6 +20,7 @@ import emailsRoutes from './routes/emails.js';
 import paymentOptionsRoutes from './routes/payment-options.js';
 import dashboardRoutes from './routes/dashboard.js';
 import siteSettingsRoutes from './routes/site-settings.js';
+import legalPagesRoutes from './routes/legal-pages.js';
 import emailService from './lib/email.js';
 
 const app = new Hono();
@@ -1714,6 +1715,7 @@ app.route('/api/emails', emailsRoutes);
 app.route('/api/payment-options', paymentOptionsRoutes);
 app.route('/api/dashboard', dashboardRoutes);
 app.route('/api/site-settings', siteSettingsRoutes);
+app.route('/api/legal-pages', legalPagesRoutes);
 
 // 404 handler
 app.notFound((c) => {