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/routes/contacts.ts

@@ -1,7 +1,7 @@
 import { Hono } from 'hono';
 import { zValidator } from '@hono/zod-validator';
 import { z } from 'zod';
-import { db, contacts, emailSubscribers } from '../db/index.js';
+import { db, dbGet, dbAll, contacts, emailSubscribers } from '../db/index.js';
 import { eq, desc } from 'drizzle-orm';
 import { requireAuth } from '../lib/auth.js';
 import { generateId, getNow } from '../lib/utils.js';
@@ -48,11 +48,12 @@ contactsRouter.post('/subscribe', zValidator('json', subscribeSchema), async (c)
   const data = c.req.valid('json');
   
   // Check if already subscribed
-  const existing = await (db as any)
-    .select()
-    .from(emailSubscribers)
-    .where(eq((emailSubscribers as any).email, data.email))
-    .get();
+  const existing = await dbGet<any>(
+    (db as any)
+      .select()
+      .from(emailSubscribers)
+      .where(eq((emailSubscribers as any).email, data.email))
+  );
   
   if (existing) {
     if (existing.status === 'unsubscribed') {
@@ -87,11 +88,9 @@ contactsRouter.post('/subscribe', zValidator('json', subscribeSchema), async (c)
 contactsRouter.post('/unsubscribe', zValidator('json', z.object({ email: z.string().email() })), async (c) => {
   const { email } = c.req.valid('json');
   
-  const existing = await (db as any)
-    .select()
-    .from(emailSubscribers)
-    .where(eq((emailSubscribers as any).email, email))
-    .get();
+  const existing = await dbGet<any>(
+    (db as any).select().from(emailSubscribers).where(eq((emailSubscribers as any).email, email))
+  );
   
   if (!existing) {
     return c.json({ error: 'Email not found' }, 404);
@@ -115,7 +114,7 @@ contactsRouter.get('/', requireAuth(['admin', 'organizer']), async (c) => {
     query = query.where(eq((contacts as any).status, status));
   }
   
-  const result = await query.orderBy(desc((contacts as any).createdAt)).all();
+  const result = await dbAll(query.orderBy(desc((contacts as any).createdAt)));
   
   return c.json({ contacts: result });
 });
@@ -124,11 +123,12 @@ contactsRouter.get('/', requireAuth(['admin', 'organizer']), async (c) => {
 contactsRouter.get('/:id', requireAuth(['admin', 'organizer']), async (c) => {
   const id = c.req.param('id');
   
-  const contact = await (db as any)
-    .select()
-    .from(contacts)
-    .where(eq((contacts as any).id, id))
-    .get();
+  const contact = await dbGet(
+    (db as any)
+      .select()
+      .from(contacts)
+      .where(eq((contacts as any).id, id))
+  );
   
   if (!contact) {
     return c.json({ error: 'Contact not found' }, 404);
@@ -142,11 +142,9 @@ contactsRouter.put('/:id', requireAuth(['admin', 'organizer']), zValidator('json
   const id = c.req.param('id');
   const data = c.req.valid('json');
   
-  const existing = await (db as any)
-    .select()
-    .from(contacts)
-    .where(eq((contacts as any).id, id))
-    .get();
+  const existing = await dbGet<any>(
+    (db as any).select().from(contacts).where(eq((contacts as any).id, id))
+  );
   
   if (!existing) {
     return c.json({ error: 'Contact not found' }, 404);
@@ -157,11 +155,9 @@ contactsRouter.put('/:id', requireAuth(['admin', 'organizer']), zValidator('json
     .set({ status: data.status })
     .where(eq((contacts as any).id, id));
   
-  const updated = await (db as any)
-    .select()
-    .from(contacts)
-    .where(eq((contacts as any).id, id))
-    .get();
+  const updated = await dbGet<any>(
+    (db as any).select().from(contacts).where(eq((contacts as any).id, id))
+  );
   
   return c.json({ contact: updated });
 });
@@ -185,7 +181,7 @@ contactsRouter.get('/subscribers/list', requireAuth(['admin', 'marketing']), asy
     query = query.where(eq((emailSubscribers as any).status, status));
   }
   
-  const result = await query.orderBy(desc((emailSubscribers as any).createdAt)).all();
+  const result = await dbAll(query.orderBy(desc((emailSubscribers as any).createdAt)));
   
   return c.json({ subscribers: result });
 });