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/db/migrate.ts

@@ -1,7 +1,10 @@
+import 'dotenv/config';
 import { db } from './index.js';
 import { sql } from 'drizzle-orm';
 
 const dbType = process.env.DB_TYPE || 'sqlite';
+console.log(`Database type: ${dbType}`);
+console.log(`Database URL: ${process.env.DATABASE_URL?.substring(0, 30)}...`);
 
 async function migrate() {
   console.log('Running migrations...');
@@ -384,6 +387,23 @@ async function migrate() {
         updated_by TEXT REFERENCES users(id)
       )
     `);
+
+    // Legal pages table for admin-editable legal content
+    await (db as any).run(sql`
+      CREATE TABLE IF NOT EXISTS legal_pages (
+        id TEXT PRIMARY KEY,
+        slug TEXT NOT NULL UNIQUE,
+        title TEXT NOT NULL,
+        title_es TEXT,
+        content_text TEXT NOT NULL,
+        content_text_es TEXT,
+        content_markdown TEXT NOT NULL,
+        content_markdown_es TEXT,
+        updated_at TEXT NOT NULL,
+        updated_by TEXT REFERENCES users(id),
+        created_at TEXT NOT NULL
+      )
+    `);
   } else {
     // PostgreSQL migrations
     await (db as any).execute(sql`
@@ -716,6 +736,23 @@ async function migrate() {
         updated_by UUID REFERENCES users(id)
       )
     `);
+
+    // Legal pages table for admin-editable legal content
+    await (db as any).execute(sql`
+      CREATE TABLE IF NOT EXISTS legal_pages (
+        id UUID PRIMARY KEY,
+        slug VARCHAR(100) NOT NULL UNIQUE,
+        title VARCHAR(255) NOT NULL,
+        title_es VARCHAR(255),
+        content_text TEXT NOT NULL,
+        content_text_es TEXT,
+        content_markdown TEXT NOT NULL,
+        content_markdown_es TEXT,
+        updated_at TIMESTAMP NOT NULL,
+        updated_by UUID REFERENCES users(id),
+        created_at TIMESTAMP NOT NULL
+      )
+    `);
   }
 
   console.log('Migrations completed successfully!');