Document PostgreSQL support in README

README.md

@@ -14,7 +14,7 @@ Features a premium animated homepage (typewriter hero, floating orbs, scroll cou
 | pnpm            | 12.11.2      | Pinned via `packageManager`             |
 | npm             | >= 11.x      | Supported alternative                   |
 | yarn            | >= 4.x       | Supported alternative                   |
-| MySQL / MariaDB | 8.0+ / 10.6+ | Shared with the emulator                |
+| MySQL / MariaDB / PostgreSQL | 8.0+ / 10.6+ / 15+ | Supported databases |
 | Docker          | 24+          | Optional — for containerized deployment |
 | Valkey          | 8.x+         | Optional — caching, rate limiting, SSE  |
 
@@ -74,7 +74,11 @@ cp .env.example .env
 Edit `.env` with at minimum:
 
 ```dotenv
+# MySQL / MariaDB:
 DATABASE_URL=mysql://user:[email protected]:3306/epicnext_cms
+# Or PostgreSQL:
+# DATABASE_URL=postgres://user:[email protected]:5432/epicnext_cms
+
 AUTH_SECRET=<random 32+ character string>
 HOTEL_NAME=YourHotel
 APP_URL=http://localhost:3002