build: prepare Next.js standalone output and Payload Postgres adapter for Coolify deployment

src/payload.config.ts

@@ -1,4 +1,5 @@
 import { sqliteAdapter } from '@payloadcms/db-sqlite'
+import { postgresAdapter } from '@payloadcms/db-postgres'
 import { mcpPlugin } from '@payloadcms/plugin-mcp'
 import { seoPlugin } from '@payloadcms/plugin-seo'
 import { ipalKit, panelSmtpAdapter } from '@intecion/ipal-kit'
@@ -33,11 +34,9 @@ export default buildConfig({
   typescript: {
     outputFile: path.resolve(dirname, 'payload-types.ts'),
   },
-  db: sqliteAdapter({
-    client: {
-      url: process.env.DATABASE_URI || '',
-    },
-  }),
+  db: process.env.DATABASE_URI?.startsWith('postgres')
+    ? postgresAdapter({ pool: { connectionString: process.env.DATABASE_URI }, push: false })
+    : sqliteAdapter({ client: { url: process.env.DATABASE_URI || '' } }),
   sharp,
   localization: {
     locales: i18n.locales.map(l => l.code),