Add PostgreSQL support via pg and node-postgres drizzle adapter

.env.example

@@ -8,6 +8,7 @@
 # directly (drizzle-kit, scripts). Keep both in step and keep them well below
 # MariaDB's `max_connections` (151 by default) or the emulator and any second
 # CMS instance get "Too many connections". README §performance: pool size 25.
+# DATABASE_URL supports both MySQL/MariaDB ("mysql://...") and PostgreSQL ("postgres://...").
 DATABASE_URL="mysql://user:password@localhost:3306/dbname?charset=utf8mb4&connection_limit=25&connect_timeout=5"
 DATABASE_POOL_SIZE=25
 DATABASE_IDLE_TIMEOUT_MS=60000

drizzle.config.ts

@@ -6,12 +6,15 @@ import { defineConfig } from "drizzle-kit";
 // This DB is shared with the Arcturus emulator — NEVER run `drizzle-kit migrate`
 // or `push` against it. CMS DDL stays in drizzle/migrations/*.sql applied by
 // `pnpm db:migrate`. Use `pnpm db:generate` only for draft SQL under drizzle/drafts/.
+const dbUrl = process.env.DATABASE_URL ?? "";
+const isPostgres = dbUrl.startsWith("postgres://") || dbUrl.startsWith("postgresql://");
+
 export default defineConfig({
-	dialect: "mysql",
+	dialect: isPostgres ? "postgresql" : "mysql",
 	schema: "./src/db/schema.ts",
 	out: "./drizzle/drafts",
 	dbCredentials: {
-		url: process.env.DATABASE_URL ?? "",
+		url: dbUrl,
 	},
 	strict: true,
 	verbose: true,

package.json

@@ -79,6 +79,7 @@
 		"next-auth": "5.0.0-beta.32",
 		"next-intl": "4.14.9",
 		"otplib": "13.5.0",
+		"pg": "^8.23.1",
 		"pino": "10.4.0",
 		"react": "19.3.1",
 		"react-dom": "19.3.1",
@@ -100,6 +101,7 @@
 		"@tailwindcss/postcss": "4.3.3",
 		"@tailwindcss/typography": "0.5.20",
 		"@types/node": "26.6.5",
+		"@types/pg": "^8.23.1",
 		"@types/react": "19.3.0",
 		"@types/react-dom": "19.3.0",
 		"@vitest/coverage-v8": "5.0.5",