feat: Migrate Drizzle ORM to postgres.js, exclude test files from command loading, and adjust postgres dependency type.

src/lib/DrizzleClient.ts

@@ -1,13 +1,14 @@
-import { drizzle } from "drizzle-orm/bun-sql";
-import { SQL } from "bun";
+import { drizzle } from "drizzle-orm/postgres-js";
+import postgres from "postgres";
 import * as schema from "@db/schema";
 import { env } from "@lib/env";
 
 const connectionString = env.DATABASE_URL;
-export const postgres = new SQL(connectionString);
+// Disable prefetch as it is not supported by "transaction" method
+export const client = postgres(connectionString, { prepare: false });
 
-export const DrizzleClient = drizzle(postgres, { schema });
+export const DrizzleClient = drizzle(client, { schema });
 
 export const closeDatabase = async () => {
-    await postgres.close();
+    await client.end();
 };

src/lib/loaders/CommandLoader.ts

@@ -40,7 +40,7 @@ export class CommandLoader {
                     continue;
                 }
 
-                if (!file.name.endsWith('.ts') && !file.name.endsWith('.js')) continue;
+                if ((!file.name.endsWith('.ts') && !file.name.endsWith('.js')) || file.name.endsWith('.test.ts') || file.name.endsWith('.spec.ts')) continue;
 
                 await this.loadCommandFile(filePath, reload, result);
             }