refactor: demo.db migration structure

src/db.rs

@@ -23,12 +23,14 @@ impl Database {
 
         let pool = SqlitePoolOptions::new().connect_with(db_options).await?;
 
-        let migrator = if user.username == "demo" {
-            sqlx::migrate!("./migrations/demo.db/")
-        } else {
-            sqlx::migrate!("./migrations/each_user/")
+        sqlx::migrate!("./migrations/each_user/")
+            .run(&pool)
+            .await?;
+        if user.username == "demo" {
+            sqlx::query_file!("./migrations/demo.sql")
+                .execute(&pool)
+                .await?;
         };
-        migrator.run(&pool).await?;
 
         Ok(Self { pool })
     }