removing rbac cos its not needed at all

migration/src/lib.rs

@@ -10,6 +10,8 @@ mod m20260517_000005_audio_albums;
 mod m20260517_000006_audio_tracks;
 mod m20260517_000007_audio_tags;
 mod m20260517_000008_audio_track_tags;
+mod m20260517_000009_simple_constraints;
+mod m20260517_000010_drop_user_roles;
 
 pub struct Migrator;
 
@@ -26,6 +28,8 @@ impl MigratorTrait for Migrator {
             Box::new(m20260517_000006_audio_tracks::Migration),
             Box::new(m20260517_000007_audio_tags::Migration),
             Box::new(m20260517_000008_audio_track_tags::Migration),
+            Box::new(m20260517_000009_simple_constraints::Migration),
+            Box::new(m20260517_000010_drop_user_roles::Migration),
             // inject-above (do not remove this comment)
         ]
     }

migration/src/m20260517_000009_simple_constraints.rs

@@ -0,0 +1,60 @@
+use sea_orm_migration::{prelude::*, sea_orm::ConnectionTrait};
+
+#[derive(DeriveMigrationName)]
+pub struct Migration;
+
+#[derive(DeriveIden)]
+enum AudioTrackTags {
+    Table,
+    TagId,
+}
+
+#[async_trait::async_trait]
+impl MigrationTrait for Migration {
+    async fn up(&self, m: &SchemaManager) -> Result<(), DbErr> {
+        if matches!(
+            m.get_database_backend(),
+            sea_orm_migration::sea_orm::DatabaseBackend::Postgres
+        ) {
+            m.get_connection()
+                .execute_unprepared(
+                    "ALTER TABLE users \
+                     ADD CONSTRAINT chk_users_theme \
+                     CHECK (theme IN ('light', 'dark'))",
+                )
+                .await?;
+        }
+
+        m.create_index(
+            Index::create()
+                .name("idx-audio_track_tags-tag_id")
+                .table(AudioTrackTags::Table)
+                .col(AudioTrackTags::TagId)
+                .to_owned(),
+        )
+        .await?;
+
+        Ok(())
+    }
+
+    async fn down(&self, m: &SchemaManager) -> Result<(), DbErr> {
+        m.drop_index(
+            Index::drop()
+                .name("idx-audio_track_tags-tag_id")
+                .table(AudioTrackTags::Table)
+                .to_owned(),
+        )
+        .await?;
+
+        if matches!(
+            m.get_database_backend(),
+            sea_orm_migration::sea_orm::DatabaseBackend::Postgres
+        ) {
+            m.get_connection()
+                .execute_unprepared("ALTER TABLE users DROP CONSTRAINT chk_users_theme")
+                .await?;
+        }
+
+        Ok(())
+    }
+}

migration/src/m20260517_000010_drop_user_roles.rs

@@ -0,0 +1,28 @@
+use sea_orm_migration::prelude::*;
+
+#[derive(DeriveMigrationName)]
+pub struct Migration;
+
+#[derive(DeriveIden)]
+enum UserRoles {
+    Table,
+}
+
+#[async_trait::async_trait]
+impl MigrationTrait for Migration {
+    async fn up(&self, m: &SchemaManager) -> Result<(), DbErr> {
+        m.drop_table(
+            Table::drop()
+                .table(UserRoles::Table)
+                .if_exists()
+                .cascade()
+                .to_owned(),
+        )
+        .await?;
+        Ok(())
+    }
+
+    async fn down(&self, _m: &SchemaManager) -> Result<(), DbErr> {
+        Ok(())
+    }
+}