refactor: clean up album and auth handlers by removing unused structs and imports

libertas_infra/src/query_builder.rs

@@ -38,7 +38,7 @@ impl QueryBuilder<ListMediaOptions> for MediaQueryBuilder {
         mut query: SqlxQueryBuilder<'a, sqlx::Postgres>,
         options: &'a ListMediaOptions,
     ) -> CoreResult<SqlxQueryBuilder<'a, sqlx::Postgres>> {
-        if let Some(filter) = &options.filter {
+        if let Some(_filter) = &options.filter {
             // In the future, you would add logic here:
             // if let Some(mime) = &filter.mime_type {
             //     query.push(" AND mime_type = ");