fix: add report type support to collection REST endpoints

- Add 'report' case to add_assets_to_collection endpoint
- Add 'report' case to remove_assets_from_collection endpoint
- Update error response mappings to include ReportFile type

apps/api/server/src/routes/rest/routes/collections/add_assets_to_collection.rs

@@ -66,6 +66,7 @@ pub async fn add_assets_to_collection(
         let asset_type = match asset.type_.to_lowercase().as_str() {
             "dashboard" => Some(AssetType::DashboardFile),
             "metric" => Some(AssetType::MetricFile),
+            "report" => Some(AssetType::ReportFile),
             _ => None,
         };
         
@@ -81,6 +82,7 @@ pub async fn add_assets_to_collection(
                 let type_str = match asset_type {
                     AssetType::DashboardFile => "dashboard",
                     AssetType::MetricFile => "metric",
+                    AssetType::ReportFile => "report",
                     _ => "unknown",
                 };
                 

apps/api/server/src/routes/rest/routes/collections/remove_assets_from_collection.rs

@@ -67,6 +67,7 @@ pub async fn remove_assets_from_collection(
         match asset.type_.to_lowercase().as_str() {
             "dashboard" => Some(AssetToRemove::Dashboard(asset.id)),
             "metric" => Some(AssetToRemove::Metric(asset.id)),
+            "report" => Some(AssetToRemove::Report(asset.id)),
             _ => None,
         }
     }).collect();
@@ -77,6 +78,7 @@ pub async fn remove_assets_from_collection(
                 let type_str = match asset_type {
                     AssetType::DashboardFile => "dashboard",
                     AssetType::MetricFile => "metric",
+                    AssetType::ReportFile => "report",
                     _ => "unknown",
                 };