Added check for v3.0

src/utils/versionUtils.ts

@@ -43,10 +43,15 @@ async function checkVersionExists(repoId: string, version: string): Promise<bool
 
 /**
  * Determines the best available version for a dataset.
- * Prefers v2.1, falls back to v2.0, or throws an error if neither exists.
+ * Prefers v3.0, falls back to v2.1, then v2.0, or throws an error if none exist.
  */
 export async function getDatasetVersion(repoId: string): Promise<string> {
-  // Check for v2.1 first
+  // Check for v3.0 first
+  if (await checkVersionExists(repoId, "v3.0")) {
+    return "v3.0";
+  }
+  
+  // Check for v2.1
   if (await checkVersionExists(repoId, "v2.1")) {
     return "v2.1";
   }
@@ -56,10 +61,10 @@ export async function getDatasetVersion(repoId: string): Promise<string> {
     return "v2.0";
   }
   
-  // If neither v2.1 nor v2.0 exists, throw an error
+  // If none of the supported versions exist, throw an error
   throw new Error(
     `Dataset ${repoId} is not compatible with this visualizer. ` +
-    "This tool only works with dataset version 2.x (v2.1 or v2.0). " +
+    "This tool only works with dataset versions 3.0, 2.1, or 2.0. " +
     "Please use a compatible dataset version."
   );
 }