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index.html

@@ -1915,6 +1915,7 @@
         statusEl.className = 'merge-status error';
         statusEl.textContent = `Error: ${err.message}`;
         console.error('Merge failed:', err);
+        throw err;  // re-throw so callers (e.g. restore) can handle
       }
     }
 
@@ -2106,11 +2107,25 @@
         // ── HF Auth setup ──
         await initHfAuth();
 
-        // Restore previously merged datasets
+        // Restore previously merged datasets (skip auth failures silently)
         try {
           const saved = JSON.parse(localStorage.getItem('mergedDatasets') || '[]');
+          const failed = [];
           for (const input of saved) {
-            await mergeDataset(input);
+            try {
+              await mergeDataset(input);
+            } catch (e) {
+              console.warn(`Skipping saved dataset "${input}":`, e.message);
+              failed.push(input);
+            }
+          }
+          if (failed.length > 0) {
+            // Remove datasets that can't be loaded (auth expired, deleted, etc.)
+            const remaining = mergedDatasets.map(d => d.input);
+            localStorage.setItem('mergedDatasets', JSON.stringify(remaining));
+            const statusEl = document.getElementById('merge-status');
+            statusEl.className = 'merge-status error';
+            statusEl.textContent = `${failed.length} saved dataset(s) skipped (sign in to load private datasets)`;
           }
         } catch (e) { console.warn('Failed to restore merged datasets:', e); }
 
@@ -2128,12 +2143,12 @@
     document.getElementById('btn-add-panel').addEventListener('click', () => addPanel());
     document.getElementById('btn-merge-dataset').addEventListener('click', () => {
       const input = document.getElementById('merge-dataset-input').value;
-      if (input.trim()) mergeDataset(input);
+      if (input.trim()) mergeDataset(input).catch(() => {});
     });
     document.getElementById('merge-dataset-input').addEventListener('keydown', (e) => {
       if (e.key === 'Enter') {
         const input = e.target.value;
-        if (input.trim()) mergeDataset(input);
+        if (input.trim()) mergeDataset(input).catch(() => {});
       }
     });