Show clear generation diagnostics when basis run saves zero variants

app/admin_web.py

@@ -1908,6 +1908,13 @@ async def basis_item_generate_submit(
     runs = list(run_result.scalars().all())
     variants = list(variant_result.scalars().all())
     usage_metrics, family_stats = await _family_usage_stats(db, basis_item, variants)
+    status_message = (
+        f"Run #{run_id} failed to produce savable variants. "
+        f"Requested={generation_count}, Generated={len(generated)}, Saved={saved}. "
+        "Check model output/credentials and server logs."
+        if saved == 0
+        else f"Run #{run_id} finished. Requested={generation_count}, Generated={len(generated)}, Saved={saved}."
+    )
     body = _basis_item_workspace_body(
         basis_item,
         runs,
@@ -1915,7 +1922,8 @@ async def basis_item_generate_submit(
         usage_metrics,
         family_stats,
         filters,
-        success=f"Run #{run_id} finished. Saved {saved} variant(s).",
+        error=status_message if saved == 0 else None,
+        success=status_message if saved > 0 else None,
         target_level=target_level,
         ai_model=ai_model,
         generation_count=str(generation_count),