fix: route the AI usage and lab merge error toasts through the error-id helper

src/components/admin/ai-usage-section.tsx

@@ -18,6 +18,8 @@ import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 import { Gauge } from "lucide-react";
 import { toast } from "sonner";
 
+import { showErrorToast } from "@/lib/errors/error-toast";
+
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
@@ -120,10 +122,11 @@ function AiUsageForm({ bounds }: { bounds: AiUsageBounds }) {
       toast.success(t("common.saved"));
     },
     onError: (err) => {
-      toast.error(
+      showErrorToast(
         err instanceof Error && err.message
           ? err.message
           : t("admin.settingsSaveError"),
+        { cause: err },
       );
     },
   });

src/components/labs/biomarker-merge-sheet.tsx

@@ -13,7 +13,7 @@
  */
 import { useMemo, useState } from "react";
 import { useMutation, useQueryClient } from "@tanstack/react-query";
-import { toast } from "sonner";
+import { showErrorToast } from "@/lib/errors/error-toast";
 import { Loader2 } from "lucide-react";
 
 import { toastWrittenOutcome } from "@/components/outcome/outcome-toast";
@@ -83,7 +83,7 @@ export function BiomarkerMergeSheet({
       reset();
       onOpenChange(false);
     },
-    onError: () => toast.error(t("labs.merge.error")),
+    onError: (err) => showErrorToast(t("labs.merge.error"), { cause: err }),
   });
 
   const toggle = (id: string, checked: boolean) => {