Self-hosted dashboard and admin auth (#4837)

Co-authored-by: kartik-mem0 <kartik.labhshetwar@mem0.ai>

server/dashboard/src/lib/error-message.ts

@@ -0,0 +1,20 @@
+import axios from "axios";
+
+export function getErrorMessage(
+  err: unknown,
+  fallback = "Something went wrong",
+): string {
+  if (axios.isAxiosError(err)) {
+    const detail = err.response?.data?.detail;
+    if (typeof detail === "string") return detail;
+    if (Array.isArray(detail) && detail.length > 0) {
+      const first = detail[0];
+      if (typeof first === "string") return first;
+      if (first?.msg) return String(first.msg);
+    }
+    if (err.message) return err.message;
+  }
+  if (err instanceof Error && err.message) return err.message;
+  if (typeof err === "string") return err;
+  return fallback;
+}