Implemented serverside pagination;

Enabled searchspace file mgmt panel to use serverside pagination;

surfsense_web/lib/pagination.ts

@@ -0,0 +1,34 @@
+// Helper to normalize list responses from the API
+// Supports shapes: Array<T>, { items: T[]; total: number }, and tuple [T[], total]
+export type ListResponse<T> = {
+  items: T[];
+  total: number;
+};
+
+export function normalizeListResponse<T>(payload: any): ListResponse<T> {
+  try {
+    // Case 1: already in desired shape
+    if (payload && Array.isArray(payload.items)) {
+      const total = typeof payload.total === "number" ? payload.total : payload.items.length;
+      return { items: payload.items as T[], total };
+    }
+
+    // Case 2: tuple [items, total]
+    if (Array.isArray(payload) && payload.length === 2 && Array.isArray(payload[0])) {
+      const items = (payload[0] ?? []) as T[];
+      const rawTotal = payload[1];
+      const total = typeof rawTotal === "number" ? rawTotal : items.length;
+      return { items, total };
+    }
+
+    // Case 3: plain array
+    if (Array.isArray(payload)) {
+      return { items: payload as T[], total: (payload as T[]).length };
+    }
+  } catch (e) {
+    // fallthrough to default
+  }
+
+  return { items: [], total: 0 };
+}
+