Relocate misplaced frontend files

frontend/src/utils/queryUtils.ts

@@ -0,0 +1,27 @@
+/**
+ * Shared query utilities used by pages and hooks.
+ */
+
+import type { HistoryQuery } from "../types/history";
+
+/**
+ * Compare two history query objects for semantic equality.
+ *
+ * @param a - First query object.
+ * @param b - Second query object.
+ * @returns True when every query field has the same value.
+ */
+export function areHistoryQueriesEqual(
+  a: HistoryQuery,
+  b: HistoryQuery,
+): boolean {
+  return (
+    a.range === b.range &&
+    a.origin === b.origin &&
+    a.jail === b.jail &&
+    a.ip === b.ip &&
+    a.source === b.source &&
+    a.page === b.page &&
+    a.page_size === b.page_size
+  );
+}