feat: add persistence utilities for recent searches using localStorage

Author: JhaSourav07

hooks/useRecentSearches.ts

@@ -7,6 +7,30 @@ export const MAX_SEARCHES = 5;
 
 type State = { searches: string[]; mounted: boolean };
 
+function loadFromStorage(): string[] {
+  let saved: string[] = [];
+  try {
+    const stored = localStorage.getItem(STORAGE_KEY);
+    if (stored) saved = JSON.parse(stored) as string[];
+  } catch {
+    // ignore malformed storage
+  }
+  return saved;
+}
+
+function writeStorage(searches: string[] | null): void {
+  try {
+    if (searches === null) {
+      localStorage.removeItem(STORAGE_KEY);
+      return;
+    }
+
+    localStorage.setItem(STORAGE_KEY, JSON.stringify(searches));
+  } catch {
+    // ignore storage write failures
+  }
+}
+
 export function useRecentSearches() {
   // Always start with [] and mounted:false on both server and client so the
   // initial render matches (SSR-safe). A single setState in the mount effect