[ECO Bounty] ioTexScan Recent Search History Not Persisting/Saving in Search

Description

When interacting with the global search bar at the top of the IoTeX Scan explorer:

• Expected: Recent searches (addresses, transaction IDs, or block numbers) should be saved and displayed as suggestions when the search bar is tapped or typed into again

• Actual: No recent search history is displayed; the search bar appears empty or shows placeholder text only each time it is accessed

• The keyboard shortcut button (⌘K) is visible next to the search bar, suggesting there should be search functionality/history available

Steps to Reproduce

1. Open a web browser on mobile device

2. Navigate to iotexscan.io

3. Tap on the search bar (labeled "Search by Address / Txn I...")

4. Enter a valid Address or Transaction ID

5. Submit the search and view results

6. Return to the main page or tap the search bar again

7. ➡️ Recent searches do not appear below or inside the search field

Expected Behavior

• Recent searches (addresses, TX hashes) should be cached locally or linked to the user's session

• When tapping the search bar, a dropdown of recent searches should appear for quick re-access

• Users should be able to clear search history if desired

• Recent searches should persist across page reloads (if using local storage)

Actual Behavior

• Search bar always appears empty with only placeholder text

• No recent search dropdown is displayed

• Users must manually re-type addresses or TX IDs each time

• No visual indication of search history functionality being present

Suggested Fix

• Implement localStorage or sessionStorage to cache recent searches on the client side

• Add a dropdown UI below the search bar showing the last 5-10 recent searches

• Include a "Clear History" option for user control

• Ensure recent searches persist across page navigation within the same session

Wallet Address:

io1tkw393kejmxwnd454twc6020sxcyvh5dxqmren

Device & Environment:

-Operating system: Android 13

-Device model: Redmi Note 10 Pro