Enhancement: withdrawal history only shows last 20 entries — add pagination or load-more

[henrypeters]

Category: Frontend - Enhancement
Priority: Low
Estimated Time: 1 hour

Description:
app/(app)/withdraw/page.tsx calls api.listWithdrawals(token, 20, signal) with a hard-coded limit of 20 and no UI to load more. A merchant with a longer cash-out history cannot audit older withdrawals from the dashboard. The API already accepts a limit parameter so the fix is purely UI-side.

// app/(app)/withdraw/page.tsx
api.listWithdrawals(token, 20, signal)  // older records not accessible

Tasks:

• Add a "Load more" button below the withdrawals list that fetches the next page
• Implement cursor/offset pagination in api.listWithdrawals() in lib/api.ts
• Show the total count if the backend provides it
• Add a test for the paginated load