[Frontend] useTrade pagination: detail views miss trades beyond first page

[ajitpratap0]

Follow-up from PR #223 review.

useTrade(id) fetches the full trade list via apiClient.getTrades() (default limit=50) and filters client-side. Trades beyond the first page are invisible to detail views.

Options:

1. Add a GET /api/v1/trades/:id backend endpoint (cleanest)
2. Increase the limit to a higher value when fetching for single-trade lookup
3. Share the query cache with useTrades so already-fetched pages are searched first

Also related: useTrades and useTrade use different query keys (['trades', limit, offset] vs ['trades', id]), so two hooks mounted simultaneously fire two full-list fetches. Consider sharing the base query or using queryClient.getQueryData to check the cache before fetching.