Summary

• adds quick TP/SL price-move buttons for +1%, +2%, and +5% targets
• lets users edit TP/SL by target price, P/L percent, or P/L amount
• keeps the three TP/SL input modes synchronized for both long and short order directions

Validation

• npm run build
• Playwright local smoke test on http://127.0.0.1:5174/trade/ETH-USD with the country overlay hidden only for local testing:
  • desktop and 390px mobile layout snapshots for expanded TP/SL controls
  • Size=1, Price=1000, Profit (%)=10 updates TP Price to 1002 and Profit (ETH) to 0.002
  • Profit (ETH)=0.004 updates Profit (%) to 20 and TP Price to 1004

Closes #17.