feat: impleneted the re-up opportunity for cytoken positions on unlock

[manny-uncharted]

closes: #237

Summary:

• Adds visibility into re-up potential for each receipt on the Unlock page.
• Displays:
  • Additional cyToken per 1 underlying (based on current lock price vs original lock price at mint).
  • Total additional cyToken per receipt (scaled by underlying locked in the receipt).
  • A grand total across all receipts.
• UI includes a toggle to show/hide re-up details and tooltips explaining the math.

Details:

• Source of truth:
  • Original lock price from receipt.tokenId.
  • Current lock price from $balancesStore.stats[token.name].lockPrice.
• Formulas:
  • addlPerUnderlying = max(0, currentLockPrice − tokenId)
  • totalsFlr = (balance × 10^18) / tokenId
  • addlTotal = (totalsFlr × addlPerUnderlying) / 10^18
• Reactivity:
  • All values recompute when $balancesStore.stats updates (prices refresh).