feat: implement Trade Log tracking on Dashboard

[poketonova]

This PR implements a "Trade History Tracking" feature as researched from competitors like Collectr.

Changes:

• Portfolio Store: Added tradeLog state, logTrade action, and deleteTrade action. These are persisted to IndexedDB along with other user data.
• Dashboard View: Added a new "Trade Log" section to the user dashboard. Users can now:
  • Log manual trades (items given vs items received).
  • Track the value difference of their trades.
  • View a history of recent trades directly on their dashboard.
  • Delete past trade entries.

This feature aligns with Rarebox's mobile-first design by providing a lightweight way to track collection evolution without complex server-side requirements.

[vercel]

@poketonova is attempting to deploy a commit to the novaoc's projects Team on Vercel.

A member of the Team first needs to authorize it.