Manual Entry for Offline Trades and Sales

Currently, sales or trades completed offline (in-person, direct messaging, or external platforms) cannot be tracked within CardNexus. This leaves my personal collection, account transaction history, and collection valuation out of sync with my real-world inventory unless I manually delete or add cards one by one.

A feature to log Offline Trades and Offline Sales directly to a user's account with the following behavior:

• Offline Sales:

  • Deducts the sold card(s) from the user's active collection.

  • Records the sale, price, and date in the user’s Personal Transaction History.

  • Excludes these manual entries from CardNexus's public market data and main sales boards to ensure platform sales verification remains accurate.

• Offline Trades:

  • Removes the offered card(s) from the user's collection.

  • Adds the received card(s) to the user's collection.

  • Logs the swap details (cards exchanged, estimated trade value, date) into a dedicated Personal Trade History.

Manually removing cards from the collection and re-adding new ones without any linked transaction log. This works for inventory count, but completely loses historical cost basis, trade records, and profit/loss tracking.

Additional context Allowing private history tracking without contaminating public platform pricing data gives users a complete personal portfolio manager while protecting the integrity of CardNexus market analytics.