We identified a race condition in the user creation flow. When two users attempt to connect at the same time, both can end up receiving the same User PDA. This leads to conflicts, unexpected errors during account creation, and potential data corruption.

Steps to Reproduce:

• Start two user connection requests in parallel.
• Both requests try to derive and create the same User PDA.
• The transaction succeeds for one user but fails (or creates inconsistencies) for the other.