Fix #4751: Implement optimistic concurrency control with event sequence#4752

Open

9chait9 wants to merge 6 commits intogoogle:mainfrom

9chait9:fix/issue-4751

Commits on Mar 8, 2026

Address review: Implement atomic optimistic concurrency control for session events and enforce SERIALIZABLE isolation for SQLite.
9chait9
committed
Address review: Add event_sequence to Session model for optimistic concurrency.
9chait9
committed