Show HN: Replay your Claude Code logs to count parallel session collisions (github.com)

A new plugin for Claude Code, dubbed "bulkhead," has been released in version 0.2.0, designed to manage multiple simultaneous sessions on a single machine, preventing them from interfering with one another. It employs a series of hooks that monitor shell commands in real-time, blocking actions that could disrupt another session's processes—such as memory overloads, conflicting port usage, or accidental file edits. Notable features include the ability to replay past sessions to analyze potential collisions and guard against them, ensuring a smoother development experience when managing multiple environments. The significance of this update lies in its ability to enhance productivity for developers working with concurrent Claude Code sessions, particularly across different git worktrees. By preventing collisions and resource contention, it minimizes crashes and system slowdowns, which are common pitfalls in multi-session workflows. The plugin's architecture maintains zero external dependencies, making it lightweight and accessible. With specific guards tailored to various risks, such as memory overflow and command conflicts, bulkhead effectively implements a "compartmentalization" strategy, akin to bulkhead compartments in a ship, ensuring that one session's issues do not sink the entire workflow.