In-memory Git for AI agents, slow filesystems (EFS/NFS), and test harnesses. Bash-like exec() dispatcher, no subprocess, isolated per-instance volumes, .gitignore-aware loading, explicit flush.
In-memory file system for Effect v4. Great for mocking, tests, simulating files and keeping files in memory. Duh.
Letta Code mod package that adds an agent-callable MemFS memory search tool.