Show GN: Preserving Claude Code and Codex Sessions While Reducing Storage Usage

SessionTrim is a tool that reduces disk usage by removing tool execution results and system-only data from old Claude Code and Codex session files. It preserves human-readable records and token usage information.

The main targets for cleanup are as follows:

• Tool results such as command execution outputs
• Machine-only data included in sessions
• Large items not necessary for record preservation

Using the --apply option rewrites session files directly in their original location. Since there is no separate backup or undo feature, session files must be saved separately before applying.