Codex Session Image Scrubber

Purpose

Clean oversized Codex session logs by replacing embedded image/base64 payloads with small placeholders while keeping the surrounding conversation, tool calls, and text intact.

Use this when the user says a Codex chat/thread is heavy, slow, bloated, or contains pasted screenshots/images/base64 they want removed from history.

Workflow

1. Confirm the target thread/session.
   • Prefer a thread id if the user provides one.
   • If they provide a remembered phrase, locate the session with rg -l "<phrase>" ~/.codex/sessions ~/.codex/session_index.jsonl.
   • Do not edit the active file until you know which JSONL is the target.