project-context-memory
Bootstrap and maintain shared project memory on disk so multiple Codex threads can work on the same project without losing context. Use by default for substantial coding, debugging, planning, documentation, or project organization work inside a project workspace when continuity across threads matters. Also use when Codex should initialize project documentation in an empty or undocumented workspace, create a standard memory folder structure, record conversation summaries, update decisions and current state, or rebuild a conversation index that later threads can read.