Codex Inner IDE v0.2.0 Preview

First public preview of a local Python IDE companion for Codex Desktop on macOS.

Highlights

Native NSPanel + WKWebView window with Monaco, file tree, tabs, Output and Problems.
Versioned atomic saves with external-change conflict handling and workspace boundary checks.
Python interpreter discovery, .venv creation, Run/Stop and traceback navigation.
Python execution through the bundled Codex App Server with workspaceWrite, one writable root and network disabled.
Add to chat fills the active Codex task composer without sending.
More details opens ChatGPT Quick Chat and fills the focused composer without sending.
Codex Sidepanel IDE entry is injected below Files for validated compatibility profiles.

Apple Silicon Mac running macOS 14 or newer.
Codex Desktop 26.715.72028 with bundled codex-cli 0.145.0-alpha.30 is the current validated profile.

The downloadable app is ad-hoc signed and is not notarized.
Codex integration relies on private, version-bound CDP and UI selectors and can break after a Codex update.
The IDE does not modify the Codex app bundle, ASAR or signature.
No LSP, debugger, notebook, Git UI, interactive terminal, Side Chat, Review or AI autocomplete.

React/Vitest tests.
Swift unit and App Server sandbox integration tests.
Release build and strict bundle signature verification.
Live Quick Chat handoff verification with insert/read-back/clear and no message submission.