Codex CLI 0.156.0-alpha.8 changelog - what changed

[removed] Dropped the exclude_slash_tmp configuration key.
[changed] TUI chat turn handling now uses a dedicated turn runtime path for managing in-progress turns.
[changed] Exec-server noise relay messaging uses explicit message framing; the older generated relay protobuf path is gone.

Under the hood

Added the headers crate for HTTP header handling.
Internal agent/session and tool-trace payload shapes were tightened (close/interrupt/register agent args, MCP tool-call error typing, filesystem sandbox context, and related summary types), including renames and cleanups around hooks, permissions snapshots, and process identity on macOS.
Client event stream naming was adjusted (message-chunk style events in place of the prior ack-oriented variant).
Workspace lockfile and version metadata updated for 0.156.0-alpha.8.

If your config still sets exclude_slash_tmp, remove it; that key is no longer recognized.

[removed] Dropped the exclude_slash_tmp configuration key.
[changed] TUI chat turn handling now uses a dedicated turn runtime path for managing in-progress turns.
[changed] Exec-server noise relay messaging uses explicit message framing; the older generated relay protobuf path is gone.

Added the headers crate for HTTP header handling.
Internal agent/session and tool-trace payload shapes were tightened (close/interrupt/register agent args, MCP tool-call error typing, filesystem sandbox context, and related summary types), including renames and cleanups around hooks, permissions snapshots, and process identity on macOS.
Client event stream naming was adjusted (message-chunk style events in place of the prior ack-oriented variant).
Workspace lockfile and version metadata updated for 0.156.0-alpha.8.

If your config still sets exclude_slash_tmp, remove it; that key is no longer recognized.