Highlights

• New commands and controls: support /mcp in TUI (#2430) and a slash command /approvals to control approvals (#2474).
• Reasoning controls: change reasoning effort and model at runtime (#2435) /model; add “minimal” effort for GPT‑5 models (#2326).
• Auth improvements: show login options when not signed in with ChatGPT (#2440) and auto‑refresh ChatGPT auth token (#2484).
• UI/UX polish: Ghostty Ctrl‑b/Ctrl‑f fallback (#2427), Ctrl+H as backspace (#2412), cursor position tweak after tab completion (#2442), color/accessibility updates (#2401, #2421).
• Distribution/infra: zip archived binaries added to releases (#2438) and DotSlash entry for Windows x86_64 (#2361); upgraded to Rust 1.89 (#2465, #2467).

Full list of merged PRs

• #2352 tui: skip identical consecutive entries in local composer history
• #2355 fix: introduce codex-protocol crate
• #2326 Fix #2296 Add "minimal" reasoning effort for GPT 5 models
• #2357 Remove duplicated "Successfully logged in message"
• #2337 color the status letter in apply patch summary
• #2336 chore: remove duplicated lockfile
• #2361 fix: include an entry for windows-x86_64 in the generated DotSlash file
• #2245 Show progress indicator for /diff command
• #2314 replace /prompts with a rotating placeholder
• #2372 Added launch profile for attaching to a running codex CLI process
• #2373 Added MCP server command to enable authentication using ChatGPT
• #2388 fix: refactor login/src/server.rs so process_request() is a separate function
• #2365 fix: introduce EventMsg::TurnAborted
• #2360 remove mcp-server/src/mcp_protocol.rs and the code that depends on it
• #2401 fix: clean up styles & colors and define in styles.md
• #2411 chore(deps-dev): bump @types/node in /.github/actions/codex
• #2421 fix: stop using ANSI blue
• #2423 chore: move mcp-server/src/wire_format.rs to protocol/src/mcp_protocol.rs
• #2424 chore: add TS annotation to generated mcp-types
• #2428 consolidate reasoning enums into one
• #2431 Add an operation to override current task context
• #2425 protocol-ts
• #2432 Add cache tests for UserTurn
• #2412 Fix #2391 Add Ctrl+H as backspace keyboard shortcut
• #2405 chore(deps): bump anyhow in /codex-rs
• #2406 chore(deps): bump libc in /codex-rs
• #2389 chore: prefer returning Err to expect()
• #2393 fix: async-ify login flow
• #2404 chore(deps): bump clap in /codex-rs
• #2394 fix: change shutdown_flag from Arc<AtomicBool> to tokio::sync::Notify
• #2438 Release zip archived binaries
• #2395 fix: eliminate ServerOptions.login_timeout and use tokio::time::timeout()
• #2396 fix: make ShutdownHandle a private field of LoginServer
• #2398 fix: reduce references to Server in codex-login crate
• #2399 fix: remove shutdown_flag param to run_login_server()
• #2403 chore(deps): bump clap_complete in /codex-rs
• #2440 Show login options when not signed in with ChatGPT
• #2446 fix: exclude sysprompt etc from context left %
• #2430 [tui] Support /mcp command
• #2442 Fix #2429 Tweak the cursor position after tab completion
• #2457 fix: fix missing spacing in review decision response
• #2427 tui: support Ghostty Ctrl-b/Ctrl-f fallback
• #2407 chore(deps): bump actions/checkout from 4 to 5
• #2435 Support changing reasoning effort
• #2462 feat: move session ID bullet in /status
• #2464 docs: document writable_roots for sandbox_workspace_write
• #2466 fix: prefer cargo check to cargo build to save time and space
• #2465 chore: upgrade to Rust 1.89
• #2467 chore: Rust 1.89 promoted file locking to stdlib
• #2468 fix apply patch when only one file is rendered
• #2475 Fix: Sign in appear even if using other providers.
• #2460 Enable Dependabot updates for Rust toolchain
• #2476 Diff command
• #2487 Client headers
• #2484 Refresh ChatGPT auth token
• #2495 fix: prefer config var to env var
• #2474 Add a slash command to control permissions