Commit Graph

87 Commits

  • add fast mode toggle (#13212)
    - add a local Fast mode setting in codex-core (similar to how model id
    is currently stored on disk locally)
    - send `service_tier=priority` on requests when Fast is enabled
    - add `/fast` in the TUI and persist it locally
    - feature flag
  • Add realtime audio device picker (#12850)
    ## Summary
    - add a dedicated /audio picker for realtime microphone and speaker
    selection
    - persist realtime audio choices and prompt to restart only local audio
    when voice is live
    - add snapshot coverage for the new picker surfaces
    
    ## Validation
    - cargo test -p codex-tui
    - cargo insta accept
    - just fix -p codex-tui
    - just fmt
  • Display pending child-thread approvals in TUI (#12767)
    Summary
    - propagate approval policy from parent to spawned agents and drop the
    Never override so sub-agents respect the caller’s request
    - refresh the pending-approval list whenever events arrive or the active
    thread changes and surface the list above the composer for inactive
    threads
    - add widgets, helpers, and tests covering the new pending-thread
    approval UI state
    
    ![Uploading Screenshot 2026-02-25 at 11.02.18.png…]()
  • voice transcription (#3381)
    Adds voice transcription on press-and-hold of spacebar.
    
    
    https://github.com/user-attachments/assets/85039314-26f3-46d1-a83b-8c4a4a1ecc21
    
    ---------
    
    Co-authored-by: Codex <199175422+chatgpt-codex-connector[bot]@users.noreply.github.com>
    Co-authored-by: David Zbarsky <zbarsky@openai.com>
  • tweaked /clear to support clear + new chat, also fix minor bug for macos terminal (#12520)
    # /clear feature! 
    
    Use /clear to start a new chat with Codex on a clean terminal!
  • feat(tui) /clear (#12444)
    # /clear feature! 
    
    /clear will clear your terminal while preserving the context/state of
    the thread.
  • feat(tui): syntax highlighting via syntect with theme picker (#11447)
    ## Summary
    
    Adds syntax highlighting to the TUI for fenced code blocks in markdown
    responses and file diffs, plus a `/theme` command with live preview and
    persistent theme selection. Uses syntect (~250 grammars, 32 bundled
    themes, ~1 MB binary cost) — the same engine behind `bat`, `delta`, and
    `xi-editor`. Includes guardrails for large inputs, graceful fallback to
    plain text, and SSH-aware clipboard integration for the `/copy` command.
    
    <img width="1554" height="1014" alt="image"
    src="https://github.com/user-attachments/assets/38737a79-8717-4715-b857-94cf1ba59b85"
    />
    
    <img width="2354" height="1374" alt="image"
    src="https://github.com/user-attachments/assets/25d30a00-c487-4af8-9cb6-63b0695a4be7"
    />
    
    ## Problem
    
    Code blocks in the TUI (markdown responses and file diffs) render
    without syntax highlighting, making it hard to scan code at a glance.
    Users also have no way to pick a color theme that matches their terminal
    aesthetic.
    
    ## Mental model
    
    The highlighting system has three layers:
    
    1. **Syntax engine** (`render::highlight`) -- a thin wrapper around
    syntect + two-face. It owns a process-global `SyntaxSet` (~250 grammars)
    and a `RwLock<Theme>` that can be swapped at runtime. All public entry
    points accept `(code, lang)` and return ratatui `Span`/`Line` vectors or
    `None` when the language is unrecognized or the input exceeds safety
    guardrails.
    
    2. **Rendering consumers** -- `markdown_render` feeds fenced code blocks
    through the engine; `diff_render` highlights Add/Delete content as a
    whole file and Update hunks per-hunk (preserving parser state across
    hunk lines). Both callers fall back to plain unstyled text when the
    engine returns `None`.
    
    3. **Theme lifecycle** -- at startup the config's `tui.theme` is
    resolved to a syntect `Theme` via `set_theme_override`. At runtime the
    `/theme` picker calls `set_syntax_theme` to swap themes live; on cancel
    it restores the snapshot taken at open. On confirm it persists `[tui]
    theme = "..."` to config.toml.
    
    ## Non-goals
    
    - Inline diff highlighting (word-level change detection within a line).
    - Semantic / LSP-backed highlighting.
    - Theme authoring tooling; users supply standard `.tmTheme` files.
    
    ## Tradeoffs
    
    | Decision | Upside | Downside |
    | ------------------------------------------------ |
    ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
    |
    -----------------------------------------------------------------------------------------------------------------------
    |
    | syntect over tree-sitter / arborium | ~1 MB binary increase for ~250
    grammars + 32 themes; battle-tested crate powering widely-used tools
    (`bat`, `delta`, `xi-editor`). tree-sitter would add ~12 MB for 20-30
    languages or ~35 MB for full coverage. | Regex-based; less structurally
    accurate than tree-sitter for some languages (e.g. language injections
    like JS-in-HTML). |
    | Global `RwLock<Theme>` | Enables live `/theme` preview without
    threading Theme through every call site | Lock contention risk
    (mitigated: reads vastly outnumber writes, single UI thread) |
    | Skip background / italic / underline from themes | Terminal BG
    preserved, avoids ugly rendering on some themes | Themes that rely on
    these properties lose fidelity |
    | Guardrails: 512 KB / 10k lines | Prevents pathological stalls on huge
    diffs or pastes | Very large files render without color |
    
    ## Architecture
    
    ```
    config.toml  ─[tui.theme]─>  set_theme_override()  ─>  THEME (RwLock)
                                                                  │
                      ┌───────────────────────────────────────────┘
                      │
      markdown_render ─── highlight_code_to_lines(code, lang) ─> Vec<Line>
      diff_render     ─── highlight_code_to_styled_spans(code, lang) ─> Option<Vec<Vec<Span>>>
                      │
                      │   (None ⇒ plain text fallback)
                      │
      /theme picker   ─── set_syntax_theme(theme)    // live preview swap
                      ─── current_syntax_theme()      // snapshot for cancel
                      ─── resolve_theme_by_name(name) // lookup by kebab-case
    ```
    
    Key files:
    
    - `tui/src/render/highlight.rs` -- engine, theme management, guardrails
    - `tui/src/diff_render.rs` -- syntax-aware diff line wrapping
    - `tui/src/theme_picker.rs` -- `/theme` command builder
    - `tui/src/bottom_pane/list_selection_view.rs` -- side content panel,
    callbacks
    - `core/src/config/types.rs` -- `Tui::theme` field
    - `core/src/config/edit.rs` -- `syntax_theme_edit()` helper
    
    ## Observability
    
    - `tracing::warn` when a configured theme name cannot be resolved.
    - `Config::startup_warnings` surfaces the same message as a TUI banner.
    - `tracing::error` when persisting theme selection fails.
    
    ## Tests
    
    - Unit tests in `highlight.rs`: language coverage, fallback behavior,
    CRLF stripping, style conversion, guardrail enforcement, theme name
    mapping exhaustiveness.
    - Unit tests in `diff_render.rs`: snapshot gallery at multiple terminal
    sizes (80x24, 94x35, 120x40), syntax-highlighted wrapping, large-diff
    guardrail, rename-to-different-extension highlighting, parser state
    preservation across hunk lines.
    - Unit tests in `theme_picker.rs`: preview rendering (wide + narrow),
    dim overlay on deletions, subtitle truncation, cancel-restore, fallback
    for unavailable configured theme.
    - Unit tests in `list_selection_view.rs`: side layout geometry, stacked
    fallback, buffer clearing, cancel/selection-changed callbacks.
    - Integration test in `lib.rs`: theme warning uses the final
    (post-resume) config.
    
    ## Cargo Deny: Unmaintained Dependency Exceptions
    
    This PR adds two `cargo deny` advisory exceptions for transitive
    dependencies pulled in by `syntect v5.3.0`:
    
    | Advisory | Crate | Status |
    |----------|-------|--------|
    | RUSTSEC-2024-0320 | `yaml-rust` | Unmaintained (maintainer
    unreachable) |
    | RUSTSEC-2025-0141 | `bincode` | Unmaintained (development ceased;
    v1.3.3 considered complete) |
    
    **Why this is safe in our usage:**
    
    - Neither advisory describes a known security vulnerability. Both are
    "unmaintained" notices only.
    - `bincode` is used by syntect to deserialize pre-compiled syntax sets.
    Again, these are **static vendored artifacts** baked into the binary at
    build time. No user-supplied bincode data is ever deserialized. - Attack
    surface is zero for both crates; exploitation would require a
    supply-chain compromise of our own build artifacts.
    - These exceptions can be removed when syntect migrates to `yaml-rust2`
    and drops `bincode`, or when alternative crates are available upstream.
  • chore: remove codex-core public protocol/shell re-exports (#12432)
    ## Why
    
    `codex-rs/core/src/lib.rs` re-exported a broad set of types and modules
    from `codex-protocol` and `codex-shell-command`. That made it easy for
    workspace crates to import those APIs through `codex-core`, which in
    turn hides dependency edges and makes it harder to reduce compile-time
    coupling over time.
    
    This change removes those public re-exports so call sites must import
    from the source crates directly. Even when a crate still depends on
    `codex-core` today, this makes dependency boundaries explicit and
    unblocks future work to drop `codex-core` dependencies where possible.
    
    ## What Changed
    
    - Removed public re-exports from `codex-rs/core/src/lib.rs` for:
    - `codex_protocol::protocol` and related protocol/model types (including
    `InitialHistory`)
      - `codex_protocol::config_types` (`protocol_config_types`)
    - `codex_shell_command::{bash, is_dangerous_command, is_safe_command,
    parse_command, powershell}`
    - Migrated workspace Rust call sites to import directly from:
      - `codex_protocol::protocol`
      - `codex_protocol::config_types`
      - `codex_protocol::models`
      - `codex_shell_command`
    - Added explicit `Cargo.toml` dependencies (`codex-protocol` /
    `codex-shell-command`) in crates that now import those crates directly.
    - Kept `codex-core` internal modules compiling by using `pub(crate)`
    aliases in `core/src/lib.rs` (internal-only, not part of the public
    API).
    - Updated the two utility crates that can already drop a `codex-core`
    dependency edge entirely:
      - `codex-utils-approval-presets`
      - `codex-utils-cli`
    
    ## Verification
    
    - `cargo test -p codex-utils-approval-presets`
    - `cargo test -p codex-utils-cli`
    - `cargo check --workspace --all-targets`
    - `just clippy`
  • Improve Plan mode reasoning selection flow (#12303)
    Addresses https://github.com/openai/codex/issues/11013
    
    ## Summary
    - add a Plan implementation path in the TUI that lets users choose
    reasoning before switching to Default mode and implementing
    - add Plan-mode reasoning scope handling (Plan-only override vs
    all-modes default), including config/schema/docs plumbing for
    `plan_mode_reasoning_effort`
    - remove the hardcoded Plan preset medium default and make the reasoning
    popup reflect the active Plan override as `(current)`
    - split the collaboration-mode switch notification UI hint into #12307
    to keep this diff focused
    
    If I have `plan_mode_reasoning_effort = "medium"` set in my
    `config.toml`:
    <img width="699" height="127" alt="Screenshot 2026-02-20 at 6 59 37 PM"
    src="https://github.com/user-attachments/assets/b33abf04-6b7a-49ed-b2e9-d24b99795369"
    />
    
    If I don't have `plan_mode_reasoning_effort` set in my `config.toml`:
    <img width="704" height="129" alt="Screenshot 2026-02-20 at 7 01 51 PM"
    src="https://github.com/user-attachments/assets/88a086d4-d2f1-49c7-8be4-f6f0c0fa1b8d"
    />
    
    ## Codex author
    `codex resume 019c78a2-726b-7fe3-adac-3fa4523dcc2a`
  • add(feedback): over-refusal / safety check (#11948)
    Add new feedback option for "Over-refusal / safety check"
  • sandbox NUX metrics update (#11667)
    just updating metrics to match the NUX tweaks we made this week.
  • [apps] Add is_enabled to app info. (#11417)
    - [x] Add is_enabled to app info and the response of `app/list`.
    - [x] Update TUI to have Enable/Disable button on the app detail page.
  • add a slash command to grant sandbox read access to inaccessible directories (#11512)
    There is an edge case where a directory is not readable by the sandbox.
    In practice, we've seen very little of it, but it can happen so this
    slash command unlocks users when it does.
    
    Future idea is to make this a tool that the agent knows about so it can
    be more integrated.
  • Promote Windows Sandbox (#11341)
    1. Move Windows Sandbox NUX to right after trust directory screen
    2. Don't offer read-only as an option in Sandbox NUX.
    Elevated/Legacy/Quit
    3. Don't allow new untrusted directories. It's trust or quit
    4. move experimental sandbox features to `[windows]
    sandbox="elevated|unelevatd"`
    5. Copy tweaks = elevated -> default, non-elevated -> non-admin
  • feat: split codex-common into smaller utils crates (#11422)
    We are removing feature-gated shared crates from the `codex-rs`
    workspace. `codex-common` grouped several unrelated utilities behind
    `[features]`, which made dependency boundaries harder to reason about
    and worked against the ongoing effort to eliminate feature flags from
    workspace crates.
    
    Splitting these utilities into dedicated crates under `utils/` aligns
    this area with existing workspace structure and keeps each dependency
    explicit at the crate boundary.
    
    ## What changed
    
    - Removed `codex-rs/common` (`codex-common`) from workspace members and
    workspace dependencies.
    - Added six new utility crates under `codex-rs/utils/`:
      - `codex-utils-cli`
      - `codex-utils-elapsed`
      - `codex-utils-sandbox-summary`
      - `codex-utils-approval-presets`
      - `codex-utils-oss`
      - `codex-utils-fuzzy-match`
    - Migrated the corresponding modules out of `codex-common` into these
    crates (with tests), and added matching `BUILD.bazel` targets.
    - Updated direct consumers to use the new crates instead of
    `codex-common`:
      - `codex-rs/cli`
      - `codex-rs/tui`
      - `codex-rs/exec`
      - `codex-rs/app-server`
      - `codex-rs/mcp-server`
      - `codex-rs/chatgpt`
      - `codex-rs/cloud-tasks`
    - Updated workspace lockfile entries to reflect the new dependency graph
    and removal of `codex-common`.
  • tui: queue non-pending rollback trims in app-event order (#11373)
    ## Summary
    
    This PR fixes TUI transcript-sync behavior for
    `EventMsg::ThreadRolledBack` and makes rollback application order
    deterministic.
    
    Previously, rollback handling depended on `pending_rollback`:
    
    - if `pending_rollback` was set (local backtrack), TUI trimmed correctly
    - otherwise, replayed/external rollbacks were either ignored or could be
    applied at the wrong time relative to queued transcript inserts
    
    This change keeps the local backtrack path intact and routes non-pending
    rollbacks through the app event queue so rollback trims are applied in
    FIFO order with transcript cell inserts.
    
    ## What changed
    
    - Added/used `trim_transcript_cells_drop_last_n_user_turns(...)` for
    rollback-by-`num_turns` semantics.
    - Renamed rollback app event:
    - `AppEvent::ApplyReplayedThreadRollback` ->
    `AppEvent::ApplyThreadRollback`
    - Replay path (`ChatWidget`) now emits `ApplyThreadRollback`.
    - Live non-pending rollback path (`App::handle_backtrack_event`) now
    emits `ApplyThreadRollback` instead of trimming immediately.
    - App-level event handler applies `ApplyThreadRollback` after queued
    `InsertHistoryCell` events and schedules redraw only when a trim
    occurred.
    - When a trim occurs with an overlay open, TUI now syncs transcript
    overlay committed cells, clamps backtrack preview selection, and clears
    stale `deferred_history_lines` so closed overlays do not re-append
    rolled-back lines.
    - Clarified inline comments around the `pending_rollback` branch so
    future readers can reason about why there are two paths.
    
    ## Why queueing matters
    
    During resume/replay, transcript cells are populated via queued
    `InsertHistoryCell` app events. If a rollback is applied immediately
    outside that queue, it can run against an incomplete transcript and
    under-trim. Queueing non-pending rollbacks ensures consistent ordering
    and correct final transcript state.
    
    ## Behavior by rollback source
    
    - `pending_rollback = Some(...)` (local backtrack requested by this
    TUI):
      - use `finish_pending_backtrack()` and the stored selection boundary
    - `pending_rollback = None` (replay/external/non-local rollback):
    - enqueue `AppEvent::ApplyThreadRollback { num_turns }` and trim in
    app-event order
    
    ## Tests
    
    Added/updated tests covering ordering and semantics:
    
    -
    `app_backtrack::tests::trim_drop_last_n_user_turns_applies_rollback_semantics`
    - `app_backtrack::tests::trim_drop_last_n_user_turns_allows_overflow`
    - `app::tests::replayed_initial_messages_apply_rollback_in_queue_order`
    -
    `app::tests::live_rollback_during_replay_is_applied_in_app_event_order`
    -
    `app::tests::queued_rollback_syncs_overlay_and_clears_deferred_history`
    - `chatwidget::tests::replayed_thread_rollback_emits_ordered_app_event`
    
    Validation run:
    
    - `just fmt`
    - `cargo test -p codex-tui`
  • [apps] Improve app installation flow. (#11249)
    - [x] Add buttons to start the installation flow and verify installation
    completes.
    - [x] Hard refresh apps list when the /apps view opens.
  • [apps] Improve app loading. (#10994)
    There are two concepts of apps that we load in the harness:
    
    - Directory apps, which is all the apps that the user can install.
    - Accessible apps, which is what the user actually installed and can be
    $ inserted and be used by the model. These are extracted from the tools
    that are loaded through the gateway MCP.
    
    Previously we wait for both sets of apps before returning the full apps
    list. Which causes many issues because accessible apps won't be
    available to the UI or the model if directory apps aren't loaded or
    failed to load.
    
    In this PR we are separating them so that accessible apps can be loaded
    separately and are instantly available to be shown in the UI and to be
    provided in model context. We also added an app-server event so that
    clients can subscribe to also get accessible apps without being blocked
    on the full app list.
    
    - [x] Separate accessible apps and directory apps loading.
    - [x] `app/list` request will also emit `app/list/updated` notifications
    that app-server clients can subscribe. Which allows clients to get
    accessible apps list to render in the $ menu without being blocked by
    directory apps.
    - [x] Cache both accessible and directory apps with 1 hour TTL to avoid
    reloading them when creating new threads.
    - [x] TUI improvements to redraw $ menu and /apps menu when app list is
    updated.
  • feat(tui): add /statusline command for interactive status line configuration (#10546)
    ## Summary
    - Adds a new `/statusline` command to configure TUI footer status line
    - Introduces reusable `MultiSelectPicker` component with keyboard
    navigation, optional ordering and toggle support
    - Implement status line setup modal that persist configuration to
    config.toml
    
      ## Status Line Items
      The following items can be displayed in the status line:
      - **Model**: Current model name (with optional reasoning level)
      - **Context**: Remaining/used context window percentage
      - **Rate Limits**: 5-day and weekly usage limits
      - **Git**: Current branch (with optimized lookups)
      - **Tokens**: Used tokens, input/output token counts
      - **Session**: Session ID (full or shortened prefix)
      - **Paths**: Current directory, project root
      - **Version**: Codex version
    
      ## Features
      - Live preview while configuring status line items
      - Fuzzy search filtering in the picker
      - Intelligent truncation when items don't fit
      - Items gracefully omit when data is unavailable
      - Configuration persists to `config.toml`
      - Validates and warns about invalid status line items
    
      ## Test plan
      - [x] Run `/statusline` and verify picker UI appears
      - [x] Toggle items on/off and verify live preview updates
      - [x] Confirm selection persists after restart
      - [x] Verify truncation behavior with many items selected
      - [x] Test git branch detection in and out of git repos
    
    ---------
    
    Co-authored-by: Josh McKinney <joshka@openai.com>
  • [connectors] Support connectors part 2 - slash command and tui (#9728)
    - [x] Support `/apps` slash command to browse the apps in tui.
    - [x] Support inserting apps to prompt using `$`.
    - [x] Lots of simplification/renaming from connectors to apps.
  • remove sandbox globals. (#9797)
    Threads sandbox updates through OverrideTurnContext for active turn
    Passes computed sandbox type into safety/exec
  • feat(tui) /personality (#9718)
    ## Summary
    Adds /personality selector in the TUI, which leverages the new core
    interface in #9644
    
    Notes:
    - We are doing some of our own state management for model_info loading
    here, but not sure if that's ideal. open to opinions on simpler
    approach, but would like to avoid blocking on a larger refactor
    - Right now, the `/personality` selector just hides when the model
    doesn't support it. we can update this behavior down the line
    
    ## Testing
    - [x] Tested locally
    - [x] Added snapshot tests
  • Use collaboration mode masks without mutating base settings (#9806)
    Keep an unmasked base collaboration mode and apply the active mask on
    demand. Simplify the TUI mask helpers and update tests/docs to match the
    mask contract.
  • TUI: prompt to implement plan and switch to Execute (#9712)
    ## Summary
    - Replace the plan‑implementation prompt with a standard selection
    popup.
    - “Yes” submits a user turn in Execute via a dedicated app event to
    preserve normal transcript behavior.
    - “No” simply dismisses the popup.
    
    <img width="977" height="433" alt="Screenshot 2026-01-22 at 2 00 54 PM"
    src="https://github.com/user-attachments/assets/91fad06f-7b7a-4cd8-9051-f28a19b750b2"
    />
    
    ## Changes
    - Add a plan‑implementation popup using `SelectionViewParams`.
    - Add `SubmitUserMessageWithMode` so “Yes” routes through
    `submit_user_message` (ensures user history + separator state).
    - Track `saw_plan_update_this_turn` so the prompt appears even when only
    `update_plan` is emitted.
    - Suppress the plan popup on replayed turns, when messages are queued,
    or when a rate‑limit prompt is pending.
    - Add `execute_mode` helper for collaboration modes.
    - Add tests for replay/queued/rate‑limit guards and plan update without
    final message.
    - Add snapshots for both the default and “No”‑selected popup states.
  • feat(tui) /permissions flow (#9561)
    ## Summary
    Adds the `/permissions` command, with a (usually) shorter set of
    permissions. `/approvals` still exists, for backwards compatibility.
    
    <img width="863" height="309" alt="Screenshot 2026-01-20 at 4 12 51 PM"
    src="https://github.com/user-attachments/assets/c49b5ba5-bc47-46dd-9067-e1a5670328fe"
    />
    
    
    ## Testing
    - [x] updated unit tests
    - [x] Tested locally
  • Add UI for skill enable/disable. (#9627)
    "/skill" will now allow you to enable/disable skills:
    <img width="658" height="199" alt="image"
    src="https://github.com/user-attachments/assets/bf8994c8-d6c1-462f-8bbb-f1ee9241caa4"
    />
  • Tui: use collaboration mode instead of model and effort (#9507)
    - Only use collaboration modes in the tui state to track model and
    effort.
    - No behavior change without the collaboration modes flag.
    - Change model and effort on /model, /collab (behind a flag), and
    shift+tab (behind flag)
  • feat: /fork the current session instead of opening session picker (#9385)
    Implemented /fork to fork the current session directly (no picker),
    handling it via a new ForkCurrentSession app event in both tui and tui2.
    Updated slash command descriptions/tooltips and adjusted the fork tests
    accordingly. Removed the unused in-session fork picker event.
  • feat: propagate approval request of unsubscribed threads (#9232)
    A thread can now be spawned by another thread. In order to process the
    approval requests of such sub-threads, we need to detect those event and
    show them in the TUI.
    
    This is a temporary solution while the UX is being figured out. This PR
    should be reverted once done
  • tui: double-press Ctrl+C/Ctrl+D to quit (#8936)
    ## Problem
    
    Codex’s TUI quit behavior has historically been easy to trigger
    accidentally and hard to reason
    about.
    
    - `Ctrl+C`/`Ctrl+D` could terminate the UI immediately, which is a
    common key to press while trying
      to dismiss a modal, cancel a command, or recover from a stuck state.
    - “Quit” and “shutdown” were not consistently separated, so some exit
    paths could bypass the
      shutdown/cleanup work that should run before the process terminates.
    
    This PR makes quitting both safer (harder to do by accident) and more
    uniform across quit
    gestures, while keeping the shutdown-first semantics explicit.
    
    ## Mental model
    
    After this change, the system treats quitting as a UI request that is
    coordinated by the app
    layer.
    
    - The UI requests exit via `AppEvent::Exit(ExitMode)`.
    - `ExitMode::ShutdownFirst` is the normal user path: the app triggers
    `Op::Shutdown`, continues
    rendering while shutdown runs, and only ends the UI loop once shutdown
    has completed.
    - `ExitMode::Immediate` exists as an escape hatch (and as the
    post-shutdown “now actually exit”
    signal); it bypasses cleanup and should not be the default for
    user-triggered quits.
    
    User-facing quit gestures are intentionally “two-step” for safety:
    
    - `Ctrl+C` and `Ctrl+D` no longer exit immediately.
    - The first press arms a 1-second window and shows a footer hint (“ctrl
    + <key> again to quit”).
    - Pressing the same key again within the window requests a
    shutdown-first quit; otherwise the
      hint expires and the next press starts a fresh window.
    
    Key routing remains modal-first:
    
    - A modal/popup gets first chance to consume `Ctrl+C`.
    - If a modal handles `Ctrl+C`, any armed quit shortcut is cleared so
    dismissing a modal cannot
      prime a subsequent `Ctrl+C` to quit.
    - `Ctrl+D` only participates in quitting when the composer is empty and
    no modal/popup is active.
    
    The design doc `docs/exit-confirmation-prompt-design.md` captures the
    intended routing and the
    invariants the UI should maintain.
    
    ## Non-goals
    
    - This does not attempt to redesign modal UX or make modals uniformly
    dismissible via `Ctrl+C`.
    It only ensures modals get priority and that quit arming does not leak
    across modal handling.
    - This does not introduce a persistent confirmation prompt/menu for
    quitting; the goal is to keep
      the exit gesture lightweight and consistent.
    - This does not change the semantics of core shutdown itself; it changes
    how the UI requests and
      sequences it.
    
    ## Tradeoffs
    
    - Quitting via `Ctrl+C`/`Ctrl+D` now requires a deliberate second
    keypress, which adds friction for
      users who relied on the old “instant quit” behavior.
    - The UI now maintains a small time-bounded state machine for the armed
    shortcut, which increases
      complexity and introduces timing-dependent behavior.
    
    This design was chosen over alternatives (a modal confirmation prompt or
    a long-lived “are you
    sure” state) because it provides an explicit safety barrier while
    keeping the flow fast and
    keyboard-native.
    
    ## Architecture
    
    - `ChatWidget` owns the quit-shortcut state machine and decides when a
    quit gesture is allowed
      (idle vs cancellable work, composer state, etc.).
    - `BottomPane` owns rendering and local input routing for modals/popups.
    It is responsible for
    consuming cancellation keys when a view is active and for
    showing/expiring the footer hint.
    - `App` owns shutdown sequencing: translating
    `AppEvent::Exit(ShutdownFirst)` into `Op::Shutdown`
      and only terminating the UI loop when exit is safe.
    
    This keeps “what should happen” decisions (quit vs interrupt vs ignore)
    in the chat/widget layer,
    while keeping “how it looks and which view gets the key” in the
    bottom-pane layer.
    
    ## Observability
    
    You can tell this is working by running the TUIs and exercising the quit
    gestures:
    
    - While idle: pressing `Ctrl+C` (or `Ctrl+D` with an empty composer and
    no modal) shows a footer
    hint for ~1 second; pressing again within that window exits via
    shutdown-first.
    - While streaming/tools/review are active: `Ctrl+C` interrupts work
    rather than quitting.
    - With a modal/popup open: `Ctrl+C` dismisses/handles the modal (if it
    chooses to) and does not
    arm a quit shortcut; a subsequent quick `Ctrl+C` should not quit unless
    the user re-arms it.
    
    Failure modes are visible as:
    
    - Quits that happen immediately (no hint window) from `Ctrl+C`/`Ctrl+D`.
    - Quits that occur while a modal is open and consuming `Ctrl+C`.
    - UI termination before shutdown completes (cleanup skipped).
    
    ## Tests
    
    - Updated/added unit and snapshot coverage in `codex-tui` and
    `codex-tui2` to validate:
      - The quit hint appears and expires on the expected key.
    - Double-press within the window triggers a shutdown-first quit request.
    - Modal-first routing prevents quit bypass and clears any armed shortcut
    when a modal consumes
        `Ctrl+C`.
    
    These tests focus on the UI-level invariants and rendered output; they
    do not attempt to validate
    real terminal key-repeat timing or end-to-end process shutdown behavior.
    
    ---
    Screenshot:
    <img width="912" height="740" alt="Screenshot 2026-01-13 at 1 05 28 PM"
    src="https://github.com/user-attachments/assets/18f3d22e-2557-47f2-a369-ae7a9531f29f"
    />
  • fix: report an appropriate error in the TUI for malformed rules (#9011)
    The underlying issue is that when we encountered an error starting a
    conversation (any sort of error, though making `$CODEX_HOME/rules` a
    file rather than folder was the example in #8803), then we were writing
    the message to stderr, but this could be printed over by our UI
    framework so the user would not see it. In general, we disallow the use
    of `eprintln!()` in this part of the code for exactly this reason,
    though this was suppressed by an `#[allow(clippy::print_stderr)]`.
    
    This attempts to clean things up by changing `handle_event()` and
    `handle_tui_event()` to return a `Result<AppRunControl>` instead of a
    `Result<bool>`, which is a new type introduced in this PR (and depends
    on `ExitReason`, also a new type):
    
    ```rust
    #[derive(Debug)]
    pub(crate) enum AppRunControl {
        Continue,
        Exit(ExitReason),
    }
    
    #[derive(Debug, Clone)]
    pub enum ExitReason {
        UserRequested,
        Fatal(String),
    }
    ```
    
    This makes it possible to exit the primary control flow of the TUI with
    richer information. This PR adds `ExitReason` to the existing
    `AppExitInfo` struct and updates `handle_app_exit()` to print the error
    and exit code `1` in the event of `ExitReason::Fatal`.
    
    I tried to create an integration test for this, but it was a bit
    involved, so I published it as a separate PR:
    https://github.com/openai/codex/pull/9166. For this PR, please have
    faith in my manual testing!
    
    Fixes https://github.com/openai/codex/issues/8803.
    
    
    
    
    ---
    [//]: # (BEGIN SAPLING FOOTER)
    Stack created with [Sapling](https://sapling-scm.com). Best reviewed
    with [ReviewStack](https://reviewstack.dev/openai/codex/pull/9011).
    * #9166
    * __->__ #9011
  • Use thread rollback for Esc backtrack (#9140)
    - Swap Esc backtrack to roll back the current thread instead of forking
  • feat: wire fork to codex cli (#8994)
    ## Summary
    - add `codex fork` subcommand and `/fork` slash command mirroring resume
    - extend session picker to support fork/resume actions with dynamic
    labels in tui/tui2
    - wire fork selection flow through tui bootstraps and add fork-related
    tests
  • Elevated sandbox NUX (#8789)
    Elevated Sandbox NUX:
    
    * prompt for elevated sandbox setup when agent mode is selected (via
    /approvals or at startup)
    * prompt for degraded sandbox if elevated setup is declined or fails
    * introduce /elevate-sandbox command to upgrade from degraded
    experience.
  • feat: open prompt in configured external editor (#7606)
    Add `ctrl+g` shortcut to enable opening current prompt in configured
    editor (`$VISUAL` or `$EDITOR`).
    
    
    - Prompt is updated with editor's content upon editor close.
    - Paste placeholders are automatically expanded when opening the
    external editor, and are not "recompressed" on close
    - They could be preserved in the editor, but it would be hard to prevent
    the user from modifying the placeholder text directly, which would drop
    the mapping to the `pending_paste` value
    - Image placeholders stay as-is
    - `ctrl+g` explanation added to shortcuts menu, snapshot tests updated
    
    
    
    https://github.com/user-attachments/assets/4ee05c81-fa49-4e99-8b07-fc9eef0bbfce
  • feat: experimental menu (#8071)
    This will automatically render any `Stage::Beta` features.
    
    The change only gets applied to the *next session*. This started as a
    bug but actually this is a good thing to prevent out of distribution
    push
    
    <img width="986" height="288" alt="Screenshot 2025-12-15 at 15 38 35"
    src="https://github.com/user-attachments/assets/78b7a71d-0e43-4828-a118-91c5237909c7"
    />
    
    
    <img width="509" height="109" alt="Screenshot 2025-12-15 at 17 35 44"
    src="https://github.com/user-attachments/assets/6933de52-9b66-4abf-b58b-a5f26d5747e2"
    />
  • Make migration screen dynamic (#7896)
    # External (non-OpenAI) Pull Request Requirements
    
    Before opening this Pull Request, please read the dedicated
    "Contributing" markdown file or your PR may be closed:
    https://github.com/openai/codex/blob/main/docs/contributing.md
    
    If your PR conforms to our contribution guidelines, replace this text
    with a detailed and high quality description of your changes.
    
    Include a link to a bug report or enhancement request.
  • Enhance model picker (#7709)
    # External (non-OpenAI) Pull Request Requirements
    
    Before opening this Pull Request, please read the dedicated
    "Contributing" markdown file or your PR may be closed:
    https://github.com/openai/codex/blob/main/docs/contributing.md
    
    If your PR conforms to our contribution guidelines, replace this text
    with a detailed and high quality description of your changes.
    
    Include a link to a bug report or enhancement request.
  • Migrate model preset (#7542)
    - Introduce `openai_models` in `/core`
    - Move `PRESETS` under it
    - Move `ModelPreset`, `ModelUpgrade`, `ReasoningEffortPreset`,
    `ReasoningEffortPreset`, and `ReasoningEffortPreset` to `protocol`
    - Introduce `Op::ListModels` and `EventMsg::AvailableModels`
    
    Next steps:
    - migrate `app-server` and `tui` to use the introduced Operation
  • add slash resume (#7302)
    `codex resume` isn't that discoverable. Adding it to the slash commands
    can help
  • feat: tweak windows sandbox strings (#6875)
    New strings:
    1. Approval mode picker just says "Select Approval Mode"
    1. Updated "Auto" to "Agent"
    1. When you select "Agent", you get "Agent mode on Windows uses an
    experimental sandbox to limit network and filesystem access. [Learn
    more]"
    1. Updated world-writable warning to "The Windows sandbox cannot protect
    writes to folders that are writable by Everyone. Consider removing write
    access for Everyone from the following folders: {folders}"
    
    ---------
    
    Co-authored-by: iceweasel-oai <iceweasel@openai.com>
  • Prompt to turn on windows sandbox when auto mode selected. (#6618)
    - stop prompting users to install WSL 
    - prompt users to turn on Windows sandbox when auto mode requested.
    
    <img width="1660" height="195" alt="Screenshot 2025-11-17 110612"
    src="https://github.com/user-attachments/assets/c67fc239-a227-417e-94bb-599a8ed8f11e"
    />
    <img width="1684" height="168" alt="Screenshot 2025-11-17 110637"
    src="https://github.com/user-attachments/assets/d18c3370-830d-4971-8746-04757ae2f709"
    />
    <img width="1655" height="293" alt="Screenshot 2025-11-17 110719"
    src="https://github.com/user-attachments/assets/d21f6ce9-c23e-4842-baf6-8938b77c16db"
    />
  • background rate limits fetch (#6789)
    fetching rate limits every minute asynchronously
  • NUX for gpt5.1 (#6561)
    - Introducing a screen to inform users of model changes. 
    - Config name is being passed to be able to reuse this component in the
    future for future models
  • Add opt-out for rate limit model nudge (#6433)
    ## Summary
    - add a `hide_rate_limit_model_nudge` notice flag plus config edit
    plumbing so the rate limit reminder preference is persisted and
    documented
    - extend the chat widget prompt with a "never show again" option, and
    wire new app events so selecting it hides future nudges immediately and
    writes the config
    - add unit coverage and refresh the snapshot for the three-option prompt
    
    ## Testing
    - `just fmt`
    - `just fix -p codex-tui`
    - `just fix -p codex-core`
    - `cargo test -p codex-tui`
    - `cargo test -p codex-core` *(fails at
    `exec::tests::kill_child_process_group_kills_grandchildren_on_timeout`:
    grandchild process still alive)*
    
    ------
    [Codex
    Task](https://chatgpt.com/codex/tasks/task_i_6910d7f407748321b2661fc355416994)
  • more world-writable warning improvements (#6389)
    3 improvements:
    1. show up to 3 actual paths that are world-writable
    2. do the scan/warning for Read-Only mode too, because it also applies
    there
    3. remove the "Cancel" option since it doesn't always apply (like on
    startup)
  • Windows Sandbox: Show Everyone-writable directory warning (#6283)
    Show a warning when Auto Sandbox mode becomes enabled, if we detect
    Everyone-writable directories, since they cannot be protected by the
    current implementation of the Sandbox.
    
    This PR also includes changes to how we detect Everyone-writable to be
    *much* faster
  • feat(tui): clarify Windows auto mode requirements (#5568)
    ## Summary
    - Coerce Windows `workspace-write` configs back to read-only, surface
    the forced downgrade in the approvals popup,
      and funnel users toward WSL or Full Access.
    - Add WSL installation instructions to the Auto preset on Windows while
    keeping the preset available for other
      platforms.
    - Skip the trust-on-first-run prompt on native Windows so new folders
    remain read-only without additional
      confirmation.
    - Expose a structured sandbox policy resolution from config to flag
    Windows downgrades and adjust tests (core,
    exec, TUI) to reflect the new behavior; provide a Windows-only approvals
    snapshot.
    
      ## Testing
      - cargo fmt
    - cargo test -p codex-core
    config::tests::add_dir_override_extends_workspace_writable_roots
    - cargo test -p codex-exec
    suite::resume::exec_resume_preserves_cli_configuration_overrides
    - cargo test -p codex-tui
    chatwidget::tests::approvals_selection_popup_snapshot
    - cargo test -p codex-tui
    approvals_popup_includes_wsl_note_for_auto_mode
      - cargo test -p codex-tui windows_skips_trust_prompt
      - just fix -p codex-core
      - just fix -p codex-tui