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450 Commits

  • Sync TUI thread settings through app server (#23507)
    Builds on #23502.
    
    ## Why
    
    #23502 adds the app-server `thread/settings/update` API and matching
    `thread/settings/updated` notification. The TUI already lets users
    change thread-scoped settings such as model, reasoning effort, service
    tier, approvals, permissions, personality, and collaboration mode, but
    those updates need to flow through the app server so embedded and
    connected clients observe the same thread state.
    
    This is a rework (simplification) of PR
    https://github.com/openai/codex/pull/22510. It has the same
    functionality, but the underlying `thread/settings/update` api is now
    simpler in that it no longer returns the effective settings as a
    response. Now, clients receive the effective settings only through the
    `thread/settings/updated` notification.
    
    ## What Changed
    
    This updates the TUI to send `thread/settings/update` whenever those
    thread-scoped settings change and to treat the RPC response as the
    authoritative acknowledgement. It also routes `thread/settings/updated`
    notifications back into cached session state and the visible chat widget
    so active and inactive threads stay in sync after app-server-originated
    changes.
    
    The implementation is kept to the TUI layer: settings conversion and
    merge logic live under `codex-rs/tui/src/app/thread_settings.rs`, with
    dispatch/routing hooks in the existing app and chat widget paths.
    
    ## Verification
    
    I manually tested using `codex app-server --listen unix://` and then
    launching two copies of the TUI that use the same local app server. I
    then resumed the same thread on both and verified that changes like plan
    mode, fast mode, model, reasoning effort, etc. are reflected "live" in
    the second client when modified in the first and vice versa.
  • [2 of 2] Start fresh TUI thread in background (#23176)
    ## Why
    
    After the terminal-probe work in #23175, fresh-session startup still
    waits for `thread/start` before the chat input can become usable. The
    chat widget already has the machinery to hold early submissions until a
    session is configured, so fresh `thread/start` does not need to stay on
    the input-ready hot path.
    
    Refs #16335.
    
    ## What
    
    This PR starts fresh app-server threads in a background task, reports
    completion through a startup app event, and attaches the primary session
    once `thread/start` returns. Resume and fork startup paths remain
    synchronous.
    
    ## Benchmark
    
    In the local pty startup benchmark, this PR's pre-optimization base
    branch, #23175, measured about 152ms median from launch to accepted chat
    input. The stacked result measured about 66ms median, for an approximate
    additional savings of 85-95ms. For broader context, the original `main`
    baseline before either startup optimization was about 250.5ms median. We
    also measured Codex 0.117.0 on the same machine at about 64.6ms median,
    so the stacked branch is back in the old-startup-time range.
    
    ## Stack
    
    1. [#23175: [1 of 2] Optimize TUI startup terminal
    probes](https://github.com/openai/codex/pull/23175) — base PR
    2. [#23176: [2 of 2] Start fresh TUI thread in
    background](https://github.com/openai/codex/pull/23176) — this PR
    
    ## Verification
    
    - `cargo test -p codex-tui`
  • Fix: TUI starting in wrong CWD (#23538)
    This fixes a regression wher codex could start in the wrong directory
    when a live local app-server socket was present. The issue was that
    implicit local socket reuse was being treated like an explicit remote
    workspace session, which dropped the invoking cwd unless --cd was
    passed.
    
    The change separates local socket transport from true remote workspace
    semantics.
    - Plain local startup keeps local cwd, trust, resume, picker, and
    config-refresh behavior.
    - Explicit --remote keeps the existing remote cwd behavior.
    - Added coverage for launch target selection and local-session
    filtering/cwd behavior.
    
    Steps to test:
    - Start a local app-server from a different directory than the repo you
    want to use.
      - Launch codex from a project/worktree without --cd.
    - Confirm the session starts in the invoking directory, not the
    app-server process directory.
    - Confirm explicit codex --remote ... still preserves existing remote
    behavior.
  • [2 of 4] tui: route app and skill enablement through app server (#22914)
    ## Why
    App and skill toggles are user config mutations too. When the TUI is
    attached to a remote app server, writing those toggles into the local
    `config.toml` makes the UI report success without updating the server
    that actually owns the session.
    
    This is **[2 of 4]** in a stacked series that moves TUI-owned config
    mutations onto app-server APIs.
    
    ## What changed
    - Routed app enable/disable persistence through app-server config batch
    writes.
    - Routed skill enable/disable persistence through `skills/config/write`.
    - Avoided refreshing local config from disk after these writes when the
    TUI is connected to a remote app server.
    
    ## Config keys affected
    - `apps.<app_id>.enabled`
    - `apps.<app_id>.disabled_reason`
    - `[[skills.config]]` entries keyed by `path`, with `enabled = false`
    used for persisted disables
    
    ## Suggested manual validation
    - Connect the TUI to a remote app server, disable an app, reconnect, and
    confirm the app remains disabled from remote config rather than local
    disk state.
    - Re-enable the same app and confirm both `apps.<app_id>.enabled` and
    `apps.<app_id>.disabled_reason` are cleared remotely.
    - Disable a skill in the manage-skills UI and confirm a remote
    `[[skills.config]]` disable entry appears.
    - Re-enable that skill and confirm the disable entry is removed and the
    effective enabled state updates without relying on local config reloads.
    
    ## Stack
    1. [#22913](https://github.com/openai/codex/pull/22913) `[1 of 4]`
    primary settings writes
    2. [#22914](https://github.com/openai/codex/pull/22914) `[2 of 4]` app
    and skill enablement
    3. [#22915](https://github.com/openai/codex/pull/22915) `[3 of 4]`
    feature and memory toggles
    4. [#22916](https://github.com/openai/codex/pull/22916) `[4 of 4]`
    startup and onboarding bookkeeping
  • Clarify resume hints for renamed threads (#23234)
    Addresses #23181
    
    ## Why
    Renamed threads can share names, so hints that suggest resuming directly
    by name are ambiguous. Issue #23181 asks for the picker hint to include
    the thread name and thread ID in parens so users can disambiguate
    safely.
    
    ## What
    - Adds a shared resume hint formatter for named threads: run `codex
    resume`, then select `<name> (<thread-id>)`.
    - Uses that hint for /rename confirmations, TUI session summaries, and
    CLI/TUI exit messages.
    - Keeps direct `codex resume <thread-id>` guidance for unnamed threads.
    
    ## Verification
    Manually verified that message after `/rename` and after `/exit` include
    session ID in parens.
    
    ---------
    
    Co-authored-by: Felipe Coury <felipe.coury@openai.com>
  • fix(tui): show shutdown feedback on exit (#23323)
    ## Why
    
    Ctrl+C can take a noticeable amount of time to finish when the TUI is
    waiting for the app-server thread shutdown path to complete. Before this
    change, the UI could look like it had not accepted the shutdown request
    because the composer and cursor remained in their normal interactive
    state during that wait.
    
    This PR makes the accepted shutdown visible immediately. It does not add
    an artificial sleep or change the shutdown timeout; it only draws one
    final feedback frame before continuing through the existing shutdown
    flow.
    
    ## What Changed
    
    - On `ExitMode::ShutdownFirst`, the TUI now renders shutdown feedback
    before awaiting the existing thread shutdown future.
    - The bottom pane disables composer input, which hides the cursor
    through the existing disabled-input cursor path.
    - The composer shows `Shutting down...` as the disabled input hint and
    suppresses footer content so the shutdown acknowledgement is not
    competing with shortcut/status text.
    - The logout path uses the same feedback path before shutting down.
    
    ## How to Test
    
    1. Start Codex from this branch.
    2. Press `Ctrl+C` to request shutdown.
    3. If shutdown takes long enough to observe, confirm the composer
    changes to `› Shutting down...`, the cursor disappears, and no footer
    hint is rendered below it.
    4. Regression check: repeat with text already typed in the composer and
    confirm the visible row still switches to `Shutting down...` while the
    draft remains preserved internally until the process exits.
    
    Targeted tests:
    
    - `cargo test -p codex-tui
    shutdown_in_progress_disables_input_and_uses_hint_without_footer`
    - `cargo test -p codex-tui bottom_pane::footer::tests::`
    
    ## Local Validation Note
    
    `cargo test -p codex-tui` still aborts in
    `app::tests::discard_side_thread_removes_agent_navigation_entry` with a
    stack overflow. That same test also failed when run alone locally, and
    the failure appears unrelated to this shutdown feedback path.
  • [1 of 2] Optimize TUI startup terminal probes (#23175)
    ## Why
    
    Codex TUI startup still feels slower than 0.117.0 after the app-server
    move in 0.118.0. A visible chunk of launch-to-input latency comes from
    serial terminal startup probes: cursor position, keyboard enhancement
    support, and default foreground/background color queries can each wait
    on terminal responses before the first usable frame.
    
    Refs #16335.
    
    ## What
    
    This PR batches the terminal startup probes into one bounded probe. It
    also reuses the probed cursor position and default colors during TUI
    setup, fast-paths the primary-device-attributes fallback as keyboard
    enhancement unsupported, and keeps lightweight startup timing logs for
    future tuning.
    
    The startup telemetry is intentionally left in production: it records
    phase timings for terminal probes and initial-frame scheduling so future
    startup regressions can be diagnosed from normal logs rather than
    re-adding one-off debug instrumentation.
    
    ## Benchmark
    
    In the local pty startup benchmark, the pre-optimization `main` baseline
    was about 250.5ms median from launch to accepted chat input. This
    probe-only branch measured about 152ms median, for an approximate
    savings of 95-100ms.
    
    ## Stack
    
    1. [#23175: [1 of 2] Optimize TUI startup terminal
    probes](https://github.com/openai/codex/pull/23175) — this PR
    2. [#23176: [2 of 2] Start fresh TUI thread in
    background](https://github.com/openai/codex/pull/23176) — layered on
    this PR
    
    ## Verification
    
    - `cargo test -p codex-tui`
  • core: set permission profiles from snapshots (#22920)
    ## Why
    
    #22891 moved the TUI turn-command path to pass `ActivePermissionProfile`
    instead of the full `PermissionProfile`, but the remaining
    config/session bridge still accepted the concrete `PermissionProfile`
    and active profile id as separate arguments. That shape made it too easy
    for future callers to update the concrete profile and active profile id
    out of sync.
    
    This PR makes the trusted session snapshot path pass one coherent value
    into `Permissions`, while keeping `requirements.toml` enforcement owned
    by the existing constrained permission state.
    
    ## What Changed
    
    - Added `PermissionProfileSnapshot` as the public snapshot value for
    trusted session/config synchronization.
    - Changed `Permissions::set_permission_profile_from_session_snapshot()`
    and `replace_permission_profile_from_session_snapshot()` to take a
    `PermissionProfileSnapshot`.
    - Updated the replacement path to derive its constrained
    `PermissionProfile` from the snapshot, so callers cannot pass a separate
    profile that disagrees with the snapshot.
    - Removed the internal tuple-style
    `PermissionProfileState::set_active_permission_profile()` mutation path.
    - Updated core session projection and TUI call sites to construct
    explicit legacy or active snapshots.
    - Documented the snapshot constructors so legacy use and id/profile
    mismatch hazards are called out at the API boundary.
    - Added a focused config test that verifies snapshot updates still
    respect existing permission constraints.
    
    ## How To Review
    
    1. Start with `codex-rs/core/src/config/resolved_permission_profile.rs`;
    `PermissionProfileSnapshot` is the public wrapper, while
    `ResolvedPermissionProfile` stays internal.
    2. Check `codex-rs/core/src/config/mod.rs` to confirm both
    session-snapshot setters validate through `PermissionProfileState` and
    no longer accept loose profile/id pairs.
    3. Skim `codex-rs/core/src/session/session.rs` for the session
    projection path; it now builds the snapshot before installing it.
    4. Skim the TUI changes as call-site migration from loose argument pairs
    to explicit snapshot construction.
    
    ## Verification
    
    - `cargo test -p codex-core
    permission_snapshot_setter_preserves_permission_constraints`
    - `cargo test -p codex-tui status_permissions_`
    - `cargo test -p codex-tui
    session_configured_preserves_profile_workspace_roots`
    - `just fix -p codex-core -p codex-tui`
  • tui: pass active permission profiles through app commands (#22891)
    ## Why
    
    This continues the permissions migration by keeping the TUI command
    boundary aligned with the app-server protocol direction from #22795:
    callers should select a permission profile by id instead of passing a
    concrete `PermissionProfile` value around as the turn configuration.
    
    `AppCommand` is internal to the TUI, but it is the path that eventually
    becomes `thread/turn/start`, so carrying concrete profile details there
    made it too easy for UI code to keep relying on the old whole-profile
    replacement model.
    
    ## What changed
    
    - `AppCommand::UserTurn` and `AppCommand::OverrideTurnContext` now carry
    `Option<ActivePermissionProfile>` instead of `PermissionProfile`.
    - Composer submissions copy the active permission profile id from the
    current session snapshot; legacy snapshots intentionally submit no
    active profile id.
    - Permission preset UI events now carry only the active built-in profile
    id. The app derives the concrete built-in `PermissionProfile` internally
    only when updating its local config/status snapshot.
    - Permission presets expose their built-in active profile id, and preset
    selection preserves that id in both the immediate turn override and the
    local TUI config snapshot.
    - Turn routing sends `TurnPermissionsOverride::ActiveProfile` when an
    active id is present, and only falls back to the legacy sandbox
    projection for the remaining runtime override path.
    
    ## How to review
    
    Start with `codex-rs/tui/src/app_command.rs` to verify the command shape
    no longer exposes `PermissionProfile`.
    
    Then read `codex-rs/tui/src/app/thread_routing.rs` to verify the
    app-server turn-start conversion: active ids go through as ids, while
    the legacy sandbox fallback is still constrained to the existing runtime
    override case.
    
    Finally, check `codex-rs/tui/src/chatwidget/permission_popups.rs`,
    `codex-rs/tui/src/app/event_dispatch.rs`,
    `codex-rs/tui/src/app/config_persistence.rs`, and
    `codex-rs/utils/approval-presets/src/lib.rs` to see how preset
    selections stay id-only across TUI events while the local display/config
    mirror still gets a concrete built-in profile.
    
    ## Verification
    
    Latest local verification after the id-only `AppEvent` cleanup:
    
    - `cargo check -p codex-tui --tests`
    - `cargo test -p codex-tui
    permissions_selection_sends_approvals_reviewer_in_override_turn_context`
    - `cargo test -p codex-tui update_feature_flags_enabling_guardian`
    - `cargo test -p codex-utils-approval-presets`
    - `just fmt`
    - `just fix -p codex-tui -p codex-utils-approval-presets`
    
    Earlier in the same PR, before the final event-shape cleanup:
    
    - `cargo test -p codex-tui turn_permissions_`
    - `cargo test -p codex-tui submission_`
    - `cargo test -p codex-tui
    session_configured_syncs_widget_config_permissions_and_cwd`
    - `RUST_MIN_STACK=16777216 cargo test -p codex-tui`
  • app-server: stop returning thread permission profiles (#22792)
    ## Why
    
    The app-server thread lifecycle API should no longer expose the full
    `PermissionProfile` value. After the permissions-profile migration,
    clients should round-trip only the active profile identity through
    `activePermissionProfile` and `permissions` when that identity is known.
    
    The full profile is server-side config. Treating a response-derived
    legacy sandbox projection as a new local profile can lose named-profile
    restrictions and accidentally widen permissions on the next turn. The
    legacy `sandbox` response field remains only as the
    compatibility/display fallback.
    
    ## What Changed
    
    - Removed `permissionProfile` from `ThreadStartResponse`,
    `ThreadResumeResponse`, and `ThreadForkResponse`.
    - Stopped populating that field in app-server thread start/resume/fork
    responses.
    - Updated embedded exec/TUI response mapping to derive display
    permission state from local config or the legacy sandbox fallback
    instead of a response profile value.
    - Added a TUI turn override shape that distinguishes preserving server
    permissions, selecting an active profile id, and sending a legacy
    sandbox for an explicit local override.
    - Preserved remote app-server permissions across turns by sending
    `permissions` only when an `activePermissionProfile` id is known, and
    otherwise sending no sandbox override unless the user selected a local
    override.
    - Kept embedded `thread/resume` hydration server-authored when
    `activePermissionProfile` is absent, which matches the live-thread
    attach path where the server ignores requested overrides.
    - Updated the app-server README to remove the obsolete lifecycle
    response `permissionProfile` reference. The remaining
    `permissionProfile` README references are request-side permission
    overrides.
    - Regenerated app-server JSON schema and TypeScript fixtures.
    - Kept the generated typed response enum exempt from
    `large_enum_variant`, matching the existing payload enum exemption after
    the lifecycle response variants shrank.
    
    ## How To Review
    
    Start with `codex-rs/app-server-protocol/src/protocol/v2/thread.rs` to
    confirm the response shape, then check the response construction in
    `codex-rs/app-server/src/request_processors`. The generated schema and
    TypeScript fixture changes are mechanical follow-through from the
    protocol removal.
    
    The TUI behavior is the delicate part: review
    `codex-rs/tui/src/app_server_session.rs` for response hydration and
    turn-start override projection, then
    `codex-rs/tui/src/app/thread_routing.rs` for the decision about whether
    the next turn should preserve the server snapshot, send an active
    profile id, or send a legacy sandbox for an explicit local override.
    
    ## Verification
    
    - `just write-app-server-schema`
    - `cargo test -p codex-app-server-protocol
    thread_lifecycle_responses_default_missing_optional_fields`
    - `cargo test -p codex-exec
    session_configured_from_thread_response_uses_permission_profile_from_config`
    - `cargo test -p codex-tui --lib thread_response`
    - `cargo test -p codex-tui turn_permissions_`
    - `cargo test -p codex-tui
    resume_response_restores_turns_from_thread_items`
    - `cargo test -p codex-analytics
    track_response_only_enqueues_analytics_relevant_responses`
    - `just fix -p codex-analytics`
    - `just fix -p codex-app-server-protocol`
    - `just fix -p codex-tui`
    - `just argument-comment-lint`
    
    ---
    [//]: # (BEGIN SAPLING FOOTER)
    Stack created with [Sapling](https://sapling-scm.com). Best reviewed
    with [ReviewStack](https://reviewstack.dev/openai/codex/pull/22792).
    * #22795
    * __->__ #22792
  • permissions: support workspace roots in profiles (#22610)
    ## Why
    
    This is the configuration/model half of the alternative permissions
    migration we discussed as a comparison point for
    [#22401](https://github.com/openai/codex/pull/22401) and
    [#22402](https://github.com/openai/codex/pull/22402).
    
    The old `workspace-write` model mixes three concerns that we want to
    keep separate:
    - reusable profile rules that should stay immutable once selected
    - user/runtime workspace roots from `cwd`, `--add-dir`, and legacy
    workspace-write config
    - internal Codex writable roots such as memories, which should not be
    shown as user workspace roots
    
    This PR gives permission profiles first-class `workspace_roots` so users
    can opt multiple repositories into the same `:workspace_roots` rules
    without using broad absolute-path write grants. It also starts
    separating the raw selected profile from the effective runtime profile
    by making `Permissions` expose explicit accessors instead of public
    mutable fields.
    
    A representative `config.toml` looks like this:
    
    ```toml
    default_permissions = "dev"
    
    [permissions.dev.workspace_roots]
    "~/code/openai" = true
    "~/code/developers-website" = true
    
    [permissions.dev.filesystem.":workspace_roots"]
    "." = "write"
    ".codex" = "read"
    ".git" = "read"
    ".vscode" = "read"
    ```
    
    If Codex starts in `~/code/codex` with that profile selected, the
    effective workspace-root set becomes:
    - `~/code/codex` from the runtime `cwd`
    - `~/code/openai` from the profile
    - `~/code/developers-website` from the profile
    
    The `:workspace_roots` rules are materialized across each root, so
    `.git`, `.codex`, and `.vscode` stay scoped the same way everywhere.
    Runtime additions such as `--add-dir` can still layer on later stack
    entries without mutating the selected profile.
    
    ## Stack Shape
    
    This PR intentionally stops before the profile-identity cleanup in
    [#22683](https://github.com/openai/codex/pull/22683) so the base review
    stays focused on config loading, workspace-root materialization, and
    compatibility with legacy `workspace-write`.
    
    The representation in this PR is therefore transitional: `Permissions`
    carries enough state to distinguish the raw constrained profile from the
    effective runtime profile, and there are still call sites that must keep
    the active profile identity and constrained profile value in sync. The
    follow-up PR replaces that with a single resolved profile state
    (`ResolvedPermissionProfile` / `PermissionProfileState`) that keeps the
    profile id, immutable `PermissionProfile`, and profile-declared
    workspace roots together. That follow-up removes APIs such as
    `set_constrained_permission_profile_with_active_profile()` where
    separate arguments could drift out of sync.
    
    Downstream PRs then build on this base to switch app-server turn updates
    to profile ids plus runtime workspace roots and to finish the
    user-visible summary behavior. Reviewers should judge this PR as the
    workspace-roots foundation, not as the final in-memory shape of selected
    permission profiles.
    
    ## Review Guide
    
    Suggested review order:
    
    1. Start with `codex-rs/core/src/config/mod.rs`.
    This is the main shape change in the base slice. `Permissions` now
    stores a private raw `Constrained<PermissionProfile>` plus runtime
    `workspace_roots`. Callers use `permission_profile()` when they need the
    raw constrained value and `effective_permission_profile()` when they
    need a materialized runtime profile. As noted above,
    [#22683](https://github.com/openai/codex/pull/22683) replaces this
    transitional shape with a resolved profile state that keeps identity and
    profile data together.
    
    2. Review `codex-rs/config/src/permissions_toml.rs` and
    `codex-rs/core/src/config/permissions.rs`.
    These add `[permissions.<id>.workspace_roots]`, resolve enabled entries
    relative to the policy cwd, and keep `:workspace_roots` deny-read glob
    patterns symbolic until the actual roots are known.
    
    3. Review `codex-rs/protocol/src/permissions.rs` and
    `codex-rs/protocol/src/models.rs`.
    These add the policy/profile materialization helpers that expand exact
    `:workspace_roots` entries and scoped deny-read globs over every
    workspace root. This is also where `ActivePermissionProfileModification`
    is removed from the core model.
    
    4. Review the legacy bridge in
    `Config::load_from_base_config_with_overrides` and
    `Config::set_legacy_sandbox_policy`.
    This is where legacy `workspace-write` roots become runtime workspace
    roots, while Codex internal writable roots stay internal and do not
    appear as user-facing workspace roots.
    
    5. Then skim downstream call sites.
    The interesting pattern is raw-vs-effective access: state/proxy/bwrap
    paths keep the raw constrained profile, while execution, summaries, and
    user-visible status use the effective profile and workspace-root list.
    
    ## What Changed
    
    - added `[permissions.<id>.workspace_roots]` to the config model and
    schema
    - added runtime `workspace_roots` state to `Config`/`Permissions` and
    `ConfigOverrides`
    - made `Permissions` profile fields private and replaced direct mutation
    with accessors/setters
    - added `PermissionProfile` and `FileSystemSandboxPolicy` helpers for
    materializing `:workspace_roots` exact paths and deny-read globs across
    all roots
    - moved legacy additional writable roots into runtime workspace-root
    state instead of active profile modifications
    - removed `ActivePermissionProfileModification` and its app-server
    protocol/schema export
    - updated sandbox/status summary paths so internal writable roots are
    not reported as user workspace roots
    
    ## Verification Strategy
    
    The targeted tests cover the behavior at the layers where regressions
    are most likely:
    - `codex-rs/core/src/config/config_tests.rs` verifies config loading,
    legacy workspace-root seeding, effective profile materialization, and
    memory-root handling.
    - `codex-rs/core/src/config/permissions_tests.rs` verifies profile
    `workspace_roots` parsing and `:workspace_roots` scoped/glob
    compilation.
    - `codex-rs/protocol/src/permissions.rs` unit tests verify exact and
    glob materialization over multiple workspace roots.
    - `codex-rs/tui/src/status/tests.rs` and
    `codex-rs/utils/sandbox-summary/src/sandbox_summary.rs` verify the
    user-facing summaries show effective workspace roots and hide internal
    writes.
    
    I also ran `cargo check --tests` locally after the latest stack refresh
    to catch cross-crate API breakage from the private-field/accessor
    changes.
    
    
    
    
    
    
    
    ---
    [//]: # (BEGIN SAPLING FOOTER)
    Stack created with [Sapling](https://sapling-scm.com). Best reviewed
    with [ReviewStack](https://reviewstack.dev/openai/codex/pull/22610).
    * #22612
    * #22611
    * #22683
    * __->__ #22610
  • Trim TUI legacy core helper usage (#22695)
    ## Why
    
    The TUI still had a few low-risk dependencies flowing through the
    transitional `legacy_core` namespace after the app-server migration.
    These helpers either already have clearer non-core owners or are
    presentation logic that does not belong in `codex-core`, so moving them
    out reduces the compatibility surface without changing product behavior.
    
    ## What changed
    
    This is a low-risk change, almost completely mechanical in nature.
    
    - Route TUI Codex-home lookup through `codex-utils-home-dir`, use
    `Config::log_dir` directly, and call
    `codex-sandboxing::system_bwrap_warning` without going through
    `legacy_core`.
    - Move shared `codex resume` hint formatting from `codex-core` into
    `codex-utils-cli`.
    - Update CLI and TUI call sites to use the shared CLI utility, and keep
    the resume-command behavior covered by tests in its new home.
    
    ## Verification
    
    - `cargo test -p codex-utils-cli`
    - `cargo test -p codex-utils-cli resume_command`
  • feat: add layered --profile-v2 config files (#17141)
    ## Why
    
    `--profile-v2 <name>` gives launchers and runtime entry points a named
    profile config without making each profile duplicate the base user
    config. The base `$CODEX_HOME/config.toml` still loads first, then
    `$CODEX_HOME/<name>.config.toml` layers above it and becomes the active
    writable user config for that session.
    
    That keeps shared defaults, plugin/MCP setup, and managed/user
    constraints in one place while letting a named profile override only the
    pieces that need to differ.
    
    ## What Changed
    
    - Added the shared `--profile-v2 <name>` runtime option with validated
    plain names, now represented by `ProfileV2Name`.
    - Extended config layer state so the base user config and selected
    profile config are both `User` layers; APIs expose the active user layer
    and merged effective user config.
    - Threaded profile selection through runtime entry points: `codex`,
    `codex exec`, `codex review`, `codex resume`, `codex fork`, and `codex
    debug prompt-input`.
    - Made user-facing config writes go to the selected profile file when
    active, including TUI/settings persistence, app-server config writes,
    and MCP/app tool approval persistence.
    - Made plugin, marketplace, MCP, hooks, and config reload paths read
    from the merged user config so base and profile layers both participate.
    - Updated app-server config layer schemas to mark profile-backed user
    layers.
    
    ## Limits
    
    `--profile-v2` is still rejected for config-management subcommands such
    as feature, MCP, and marketplace edits. Those paths remain tied to the
    base `config.toml` until they have explicit profile-selection semantics.
    
    Some adjacent background writes may still update base or global state
    rather than the selected profile:
    
    - marketplace auto-upgrade metadata
    - automatic MCP dependency installs from skills
    - remote plugin sync or uninstall config edits
    - personality migration marker/default writes
    
    ## Verification
    
    Added targeted coverage for profile name validation, layer
    ordering/merging, selected-profile writes, app-server config writes,
    session hot reload, plugin config merging, hooks/config fixture updates,
    and MCP/app approval persistence.
    
    ---------
    
    Co-authored-by: Codex <noreply@openai.com>
  • Defer startup NUX impressions until startup succeeds (#22587)
    ## Why
    
    This is a follow-up to #22573. This problem was surfaced in a code
    review comment that I missed before merging the previous PR.
    
    Fresh-session startup could prepare a model-availability NUX before
    `app_server.start_thread(&config)` completed. If thread startup then
    failed, the TUI never rendered the tooltip, but
    `prepare_startup_tooltip_override(...)` had already persisted one of the
    limited impressions.
    
    ## What Changed
    
    - Move startup tooltip preparation inside the fresh-thread startup
    branch, after `start_thread(...)` succeeds.
    - Keep resume/fork paths unchanged.
    - Remove the now-redundant
    `should_prepare_startup_tooltip_override(...)` helper and its gate test.
  • Simplify TUI startup test coverage (#22573)
    ## Why
    
    The TUI startup test surface had drifted into expensive, brittle
    coverage:
    
    - `tui/tests/suite/no_panic_on_startup.rs` was already ignored as flaky
    while still spawning a PTY to exercise malformed exec-policy rules.
    - `tui/tests/suite/model_availability_nux.rs` used a seeded session,
    cursor-query spoofing, and repeated interrupts to verify a narrow
    resume-path invariant.
    - `app/tests.rs` had started accumulating unrelated startup and summary
    coverage in one flat module even after the surrounding app code was
    split into feature modules.
    
    This keeps those behaviors covered while making the tests cheaper to
    understand and less likely to rot. It also preserves the malformed-rules
    regression from #8803 without requiring a terminal orchestration test.
    
    ## What changed
    
    - Replaced the malformed `rules` startup PTY case with a direct
    exec-policy loader regression:
    
    [`rules_path_file_returns_read_dir_error`](https://github.com/openai/codex/blob/21b6b5622f18b8cac0ea41fd083b3106778d9ffc/codex-rs/core/src/exec_policy_tests.rs#L264-L284)
    - Made the existing fresh-session-only startup tooltip behavior explicit
    with
    
    [`should_prepare_startup_tooltip_override`](https://github.com/openai/codex/blob/21b6b5622f18b8cac0ea41fd083b3106778d9ffc/codex-rs/tui/src/app/thread_routing.rs#L1272-L1279),
    then added focused coverage for the resume/fork gate and the persisted
    NUX counter.
    - Split startup and session-summary coverage out of
    `tui/src/app/tests.rs` into dedicated modules so the test layout better
    mirrors the current app architecture.
    - Converted one single-message goal validation snapshot into semantic
    assertions where layout was not the behavior under test.
    - Removed the two PTY-heavy suite files that the narrower tests now
    supersede.
    
    ## Verification
    
    - `cargo test -p codex-core rules_path_file_returns_read_dir_error`
    - `cargo test -p codex-tui startup_`
    - `cargo test -p codex-tui session_summary_`
    - `cargo test -p codex-tui
    goal_slash_command_rejects_oversized_objective`
  • Use plugin/list to get list of plugins for mentions (#22375)
    This switches TUI plugin mentions to use app-server `plugin/list` for
    plugin inventory and metadata instead of `PluginManager`, while keeping
    the same mention-eligibility filters as before.
    
    Same filters as before:
    - Only plugins in the current config / cwd scope.
    - Only installed and enabled plugins.
    - Only plugins that actually expose a capability, meaning at least one
    skill, MCP server, or app connector.
    - Uses `plugin/list` for the mention names/descriptions
  • Add support for UDS in codex --remote (#22414)
    ## Why
    
    Added support for UDS connections in `codex --remote`.
    
    TUI also now connects to local app-server using UDS by default if it is
    running and set to listen to UDS connection.
    
    ## What Changed
    
    - Introduced `RemoteAppServerEndpoint` with `WebSocket` and `UnixSocket`
    variants.
    - Reused the existing JSON-RPC-over-WebSocket protocol over either a TCP
    WebSocket stream or a UDS stream.
    - Updated `codex --remote` to accept `ws://host:port`,
    `wss://host:port`, `unix://`, and `unix://PATH`.
    - Kept `--remote-auth-token-env` restricted to `wss://` and loopback
    `ws://` remotes.
    - Added a fast TUI startup probe for the default daemon socket, falling
    back to the embedded app server when the daemon is absent or
    unresponsive.
    
    ## Verification
    
    - Manually verified that the updated remote flow works.
    - Added coverage for UDS remote round trips, WebSocket auth headers,
    auth-token transport policy, remote address parsing, and missing-daemon
    fallback.
    - Ran focused remote test coverage locally.
  • feat(tui): add ambient terminal pets (#21206)
    ## Why
    
    The Codex App has animated pets, but the TUI had no equivalent ambient
    companion surface. This brings that experience into terminal Codex while
    keeping the main chat flow usable: the pet should feel present, but it
    cannot cover transcript text, composer input, approvals, or picker
    content.
    
    The feature also needs to be terminal-aware. Different terminals support
    different image protocols, tmux can interfere with image rendering, and
    some users will want pets disabled entirely or anchored differently
    depending on their layout.
    
    <table>
    <tr><td>
    <img width="4110" height="2584" alt="CleanShot 2026-05-05 at 12 41
    45@2x"
    src="https://github.com/user-attachments/assets/68a1fcbc-2104-48d6-b834-69c6aaa95cdf"
    />
    <p align="center">macOS - Ghostty, iTerm2 and WezTerm with Custom
    Pet</p>
    </td></tr>
    <tr><td>
    ![Uploading CleanShot 2026-05-10 at 20.28.30.png…]()
    <p align="center">Windows Terminal</p>
    </td></tr>
    <tr><td>
    <img width="3902" height="2752" alt="CleanShot 2026-05-05 at 12 39
    02@2x"
    src="https://github.com/user-attachments/assets/300e2931-6b00-467e-91cb-ab8e28470500"
    />
    <p align="center">Linux - WezTerm and Ghostty</p>
    </td></tr>
    </table>
    
    ## What Changed
    
    - Add a TUI ambient pet renderer in `codex-rs/tui/src/pets/`.
    - Port the app-style pet animation states so the sprite changes with
    task status, waiting-for-input states, review/ready states, and
    failures.
    - Add `/pets` selection UI with a preview pane, loading state, built-in
    pet choices, and a first-row `Disable terminal pets` option.
    - Download built-in pet spritesheets on demand from the same public CDN
    path already used by Android, under
    `https://persistent.oaistatic.com/codex/pets/v1/...`, and cache them
    locally under `~/.codex/cache/tui-pets/`.
    - Keep custom pets local.
    - Add config support for pet selection, disabling pets, and choosing
    whether the pet follows the composer bottom or anchors to the terminal
    bottom.
    - Reserve layout space around the pet so transcript wrapping, live
    responses, and composer input do not render underneath the sprite.
    - Gate image rendering by terminal capability, disable image pets under
    tmux, and support both Kitty Graphics and SIXEL terminals.
    - Add redraw cleanup for terminal image artifacts, including sixel cell
    clearing.
    
    ## Current Scope
    
    - This is an initial TUI version of ambient pets, not full App parity.
    - It focuses on ambient sprite rendering, `/pets` selection, custom
    pets, terminal capability gating, and on-demand CDN-backed built-in
    assets.
    - The ambient text overlay is currently disabled, so the TUI renders the
    pet sprite without extra status text beside it.
    
    ## How to Test
    
    1. Start Codex TUI in a terminal with image support.
    2. Run `/pets`.
    3. Confirm the picker shows built-in pets plus custom pets, and the
    first item is `Disable terminal pets`.
    4. On a fresh `~/.codex/cache/tui-pets/`, move onto a built-in pet and
    confirm the first preview downloads the spritesheet from the shared
    Codex pets CDN and renders successfully.
    5. Move through the pet list and confirm subsequent built-in previews
    use the local cache.
    6. Select a pet, then send and receive messages. Confirm transcript and
    composer text wrap before the pet instead of rendering underneath the
    sprite.
    7. Change the pet anchor setting and confirm the pet can either follow
    the composer bottom or sit at the terminal bottom.
    8. Return to `/pets`, choose `Disable terminal pets`, and confirm the
    sprite disappears cleanly.
    
    Targeted tests:
    - `cargo test -p codex-tui ambient_pet_`
    - `cargo test -p codex-tui
    resize_reflow_wraps_transcript_early_when_pet_is_enabled`
    - `cargo insta pending-snapshots`
  • feat(tui): render responsive Markdown tables in TUI (#22052)
    ## Why
    
    The TUI currently treats Markdown tables as ordinary wrapped text, which
    makes table-heavy responses hard to read and brittle across narrow panes
    and terminal resizes.
    
    This change teaches the TUI to render Markdown tables responsively while
    preserving the raw Markdown source needed to re-render streamed and
    finalized transcript content after width changes. The goal is to keep
    tables legible during streaming, after resize, and once a turn has
    finished, without corrupting scrollback ordering.
    
    ## What Changed
    
    - add table detection and responsive table rendering in the Markdown
    renderer
    - render standard tables with Unicode box-drawing borders when the pane
    is wide enough
    - add a vertical readability fallback for constrained or dense tables so
    narrow panes still show each row clearly
    - keep links and `<br>` content inside table cells instead of leaking
    text outside the table
    - avoid table normalization inside fenced or indented code blocks
    - preserve raw streamed Markdown source and keep the active table as a
    mutable tail until finalization
    - consolidate finalized streamed content into source-backed transcript
    cells so post-resize re-rendering stays correct
    - add snapshot and targeted streaming/resize regression coverage for the
    new table behavior
    
    ## How to Test
    
    1. Start Codex TUI from this branch.
    2. Paste this exact prompt:
    `This is a session to test codex, no need to do any thinking, just end
    different markdown tables, with columns exploring different markdown
    contents, like links, bold italic, code, etc. Make them different sizes,
    some 30+ rows, some not and intertwine them with some paragraphs with
    complex formatting as well.`
    3. Confirm the response includes several Markdown tables mixed with
    richly formatted paragraphs.
    4. Confirm wide-enough tables render with box-drawing borders instead of
    plain wrapped pipe text.
    5. Resize the terminal narrower while the answer is still streaming and
    confirm the in-progress table stays coherent instead of duplicating
    headers or leaving broken scrollback behind.
    6. Resize again after the turn finishes and confirm the finalized
    transcript re-renders cleanly at the new width.
    7. In a narrow pane, verify dense tables fall back to the vertical
    per-row layout instead of producing unreadable wrapped columns.
    8. Also verify pipe-heavy fenced code blocks still render as code, not
    as tables.
    
    Targeted tests:
    - `cargo test -p codex-tui table_readability_fallback --no-fail-fast`
    - `cargo test -p codex-tui markdown_render --no-fail-fast`
    - `cargo test -p codex-tui streaming::controller --no-fail-fast`
    - `cargo test -p codex-tui table_resize_lifecycle --no-fail-fast`
    
    ## Docs
    
    No developer docs update appears necessary.
  • Avoid blocking TUI on agent metadata hydration (#21870)
    ## Why
    
    Fixes #16688.
    
    The TUI currently hydrates collab receiver metadata by awaiting
    `thread/read` before each active-thread notification is rendered. During
    large subagent fan-outs, the embedded app-server can be busy starting
    agents and processing spawn work, so those synchronous metadata reads
    queue behind the fan-out and block the TUI event loop. That makes the UI
    appear frozen even though the underlying agent work can continue.
    
    ## What Changed
    
    - Replaced eager `thread/read` metadata hydration on the active
    notification path with local receiver-thread caching.
    - Kept `ThreadStarted` and picker refreshes as the places that fill in
    agent nickname/role metadata when it is available.
    - Skipped caching receiver threads that are explicitly reported as
    `NotFound`, avoiding live-looking ghost entries for failed stale-agent
    calls.
    - Added TUI tests covering both local receiver caching and `NotFound`
    suppression.
    
    ## Verification
    
    - `cargo test -p codex-tui collab_receiver_notification`
    - `just fix -p codex-tui`
    
    I also ran the full `cargo test -p codex-tui`; the new test passed, but
    the full process later aborted with an unrelated stack overflow in
    `tests::fork_last_filters_latest_session_by_cwd_unless_show_all`.
  • Improve hooks trust flow in TUI (#21755)
    # Why
    Hooks that need trust review were easy to miss, and the existing TUI
    flow made users discover `/hooks` manually before they could decide
    whether to inspect or trust them.
    
    # What
    - add a startup review prompt for new or changed hooks before normal
    composer use
    - add a top-level `t` shortcut in `/hooks` to trust every review-needed
    hook at once
    - make pending-review rows and helper copy use warning styling
    
    ## TUI
    
    ### Startup review interstitial
    
    ```text
    Hooks need review
    2 hooks are new or changed.
    Hooks can run outside the sandbox after you trust them.
    
    › 1. Review hooks
      2. Trust all and continue
      3. Continue without trusting (hooks won't run)
    ```
    
    ### Top-level `/hooks` page when review is needed
    
    ```text
    Hooks
    Lifecycle hooks from config and enabled plugins.
    
    ⚠ 1 hook needs review before it can run.
    
    Event                 Installed   Active   Review   Description
    PreToolUse            1           0        1        Before a tool executes
    ...
    
    Press t to trust all; enter to review hooks; esc to close
    ```
  • Load configured environments from CODEX_HOME (#20667)
    ## Why
    
    The earlier PRs add stdio transport support and the config-backed
    environment provider, but the feature remains inert until normal Codex
    entrypoints construct `EnvironmentManager` with enough context to
    discover `CODEX_HOME/environments.toml`. This final stack PR activates
    the provider while preserving the legacy `CODEX_EXEC_SERVER_URL`
    fallback when no environments file exists.
    
    **Stack position:** this is PR 5 of 5. It is the product wiring PR that
    activates the configured environment provider added in PR 4.
    
    ## What Changed
    
    - Thread `codex_home` into `EnvironmentManagerArgs`.
    - Change `EnvironmentManager::new(...)` to load the provider from
    `CODEX_HOME`.
    - Preserve legacy behavior by falling back to
    `DefaultEnvironmentProvider::from_env()` when `environments.toml` is
    absent.
    - Make `environments.toml`-backed managers start new threads with all
    configured environments, default first, while keeping the legacy env-var
    path single-default.
    - Update the app-server, TUI, exec, MCP server, connector, prompt-debug,
    and thread-manager-sample callsites to pass `codex_home` and handle
    provider-loading errors.
    
    ## Self-Review Notes
    
    - The multi-environment startup path is intentionally tied to the
    `environments.toml` provider. Using `>1` configured environment as the
    only signal would also expand the legacy `CODEX_EXEC_SERVER_URL`
    provider because it keeps `local` addressable alongside `remote`.
    - The startup environment list is still derived inside
    `EnvironmentManager`; the provider only says whether its snapshot should
    start new threads with all configured environments.
    - The thread-manager sample was updated to pass the current
    `ThreadManager::new(...)` installation id argument so the stack compiles
    under Bazel.
    
    ## Stack
    
    - 1. https://github.com/openai/codex/pull/20663 - Add stdio exec-server
    listener
    - 2. https://github.com/openai/codex/pull/20664 - Add stdio exec-server
    client transport
    - 3. https://github.com/openai/codex/pull/20665 - Make environment
    providers own default selection
    - 4. https://github.com/openai/codex/pull/20666 - Add CODEX_HOME
    environments TOML provider
    - **5. This PR:** https://github.com/openai/codex/pull/20667 - Load
    configured environments from CODEX_HOME
    
    Split from original draft: https://github.com/openai/codex/pull/20508
    
    ## Validation
    
    - `just fmt`
    - `git diff --check`
    - `bazel build --config=remote --strategy=remote
    --remote_download_toplevel
    //codex-rs/thread-manager-sample:codex-thread-manager-sample`
    - `bazel test --config=remote --strategy=remote
    --remote_download_toplevel
    //codex-rs/exec-server:exec-server-unit-tests`
    - `bazel test --config=remote --strategy=remote
    --remote_download_toplevel --test_sharding_strategy=disabled
    --test_arg=default_thread_environment_selections_use_manager_default_id
    //codex-rs/core:core-unit-tests`
    - `bazel test --config=remote --strategy=remote
    --remote_download_toplevel --test_sharding_strategy=disabled
    --test_arg=start_thread_uses_all_default_environments_from_codex_home
    //codex-rs/core:core-unit-tests`
    
    ## Documentation
    
    This activates `CODEX_HOME/environments.toml`; user-facing documentation
    should be added before this stack is treated as a documented public
    workflow.
    
    ---------
    
    Co-authored-by: Codex <noreply@openai.com>
  • Move message history out of core (#21278)
    ## Why
    
    Message history was implemented inside `codex-core` and surfaced through
    core protocol ops and `SessionConfiguredEvent` fields even though the
    current consumer is TUI-local prompt recall. That made core own UI
    history persistence and exposed `history_log_id` / `history_entry_count`
    through surfaces that app-server and other clients do not need.
    
    This change moves message history persistence out of core and keeps the
    recall plumbing local to the TUI.
    
    ## What changed
    
    - Added a new `codex-message-history` crate for appending, looking up,
    trimming, and reading metadata from `history.jsonl`.
    - Removed core protocol history ops/events: `AddToHistory`,
    `GetHistoryEntryRequest`, and `GetHistoryEntryResponse`.
    - Removed `history_log_id` and `history_entry_count` from
    `SessionConfiguredEvent` and updated exec/MCP/test fixtures accordingly.
    - Updated the TUI to dispatch local app events for message-history
    append/lookup and keep its persistent-history metadata in TUI session
    state.
    
    ## Validation
    
    - `cargo test -p codex-message-history -p codex-protocol`
    - `cargo test -p codex-exec event_processor_with_json_output`
    - `cargo test -p codex-mcp-server outgoing_message`
    - `cargo test -p codex-tui`
    - `just fix -p codex-message-history -p codex-protocol -p codex-core -p
    codex-tui -p codex-exec -p codex-mcp-server`
  • Support Codex Apps auth elicitations (#19193)
    ## Summary
    
    - request URL-mode MCP elicitations when Codex Apps tool calls fail with
    connector auth metadata
    - route Codex Apps auth URL elicitations into the TUI app-link flow
    
    ## Test plan
    
    - `just fmt`
    - `cargo test -p codex-core mcp_tool_call::tests`
    - `cargo test -p codex-mcp`
    - `cargo test -p codex-tui bottom_pane::app_link_view::tests`
    - `just fix -p codex-core`
    - `just fix -p codex-mcp`
    - `just fix -p codex-tui`
    
    Also attempted broader local runs:
    
    - `cargo test -p codex-core` fails in unrelated
    config/request-permission/proxy-sensitive tests under the current Codex
    Desktop environment.
    - `cargo test -p codex-tui` fails in unrelated status
    snapshots/trust-default tests because the ambient environment renders
    workspace-write/network permission defaults.
  • hook trust metadata and enforcement (#20321)
    # Why
    
    We want shared hook trust that both the app and the TUI can build on,
    but the metadata is only useful if runtime behavior agrees with it. This
    PR adds a single backend trust model for hooks so unmanaged hooks cannot
    run until the current definition has been reviewed, while managed hooks
    remain runnable and non-configurable.
    
    # What
    
    - persist `trusted_hash` alongside hook state in `config.toml`
    - expose `currentHash` and derived `trustStatus` through `hooks/list`
    - derive trust from normalized hook definitions so equivalent hooks from
    `config.toml` and `hooks.json` share the same trust identity
    - gate unmanaged hooks on trust before they enter the runnable handler
    set
    
    # Reviewer Notes
    
    - key file to review is `codex-rs/hooks/src/engine/discovery.rs`
    - the only **core** change is schema related
  • feat(tui): add PR summary statusline items (#20892)
    ## Why?
    
    The Codex App already exposes branch and PR context in its
    branch-details UI. This brings the same context into the CLI footer as
    opt-in statusline items, so users can choose the extra signal without
    making the default footer busier.
    
    ## What?
    
    Add optional `pull-request-number` and `branch-changes` items to the
    configurable TUI status line.
    
    - `pull-request-number` shows the open PR for the current checkout and
    renders as a clickable terminal hyperlink when OSC 8 links are
    supported.
    - `branch-changes` shows committed additions/deletions against the
    repository default branch, or `No changes` when the branch has no
    committed diff.
    
    <img width="1257" height="261" alt="CleanShot 2026-05-03 at 20 44 15"
    src="https://github.com/user-attachments/assets/10b4380b-c3e9-4729-9ee1-3f742068fa47"
    />
    
    ## Architecture
    
    This follows the same client/app-server split as the Codex App: the TUI
    owns presentation, caching, and optional rendering, while
    workspace-sensitive `git` and `gh` discovery runs through app-server.
    
    The new TUI-local `workspace_command` layer sends bounded,
    non-interactive `command/exec` requests to the active app-server. That
    makes the implementation remote-friendly: the TUI does not decide
    whether commands run in an embedded local workspace or a remote
    workspace, and it does not bypass app-server sandbox or permission
    policy.
    
    The branch summary logic stays internal to `codex-tui` because this PR
    only needs TUI statusline behavior. The command boundary is still
    isolated behind `WorkspaceCommandExecutor`, so the lookup code can be
    lifted or reused later without changing statusline rendering.
    
    ## How?
    
    - Add a TUI `WorkspaceCommandExecutor` abstraction backed by app-server
    `command/exec`.
    - Add branch summary probes for:
      - current branch name,
      - open PR metadata,
      - committed branch diff stats against the default branch.
    - Prefer remote-tracking default branch refs for diff stats, avoiding
    stale or absent local `main` branches.
    - Resolve PRs with `gh pr view` first, then fall back to
    commit-associated PR lookup across parent/fork repos.
    - Add `/statusline` picker entries, preview values, rendering, and OSC 8
    clickable PR links.
    - Keep all probes best-effort so missing `git`, missing `gh`, auth
    failures, or non-git directories hide optional items instead of
    surfacing footer errors.
    
    ## Validation
    
    - `cargo test -p codex-tui branch_summary -- --nocapture`
    - Snapshot coverage for the `/statusline` preview/setup rendering paths
    - Hyperlink rendering coverage for clickable PR statusline cells
  • state: pass state db handles through consumers (#20561)
    ## Why
    
    SQLite state was still being opened from consumer paths, including lazy
    `OnceCell`-backed thread-store call sites. That let one process
    construct multiple state DB connections for the same Codex home, which
    makes SQLite lock contention and `database is locked` failures much
    easier to hit.
    
    State DB lifetime should be chosen by main-like entrypoints and tests,
    then passed through explicitly. Consumers should use the supplied
    `Option<StateDbHandle>` or `StateDbHandle` and keep their existing
    filesystem fallback or error behavior when no handle is available.
    
    The startup path also needs to keep the rollout crate in charge of
    SQLite state initialization. Opening `codex_state::StateRuntime`
    directly bypasses rollout metadata backfill, so entrypoints should
    initialize through `codex_rollout::state_db` and receive a handle only
    after required rollout backfills have completed.
    
    ## What Changed
    
    - Initialize the state DB in main-like entrypoints for CLI, TUI,
    app-server, exec, MCP server, and the thread-manager sample.
    - Pass `Option<StateDbHandle>` through `ThreadManager`,
    `LocalThreadStore`, app-server processors, TUI app wiring, rollout
    listing/recording, personality migration, shell snapshot cleanup,
    session-name lookup, and memory/device-key consumers.
    - Remove the lazy local state DB wrapper from the thread store so
    non-test consumers use only the supplied handle or their existing
    fallback path.
    - Make `codex_rollout::state_db::init` the local state startup path: it
    opens/migrates SQLite, runs rollout metadata backfill when needed, waits
    for concurrent backfill workers up to a bounded timeout, verifies
    completion, and then returns the initialized handle.
    - Keep optional/non-owning SQLite helpers, such as remote TUI local
    reads, as open-only paths that do not run startup backfill.
    - Switch app-server startup from direct
    `codex_state::StateRuntime::init` to the rollout state initializer so
    app-server cannot skip rollout backfill.
    - Collapse split rollout lookup/list APIs so callers use the normal
    methods with an optional state handle instead of `_with_state_db`
    variants.
    - Restore `getConversationSummary(ThreadId)` to delegate through
    `ThreadStore::read_thread` instead of a LocalThreadStore-specific
    rollout path special case.
    - Keep DB-backed rollout path lookup keyed on the DB row and file
    existence, without imposing the filesystem filename convention on
    existing DB rows.
    - Verify readable DB-backed rollout paths against `session_meta.id`
    before returning them, so a stale SQLite row that points at another
    thread's JSONL falls back to filesystem search and read-repairs the DB
    row.
    - Keep `debug prompt-input` filesystem-only so a one-off debug command
    does not initialize or backfill SQLite state just to print prompt input.
    - Keep goal-session test Codex homes alive only in the goal-specific
    helper, rather than leaking tempdirs from the shared session test
    helper.
    - Update tests and call sites to pass explicit state handles where DB
    behavior is expected and explicit `None` where filesystem-only behavior
    is intended.
    
    ## Validation
    
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo check -p
    codex-rollout -p codex-thread-store -p codex-app-server -p codex-core -p
    codex-tui -p codex-exec -p codex-cli --tests`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p
    codex-rollout state_db_`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p
    codex-rollout find_thread_path`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p
    codex-rollout find_thread_path -- --nocapture`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p
    codex-rollout try_init_ -- --nocapture`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p
    codex-rollout`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo clippy -p
    codex-rollout --lib -- -D warnings`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p
    codex-thread-store
    read_thread_falls_back_when_sqlite_path_points_to_another_thread --
    --nocapture`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p
    codex-thread-store`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-core
    shell_snapshot`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-core
    --test all personality_migration`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-core
    --test all rollout_list_find`
    - `RUST_MIN_STACK=8388608 CODEX_SKIP_VENDORED_BWRAP=1
    CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-core
    --test all rollout_list_find::find_prefers_sqlite_path_by_id --
    --nocapture`
    - `RUST_MIN_STACK=8388608 CODEX_SKIP_VENDORED_BWRAP=1
    CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-core
    --test all rollout_list_find -- --nocapture`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p codex-core
    interrupt_accounts_active_goal_before_pausing`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p
    codex-app-server get_auth_status -- --test-threads=1`
    - `CODEX_SKIP_VENDORED_BWRAP=1
    CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo test -p
    codex-app-server --lib`
    - `CODEX_SKIP_VENDORED_BWRAP=1
    CARGO_TARGET_DIR=/tmp/codex-target-state-db cargo check -p codex-rollout
    -p codex-app-server --tests`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db just fix -p codex-rollout
    -p codex-thread-store -p codex-core -p codex-app-server -p codex-tui -p
    codex-exec -p codex-cli`
    - `CODEX_SKIP_VENDORED_BWRAP=1
    CARGO_TARGET_DIR=/tmp/codex-target-state-db just fix -p codex-rollout -p
    codex-app-server`
    - `CARGO_TARGET_DIR=/tmp/codex-target-state-db just fix -p
    codex-rollout`
    - `CODEX_SKIP_VENDORED_BWRAP=1
    CARGO_TARGET_DIR=/tmp/codex-target-state-db just fix -p codex-core`
    - `just argument-comment-lint -p codex-core`
    - `just argument-comment-lint -p codex-rollout`
    
    Focused coverage added in `codex-rollout`:
    
    - `recorder::tests::state_db_init_backfills_before_returning` verifies
    the rollout metadata row exists before startup init returns.
    - `state_db::tests::try_init_waits_for_concurrent_startup_backfill`
    verifies startup waits for another worker to finish backfill instead of
    disabling the handle for the process.
    -
    `state_db::tests::try_init_times_out_waiting_for_stuck_startup_backfill`
    verifies startup does not hang indefinitely on a stuck backfill lease.
    -
    `tests::find_thread_path_accepts_existing_state_db_path_without_canonical_filename`
    verifies DB-backed lookup accepts valid existing rollout paths even when
    the filename does not include the thread UUID.
    -
    `tests::find_thread_path_falls_back_when_db_path_points_to_another_thread`
    verifies DB-backed lookup ignores a stale row whose existing path
    belongs to another thread and read-repairs the row after filesystem
    fallback.
    
    Focused coverage updated in `codex-core`:
    
    - `rollout_list_find::find_prefers_sqlite_path_by_id` now uses a
    DB-preferred rollout file with matching `session_meta.id`, so it still
    verifies that valid SQLite paths win without depending on stale/empty
    rollout contents.
    
    `cargo test -p codex-app-server thread_list_respects_search_term_filter
    -- --test-threads=1 --nocapture` was attempted locally but timed out
    waiting for the app-server test harness `initialize` response before
    reaching the changed thread-list code path.
    
    `bazel test //codex-rs/thread-store:thread-store-unit-tests
    --test_output=errors` was attempted locally after the thread-store fix,
    but this container failed before target analysis while fetching `v8+`
    through BuildBuddy/direct GitHub. The equivalent local crate coverage,
    including `cargo test -p codex-thread-store`, passes.
    
    A plain local `cargo check -p codex-rollout -p codex-app-server --tests`
    also requires system `libcap.pc` for `codex-linux-sandbox`; the
    follow-up app-server check above used `CODEX_SKIP_VENDORED_BWRAP=1` in
    this container.
  • tui: retire /approvals and rename /autoreview to /approve (#21034)
    ## Why
    
    The TUI currently exposes overlapping command names for the same
    permissions flow: `/permissions` and the older `/approvals` alias. It
    also uses `/autoreview` for the manual retry flow, even though the
    action users take there is approving one denied auto-review request.
    
    This change makes the command surface consistent with the hard rebrand:
    - `/permissions` is the only command for permission settings.
    - `/approve` is the command for approving a recent auto-review denial.
    
    ## What changed
    
    - Removed the legacy `/approvals` slash command and its dispatch path.
    - Kept `/permissions` as the single permissions command shown and
    accepted by the TUI.
    - Renamed the auto-review denial command from `/autoreview` to
    `/approve`.
    - Updated nearby comments so they refer to `/permissions` rather than
    the retired `/approvals` name.
    
    ## Verification
    
    - Updated the slash-command unit test to assert that `AutoReview` now
    renders and parses as `approve`.
  • Speed up /side parent restore replay (#20815)
    ## Why
    
    Returning from a `/side` conversation restores the parent thread by
    replaying its snapshot into the TUI. For very long parent threads,
    replaying every transcript row can take noticeable time even though most
    rows immediately scroll out of terminal history.
    
    ## What Changed
    
    - Buffer thread-switch replay for parent restores when terminal resize
    reflow is enabled.
    - Reuse the existing resize-reflow tail renderer so only the retained
    transcript tail is written back to scrollback when a row cap is
    configured.
  • Keep paused goals paused on thread resume (#20790)
    ## Summary
    
    Early adopters of the `/goal` feature have provided feedback that they
    expect a goal they explicitly paused to remain paused when they resume a
    thread. Previously, resuming a thread would reactivate a paused goal.
    
    This PR keeps persisted goal status unchanged during thread resume. This
    honors the user feedback while also simplifying the core goal logic.
    
    Rather than have the core logic automatically resume a paused goal, that
    responsibility is transferred to the client. The TUI now detects a
    resumed thread with a paused goal and asks the user whether to `Resume
    goal` or `Leave paused`. The prompt appears only for quiet resume flows,
    so users who resume with an immediate prompt are not interrupted.
    
    <img width="544" height="111" alt="image"
    src="https://github.com/user-attachments/assets/0ac9de1c-6ee6-47ba-b223-c03c8eb4c192"
    />
  • feat(tui): add vim composer mode (#18595)
    ## Why
    
    Codex now has configurable TUI keymaps, but the composer still behaves
    like a plain text field. Users who prefer modal editing need a way to
    keep Vim muscle memory while drafting prompts, and the keymap picker
    needs to expose Vim-specific actions if those bindings are configurable
    instead of hardcoded.
    
    ## What Changed
    
    - Adds composer Vim mode with insert/normal state, common normal-mode
    movement and editing commands, `d`/`y` operator-pending flows, and
    mode-aware footer and cursor indicators.
    - Adds `/vim`, an optional global `toggle_vim_mode` binding, and
    `tui.vim_mode_default` so Vim mode can be toggled per session or enabled
    as the default composer state.
    - Extends runtime and config keymaps with `vim_normal` and
    `vim_operator` contexts, exposes those contexts in `/keymap`, refreshes
    the config schema, and validates Vim bindings separately.
    - Integrates Vim normal mode with existing composer behavior: `/` opens
    slash command entry, `!` enters shell mode, `j`/`k` navigate history at
    history boundaries, successful submissions reset back to normal mode,
    and paste burst handling remains insert-mode only.
    - Teaches the TUI render path to apply and restore cursor style so Vim
    insert mode can use a bar cursor without leaving the terminal in that
    state after exit.
    
    ## Validation
    
    - `cargo test -p codex-tui keymap -- --nocapture` on the keymap/Vim
    coverage
    - `cargo insta pending-snapshots`
    
    ## Docs
    
    This introduces user-facing `/vim`, `tui.vim_mode_default`, and Vim
    keymap contexts under `tui.keymap`, so the public CLI configuration and
    slash-command docs should be updated before the feature ships.
  • fix: show correct Bedrock runtime endpoint in /status (#20275)
    ## Why
    
    `/status` was showing the configured `ModelProviderInfo.base_url` for
    Amazon Bedrock, which can be stale or misleading because the actual
    Bedrock Mantle endpoint is derived at runtime from the resolved AWS
    region. This made sessions report the wrong provider endpoint even
    though requests used the correct runtime URL.
    
    ## What changed
    
    - Added `ModelProvider::runtime_base_url()` so provider implementations
    can expose the request-time base URL through the shared runtime provider
    abstraction.
    - Moved Bedrock region-to-Mantle URL resolution into
    `amazon_bedrock::mantle::runtime_base_url()`, keeping region resolution
    private to the Mantle module.
    - Overrode `runtime_base_url()` for Amazon Bedrock so it returns the
    resolved Mantle endpoint instead of the configured default.
    - Resolved and cached the runtime provider base URL during TUI startup,
    then used that cached value when rendering `/status`.
    - Added status coverage that verifies Bedrock displays the runtime URL
    and ignores the configured Bedrock `base_url` when they differ.
    
    ## Verification
    model provider is resolved correctly in local build:
    <img width="696" height="245" alt="Screenshot 2026-04-29 at 5 01 36 PM"
    src="https://github.com/user-attachments/assets/a13c10a5-3720-41ab-8ace-3c4bc573f971"
    />
  • Add /hooks browser for lifecycle hooks (#19882)
    ## Why
    
    `hooks/list` and `hooks/config/write` give us read/write access to hooks
    and their state. This hooks up the TUI as a client so users can inspect
    and manage that state directly.
    
    ## What
    
    - add a two-page `/hooks` browser in the TUI: an event overview with
    installed/active counts, followed by a per-event handler page with
    toggle controls and detail rendering
    - thread managed-state metadata through hook discovery and `hooks/list`
    so the UI can label admin-managed hooks and suppress toggles for them
    - persist hook toggles through the existing config-write path and add
    snapshot coverage for the event list, handler list, managed-hook, and
    empty states
    
    ## Stack
    
    1. openai/codex#19705
    2. openai/codex#19778
    3. openai/codex#19840
    4. This PR - openai/codex#19882
    
    ## Reviewer Notes
    
    - Main UI logic is in
    `codex-rs/tui/src/bottom_pane/hooks_browser_view.rs`; most of the diff
    is the new view plus its snapshot coverage
    - Request / write plumbing for opening the browser and persisting
    toggles is in `codex-rs/tui/src/app/background_requests.rs` and
    `codex-rs/tui/src/chatwidget/hooks.rs`
    - Outside the TUI, the only behavioral change in this PR is threading
    `is_managed` through hook discovery and `hooks/list` so managed hooks
    render as non-toggleable
    - The `codex-rs/tui/src/status/snapshots/` churn is unrelated merge
    fallout from the stacked base branch's newer permission-label rendering
    
    ---------
    
    Co-authored-by: Codex <noreply@openai.com>
  • Remove core protocol dependency [2/2] (#20325)
    ## Why
    
    With the local model layer and app-server routing in place from PR1,
    this PR moves the active TUI runtime onto app-server notifications. The
    affected pieces share the same event flow, so the command surface,
    session state, bottom-pane prompts, chat rendering, history/status
    views, and tests move together to keep the stacked branch buildable.
    
    This PR also removes the obsolete compatibility surface that is no
    longer used after the migration. The proposed protocol-boundary verifier
    layer was dropped from the stack; enforcing that final boundary will be
    simpler once `codex-tui` no longer needs any `codex_protocol`
    references.
    
    This PR is part 2 of a 2-PR stack:
    
    1. Add TUI-owned replacement models and extract app-server event
    routing.
    2. Move the active TUI flow to app-server notifications and delete
    obsolete adapter code.
    
    ## What changed
    
    - Rewired app command and session handling to use app-server request and
    notification shapes.
    - Moved approval overlays, request-user-input flows, MCP elicitation,
    realtime events, and review commands onto the app-server-facing model
    surface.
    - Updated chat rendering, history cells, status views, multi-agent UI,
    replay state, and TUI tests to use app-server notifications plus the
    local models introduced in PR1.
    - Deleted `codex-rs/tui/src/app/app_server_adapter.rs` and the
    superseded `chatwidget/tests/background_events.rs` fixture path.
    
    ## Verification
    
    - `cargo check -p codex-tui --tests`
    - Top of stack: `cargo test -p codex-tui`
  • Remove core protocol dependency [1/2] (#20324)
    ## Why
    
    This stack moves `codex-tui` away from the core protocol event surface
    and toward app-server API shapes plus TUI-owned local models. This first
    PR sets up the lower-risk foundation: it introduces the local model
    surface and extracts app-server event routing into focused TUI modules
    while preserving the existing behavior for the larger migration in PR2.
    
    This PR is part 1 of a 2-PR stack:
    
    1. Add TUI-owned replacement models and extract app-server event
    routing.
    2. Move the active TUI flow to app-server notifications and delete
    obsolete adapter code.
    
    ## What changed
    
    - Added TUI-owned approval, diff, session state, session resume, token
    usage, and user-message models.
    - Added `app/app_server_event_targets.rs` and `app/app_server_events.rs`
    to hold app-server event targeting and dispatch logic outside `app.rs`.
    - Updated app/status tests to use the local model layer and added
    focused routing coverage.
    - Boxed a few large async TUI test futures so this base layer remains
    checkable without overflowing the default test stack.
    
    ## Verification
    
    - `cargo check -p codex-tui --tests`
  • Reduce the surface of collaboration modes (#20149)
    Collaboration modes were slightly invasive both into ThreadManager
    construction and ModelProvider
  • tui: use permission profiles for sandbox state (#20008)
    ## Summary
    - Move TUI permission state from legacy `SandboxPolicy` values to
    canonical `PermissionProfile` values across presets, app events, chat
    widget state, app commands, thread routing, and cached thread session
    state.
    - Keep app-server compatibility boundaries explicit: embedded sessions
    send `permissionProfile`, while remote sessions send only a legacy
    `sandbox` projection and fall back to read-only when a custom profile
    cannot be projected.
    - Update status/add-dir UI summaries and snapshots to render the active
    permission profile, including workspace profiles selected by the new
    built-in defaults.
    
    ## Verification
    - `rg '\bSandboxPolicy\b' codex-rs/tui -n` returns no matches.
    - `cargo test -p codex-tui`
    - `cargo check -p codex-tui --tests`
    - `cargo test -p codex-tui additional_dirs`
    - `just fmt`
    - `just fix -p codex-tui`
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    ---
    [//]: # (BEGIN SAPLING FOOTER)
    Stack created with [Sapling](https://sapling-scm.com). Best reviewed
    with [ReviewStack](https://reviewstack.dev/openai/codex/pull/20008).
    * #20041
    * #20040
    * #20037
    * #20035
    * #20034
    * #20033
    * #20032
    * #20030
    * #20028
    * #20027
    * #20026
    * #20024
    * #20021
    * #20018
    * #20016
    * #20015
    * #20013
    * #20011
    * #20010
    * __->__ #20008
  • feat(tui): add configurable keymap support (#18593)
    ## Why
    
    The TUI currently handles keyboard shortcuts as hard-coded event matches
    spread across app, composer, pager, list, approval, and navigation code.
    That makes shortcuts hard to customize, makes displayed hints easy to
    drift from actual behavior, and makes future keymap work riskier because
    there is no central action inventory.
    
    This PR adds the foundation for configurable, action-based keymaps
    without adding the interactive remapping UI yet. Onboarding
    intentionally stays on fixed startup shortcuts because users cannot
    reasonably configure keymaps before completing onboarding.
    
    This is PR1 in the keymap stack:
    
    - PR1: #18593: configurable keymap foundation
    - PR2: #18594: `/keymap` picker and guided remapping UI
    - PR3: #18595: Vim composer mode and the remap option
    
    ## Design Notes
    
    The new model resolves named actions into concrete runtime bindings once
    from config, then passes those bindings to the UI surfaces that handle
    input or render shortcut hints.
    
    The main concepts are:
    
    - **Context**: a scope where an action is active, such as `global`,
    `chat`, `composer`, `editor`, `pager`, `list`, or `approval`.
    - **Action**: a named operation inside a context, such as
    `global.open_transcript`, `composer.submit`, or `pager.close`.
    - **Binding**: one or more single-key shortcuts assigned to an action,
    written as config strings such as `ctrl-t`, `alt-backspace`, or
    `page-down`. Multi-step sequences such as `ctrl-x ctrl-s`, `g g`, or
    leader-key flows are not part of this PR.
    - **Resolution order**: context-specific config wins first, supported
    global fallbacks come next, and built-in defaults fill in anything
    unset.
    - **Explicit unbinding**: an empty array removes an action binding in
    that scope and does not fall through to a fallback binding.
    - **Conflict validation**: a resolved keymap rejects duplicate active
    bindings inside the same scope so one keypress cannot dispatch two
    actions.
    
    ## What Changed
    
    - Added `TuiKeymap` config support under `[tui.keymap]`, including typed
    contexts/actions, key alias normalization, generated schema coverage,
    and user-facing config errors.
    - Added `RuntimeKeymap` resolution in `codex-rs/tui/src/keymap.rs`,
    including fallback precedence, built-in defaults, explicit unbinding,
    and per-context conflict validation.
    - Rewired existing TUI handlers to consume resolved keymap actions
    instead of directly matching hard-coded keys in each component.
    - Updated key hint rendering and footer/pager/list surfaces so displayed
    shortcuts follow the resolved keymap.
    - Kept onboarding shortcuts fixed in
    `codex-rs/tui/src/onboarding/keys.rs` instead of exposing them through
    `[tui.keymap]`.
    
    ## Validation
    
    The branch includes focused coverage for config parsing, key
    normalization, runtime fallback resolution, explicit unbinding,
    duplicate-key conflict validation, default keymap consistency,
    onboarding startup key behavior, and UI hint snapshots affected by
    resolved key bindings.
  • permissions: centralize legacy sandbox projection (#19734)
    ## Why
    
    The remaining migration work still needs `SandboxPolicy` at a few
    compatibility boundaries, but those projections should come from one
    canonical path. Keeping ad hoc legacy projections scattered through
    app-server, CLI, and config code makes it easy for behavior to drift as
    `PermissionProfile` gains fidelity that the legacy enum cannot
    represent.
    
    ## What Changed
    
    - Adds `Permissions::legacy_sandbox_policy(cwd)` and
    `Config::legacy_sandbox_policy()` as the compatibility projection from
    the canonical `PermissionProfile`.
    - Adds `Permissions::can_set_legacy_sandbox_policy()` so legacy inputs
    are checked after they are converted into profile semantics.
    - Updates app-server command handling, Windows sandbox setup, session
    configuration, and sandbox summaries to use the centralized projection
    helper.
    - Leaves `SandboxPolicy` in place only for boundary inputs/outputs that
    still speak the legacy abstraction.
    
    ## Verification
    
    - `cargo check -p codex-config -p codex-core -p codex-sandboxing -p
    codex-app-server -p codex-cli -p codex-tui`
    - `cargo test -p codex-tui
    permissions_selection_history_snapshot_full_access_to_default --
    --nocapture`
    - `cargo test -p codex-tui
    permissions_selection_sends_approvals_reviewer_in_override_turn_context
    -- --nocapture`
    - `bazel test //codex-rs/tui:tui-unit-tests-bin
    --test_arg=permissions_selection_history_snapshot_full_access_to_default
    --test_output=errors`
    - `bazel test //codex-rs/tui:tui-unit-tests-bin
    --test_arg=permissions_selection_sends_approvals_reviewer_in_override_turn_context
    --test_output=errors`
    
    
    ---
    [//]: # (BEGIN SAPLING FOOTER)
    Stack created with [Sapling](https://sapling-scm.com). Best reviewed
    with [ReviewStack](https://reviewstack.dev/openai/codex/pull/19734).
    * #19737
    * #19736
    * #19735
    * __->__ #19734
  • fix(tui): reflow scrollback on terminal resize (#18575)
    Fixes multiple scrollback and terminal resize issues: #5538, #5576,
    #8352, #12223, #16165, and #15380.
    
    ## Why
    
    Codex writes finalized transcript output into terminal scrollback after
    wrapping it for the current viewport width. A later terminal resize
    could leave that scrollback shaped for the old width, so wider windows
    kept narrow output and narrower windows could show stale wrapping
    artifacts until enough new output replaced the visible area.
    
    This is also the foundation PR for responsive markdown tables. Table
    rendering needs finalized transcript content to be width-sensitive after
    insertion, not only while content is first streaming. Markdown table
    rendering itself stays in #18576.
    
    ## Stack
    
    - PR1: resize backlog reflow and interrupt cleanup
    - #18576: markdown table support
    
    ## What Changed
    
    - Rebuild source-backed transcript history when the terminal width
    changes. `terminal_resize_reflow` is introduced through the experimental
    feature system, but is enabled by default for this rollout so we can
    validate behavior across real terminals.
    - Preserve assistant and plan stream source so finalized streaming
    output can participate in resize reflow after consolidation.
    - Debounce resize work, but force a final source-backed reflow when a
    resize happened during active or unconsolidated streaming output.
    - Clear stale pending history lines on resize so old-width wrapped
    output is not emitted just before rebuilt scrollback.
    - Bound replay work with `[tui.terminal_resize_reflow].max_rows`:
    omitted uses terminal-specific defaults, `0` keeps all rendered rows,
    and a positive value sets an explicit cap. The cap applies both while
    initially replaying a resumed transcript into scrollback and when
    rebuilding scrollback after terminal resize.
    - Consolidate interrupted assistant streams before cleanup, then clear
    pending stream output and active-tail state consistently.
    - Move resize reflow and thread event buffering helpers out of `app.rs`
    into dedicated TUI modules.
    - Add focused coverage for resize reflow, feature-gated behavior,
    streaming source preservation, interrupted output cleanup,
    unicode-neutral text, terminal-specific row caps, and composer/layout
    stability.
    
    ## Runtime Bounds
    
    Resize reflow keeps only the most recent rendered rows when a row cap is
    active. The default is `auto`, which maps to the detected terminal's
    default scrollback size where Codex can identify it: VS Code `1000`,
    Windows Terminal `9001`, WezTerm `3500`, and Alacritty `10000`.
    Terminals without a dedicated mapping use the conservative fallback of
    `1000` rows. Users can override this with `[tui.terminal_resize_reflow]
    max_rows = N`, or set `max_rows = 0` to disable row limiting.
    
    ## Validation
    
    - `just fmt`
    - `git diff --check`
    - `cargo test --manifest-path codex-rs/Cargo.toml -p codex-tui reflow`
    - `cargo test --manifest-path codex-rs/Cargo.toml -p codex-tui
    transcript_reflow`
    - `just fix -p codex-tui`
    - PR CI in progress on the squashed branch
  • Add goal TUI UX (5 / 5) (#18077)
    Adds the TUI user experience for goals on top of the core runtime from
    PR 4.
    
    ## Why
    
    Users need a direct TUI control surface for long-running goals. The UI
    should make the current goal visible, support common goal actions
    without waiting for a model turn, and avoid confusing end-of-turn
    notifications while an active goal is immediately continuing.
    
    ## What changed
    
    - Added `/goal` summary rendering for the current goal, including
    active, paused, budget-limited, and complete states.
    - Added `/goal <objective>` creation/replacement through the app-server
    goal API rather than a model prompt.
    - Added `/goal clear`, `/goal pause`, and `/goal unpause` command
    variants.
    - Added a confirmation menu when the user enters a new goal while
    another goal already exists.
    - Updated `/goal` help and summary tip text so it reflects the supported
    command variants without advertising slash-command token budgets.
    - Added footer/statusline goal indicators, including elapsed time and
    token budget display when a budget exists from API/tool-created goals.
    - Consumes goal updated/cleared notifications so the TUI stays in sync
    with external app-server changes.
    - Suppresses end-of-turn desktop notifications only when a goal is still
    active and follow-up work is expected.
    - Preserves slash-command history behavior and avoids leaking queued
    `/goal` state into unrelated submissions.
    
    ## Verification
    
    - Added TUI unit and snapshot coverage for goal command availability,
    summary rendering, control commands, replacement menu behavior,
    status/footer display, notification handling, and command history.
  • permissions: make profiles represent enforcement (#19231)
    ## Why
    
    `PermissionProfile` is becoming the canonical permissions abstraction,
    but the old shape only carried optional filesystem and network fields.
    It could describe allowed access, but not who is responsible for
    enforcing it. That made `DangerFullAccess` and `ExternalSandbox` lossy
    when profiles were exported, cached, or round-tripped through app-server
    APIs.
    
    The important model change is that active permissions are now a disjoint
    union over the enforcement mode. Conceptually:
    
    ```rust
    pub enum PermissionProfile {
        Managed {
            file_system: FileSystemSandboxPolicy,
            network: NetworkSandboxPolicy,
        },
        Disabled,
        External {
            network: NetworkSandboxPolicy,
        },
    }
    ```
    
    This distinction matters because `Disabled` means Codex should apply no
    outer sandbox at all, while `External` means filesystem isolation is
    owned by an outside caller. Those are not equivalent to a broad managed
    sandbox. For example, macOS cannot nest Seatbelt inside Seatbelt, so an
    inner sandbox may require the outer Codex layer to use no sandbox rather
    than a permissive one.
    
    ## How Existing Modeling Maps
    
    Legacy `SandboxPolicy` remains a boundary projection, but it now maps
    into the higher-fidelity profile model:
    
    - `ReadOnly` and `WorkspaceWrite` map to `PermissionProfile::Managed`
    with restricted filesystem entries plus the corresponding network
    policy.
    - `DangerFullAccess` maps to `PermissionProfile::Disabled`, preserving
    the “no outer sandbox” intent instead of treating it as a lax managed
    sandbox.
    - `ExternalSandbox { network_access }` maps to
    `PermissionProfile::External { network }`, preserving external
    filesystem enforcement while still carrying the active network policy.
    - Split runtime policies that legacy `SandboxPolicy` cannot faithfully
    express, such as managed unrestricted filesystem plus restricted
    network, stay `Managed` instead of being collapsed into
    `ExternalSandbox`.
    - Per-command/session/turn grants remain partial overlays via
    `AdditionalPermissionProfile`; full `PermissionProfile` is reserved for
    complete active runtime permissions.
    
    ## What Changed
    
    - Change active `PermissionProfile` into a tagged union: `managed`,
    `disabled`, and `external`.
    - Keep partial permission grants separate with
    `AdditionalPermissionProfile` for command/session/turn overlays.
    - Represent managed filesystem permissions as either `restricted`
    entries or `unrestricted`; `glob_scan_max_depth` is non-zero when
    present.
    - Preserve old rollout compatibility by accepting the pre-tagged `{
    network, file_system }` profile shape during deserialization.
    - Preserve fidelity for important edge cases: `DangerFullAccess`
    round-trips as `disabled`, `ExternalSandbox` round-trips as `external`,
    and managed unrestricted filesystem + restricted network stays managed
    instead of being mistaken for external enforcement.
    - Preserve configured deny-read entries and bounded glob scan depth when
    full profiles are projected back into runtime policies, including
    unrestricted replacements that now become `:root = write` plus deny
    entries.
    - Regenerate the experimental app-server v2 JSON/TypeScript schema and
    update the `command/exec` README example for the tagged
    `permissionProfile` shape.
    
    ## Compatibility
    
    Legacy `SandboxPolicy` remains available at config/API boundaries as the
    compatibility projection. Existing rollout lines with the old
    `PermissionProfile` shape continue to load. The app-server
    `permissionProfile` field is experimental, so its v2 wire shape is
    intentionally updated to match the higher-fidelity model.
    
    ## Verification
    
    - `just write-app-server-schema`
    - `cargo check --tests`
    - `cargo test -p codex-protocol permission_profile`
    - `cargo test -p codex-protocol
    preserving_deny_entries_keeps_unrestricted_policy_enforceable`
    - `cargo test -p codex-app-server-protocol
    permission_profile_file_system_permissions`
    - `cargo test -p codex-app-server-protocol serialize_client_response`
    - `cargo test -p codex-core
    session_configured_reports_permission_profile_for_external_sandbox`
    - `just fix`
    - `just fix -p codex-protocol`
    - `just fix -p codex-app-server-protocol`
    - `just fix -p codex-core`
    - `just fix -p codex-app-server`
  • Rename approvals reviewer variant to auto-review (#19056)
    ## Why
    
    `approvals_reviewer` now uses `auto_review` as the canonical config/API
    value after #18504, but the Rust enum variant and nearby helper/test
    names still used `GuardianSubagent` / guardian approval wording. That
    made follow-up code and reviews confusing even though the external value
    had already moved to Auto-review.
    
    ## What changed
    
    - Renamed `ApprovalsReviewer::GuardianSubagent` to
    `ApprovalsReviewer::AutoReview`.
    - Updated protocol, app-server, config, core, TUI, exec, and analytics
    test callsites.
    - Renamed nearby helper/test names from guardian approval wording to
    Auto-review wording where they refer to the approvals reviewer mode.
    - Preserved wire compatibility:
      - `auto_review` remains the canonical serialized value.
      - `guardian_subagent` remains accepted as a legacy alias.
    
    This intentionally does not rename the `[features].guardian_approval`
    key, `Feature::GuardianApproval`, `core/src/guardian`, analytics event
    names, or app-server Guardian review event types.
    
    ## Verification
    
    - `cargo test -p codex-protocol
    approvals_reviewer_serializes_auto_review_and_accepts_legacy_guardian_subagent`
    - `cargo test -p codex-app-server-protocol
    approvals_reviewer_serializes_auto_review_and_accepts_legacy_guardian_subagent`
    - `cargo test -p codex-config approvals_reviewer`
    - `cargo test -p codex-tui update_feature_flags`
    - `cargo test -p codex-core permissions_instructions`
    - `cargo test -p codex-tui permissions_selection`
  • Move TUI app tests to modules they cover (#18799)
    ## Summary
    
    The TUI app refactor in #18753 moved the old `app.rs` tests into a
    single `app/tests.rs` file. That kept the split mechanically simple, but
    it left several focused unit tests far from the modules they exercise.
    
    This PR is a follow-up that moves tests next to the code they cover.
    
    It also adds `tui/src/app/test_support.rs` for shared fixture
    construction.
    
    This is just a mechanical refactoring (no functional changes) and does
    not affect any production code.
  • Refactor TUI app module into submodules (#18753)
    ## Why
    
    The TUI app module had grown past the 512K source-file cap enforced by
    CI/CD. This keeps the app entry point below that limit while preserving
    the existing runtime behavior and test surface.
    
    ## What changed
    
    - Kept the top-level `App` state and run-loop wiring in
    `tui/src/app.rs`.
    - Split app responsibilities into focused private submodules under
    `tui/src/app/`, covering event dispatch, thread routing, session
    lifecycle, config persistence, background requests, startup prompts,
    input, history UI, platform actions, and thread event buffering.
    - Moved the existing app-level tests into `tui/src/app/tests.rs` and
    reused the existing snapshot location rather than adding new tests or
    snapshots.
    - Added module header comments for `app.rs` and the new submodules.
    
    ## Follow-up
    
    A future cleanup can move narrow unit tests from `tui/src/app/tests.rs`
    into the specific app submodules they exercise. This PR keeps the
    existing app-level tests together so the refactor stays focused on the
    source-file split.
    
    ## Verification
    
    - `cargo test -p codex-tui --lib
    app::tests::agent_picker_item_name_snapshot`
    - `cargo test -p codex-tui --lib app::tests::clear_ui`
    - `cargo test -p codex-tui --lib
    app::tests::ctrl_l_clear_ui_after_long_transcript_reuses_clear_header_snapshot`
    - `just fix -p codex-tui`
    
    Full `cargo test -p codex-tui` still fails on model-catalog drift
    unrelated to this refactor, including stale
    `gpt-5.3-codex`/`gpt-5.1-codex` snapshot and migration expectations now
    resolving to `gpt-5.4`.
  • Use app server metadata for fork parent titles (#18632)
    ## Problem
    The TUI resolved fork parent titles from local CODEX_HOME metadata,
    which could show missing or stale titles when app-server metadata is
    authoritative.
    
    This is a lingering bug left over from the migration of the TUI to the
    app-server interface. I found it when I asked Codex to review all places
    where the TUI code was still directly accessing the local CODEX_HOME.
    
    ## Solution
    Route fork parent title metadata through the app-server session state
    and render only that supplied title, with focused snapshot coverage for
    stale local metadata.
    
    ## Testing
    I manually tested by renaming a thread then forking it and confirming
    that the "forked from" message indicated the parent thread's name.
  • Fix stale model test fixtures (#18719)
    Fixes stale test fixtures left after the active bundled model catalog
    updates in #18586 and #18388. Those changes made `gpt-5.4` the current
    default and removed several older hardcoded slugs, which left Windows
    Bazel shards failing TUI and config tests.
    
    What changed:
    - Refresh TUI model migration, availability NUX, plan-mode, status, and
    snapshot fixtures to use active bundled model slugs.
    - Update the config edit test expectation for the TOML-quoted
    `"gpt-5.2"` migration key.
    - Move the model catalog tests into
    `codex-rs/tui/src/app/tests/model_catalog.rs` so touching them does not
    trip the blob-size policy for `app.rs`.
    
    Verification:
    - CI Bazel/lint checks are expected to cover the affected test shards.
  • Surface TUI skills refresh failures (#18627)
    ## Why
    
    `skills/list` refreshes are best-effort metadata updates. If one fails
    during startup or thread switching, the TUI should keep running and show
    enough detail to diagnose the app-server failure instead of leaving the
    user with only a log entry.
    
    This addresses the recoverability and observability issue reported in
    #16914.
    
    ## What Changed
    
    - Preserve the full startup `skills/list` error chain before sending it
    back through the app event queue.
    - Surface failed skills refreshes as recoverable TUI error messages
    while still logging the warning.
    
    This is related to the recent bug fix from [PR
    #18370](https://github.com/openai/codex/pull/18370).
  • Remove simple TUI legacy_core reexports (#18631)
    ## Problem
    The TUI still imported path utilities and config-loader symbols through
    app-server-client's legacy_core facade even though those APIs already
    exist in utility/config crates. This is part of our ongoing effort to
    whittle away at these old dependencies.
    
    ## Solution
    Rewire imports to avoid the TUI directly importing from the core crate
    and instead import from common lower-level crates. This PR doesn't
    include any functional changes; it's just a simple rewiring.