Commit Graph

57 Commits

  • [hooks] use a user message > developer message for prompt continuation (#14867)
    ## Summary
    
    Persist Stop-hook continuation prompts as `user` messages instead of
    hidden `developer` messages + some requested integration tests
    
    This is a followup to @pakrym 's comment in
    https://github.com/openai/codex/pull/14532 to make sure stop-block
    continuation prompts match training for turn loops
    
    - Stop continuation now writes `<hook_prompt hook_run_id="...">stop
    hook's user prompt<hook_prompt>`
    - Introduces quick-xml dependency, though we already indirectly depended
    on it anyway via syntect
    - This PR only has about 500 lines of actual logic changes, the rest is
    tests/schema
    
    ## Testing
    
    Example run (with a sessionstart hook and 3 stop hooks) - this shows
    context added by session start, then two stop hooks sending their own
    additional prompts in a new turn. The model responds with a single
    message addressing both. Then when that turn ends, the hooks detect that
    they just ran using `stop_hook_active` and decide not to infinite loop
    
    test files for this (unzip, move codex -> .codex):
    [codex.zip](https://github.com/user-attachments/files/26075806/codex.zip)
    
    ```
    › cats
    
    
    • Running SessionStart hook: lighting the observatory
    
    SessionStart hook (completed)
      warning: Hi, I'm a session start hook for wizard-tower (startup).
      hook context: A wimboltine stonpet is an exotic cuisine from hyperspace
    
    • Cats are tiny zen wizards, my friend: equal parts nap, mystery, and chaos. If you want, we can talk
      cat facts, cat breeds, cat names, or build something cat-themed in this repo.
    
    • Running Stop hook: checking the tower wards
    
    • Running Stop hook: sacking the guards
    
    • Running Stop hook: hiring the guards
    
    Stop hook (completed)
      warning: Wizard Tower Stop hook reviewed the completed reply (177 chars).
    
    Stop hook (blocked)
      warning: Wizard Tower Stop hook continuing conversation
      feedback: cook the stonpet
    
    Stop hook (blocked)
      warning: Wizard Tower Stop hook continuing conversation
      feedback: eat the cooked stonpet
    
    • Stonpet’s cooked, aloha style: flash-seared over a blue quasiflame, glazed with nebula salt, and
      rested until the hyperspace juices settle.
    
      Now we eat with gratitude, my friend. One mindful bite in, and the flavor is pure cosmic surf:
      smoky, bright, and totally out of this dimension.
    
    • Running Stop hook: checking the tower wards
    
    • Running Stop hook: sacking the guards
    
    • Running Stop hook: hiring the guards
    
    Stop hook (completed)
      warning: Wizard Tower Stop hook reviewed the completed reply (285 chars).
    
    Stop hook (completed)
      warning: Wizard Tower Stop hook saw a second pass and stayed calm to avoid a loop.
    
    Stop hook (completed)
      warning: Wizard Tower Stop hook saw a second pass and stayed calm to avoid a loop.
    ```
  • Prefer websockets when providers support them (#13592)
    Remove all flags and model settings.
    
    ---------
    
    Co-authored-by: Codex <noreply@openai.com>
  • Add openai_base_url config override for built-in provider (#12031)
    We regularly get bug reports from users who mistakenly have the
    `OPENAI_BASE_URL` environment variable set. This PR deprecates this
    environment variable in favor of a top-level config key
    `openai_base_url` that is used for the same purpose. By making it a
    config key, it will be more visible to users. It will also participate
    in all of the infrastructure we've added for layered and managed
    configs.
    
    Summary
    - introduce the `openai_base_url` top-level config key, update
    schema/tests, and route the built-in openai provider through it while
    - fall back to deprecated `OPENAI_BASE_URL` env var but warn user of
    deprecation when no `openai_base_url` config key is present
    - update CLI, SDK, and TUI code to prefer the new config path (with a
    deprecated env-var fallback) and document the SDK behavior change
  • Add Smart Approvals guardian review across core, app-server, and TUI (#13860)
    ## Summary
    - add `approvals_reviewer = "user" | "guardian_subagent"` as the runtime
    control for who reviews approval requests
    - route Smart Approvals guardian review through core for command
    execution, file changes, managed-network approvals, MCP approvals, and
    delegated/subagent approval flows
    - expose guardian review in app-server with temporary unstable
    `item/autoApprovalReview/{started,completed}` notifications carrying
    `targetItemId`, `review`, and `action`
    - update the TUI so Smart Approvals can be enabled from `/experimental`,
    aligned with the matching `/approvals` mode, and surfaced clearly while
    reviews are pending or resolved
    
    ## Runtime model
    This PR does not introduce a new `approval_policy`.
    
    Instead:
    - `approval_policy` still controls when approval is needed
    - `approvals_reviewer` controls who reviewable approval requests are
    routed to:
      - `user`
      - `guardian_subagent`
    
    `guardian_subagent` is a carefully prompted reviewer subagent that
    gathers relevant context and applies a risk-based decision framework
    before approving or denying the request.
    
    The `smart_approvals` feature flag is a rollout/UI gate. Core runtime
    behavior keys off `approvals_reviewer`.
    
    When Smart Approvals is enabled from the TUI, it also switches the
    current `/approvals` settings to the matching Smart Approvals mode so
    users immediately see guardian review in the active thread:
    - `approval_policy = on-request`
    - `approvals_reviewer = guardian_subagent`
    - `sandbox_mode = workspace-write`
    
    Users can still change `/approvals` afterward.
    
    Config-load behavior stays intentionally narrow:
    - plain `smart_approvals = true` in `config.toml` remains just the
    rollout/UI gate and does not auto-set `approvals_reviewer`
    - the deprecated `guardian_approval = true` alias migration does
    backfill `approvals_reviewer = "guardian_subagent"` in the same scope
    when that reviewer is not already configured there, so old configs
    preserve their original guardian-enabled behavior
    
    ARC remains a separate safety check. For MCP tool approvals, ARC
    escalations now flow into the configured reviewer instead of always
    bypassing guardian and forcing manual review.
    
    ## Config stability
    The runtime reviewer override is stable, but the config-backed
    app-server protocol shape is still settling.
    
    - `thread/start`, `thread/resume`, and `turn/start` keep stable
    `approvalsReviewer` overrides
    - the config-backed `approvals_reviewer` exposure returned via
    `config/read` (including profile-level config) is now marked
    `[UNSTABLE]` / experimental in the app-server protocol until we are more
    confident in that config surface
    
    ## App-server surface
    This PR intentionally keeps the guardian app-server shape narrow and
    temporary.
    
    It adds generic unstable lifecycle notifications:
    - `item/autoApprovalReview/started`
    - `item/autoApprovalReview/completed`
    
    with payloads of the form:
    - `{ threadId, turnId, targetItemId, review, action? }`
    
    `review` is currently:
    - `{ status, riskScore?, riskLevel?, rationale? }`
    - where `status` is one of `inProgress`, `approved`, `denied`, or
    `aborted`
    
    `action` carries the guardian action summary payload from core when
    available. This lets clients render temporary standalone pending-review
    UI, including parallel reviews, even when the underlying tool item has
    not been emitted yet.
    
    These notifications are explicitly documented as `[UNSTABLE]` and
    expected to change soon.
    
    This PR does **not** persist guardian review state onto `thread/read`
    tool items. The intended follow-up is to attach guardian review state to
    the reviewed tool item lifecycle instead, which would improve
    consistency with manual approvals and allow thread history / reconnect
    flows to replay guardian review state directly.
    
    ## TUI behavior
    - `/experimental` exposes the rollout gate as `Smart Approvals`
    - enabling it in the TUI enables the feature and switches the current
    session to the matching Smart Approvals `/approvals` mode
    - disabling it in the TUI clears the persisted `approvals_reviewer`
    override when appropriate and returns the session to default manual
    review when the effective reviewer changes
    - `/approvals` still exposes the reviewer choice directly
    - the TUI renders:
    - pending guardian review state in the live status footer, including
    parallel review aggregation
      - resolved approval/denial state in history
    
    ## Scope notes
    This PR includes the supporting core/runtime work needed to make Smart
    Approvals usable end-to-end:
    - shell / unified-exec / apply_patch / managed-network / MCP guardian
    review
    - delegated/subagent approval routing into guardian review
    - guardian review risk metadata and action summaries for app-server/TUI
    - config/profile/TUI handling for `smart_approvals`, `guardian_approval`
    alias migration, and `approvals_reviewer`
    - a small internal cleanup of delegated approval forwarding to dedupe
    fallback paths and simplify guardian-vs-parent approval waiting (no
    intended behavior change)
    
    Out of scope for this PR:
    - redesigning the existing manual approval protocol shapes
    - persisting guardian review state onto app-server `ThreadItem`s
    - delegated MCP elicitation auto-review (the current delegated MCP
    guardian shim only covers the legacy `RequestUserInput` path)
    
    ---------
    
    Co-authored-by: Codex <noreply@openai.com>
  • chore: add web_search_tool_type for image support (#13538)
    add `web_search_tool_type` on model_info that can be populated from
    backend. will be used to filter which models can use `web_search` with
    images and which cant.
    
    added small unit test.
  • Add under-development original-resolution view_image support (#13050)
    ## Summary
    
    Add original-resolution support for `view_image` behind the
    under-development `view_image_original_resolution` feature flag.
    
    When the flag is enabled and the target model is `gpt-5.3-codex` or
    newer, `view_image` now preserves original PNG/JPEG/WebP bytes and sends
    `detail: "original"` to the Responses API instead of using the legacy
    resize/compress path.
    
    ## What changed
    
    - Added `view_image_original_resolution` as an under-development feature
    flag.
    - Added `ImageDetail` to the protocol models and support for serializing
    `detail: "original"` on tool-returned images.
    - Added `PromptImageMode::Original` to `codex-utils-image`.
      - Preserves original PNG/JPEG/WebP bytes.
      - Keeps legacy behavior for the resize path.
    - Updated `view_image` to:
    - use the shared `local_image_content_items_with_label_number(...)`
    helper in both code paths
      - select original-resolution mode only when:
        - the feature flag is enabled, and
        - the model slug parses as `gpt-5.3-codex` or newer
    - Kept local user image attachments on the existing resize path; this
    change is specific to `view_image`.
    - Updated history/image accounting so only `detail: "original"` images
    use the docs-based GPT-5 image cost calculation; legacy images still use
    the old fixed estimate.
    - Added JS REPL guidance, gated on the same feature flag, to prefer JPEG
    at 85% quality unless lossless is required, while still allowing other
    formats when explicitly requested.
    - Updated tests and helper code that construct
    `FunctionCallOutputContentItem::InputImage` to carry the new `detail`
    field.
    
    ## Behavior
    
    ### Feature off
    - `view_image` keeps the existing resize/re-encode behavior.
    - History estimation keeps the existing fixed-cost heuristic.
    
    ### Feature on + `gpt-5.3-codex+`
    - `view_image` sends original-resolution images with `detail:
    "original"`.
    - PNG/JPEG/WebP source bytes are preserved when possible.
    - History estimation uses the GPT-5 docs-based image-cost calculation
    for those `detail: "original"` images.
    
    
    #### [git stack](https://github.com/magus/git-stack-cli)
    - 👉 `1` https://github.com/openai/codex/pull/13050
    -  `2` https://github.com/openai/codex/pull/13331
    -  `3` https://github.com/openai/codex/pull/13049
  • add fast mode toggle (#13212)
    - add a local Fast mode setting in codex-core (similar to how model id
    is currently stored on disk locally)
    - send `service_tier=priority` on requests when Fast is enabled
    - add `/fast` in the TUI and persist it locally
    - feature flag
  • Add model availability NUX metadata (#12972)
    - replace show_nux with structured availability_nux model metadata
    - expose availability NUX data through the app-server model API
    - update shared fixtures and tests for the new field
  • Allow clients not to send summary as an option (#12950)
    Summary is a required parameter on UserTurn. Ideally we'd like the core
    to decide the appropriate summary level.
    
    Make the summary optional and don't send it when not needed.
  • Use model catalog default for reasoning summary fallback (#12873)
    ## Summary
    - make `Config.model_reasoning_summary` optional so unset means use
    model default
    - resolve the optional config value to a concrete summary when building
    `TurnContext`
    - add protocol support for `default_reasoning_summary` in model metadata
    
    ## Validation
    - `cargo test -p codex-core --lib client::tests -- --nocapture`
    
    ---------
    
    Co-authored-by: Codex <noreply@openai.com>
  • make 5.3-codex visible in cli for api users (#12808)
    5.3-codex released in api, mark it visible for API users via bundled
    `models.json`.
  • fix: also try matching namespaced prefix for modelinfo candidate (#12658)
    #### What
    Try matching `\w+`-namespaced model after `longest prefix` as heuristic
    to match `ModelInfo` from list of candidates.
    
    This shouldn't regress existing behavior:
    - `gpt-5.2-codex` -> `gpt-5.2` if `gpt-5.2-codex` not present
    - `gpt-5.3` -> `gpt-5` if `gpt-5.3` not present
    - `gpt-9` still doesn't match anything
    
    while being more forgiving for custom prefixes:
    - `oai/gpt-5.3-codex` -> `gpt-5.3-codex`
    
    #### Tests
    Added unit test.
  • chore: rm hardcoded PRESETS list (#12650)
    rm `PRESETS` list harcoded in `model_presets` as we now have bundled
    `models.json` with equivalent info.
    
    update logic to rely on bundled models instead, update tests.
  • chore: remove codex-core public protocol/shell re-exports (#12432)
    ## Why
    
    `codex-rs/core/src/lib.rs` re-exported a broad set of types and modules
    from `codex-protocol` and `codex-shell-command`. That made it easy for
    workspace crates to import those APIs through `codex-core`, which in
    turn hides dependency edges and makes it harder to reduce compile-time
    coupling over time.
    
    This change removes those public re-exports so call sites must import
    from the source crates directly. Even when a crate still depends on
    `codex-core` today, this makes dependency boundaries explicit and
    unblocks future work to drop `codex-core` dependencies where possible.
    
    ## What Changed
    
    - Removed public re-exports from `codex-rs/core/src/lib.rs` for:
    - `codex_protocol::protocol` and related protocol/model types (including
    `InitialHistory`)
      - `codex_protocol::config_types` (`protocol_config_types`)
    - `codex_shell_command::{bash, is_dangerous_command, is_safe_command,
    parse_command, powershell}`
    - Migrated workspace Rust call sites to import directly from:
      - `codex_protocol::protocol`
      - `codex_protocol::config_types`
      - `codex_protocol::models`
      - `codex_shell_command`
    - Added explicit `Cargo.toml` dependencies (`codex-protocol` /
    `codex-shell-command`) in crates that now import those crates directly.
    - Kept `codex-core` internal modules compiling by using `pub(crate)`
    aliases in `core/src/lib.rs` (internal-only, not part of the public
    API).
    - Updated the two utility crates that can already drop a `codex-core`
    dependency edge entirely:
      - `codex-utils-approval-presets`
      - `codex-utils-cli`
    
    ## Verification
    
    - `cargo test -p codex-utils-approval-presets`
    - `cargo test -p codex-utils-cli`
    - `cargo check --workspace --all-targets`
    - `just clippy`
  • chore: rm remote models fflag (#11699)
    rm `remote_models` feature flag.
    
    We see issues like #11527 when a user has `remote_models` disabled, as
    we always use the default fallback `ModelInfo`. This causes issues with
    model performance.
    
    Builds on #11690, which helps by warning the user when they are using
    the default fallback. This PR will make that happen much less frequently
    as an accidental consequence of disabling `remote_models`.
  • fix: show user warning when using default fallback metadata (#11690)
    ### What
    It's currently unclear when the harness falls back to the default,
    generic `ModelInfo`. This happens when the `remote_models` feature is
    disabled or the model is truly unknown, and can lead to bad performance
    and issues in the harness.
    
    Add a user-facing warning when this happens so they are aware when their
    setup is broken.
    
    ### Tests
    Added tests, tested locally.
  • feat: introduce Permissions (#11633)
    ## Why
    We currently carry multiple permission-related concepts directly on
    `Config` for shell/unified-exec behavior (`approval_policy`,
    `sandbox_policy`, `network`, `shell_environment_policy`,
    `windows_sandbox_mode`).
    
    Consolidating these into one in-memory struct makes permission handling
    easier to reason about and sets up the next step: supporting named
    permission profiles (`[permissions.PROFILE_NAME]`) without changing
    behavior now.
    
    This change is mostly mechanical: it updates existing callsites to go
    through `config.permissions`, but it does not yet refactor those
    callsites to take a single `Permissions` value in places where multiple
    permission fields are still threaded separately.
    
    This PR intentionally **does not** change the on-disk `config.toml`
    format yet and keeps compatibility with legacy config keys.
    
    ## What Changed
    - Introduced `Permissions` in `core/src/config/mod.rs`.
    - Added `Config::permissions` and moved effective runtime permission
    fields under it:
      - `approval_policy`
      - `sandbox_policy`
      - `network`
      - `shell_environment_policy`
      - `windows_sandbox_mode`
    - Updated config loading/building so these effective values are still
    derived from the same existing config inputs and constraints.
    - Updated Windows sandbox helpers/resolution to read/write via
    `permissions`.
    - Threaded the new field through all permission consumers across core
    runtime, app-server, CLI/exec, TUI, and sandbox summary code.
    - Updated affected tests to reference `config.permissions.*`.
    - Renamed the struct/field from
    `EffectivePermissions`/`effective_permissions` to
    `Permissions`/`permissions` and aligned variable naming accordingly.
    
    ## Verification
    - `just fix -p codex-core -p codex-tui -p codex-cli -p codex-app-server
    -p codex-exec -p codex-utils-sandbox-summary`
    - `cargo build -p codex-core -p codex-tui -p codex-cli -p
    codex-app-server -p codex-exec -p codex-utils-sandbox-summary`
  • fix(core) model_info preserves slug (#11602)
    ## Summary
    Preserve the specified model slug when we get a prefix-based match
    
    ## Testing
    - [x] added unit test
    
    ---------
    
    Co-authored-by: Ahmed Ibrahim <aibrahim@openai.com>
  • Remove test-support feature from codex-core and replace it with explicit test toggles (#11405)
    ## Why
    
    `codex-core` was being built in multiple feature-resolved permutations
    because test-only behavior was modeled as crate features. For a large
    crate, those permutations increase compile cost and reduce cache reuse.
    
    ## Net Change
    
    - Removed the `test-support` crate feature and related feature wiring so
    `codex-core` no longer needs separate feature shapes for test consumers.
    - Standardized cross-crate test-only access behind
    `codex_core::test_support`.
    - External test code now imports helpers from
    `codex_core::test_support`.
    - Underlying implementation hooks are kept internal (`pub(crate)`)
    instead of broadly public.
    
    ## Outcome
    
    - Fewer `codex-core` build permutations.
    - Better incremental cache reuse across test targets.
    - No intended production behavior change.
  • Prefer websocket transport when model opts in (#11386)
    Summary
    - add a `prefer_websockets` field to `ModelInfo`, defaulting to `false`
    in all fixtures and constructors
    - wire the new flag into websocket selection so models that opt in
    always use websocket transport even when the feature gate is off
    
    Testing
    - Not run (not requested)
  • test(core): stabilize ARM bazel remote-model and parallelism tests (#11330)
    ## Summary
    - keep wiremock MockServer handles alive through async assertions in
    remote model suite tests
    - assert /models request count in remote_models_hide_picker_only_models
    - use a slightly higher parallel timing threshold on aarch64 while
    keeping existing x86 threshold
    
    ## Validation
    - just fmt
    - targeted tests:
    - cargo test -p codex-core --test all
    suite::remote_models::remote_models_merge_replaces_overlapping_model --
    --exact
    - cargo test -p codex-core --test all
    suite::remote_models::remote_models_hide_picker_only_models -- --exact
    - cargo test -p codex-core --test all
    suite::tool_parallelism::shell_tools_run_in_parallel -- --exact
    - soak loop: 40 iterations of all three targeted tests
    
    ## Notes
    - cargo test -p codex-core has one unrelated local-env failure in
    shell_snapshot::tests::try_new_creates_and_deletes_snapshot_file from
    exported certificate env content in this workspace.
    - local bazel test //codex-rs/core:core-all-test failed to build due
    missing rust-objcopy in this host toolchain.
  • Use longest remote model prefix matching (#11228)
    Match model metadata by longest matching remote slug prefix before local
    fallback.
    
    - Update `get_model_info` to prefer the most specific remote slug prefix
    for the requested model.
    - Add an integration test to assert `gpt-5.3-codex-test` resolves to
    `gpt-5.3-codex` over `gpt-5.3`.
  • [Codex][CLI] Gate image inputs by model modalities (#10271)
    ###### Summary
    
    - Add input_modalities to model metadata so clients can determine
    supported input types.
    - Gate image paste/attach in TUI when the selected model does not
    support images.
    - Block submits that include images for unsupported models and show a
    clear warning.
    - Propagate modality metadata through app-server protocol/model-list
    responses.
      - Update related tests/fixtures.
    
      ###### Rationale
    
      - Models support different input modalities.
    - Clients need an explicit capability signal to prevent unsupported
    requests.
    - Backward-compatible defaults preserve existing behavior when modality
    metadata is absent.
    
      ###### Scope
    
      - codex-rs/protocol, codex-rs/core, codex-rs/tui
      - codex-rs/app-server-protocol, codex-rs/app-server
      - Generated app-server types / schema fixtures
    
      ###### Trade-offs
    
    - Default behavior assumes text + image when field is absent for
    compatibility.
      - Server-side validation remains the source of truth.
    
      ###### Follow-up
    
    - Non-TUI clients should consume input_modalities to disable unsupported
    attachments.
    - Model catalogs should explicitly set input_modalities for text-only
    models.
    
      ###### Testing
    
      - cargo fmt --all
      - cargo test -p codex-tui
      - env -u GITHUB_APP_KEY cargo test -p codex-core --lib
      - just write-app-server-schema
    - cargo run -p codex-cli --bin codex -- app-server generate-ts --out
    app-server-types
      - test against local backend
      
    <img width="695" height="199" alt="image"
    src="https://github.com/user-attachments/assets/d22dd04f-5eba-4db9-a7c5-a2506f60ec44"
    />
    
    ---------
    
    Co-authored-by: Josh McKinney <joshka@openai.com>
  • chore(personality) new schema with fallbacks (#10147)
    ## Summary
    Let's dial in this api contract in a bit more with more robust fallback
    behavior when model_instructions_template is false.
    
    Switches to a more explicit template / variables structure, with more
    fallbacks.
    
    ## Testing
    - [x] Adding unit tests
    - [x] Tested locally
  • remove sandbox globals. (#9797)
    Threads sandbox updates through OverrideTurnContext for active turn
    Passes computed sandbox type into safety/exec
  • feat(core) update Personality on turn (#9644)
    ## Summary
    Support updating Personality mid-Thread via UserTurn/OverwriteTurn. This
    is explicitly unused by the clients so far, to simplify PRs - app-server
    and tui implementations will be follow-ups.
    
    ## Testing
    - [x] added integration tests
  • feat(core) ModelInfo.model_instructions_template (#9597)
    ## Summary
    #9555 is the start of a rename, so I'm starting to standardize here.
    Sets up `model_instructions` templating with a strongly-typed object for
    injecting a personality block into the model instructions.
    
    ## Testing
    - [x] Added tests
    - [x] Ran locally
  • merge remote models (#9547)
    We have `models.json` and `/models` response
    Behavior:
    1. New models from models endpoint gets added
    2. Shared models get replaced by remote ones
    3. Existing models in `models.json` but not `/models` are kept
    4. Mark highest priority as default
  • fix(core) Preserve base_instructions in SessionMeta (#9427)
    ## Summary
    This PR consolidates base_instructions onto SessionMeta /
    SessionConfiguration, so we ensure `base_instructions` is set once per
    session and should be (mostly) immutable, unless:
    - overridden by config on resume / fork
    - sub-agent tasks, like review or collab
    
    
    In a future PR, we should convert all references to `base_instructions`
    to consistently used the typed struct, so it's less likely that we put
    other strings there. See #9423. However, this PR is already quite
    complex, so I'm deferring that to a follow-up.
    
    ## Testing
    - [x] Added a resume test to assert that instructions are preserved. In
    particular, `resume_switches_models_preserves_base_instructions` fails
    against main.
    
    Existing test coverage thats assert base instructions are preserved
    across multiple requests in a session:
    - Manual compact keeps baseline instructions:
    core/tests/suite/compact.rs:199
    - Auto-compact keeps baseline instructions:
    core/tests/suite/compact.rs:1142
    - Prompt caching reuses the same instructions across two requests:
    core/tests/suite/prompt_caching.rs:150 and
    core/tests/suite/prompt_caching.rs:157
    - Prompt caching with explicit expected string across two requests:
    core/tests/suite/prompt_caching.rs:213 and
    core/tests/suite/prompt_caching.rs:222
    - Resume with model switch keeps original instructions:
    core/tests/suite/resume.rs:136
    - Compact/resume/fork uses request 0 instructions for later expected
    payloads: core/tests/suite/compact_resume_fork.rs:215
  • Add text element metadata to types (#9235)
    Initial type tweaking PR to make the diff of
    https://github.com/openai/codex/pull/9116 smaller
    
    This should not change any behavior, just adds some fields to types
  • clean models manager (#9168)
    Have only the following Methods:
    - `list_models`: getting current available models
    - `try_list_models`: sync version no refresh for tui use
    - `get_default_model`: get the default model (should be tightened to
    core and received on session configuration)
    - `get_model_info`: get `ModelInfo` for a specific model (should be
    tightened to core but used in tests)
    - `refresh_if_new_etag`: trigger refresh on different etags
    
    Also move the cache to its own struct
  • Refactor remote models tests to use TestCodex builder (#8940)
    - add `with_model_provider` to the test codex builder
    - replace the bespoke remote models harness with `TestCodex` in
    `remote_models` tests
  • Add 5s timeout to models list call + integration test (#8942)
    - Enforce a 5s timeout around the remote models refresh to avoid hanging
    /models calls.
  • Override truncation policy at model info level (#8856)
    We used to override truncation policy by comparing model info vs config
    value in context manager. A better way to do it is to construct model
    info using the config value
  • Merge Modelfamily into modelinfo (#8763)
    - Merge ModelFamily into ModelInfo
    - Remove logic for adding instructions to apply patch
    - Add compaction limit and visible context window to `ModelInfo`
  • chore: unify conversation with thread name (#8830)
    Done and verified by Codex + refactor feature of RustRover
  • Enable model upgrade popup even when selected model is no longer in picker (#8802)
    With `config.toml`:
    ```
    model = "gpt-5.1-codex"
    ```
    (where `gpt-5.1-codex` has `show_in_picker: false` in
    [`model_presets.rs`](https://github.com/openai/codex/blob/main/codex-rs/core/src/models_manager/model_presets.rs);
    this happens if the user hasn't used codex in a while so they didn't see
    the popup before their model was changed to `show_in_picker: false`)
    
    The upgrade picker used to not show (because `gpt-5.1-codex` was
    filtered out of the model list in code). Now, the filtering is done
    downstream in tui and app-server, so the model upgrade popup shows:
    
    <img width="1503" height="227" alt="Screenshot 2026-01-06 at 5 04 37 PM"
    src="https://github.com/user-attachments/assets/26144cc2-0b3f-4674-ac17-e476781ec548"
    />
  • feat: agent controller (#8783)
    Added an agent control plane that lets sessions spawn or message other
    conversations via `AgentControl`.
    
    `AgentBus` (core/src/agent/bus.rs) keeps track of the last known status
    of a conversation.
    
    ConversationManager now holds shared state behind an Arc so AgentControl
    keeps only a weak back-reference, the goal is just to avoid explicit
    cycle reference.
    
    Follow-ups:
    * Build a small tool in the TUI to be able to see every agent and send
    manual message to each of them
    * Handle approval requests in this TUI
    * Add tools to spawn/communicate between agents (see related design)
    * Define agent types
  • Refresh on models etag mismatch (#8491)
    - Send models etag
    - Refresh models on 412
    - This wires `ModelsManager` to `ModelFamily` so we don't mutate it
    mid-turn
  • Remove reasoning format (#8484)
    This isn't very useful parameter. 
    
    logic:
    ```
    if model puts `**` in their reasoning, trim it and visualize the header.
    if couldn't trim: don't render
    if model doesn't support: don't render
    ```
    
    We can simplify to:
    ```
    if could trim, visualize header.
    if not, don't render
    ```
  • remove minimal client version (#8447)
    This isn't needed value by client
  • Rename OpenAI models to models manager (#8346)
    # External (non-OpenAI) Pull Request Requirements
    
    Before opening this Pull Request, please read the dedicated
    "Contributing" markdown file or your PR may be closed:
    https://github.com/openai/codex/blob/main/docs/contributing.md
    
    If your PR conforms to our contribution guidelines, replace this text
    with a detailed and high quality description of your changes.
    
    Include a link to a bug report or enhancement request.
  • chore: migrate from Config::load_from_base_config_with_overrides to ConfigBuilder (#8276)
    https://github.com/openai/codex/pull/8235 introduced `ConfigBuilder` and
    this PR updates all call non-test call sites to use it instead of
    `Config::load_from_base_config_with_overrides()`.
    
    This is important because `load_from_base_config_with_overrides()` uses
    an empty `ConfigRequirements`, which is a reasonable default for testing
    so the tests are not influenced by the settings on the host. This method
    is now guarded by `#[cfg(test)]` so it cannot be used by business logic.
    
    Because `ConfigBuilder::build()` is `async`, many of the test methods
    had to be migrated to be `async`, as well. On the bright side, this made
    it possible to eliminate a bunch of `block_on_future()` stuff.
  • caribou (#8265)
    Welcome caribou
    
    <img width="1536" height="1024" alt="image"
    src="https://github.com/user-attachments/assets/2a67b21f-40cf-4518-aee4-691af331ab50"
    />
  • feat: model picker (#8209)
    # External (non-OpenAI) Pull Request Requirements
    
    Before opening this Pull Request, please read the dedicated
    "Contributing" markdown file or your PR may be closed:
    https://github.com/openai/codex/blob/main/docs/contributing.md
    
    If your PR conforms to our contribution guidelines, replace this text
    with a detailed and high quality description of your changes.
    
    Include a link to a bug report or enhancement request.