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• [codex] parallelize release code generation (#27702)

  The release profile still uses one codegen unit, which serializes LLVM
  code generation within each crate. That setting was selected alongside
  fat LTO for optimization quality and binary size, but releases now use
  ThinLTO and code generation dominates the critical-path build.
  
  Use four codegen units. On an Apple M4 Max with 16 cores and 128 GiB
  RAM, using rustc 1.96.0, four and eight units took 507.486 and 505.325
  seconds respectively. Four therefore keeps the build-time gain while
  limiting the stripped `codex` increase to 14.7%, compared with 21.5% at
  eight units. The gzip-compressed binary grows 7.8% at four units.
  
  The one-unit build from an empty target directory took 981.150 seconds.
  That comparison also populated dependency and native build caches, so it
  is directional rather than controlled. It agrees with the earlier clean
  matrix where eight units reduced 671 seconds to 303 seconds:
  https://gist.github.com/anp/4b88393a0acd35783d9f42156f3243d5
  
  At the local 48% reduction, the current release's 55m22s critical-path
  macOS Cargo step would save about 26 minutes from the 71m28s workflow:
  https://github.com/openai/codex/actions/runs/27367405663
  
  The prompt-image medians ranged from 3.9% faster to 0.9% slower. CLI
  startup shifted by 1-2 ms while user and system CPU time were unchanged.
  
  This is a draft because the release-latency improvement may not justify
  the binary-size increase.

  Tamir Duberstein · 2026-06-11 19:44:36 -07:00
  e23d4df4ff
• ci(v8): gate Windows source builds on relevant changes (#27715)

  Avoid rebuilding sandboxed Windows MSVC V8 artifacts for unrelated
  changes to `codex-rs/Cargo.toml`.
  
  The V8 canary now compares the resolved V8 version between the base and
  head commits and only runs the Windows source-build matrix when:
  
  - the resolved V8 crate version changes;
  - Windows artifact-production scripts or workflows change; or
  - the workflow is manually dispatched.
  
  The existing Bazel V8 matrix is unchanged.
  
  ## Why
  
  The Windows MSVC source builds take roughly two to three hours and
  currently run whenever any entry in the broad `v8-canary` path filter
  changes.

  Channing Conger · 2026-06-11 18:44:42 -07:00
  16c7c79540
• fix: Recover from sqlite directory being a file (#27719)

  Missed this file in the last PR -- this ensures that if you're in the
  really-weird edge case of your sqlite directory being a file, that it
  will fix it and recover properly.

  David de Regt · 2026-06-11 18:23:16 -07:00
  69b0f52b2a
• [codex] Remove async_trait from first-party code (#27475)

  ## Why
  
  First-party async traits should expose their `Send` contracts explicitly
  without requiring `async_trait`. This completes the migration pattern
  established in #27303 and #27304.
  
  ## What changed
  
  - Replaced the remaining first-party `async_trait` traits with native
  return-position `impl Future + Send` where statically dispatched and
  explicit boxed `Send` futures where object safety is required.
  - Kept implementations behavior-preserving, outlining existing async
  bodies into inherent methods where that keeps the diff reviewable.
  - Removed all direct first-party `async-trait` dependencies and the
  workspace dependency declaration.
  - Added a cargo-deny policy that permits `async-trait` only through the
  remaining transitive wrapper crates.
  - Updated `rand` from 0.8.5 to 0.8.6 to resolve RUSTSEC-2026-0097 and
  keep the full cargo-deny check passing.
  
  ## Validation
  
  - `just test -p codex-exec-server`: 216 passed, 2 skipped.
  - `just test -p codex-model-provider`: 39 passed.
  - `just test -p codex-core` and `just test`: changed tests passed;
  remaining failures are environment-sensitive suites unrelated to this
  migration.
  - `cargo deny check`
  - `just fix`
  - `just fmt`
  - `cargo shear`
  - `just bazel-lock-check`

  Adam Perry @ OpenAI · 2026-06-11 18:16:39 -07:00
  5a56caf18c
• Fix image extension PathUri conversion (#27711)

  ## Why
  
  `main` stopped compiling when #27498 passed an `AbsolutePathBuf` to the
  `ExecutorFileSystem` API migrated to `PathUri` by #27653.
  
  ## What
  
  Convert referenced image paths to `PathUri` before filesystem reads,
  declare the internal path-URI dependency, and refresh `Cargo.lock`.

  Adam Perry @ OpenAI · 2026-06-12 00:15:19 +00:00
  1829ed1122
• tui: clear stale hook row after turn completion (#27619)

  Fixes #27210.
  
  ## Why
  When the app server reports a visible `HookStarted` event for a
  `PostToolUse` hook but the turn reaches `TurnCompleted` before a
  matching hook completion event arrives, the TUI can leave the transient
  `Running PostToolUse hook` row visible after the agent is done.
  Interrupted and failed turn cleanup already drops transient live hook
  rows; the normal completion path did not.
  
  ## What Changed
  - Added `ChatWidget::clear_active_hook_cell()` for dropping transient
  live hook status without writing it to history.
  - Call that cleanup from normal task completion, while reusing it for
  the existing start/finalize cleanup paths.
  - Added `completed_turn_clears_visible_running_hook` snapshot coverage
  for the reported `PostToolUse` case.
  
  ## Tests
  - `just test -p codex-tui completed_turn_clears_visible_running_hook`
  - `just test -p codex-tui` (fails on current `main` in unrelated
  guardian tests:
  `update_feature_flags_disabling_guardian_clears_review_policy_and_restores_default`
  and
  `update_feature_flags_disabling_guardian_clears_manual_review_policy_without_history`)

  Mitsuhiro Kotake · 2026-06-12 09:15:04 +09:00
  44403dd3dd
• Add spans to turn lifecycle gaps (#27623)

  ## Why
  Codex app-server latency traces do not granularly cover turn task
  startup and inter-request handoffs. These spans help attribute time
  across task execution, startup prewarm, in-flight tool completion, and
  rollout persistence.
  
  ## What changed
  - Add `session_task.run` spans around task execution and
  `session_task.flush_rollout` around flushing pending conversation
  transcript writes to durable storage
  - Add `regular_task.prepare_run_turn` around regular-turn startup (Send
  the `TurnStarted` event, reset turn-specific reasoning state, and
  resolve any startup prewarm)
  - Add `startup_prewarm.resolve` around waiting for background session
  prewarming to finish, fail, time out, or be cancelled
  - Add a function-level trace span around draining in-flight tool calls
  (Wait for tool calls to complete, record tool result in conversation
  history, and other bookkeeping)
  
  ## Verification
  Trigger Codex rollout and observe new spans are included

  mchen-oai · 2026-06-11 16:55:01 -07:00
  92d9036910
• Route image extension reads through turn environments v2 (#27498)

  ## Why
  
  Image generation used `std::fs::read` for referenced image paths, which
  did not support environment-backed filesystems or their sandbox context.
  
  ## What changed
  
  - Expose optional turn environments to extension tool calls.
  - Include each environment’s ID, working directory, filesystem, and
  sandbox context.
  - Read referenced images through the selected environment filesystem.
  - Keep sandbox usage at the extension call site so extensions can choose
  the appropriate access mode.
  - Consolidate image request construction into one async function.
  - Add coverage for successful environment reads and read failures.
  
  ## Validation
  
  - `cargo check -p codex-image-generation-extension --tests`
  - `just fmt`
  - `just bazel-lock-update`
  - `just bazel-lock-check`
  
  `just test -p codex-image-generation-extension` could not complete
  because the build exhausted available disk space.

  Won Park · 2026-06-11 16:32:52 -07:00
  19ce6394af
• [codex] Move persistence policy application into ThreadStore (#27318)

  Move the application of the persistence policy into the thread store, so
  thread stores can get raw append items rather than canonical append
  items. This will enable store-specific projections over the raw input
  items.

  Tom · 2026-06-11 16:24:12 -07:00
  b2cc01fc7c
• Warn when hooks.json has unsupported top-level fields (#26426)

  Addresses #25875.
  
  ## Summary
  
  `hooks.json` accepted unknown top-level fields. A file with
  `SessionStart` at the root parsed as an empty hook configuration without
  warning.
  
  ## Repro
  
  ```json
  { "SessionStart": [...] }
  ```
  
  Previously: zero hooks, zero warnings.
  
  Now:
  
  ```text
  unknown field `SessionStart`, expected `hooks`
  ```
  
  The supported shape remains:
  
  ```json
  { "hooks": { "SessionStart": [...] } }
  ```
  
  ## Fix
  
  Reject unknown top-level fields and surface the parse warning in human
  and JSONL `codex exec` output.

  Abhinav · 2026-06-11 23:08:07 +00:00
  eddc5c75ed
• Remove fs/join and fs/parent from exec-server protocol (#27700)

  ## Summary
  
  Path composition is already handled by `PathUri`, leaving `fs/join` and
  `fs/parent` as redundant exec-server protocol surface. Because
  app-server and exec-server are deployed atomically, these obsolete
  methods can be removed without a compatibility shim.
  
  This removes the protocol constants and payloads, public client APIs,
  server registrations and handlers, and endpoint-only tests. Existing
  in-process `PathUri` join/parent coverage remains.
  
  ## Validation
  
  - `just test -p codex-exec-server` (215 passed, 2 skipped)

  Adam Perry @ OpenAI · 2026-06-11 15:48:53 -07:00
  e069153f2a
• feat: prefer managed Bedrock auth in model provider (#27689)

  ## Why
  
  The Amazon Bedrock model provider currently discards the shared
  `AuthManager`, so a Codex-managed Bedrock API key cannot reach
  request-time provider auth. Bedrock instead falls through to AWS
  environment or SDK credentials, and the request endpoint can be resolved
  from a different region than the managed credential.
  
  Managed Bedrock login should control both the bearer credential and
  Mantle region. Unrelated OpenAI or ChatGPT credentials must remain
  isolated from Bedrock.
  
  ## What changed
  
  - Pass the shared `AuthManager` into `AmazonBedrockModelProvider`.
  - Select `CodexAuth::BedrockApiKey` before the existing
  `AWS_BEARER_TOKEN_BEDROCK` and AWS SDK/SigV4 paths.
  - Use the managed Bedrock auth region when resolving the Mantle
  endpoint.
  - Filter other `CodexAuth` variants so OpenAI and ChatGPT auth are not
  exposed to Bedrock request auth or unauthorized recovery.
  - Add focused coverage for provider construction, managed-auth
  precedence, bearer headers, endpoint selection, and OpenAI-auth
  isolation.

  Celia Chen · 2026-06-11 15:33:38 -07:00
  b7a5d81f84
• [codex] Avoid duplicate hooks.json discovery with profiles (#26418)

  ## Summary
  
  V2 profiles add both `config.toml` and `<profile>.config.toml` to the
  config stack. Because both user layers resolve hook discovery to the
  same Codex home, Codex loaded the same `hooks.json` twice. This
  duplicated hook rows and caused each matching command to run twice.
  
  Deduplicate JSON hook discovery by absolute config folder within each
  effective config stack. TOML hooks remain layer-specific, and multi-cwd
  `hooks/list` results remain independently resolved per cwd.
  
  ## Reproduction
  
  1. Add `config.toml` and `work.config.toml` under `$CODEX_HOME`.
  2. Add one command hook to `$CODEX_HOME/hooks.json`.
  3. Run Codex with `--profile work`.
  4. Trigger the hook.
  
  Before this change, one declaration creates two handlers. Afterward, it
  creates one.
  
  Fixes #25645 and addresses the single-cwd duplication in #25437.
  
  ## Validation
  
  - `cargo nextest run -p codex-hooks`
  - `just fix -p codex-hooks`
  - `just fmt`
  - `just argument-comment-lint -p codex-hooks`

  Abhinav · 2026-06-11 15:25:55 -07:00
  0d8dee9427
• Include thread id in token budget context (#27663)

  ## Why
  
  The token budget full-context fragment identifies the current context
  window, but not the thread that owns that window. Including the thread
  id makes the initial context-window metadata self-contained, and
  `get_context_remaining` also needs to be usable from Code Mode without
  forcing callers to parse the model-facing fragment string.
  
  ## What changed
  
  - Include the session thread id in the initial `<token_budget>` context
  fragment.
  - Expose `get_context_remaining` as a Code Mode nested tool while
  keeping `new_context` direct-model-only.
  - Keep direct model-facing `get_context_remaining` output as the
  existing `<token_budget>` text fragment.
  - Return only `tokens_left` from the Code Mode structured result for
  `get_context_remaining`.
  - Update token-budget integration tests and add Code Mode coverage for
  the structured result.
  
  ## Verification
  
  - `just test -p codex-core token_budget`
  - `just test -p codex-core
  code_mode_get_context_remaining_returns_structured_result`
  - `just test -p core_test_support redacted_text_mode_normalizes_uuids`

  pakrym-oai · 2026-06-11 15:10:29 -07:00
  7516eb5c70
• [codex] migrate exec-server filesystem protocol to PathUri (#27653)

  Exec-server filesystem calls should preserve cross-platform `file:` URIs
  across the remote boundary instead of converting them through paths
  native to the client host.
  
  This changes the exec-server filesystem protocol DTOs to use `PathUri`,
  carries those values directly through remote and sandbox-helper
  transports, and keeps legacy native absolute-path request strings
  readable for compatibility. It also updates protocol documentation and
  coverage for URI serialization and non-native URI forwarding.

  Adam Perry @ OpenAI · 2026-06-11 15:09:12 -07:00
  d23bb22f25
• [codex-rs] enforce PAT workspace restrictions (#27450)

  ## Summary
  
  - validate a hydrated personal access token's workspace against
  `forced_chatgpt_workspace_id` before persisting `codex login
  --with-access-token`
  - apply the same PAT-only check when restricted auth managers load
  environment, ephemeral, or persisted credentials
  - enforce PAT workspace restrictions in the existing central
  login-restriction path
  - leave Agent Identity and cloud bootstrap behavior unchanged
  
  ## Scope
  
  This is intentionally the small PAT-only change. It does not attempt the
  broader auth-manager/bootstrap unification; that needs separate design
  work.
  
  ## Validation
  
  - `CARGO_INCREMENTAL=0 CARGO_TARGET_DIR=/tmp/codex-pat-target just test
  -p codex-login -p codex-cli` (410 passed)
  - `CARGO_INCREMENTAL=0 CARGO_TARGET_DIR=/tmp/codex-pat-target just fix
  -p codex-login -p codex-cli`
  - `just fmt`
  - `git diff --check`
  
  Context: https://openai.slack.com/archives/D0AUPLV03RQ/p1781138331548269

  cooper-oai · 2026-06-11 14:17:37 -07:00
  b5f1bb75d4
• core: Consolidate Responses API Codex metadata (#27122)

  ## What
  Introduce a `CodexResponsesMetadata` struct that defines all the core
  metadata we send to Responses API. Example fields are `thread_id`,
  `turn_id`, `window_id`, etc.
  
  Going forward, `client_metadata["x-codex-turn-metadata"]` will be the
  canonical way Codex sends metadata to Responses API across both HTTP and
  websocket transports.
  
  For now, we continue to emit the existing top-level HTTP headers and
  top-level `client_metadata` fields from the same
  `CodexResponsesMetadata` struct for compatibility reasons.
  
  Also, app-server clients who specify additional
  `responsesapi_client_metadata` via `turn/start` and `turn/steer` will
  have those fields merged into
  `client_metadata["x-codex-turn-metadata"]`, but cannot override the
  reserved fields that core uses (i.e. the fields in
  `CodexResponsesMetadata`).
  
  ## Why
  
  Responses API request instrumentation is the source of truth for
  downstream Codex analytics that join requests by Codex IDs such as
  session, thread, turn, and context window. Before this change, those
  values were assembled through several request-specific paths: HTTP
  request bodies, websocket handshake headers, websocket `response.create`
  payloads, compaction requests, and the rich `x-codex-turn-metadata`
  envelope all had their own wiring.
  
  That made metadata propagation easy to drift across API-key/direct
  Responses API requests, ChatGPT-auth/proxied requests, websocket
  requests, and compaction requests. It also made additions like
  `window_id` error-prone because a field could be added to one transport
  projection but missed in another.
  
  ## What changed
  
  - Added `CodexResponsesMetadata` as the core-owned snapshot for Codex
  metadata sent to ResponsesAPI.
  - Render `client_metadata["x-codex-turn-metadata"]`, flat
  `client_metadata` projections, and direct compatibility headers from
  that same snapshot.
  - Include the known Codex-owned fields in the turn metadata blob,
  including installation/session/thread/turn/window IDs, request kind,
  lineage, sandbox/workspace metadata, timing, and compaction details.
  - Treat app-server `responsesapi_client_metadata` as enrichment for the
  Codex turn metadata blob while preventing those extras from overriding
  Codex-owned fields.
  - Use the same metadata path for normal turns, websocket prewarm, local
  compaction, remote v1 compaction, and remote v2 compaction.
  - Keep websocket connection-only preconnect metadata separate so
  handshakes carry compatibility identity headers without inventing a fake
  turn metadata blob.
  
  ## Verification
  
  - `cargo check -p codex-core`
  - `just fix -p codex-core`

  Owen Lin · 2026-06-11 13:42:09 -07:00
  14df0e8833
• Resolve MCP server registrations through a catalog (#27634)

  ## Why
  
  MCP servers currently come from user config, local plugins,
  compatibility Apps synthesis, and host extensions. Those sources were
  composed by mutating a shared map, leaving registration identity,
  precedence, removal, and provenance implicit in assembly order.
  
  Before adding executor-owned MCPs, Codex needs one durable resolution
  boundary above `McpConnectionManager`. This PR introduces that boundary
  while preserving current server configuration, policy, and runtime
  behavior. Executor-scoped registrations and explicit policy layers
  remain follow-ups.
  
  ## What changed
  
  - Add typed `McpServerRegistration` inputs and an immutable
  `ResolvedMcpCatalog` in `codex-mcp`.
  - Retain each registration's complete `McpServerConfig`, including its
  environment binding, while recording its source and provenance.
  - Preserve the existing structural precedence between plugin, config,
  compatibility, and ordered extension sources.
  - Resolve equal-precedence actions by contribution order; provenance IDs
  are used only for diagnostics and cannot affect the winner.
  - Preserve extension removals and the existing name-scoped `enabled =
  false` veto.
  - Report same-tier conflicts with every contender and the final catalog
  outcome, including whether the winning action registers or removes the
  server.
  - Require MCP contributors to provide a stable diagnostic identity.
  - Derive materialized server maps and plugin ownership from the resolved
  catalog.
  
  `McpConnectionManager`, transport startup, tool calls, and resource
  routing continue to consume the same effective `McpServerConfig` values.
  
  ## Scope
  
  This PR does not add new MCP capabilities or change user-visible
  behavior. It does not add executor plugin discovery, thread-scoped
  registrations, dynamic refresh generations, or new user/managed policy
  semantics.
  
  ## Verification
  
  - Added focused catalog coverage for source precedence, complete
  configuration preservation, disabled vetoes, plugin ownership,
  contribution-order tie breaking, removal outcomes, and conflict
  diagnostics.
  - Extended hosted Apps coverage for ordered extension removal and
  Apps-disabled hosts with and without the hosted extension installed.
  - `cargo check -p codex-mcp --tests -p codex-extension-api -p
  codex-core`

  jif · 2026-06-11 21:54:52 +02:00
  4a5a676499
• [codex] Load user instructions through an injected provider (#27101)

  ## Why
  
  We want to remove implicit use of `$CODEX_HOME` from `codex-core` and
  make embedders responsible for supplying user-level instructions. This
  also ensures user instructions load when no primary environment is
  selected.
  
  ## What changed
  
  Stacked on #27415, which makes `codex exec` surface thread-scoped
  runtime warnings.
  
  - Added `UserInstructionsProvider` to `codex-extension-api`, with
  absolute source attribution and recoverable loading warnings.
  - Added `codex-home` with the filesystem-backed provider for
  `AGENTS.override.md` and `AGENTS.md`, preserving precedence, fallback,
  trimming, lossy UTF-8 handling, and the existing uncapped global
  instruction size.
  - Removed global instruction loading from `Config` and require
  `ThreadManager` callers to inject a provider.
  - Load provider instructions once for each fresh root runtime, including
  runtimes without a primary environment. Running sessions retain their
  snapshot, while child agents inherit the parent snapshot without
  invoking the provider.
  - Keep provider instructions separate while loading project `AGENTS.md`,
  then assemble the model-visible instructions with the existing ordering,
  source attribution, warning, and turn-context behavior.
  - Wired the Codex home provider through the CLI, app server, MCP server,
  core facade, and thread-manager sample.
  
  ## Validation
  
  - `just test -p codex-home -p codex-extension-api`
  - `just test -p codex-core agents_md`
  - `just test -p codex-core guardian`
  - `just test -p codex-app-server
  thread_start_without_selected_environment_includes_only_global_instruction_source`
  - `just test -p codex-exec warning`
  - `just bazel-lock-check`

  Adam Perry @ OpenAI · 2026-06-11 19:28:47 +00:00
  236b50125d
• [codex] migrate ExecutorFileSystem paths to PathUri (#27424)

  ## Why
  
  We're moving exec-server to use PathUri for its internal path
  representations.
  
  ## What
  
  Move `ExecutorFileSystem` APIs to use `PathUri` instead of
  `AbsolutePathBuf`. Future changes will convert higher-level parts of
  exec-server.

  Adam Perry @ OpenAI · 2026-06-11 18:44:18 +00:00
  b2a4e3be27
• [codex] remove EnvironmentPathRef (#27433)

  We're switching to using a static encoding of the host path in
  `PathUri`. We may need a type like this again but we can add it when
  it's more compelling.
  
  Stacked on #27454.

  Adam Perry @ OpenAI · 2026-06-11 18:26:12 +00:00
  4a05d3b282
• [codex] Provide ARM64 MinGW powl compatibility support (#27323)

  ## Why
  
  Windows ARM64 uses 64-bit `long double`, but the LLVM MinGW Bazel
  configuration omits the upstream `powl` compatibility source and does
  not link the `mingwex` archive that owns it. Cross-linking the release
  binary therefore fails with an unresolved `powl` symbol.
  
  ## What changed
  
  Patch the LLVM module to compile `math/arm-common/powl.c` into the ARM64
  MinGW extension sources and add `-lmingwex` to the Windows toolchain
  defaults.
  
  ## Validation
  
  - `just bazel-lock-check`
  
  Stack: 3 of 6. Depends on #27322.

  Adam Perry @ OpenAI · 2026-06-11 11:21:47 -07:00
  0b08bbb9d9
• feat: disable orchestrator skills for now (#27646)

  Temp disable orchestrator-only skills while waiting for the endpoint to
  be fixed

  jif · 2026-06-11 20:20:26 +02:00
  267232f3af
• [codex] revert concurrent npm publishing (#27639)

  In https://github.com/openai/codex/actions/runs/27354608310, the
  concurrency introduced by
  
  https://github.com/openai/codex/commit/5e50e7e639c9284ceac24a5498b73a5602fb6615
  caused the npm publish job to fail.
  
  The six platform tarballs contain different versions of the same
  `@openai/codex` package. Every publish updates the same packument, so
  only two concurrent updates succeeded while four failed with HTTP 409.
  
  Serializing that group would leave only the responses API proxy running
  in parallel. Saving one publish does not justify the nested `xargs`
  machinery needed to express those groups.
  
  Restore the serial publish loop and document why the platform variants
  must not publish concurrently. Platform packages remain ahead of the
  root CLI wrapper, and the SDK remains after its exact root dependency.

  Tamir Duberstein · 2026-06-11 18:04:24 +00:00
  b42bff21bb
• [codex] Surface runtime warnings in codex exec (#27415)

  ## Why
  
  `codex exec` drops thread-scoped warning notifications. Warnings
  discovered while a thread starts, including unreadable or invalid UTF-8
  project `AGENTS.md` files, therefore become silent.
  
  ## What changed
  
  - Process global and primary-thread warning notifications while
  continuing to ignore warnings from unrelated threads.
  - Render runtime warnings in human output and expose them through the
  existing non-fatal error item in JSONL output.
  - Add focused routing, rendering, and malformed project-instruction
  coverage.

  Adam Perry @ OpenAI · 2026-06-11 14:01:16 -04:00
  7fbbc9f033
• [codex] add cross-platform filesystem adapter coverage (#27454)

  ## Why
  
  The exec-server's existing filesystem tests only run on `#[cfg(unix)]`.
  We should be running the applicable ones on Windows, and also include
  the basic filesystem operations that will be modified by migrating to
  `PathUri`.
  
  ## What
  
  Split platform-neutral local/remote tests into a shared Unix/Windows
  suite while keeping the existing `AbsolutePathBuf` API, and add Windows
  junction canonicalization coverage.

  Adam Perry @ OpenAI · 2026-06-11 17:53:18 +00:00
  cc97839068
• [codex] Propagate plugin app categories (#27420)

  ## What
  - Parse optional `.app.json` `category` overrides for plugin apps.
  - Add nullable `category` to `AppSummary` and `AppTemplateSummary` in
  the app-server protocol.
  - Fall back from `branding.category` to the first non-empty
  `app_metadata.categories` value when building app/template summaries.
  - Regenerate schema/type fixtures and update plugin read/install tests.
  
  ## Why
  The plugin details UI needs a normalized per-app category. Some apps
  only provide their default category in metadata, while others need a
  local `.app.json` override.

  charlesgong-openai · 2026-06-11 10:34:41 -07:00
  eb76336f60
• lint: allow self-documenting builder arguments (#27507)

  Builder-style setters often repeat the setting name in both the method
  and its sole argument. Calls such as `.enabled(false)` are already
  self-documenting, so requiring `/*enabled*/` adds noise without
  clarifying the call.
  
  ## What changed
  
  - Exempt a method's sole non-self argument when its resolved parameter
  name matches the method name.
  - Continue validating any explicit argument comment against the resolved
  parameter name.
  - Continue requiring comments when method and parameter names differ or
  when a method has multiple non-self arguments.
  - Document the exception in `AGENTS.md` and the lint's own behavior
  documentation.
  
  ## Examples
  
  Before this change we'd need redundant comments like this:
  
  ```rust
  builder.enabled(/*false*/ false);
  builder.retry_count(/*retry_count*/ 3);
  builder.base_url(/*base_url*/ None);
  ```
  
  Now can be written like this:
  
  ```rust
  builder.enabled(false);
  builder.retry_count(3);
  builder.base_url(None);
  ```
  
  Still disallowed:
  
  ```rust
  client.set_flag(true); // Method name does not match parameter `enabled`.
  options.enabled(false, /*retry_count*/ 3); // More than one non-self argument.
  options.enabled(/*value*/ false); // Explicit comment does not match `enabled`.
  ```
  
  ## Validation
  
  Added UI coverage for boolean, numeric, and `None` builder arguments,
  multi-argument methods, and explicit comment mismatches. Ran `rustup run
  nightly-2025-09-18 cargo test` in `tools/argument-comment-lint`.

  Adam Perry @ OpenAI · 2026-06-11 10:24:42 -07:00
  52db447c77
• Print TUI session info on fatal exits (#27417)

  ## Summary
  
  TUI exits printed the resume/session summary only after checking the
  exit reason. On fatal exits, both CLI wrappers wrote the error and
  called `process::exit(1)` immediately, so an active session that ended
  on a fatal error could skip the session information entirely.
  
  This change prints the normal exit summary before returning the fatal
  nonzero exit code. If a fatal exit has a known thread id but no
  resumable rollout hint, it prints `Session ID: <id>` instead of staying
  silent. It also flushes stdout before `process::exit(1)` so the summary
  line is not lost during process teardown.
  
  ## Implementation
  
  - Apply the fatal-exit ordering fix in both `codex` and standalone
  `codex-tui`.
  - Keep normal user-requested exit behavior unchanged.
  - Preserve the existing resume hint when a rollout is resumable, and use
  the raw thread id only as a fatal-exit fallback.

  Eric Traut · 2026-06-11 09:56:09 -07:00
  9d88e299a7
• Emit plugin ID on MCP tool call analytics events (#27483)

  MCP tool-call items already carry the runtime-resolved plugin owner, but
  the analytics reducer dropped that field. Forwarding the existing value
  provides direct attribution without downstream server-name inference.
  
  ## Summary
  
  - emit `plugin_id` on `codex_mcp_tool_call_event` payloads
  - preserve `null` for MCP calls without a plugin owner
  - verify the serialized field through the MCP item lifecycle test
  
  ## Test
  
  - `cd codex-rs && just test -p codex-analytics`
  - `cd codex-rs && just fix -p codex-analytics`
  - `cd codex-rs && just fmt`

  Chris Dong · 2026-06-11 09:55:53 -07:00
  df9dd22248
• Remove TUI legacy Windows sandbox dependency (#27490)

  ## Why
  
  This is part of an ongoing attempt to eliminate the TUI's direct
  dependency on core features. When we moved the TUI to the app server, we
  left a `legacy_core` shim that re-exported some remaining core symbols
  for the TUI. The intent was to eventually remove all of these.
  
  In this PR, we remove the symbols related to the Windows sandbox.
  
  The change should be behavior-neutral and low risk because it's just
  refactoring and removal of code that is now effectively dead.
  
  When working on this PR, I noticed a big existing problem that affects
  mixed-platform remoting. For example, if you run the TUI on a Linux box
  and remote into a Windows box, the TUI logic doesn't properly handle
  Windows sandbox setup properly. Fixing this is beyond the scope of this
  PR, but I've left a TODO comment in place so we don't forget.
  
  ## What changed
  
  - Move the remaining TUI-specific sandbox level, setup, telemetry, and
  read-root helpers into `codex-tui`, calling `codex-windows-sandbox`
  directly.
  - Remove the Windows sandbox namespace and read-root grant re-exports
  from the client-side `legacy_core` facade.
  - Remove the dormant pre-elevation prompt fallback guarded by the
  permanently enabled `ELEVATED_SANDBOX_NUX_ENABLED` switch. The reachable
  elevated and non-elevated setup flows remain unchanged.

  Eric Traut · 2026-06-11 09:23:08 -07:00
  1e5b87b4d7
• [codex] download only release artifacts (#27529)

  In https://github.com/openai/codex/actions/runs/27308011621, the
  release job downloaded 10.0 GiB of workflow artifacts in 87 seconds,
  then discarded 42 artifacts accounting for 3.3 GiB.
  
  Select target and supplemental release artifact patterns at download
  time. This also excludes duplicate Cargo timing files without a cleanup
  pass and should reduce total release time by about 30 seconds.

  Tamir Duberstein · 2026-06-11 10:34:41 -04:00
  f42780109c
• [codex] publish DotSlash alongside npm (#27528)

  In https://github.com/openai/codex/actions/runs/27308011621,
  preparing and publishing the three DotSlash configurations took 72
  seconds after creating the GitHub release. npm publication could not
  start until those independent steps finished.
  
  Move DotSlash publication to a sibling job that starts after the GitHub
  release. npm and DotSlash can then proceed concurrently, reducing total
  release time by about one minute.

  Tamir Duberstein · 2026-06-11 10:23:46 -04:00
  9163c0a335
• [codex] publish npm packages concurrently (#27527)

  In https://github.com/openai/codex/actions/runs/27308011621,
  publishing the npm tarballs serially took 147 seconds. Six platform
  packages and the responses API proxy are independent.
  
  Publish those packages concurrently, then publish the root CLI wrapper
  and SDK in dependency order. Individual platform publishes took 19 to
  23 seconds, so this should reduce total release time by nearly two
  minutes.

  Tamir Duberstein · 2026-06-11 07:19:27 -07:00
  5e50e7e639
• skills: decouple the skills extension from core (#27413)

  ## Why
  
  `ext/skills` currently depends on `codex-core` for two host concerns:
  reading the concrete `Config` type and borrowing core-owned
  model-context fragment types. That coupling prevents the extension from
  being assembled independently above core and leaves context that belongs
  to the skills feature owned by core.
  
  This stacked PR introduces the host boundary needed for the broader
  extension migration while intentionally preserving existing skills
  behavior. It is stacked on #27404.
  
  ## What changed
  
  - Adds a small public `SkillsExtensionConfig` view and makes skills
  installation generic over the host config type.
  - Requires the host to map its config into that view; app-server
  supplies the current `Config` values.
  - Moves the available-skills and selected-skill context fragment
  implementations into `ext/skills`, preserving their roles, markers, and
  rendered bytes.
  - Removes the direct `codex-core` dependency from
  `codex-skills-extension`.
  - Keeps local discovery, invocation, side effects, and the
  `codex-core-skills` compatibility types unchanged for later staged PRs.
  
  ## Behavior
  
  This adds no capability and is intended to have no user-visible or
  model-visible behavior change. The install API and ownership boundary
  change internally; emitted skills context remains byte-for-byte
  compatible.
  
  ## Validation
  
  - Updates the skills extension integration coverage to use a host-owned
  test config.
  - Asserts the complete rendered catalog and selected-skill fragments,
  including their roles and markers.
  - `just bazel-lock-check`
  - Rust tests and Clippy were not run locally per request; CI will run
  them.

  jif · 2026-06-11 14:03:53 +02:00
  7c2394808e
• skills: render catalog locators by authority (#27591)

  ## Why
  
  Hosted skills introduced by #27388 use opaque `skill://` resource
  identifiers, but the skills catalog rendered every locator as a `file`
  and told the model that every skill body lived on disk. That can send
  the model toward filesystem tools for a resource that must instead be
  read through its owning authority.
  
  The catalog should describe how each source is accessed without changing
  the underlying discovery or invocation behavior.
  
  ## What changed
  
  - Render host skills as `file`, executor-owned skills as `environment
  resource`, orchestrator-owned skills as `orchestrator resource`, and
  custom-provider skills as `custom resource`.
  - Update the shared no-alias guidance to describe source locators rather
  than assuming every skill is stored on the host filesystem.
  - Direct orchestrator resources through `skills.list` and `skills.read`,
  and explicitly tell the model not to treat `skill://` identifiers as
  filesystem paths.
  - Preserve the existing filesystem and alias behavior for local skills.
  
  ## Scope
  
  This PR changes only model-visible catalog rendering and guidance. It
  does not change skill discovery, selection, prompt injection, provider
  routing, catalog caching or refresh behavior, resource validation, or
  the `skills.*` tool contract.
  
  ## Verification
  
  - Extended skills-extension coverage for host-file and executor-resource
  labels.
  - Extended the no-executor app-server flow to assert
  orchestrator-resource wording and non-filesystem guidance.

  jif · 2026-06-11 13:51:04 +02:00
  4322e01d2b
• test: cover referenced backend skill reads without an executor (#27404)

  ## Why
  
  PR #27388 lets models read child resources referenced by backend plugin
  skills without an executor. The integration fixture should prove that
  real flow: the injected `SKILL.md` advertises a child `skill://`
  resource, and `skills.read` resolves that exact resource through the
  backend provider.
  
  This is stacked on #27388.
  
  ## What changed
  
  - Adds a child-resource link to the backend skill fixture and asserts
  that it reaches model context.
  - Tightens the end-to-end skills test around `skills.list` followed by
  `skills.read` for the referenced resource.
  - Splits the existing app-server `mcpResource/read` coverage into a
  focused test so the generic RPC path remains covered independently.
  
  ## Validation
  
  - Adds app-server integration coverage for both the referenced backend
  skill resource and the generic MCP resource read path.

  jif · 2026-06-11 12:55:58 +02:00
  dd46ef1aac
• nit: cap error (#27585)

  Just cap an error that could end up in the model context

  jif · 2026-06-11 12:52:46 +02:00
  e6757bba91
• multi-agent: move concurrency guidance into v2 usage hints (#27569)

  ## Why
  
  Native Codex currently teaches multi-agent concurrency through the
  `spawn_agent` tool description, while bridge-driven evals frame the same
  limit as a shared pool of active agent slots. That mismatch makes the
  model-facing story harder to reason about, especially because the
  tool-level wording does not make it explicit that the limit covers the
  whole agent team, including the current agent.
  
  This change gives native Codex the same mental model: tell the root
  agent and subagents how many active slots exist, and remove the separate
  `spawn_agent` limit wording.
  
  ## What changed
  
  - Extend the built-in `multi_agent_v2` root and subagent usage hints
  with shared-slot guidance derived from the resolved
  `max_concurrent_threads_per_session` value.
  - Keep the complete default hints in `MultiAgentV2Config` so initial
  context and forked histories consume the same canonical strings.
  - Drop the redundant `spawn_agent` description text and remove the
  now-unused limit plumbing from the tool spec path.
  
  ## Testing
  
  - `just test -p codex-core usage_hint`
  - `just test -p codex-core
  multi_agent_v2_default_session_thread_cap_counts_root`
  - `just test -p codex-core
  multi_agent_v2_default_usage_hints_use_configured_thread_cap`
  - `just test -p codex-core
  spawn_agent_tool_v2_requires_task_name_and_lists_visible_models`
  - `just test -p codex-core
  multi_agent_feature_selects_one_agent_tool_family`

  jif · 2026-06-11 12:41:44 +02:00
  0870352241
• skills: expose remote skill resource tools (#27388)

  ## Why
  
  PR #27387 makes backend plugin skills discoverable and invocable without
  an executor, but resources referenced by those skills still sit behind
  the generic MCP resource surface. The model needs a skills-owned API
  that preserves the provider authority and package boundary instead of
  treating remote resources like local files.
  
  This is stacked on #27387.
  
  ## What
  
  - Adds one `skills` namespace with bounded `list` and `read` tools for
  remote skill providers.
  - Revalidates `authority + package` against the live remote catalog on
  every read, then routes the opaque resource ID back through that
  provider.
  - Allows the backend provider to read canonical child `skill://`
  resources while rejecting cross-package, non-canonical, query, fragment,
  and traversal-shaped URIs.
  - Caps each serialized tool result at 8 KB. Lists are paginated; reads
  return an opaque continuation cursor.
  - Marks the JSON output as external context so memory generation can
  apply its normal suppression policy.
  - Deliberately does not add `skills.search`; that waits for a bounded
  plugin-service search contract.
  
  ## Tool contract
  
  Pseudo-Python matching the wire shape:
  
  ```python
  from typing import Literal, NotRequired, TypedDict
  
  
  class RemoteSkillAuthority(TypedDict):
      kind: Literal["remote"]
      id: str  # e.g. "codex_apps"
  
  
  class RemoteSkill(TypedDict):
      authority: RemoteSkillAuthority
      package: str  # opaque provider-owned package ID
      name: str
      description: str
      main_resource: str  # opaque provider-owned SKILL.md ID
  
  
  class SkillsListParams(TypedDict):
      cursor: NotRequired[str]
  
  
  class SkillsListResult(TypedDict):
      skills: list[RemoteSkill]
      next_cursor: str | None
      warnings: list[str]
      truncated: bool
  
  
  class SkillsReadParams(TypedDict):
      authority: RemoteSkillAuthority  # copied from skills.list
      package: str  # copied from skills.list
      resource: str  # provider-owned child resource ID
      cursor: NotRequired[str]  # copy next_cursor to continue
  
  
  class SkillsReadResult(TypedDict):
      resource: str
      contents: str
      next_cursor: str | None
      truncated: bool
  
  
  class Skills:
      def list(self, params: SkillsListParams) -> SkillsListResult: ...
      def read(self, params: SkillsReadParams) -> SkillsReadResult: ...
  ```
  
  There is one namespace for all remote skills, not one tool or MCP server
  per skill. No resource ID is converted into a filesystem path.
  
  ## Backend dependency
  
  `/ps/mcp` must support direct reads of child resources such as
  `skill://plugin_demo/deploy/references/deploy.md`. This PR implements
  and tests the Codex side of that contract; production child reads remain
  dependent on the corresponding plugin-service support. Search remains
  out of scope until that service exposes a bounded search/resource API.
  
  ## Validation
  
  - Added an app-server integration test covering `skills.list` followed
  by `skills.read` with no executor.
  - Ran `just fmt`.
  - Ran `just bazel-lock-update` and `just bazel-lock-check`.
  - Did not run Rust tests or Clippy locally, per request; CI will run
  them.

  jif · 2026-06-11 12:38:04 +02:00
  7b3eb8e4bc
• core: enable remote compaction v2 by default (#27573)

  ## Why
  
  Remote compaction v2 is ready to become the default for providers that
  already support remote compaction. Leaving it behind an
  under-development opt-in keeps eligible sessions on the legacy
  remote-compaction path.
  
  This does not broaden provider eligibility: OpenAI and Azure move to v2,
  while Bedrock and OSS providers retain their existing local-compaction
  behavior.
  
  ## What changed
  
  - Mark `remote_compaction_v2` stable and enable it by default.
  - Make tests that intentionally cover legacy remote compaction
  explicitly disable v2.
  - Update parity coverage so v2 exercises the production default and only
  legacy mode opts out.
  
  ## Verification
  
  - `just test -p codex-core
  auto_compact_runs_after_resume_when_token_usage_is_over_limit
  auto_compact_counts_encrypted_reasoning_before_last_user
  auto_compact_runs_when_reasoning_header_clears_between_turns
  responses_lite_compact_request_uses_lite_transport_contract`

  jif · 2026-06-11 10:07:19 +00:00
  273a4aa4f2
• skills: cache remote catalog failures per thread (#27403)

  ## Summary
  
  - cache the first remote skill catalog outcome per thread, including
  failures
  - preserve discovery errors as catalog warnings
  - update the existing cache regression test to verify failed discovery
  is attempted once
  
  ## Why
  
  A failed or hanging `codex_apps` `resources/list` call could run once
  while building initial context and immediately again while contributing
  first-turn input. With the discovery timeout, an ordinary Apps turn
  could wait up to 20 seconds before inference and retry again on later
  turns even when no remote skill was mentioned.
  
  Caching a warning-only empty catalog preserves graceful degradation
  while preventing repeated synchronous discovery attempts.
  
  ## Testing
  
  - `just fmt`
  - Tests and Clippy not run per request; CI will validate the change.

  jif · 2026-06-11 11:46:47 +02:00
  6754e77792
• skills: make backend plugin skills invocable without an executor (#27387)

  ## Why
  
  #27198 made the extension-owned `codex_apps` MCP connection the hosted
  plugin runtime, but its `mcp/skill` resources still bypassed the skills
  extension. App-server could list and read those resources through
  generic MCP APIs, but a thread with no selected environment did not
  expose them in the model's skills catalog or load their `SKILL.md`
  through `$skill`.
  
  Hosted skills should stay remote while using the same typed catalog,
  source authority, deduplication, bounded contextual catalog, and
  selected-skill prompt injection as host and executor skills. They should
  not be downloaded or exposed as ambient filesystem paths.
  
  ## What changed
  
  - Add a session-scoped `McpResourceClient` over the replaceable MCP
  connection manager so resource list/read calls follow startup and
  refresh replacements.
  - Add a `BackendSkillProvider` that pages `codex_apps` resources,
  accepts bounded and validated `mcp/skill` entries, and reads a selected
  skill's `SKILL.md` through the same MCP connection.
  - Register the remote provider in app-server and include it in the
  skills catalog even when a thread has no selected capability roots or
  executor.
  - Contribute hosted skill metadata through the bounded
  `AvailableSkillsInstructions` developer-context path, exclude remote
  entries from per-turn catalog injection, and classify `<skills>`
  messages as contextual developer content so rollback can trim and
  rebuild them correctly.
  
  ## Testing
  
  - Extend the app-server MCP resource integration test with
  `environments: []` to exercise two-page discovery, filter a
  non-`mcp/skill` resource, verify the escaped developer catalog entry and
  user-role `<skill>` fragment containing the fetched `SKILL.md`, and
  preserve generic MCP resource reads.
  - Add core event-mapping coverage that classifies `<skills>` developer
  messages as contextual history.

  jif · 2026-06-11 11:28:16 +02:00
  a287c5dffd
• [codex] Tune cloud config cache intervals (#26513)

  ## Summary
  - Increase the cloud config bundle background refresh interval from 5
  minutes to 15 minutes.
  - Increase the local cloud config bundle cache TTL from 30 minutes to 1
  hour.
  
  ## Why
  - Reduce background cloud config fetch frequency while keeping cached
  workspace-managed policies available longer between refreshes.
  
  ## Validation
  - `just fmt`
  - `cargo test -p codex-cloud-config`

  alexsong-oai · 2026-06-10 23:42:15 -07:00
  53b5019745
• [codex-analytics] Emit structured compaction codex errors (#27082)

  ## Summary
  - replace raw compaction `error` analytics with `codex_error_kind` and
  `codex_error_http_status_code`
  - derive compaction error telemetry from `CodexErr` using the same
  `CodexErrKind` mapping and HTTP status helper used by turn events
  - remove the pre-compact hook stop reason from the internal compaction
  outcome now that it is no longer emitted as raw analytics text
  
  ## Why
  Compaction `error` was a raw `CodexErr::to_string()` value, which can
  carry free-form provider or user-derived text. Structured Codex error
  fields preserve useful low-cardinality telemetry without sending the raw
  string.
  
  ## Validation
  - `just fmt`
  - `just test -p codex-analytics`
  - `just test -p codex-core
  compact::tests::build_token_limited_compacted_history_appends_summary_message`
  
  Attempted `just test -p codex-core`; the changed crate compiled, but the
  full target failed in unrelated environment-dependent tests such as
  missing helper binaries and shell snapshot timeouts.

  rhan-oai · 2026-06-11 06:07:06 +00:00
  8d9f33c87c
• Use generic search metadata for dynamic tools (#27356)

  ## Why
  
  Dynamic tools maintained a separate search-text builder even though the
  shared tool search path already derives the same metadata from
  `ToolSpec`. Using the shared path removes duplicate behavior before
  adding explicit namespaces.
  
  ## What changed
  
  - Build dynamic-tool search entries with
  `ToolSearchInfo::from_tool_spec`.
  - Remove the custom search-text state and its implementation-only unit
  test.
  
  The old search text included the tool name, its space-separated form,
  description, namespace, and top-level parameter names. The shared
  builder preserves all of those terms and also indexes namespace
  descriptions and nested schema metadata.
  
  ## Test plan
  
  - `just test -p codex-core
  tool_search_returns_deferred_dynamic_tool_and_routes_follow_up_call`

  sayan-oai · 2026-06-10 23:06:34 -07:00
  b5a718ef67
• [codex-analytics] report cached input tokens for v2 compaction (#27103)

  ## Summary
  
  - add nullable `cached_input_tokens` to the compaction analytics event
  - populate it from response usage for compaction v2
  - leave it `null` for other compaction implementations
  
  This adds visibility into prompt-cache usage for v2 compaction without
  changing compaction behavior.
  
  ## Testing
  
  - `just test -p codex-analytics`
  - `just test -p codex-core
  collect_compaction_output_accepts_additional_output_items`

  rhan-oai · 2026-06-10 22:47:22 -07:00
  383708e74e
• image: preserve metadata when resizing prompt images (#27266)

  ## Summary
  
  - Preserve ICC profiles and EXIF metadata when resizing and re-encoding
  prompt images.
  - Retain EXIF orientation metadata without rotating or otherwise
  modifying the pixel data locally.
  - Support metadata preservation for PNG, JPEG, and WebP outputs.
  - Continue returning the original bytes when an image does not require
  re-encoding.
  
  This intentionally preserves the metadata most important for rendering
  prompt images faithfully. Other format-specific metadata is not copied.
  
  ## Motivation
  
  Client-side resizing previously discarded image metadata during
  re-encoding. This could lose color-profile information and EXIF
  orientation needed by downstream image consumers.
  
  
  #### [git stack](https://github.com/magus/git-stack-cli)
  - ✅ `1` https://github.com/openai/codex/pull/27245
  - ✅ `2` https://github.com/openai/codex/pull/27247
  - ✅ `3` https://github.com/openai/codex/pull/27246
  - 👉 `4` https://github.com/openai/codex/pull/27266

  Curtis 'Fjord' Hawthorne · 2026-06-10 21:17:32 -07:00
  598125109d
• [codex] Add context remaining tool (#27518)

  ## Why
  
  The token budget feature can inject remaining-context notices into
  model-visible context, but the model does not have a direct way to ask
  for that same remaining-token fragment on demand.
  
  This PR adds a small model tool for the token budget feature so the
  model can request the current remaining context window message without
  duplicating the fragment format.
  
  ## What changed
  
  - Adds a `get_context_remaining` direct-model tool behind
  `Feature::TokenBudget`.
  - Renders the tool output through `TokenBudgetRemainingContext`,
  matching the existing budget message shape.
  - Registers the tool alongside `new_context` in the token budget tool
  set.
  - Adds integration coverage that verifies the tool is exposed and
  returns the same `<token_budget>` remaining fragment already present in
  context.
  
  ## Validation
  
  - `just test -p codex-core token_budget`

  pakrym-oai · 2026-06-11 04:17:10 +00:00
  dac5f07403
• [codex] Compact when comp_hash changes (#27520)

  ## Summary
  - snapshot `comp_hash` into `TurnContext` when the turn is created and
  use that snapshot as the downstream source of truth
  - persist the turn hash in rollout context and recover it into
  previous-turn settings during resume and fork replay
  - compact existing history with the previous model only when both
  adjacent turns provide hashes and the values differ
  - record `comp_hash_changed` as the compaction reason
  - cover ordinary transitions, resume, and missing-hash compatibility
  with end-to-end tests
  
  ## Why
  History produced under one compaction-compatible model configuration may
  not be safe to carry directly into another. Compacting at the turn
  boundary converts that history before context updates and the new user
  message are added. Persisting the turn snapshot in `TurnContextItem`
  makes the same protection work after resuming a rollout.
  
  A missing hash is not treated as evidence of incompatibility. `None →
  Some`, `Some → None`, and `None → None` do not trigger compaction; only
  `Some(previous) → Some(current)` with unequal values does.
  
  ## Stack
  - depends on #27532
  - #27532 is based directly on `main`
  
  ## Testing
  - `just test -p codex-core pre_sampling_compact_` — 6 passed
  - `just test -p codex-core
  turn_context_item_uses_turn_context_comp_hash_snapshot` — passed
  - `just fix -p codex-core -p codex-protocol -p codex-analytics -p
  codex-models-manager`

  Ahmed Ibrahim · 2026-06-11 04:11:26 +00:00
  ba4925b3c2