## What changed
- Add structured `usageLimitExceeded` metadata to failed image-generation
items, including the image limit ID and optional reset timestamp.
- Preserve the failure metadata in completion events, app-server thread
history, thread reads and resumes, and migrated legacy rollouts.
- Export the new failure type in the generated JSON and TypeScript schemas.
## Testing
- Cover usage-limit responses through item completion, persistence, and thread
resume.
- Verify legacy rollout migration retains image-generation failure metadata.
GitOrigin-RevId: 91c31a2a47456b6b916ee03002ff314b05946dd4
## What changed
- Remove effective-config lockfile export, replay, and validation from session startup.
- Remove the `debug.config_lockfile` settings and generated schema entries.
- Remove feature-config materialization helpers that were only used to create lockfiles.
GitOrigin-RevId: a8c07c1c06325b3ec3dae9a97c36c2488d37df25
## What changed
- Import skill metadata and mention helpers directly from `codex-skills`.
- Import host skill loading types directly from `codex-skills-extension`.
- Make the remaining `codex-core` skills module private and remove its skill API re-exports, including the `HostSkillsService` re-export from `codex-core-api`.
GitOrigin-RevId: 26bf8fffd980df9c4d0c308d7e983ceab9a5df82
## Why
`skills/list` can load multiple working directories in one request, but bundled
skill discovery did not account for different effective configurations across
those directories.
## What changed
- Resolve `skills.bundled.enabled` from each load input's effective config layer
stack inside the host skills service.
- Include or exclude system-scoped skills for each working directory based on
that resolved setting.
- Keep bundled skills enabled by default when the setting is absent or invalid.
## Testing
- Add a multi-directory `skills/list` test with bundled skills disabled in one
project and enabled in another.
- Add config-layer tests for defaults, overrides, and malformed bundled-skill
configuration.
GitOrigin-RevId: e4e97dc7d0a374ac71d0aa11e55a9e337f661717
## Why
Subagents should be able to use known HTTP MCP tool definitions without opening a connection until a tool is actually called.
## What changed
- Add streamable HTTP configurations to the process-scoped MCP tool catalog cache when their authentication identity can be derived safely.
- Fingerprint transport settings, relevant environment variables, protocol mode, plugin status, and client capabilities so catalogs are reused only across equivalent connections.
- Keep OAuth and other dynamically resolved credential configurations out of the shared cache.
## Testing
- Add an integration test proving that a subagent receives cached HTTP tools without reinitializing the server, then starts its own connection when it calls one.
GitOrigin-RevId: bb2787e29e9b71993def31aafd1f0d8f1b728d26
## What changed
- Reject invalid or unsupported image data before producing tool output, so
non-image file contents are not exposed through code mode.
- Preserve valid image bytes and metadata while leaving image preparation and
resizing to the history insertion path.
## Testing
- Cover invalid images in both code mode and standard `view_image` calls.
- Verify that code mode preserves PNG bytes, dimensions, EXIF orientation, and
metadata.
GitOrigin-RevId: 07343ed10b781d0ce0ffb5b24432658be4c046e3
## What changed
- Add `PersistContext` to the thread-store persistence contract so stores can
identify persistence requested immediately before model sampling. A
`TurnStart` request may be enqueued in the background when later flush and
shutdown operations fence it and report any failure; all other persistence
remains synchronous.
- Use the turn-start context only for the initial input of a regular turn, while
admission acknowledgments, steered input, and other persistence paths keep
the standard durability behavior.
- Flush pending metadata before turn-start persistence and ensure shutdown is
still attempted if that metadata update fails.
## Testing
- Verify that developer instructions and user input are persisted before the
model request completes for a default paginated-history thread.
GitOrigin-RevId: 162f0ec796a61aebe66ca0b909fbcccec3047b85
## Why
Background refreshes previously warmed only the on-disk cache, so new sessions in the same process continued using the startup snapshot.
## What changed
- Make `CloudConfigBundleLoader` retrieve the latest shared bundle on each configuration load.
- Update the in-memory bundle after successful refreshes while preserving the last successful bundle when a refresh fails.
- Stop refresh work when its loader is replaced or its final clone is dropped.
## Testing
- Cover refreshed requirements and managed configuration in later sessions.
- Cover concurrent initial loads, refresh failures and recovery, bundle clearing, and refresh-task cancellation.
GitOrigin-RevId: ae3d79b575bad71a1eed370cee6dc66dc022ffa8
## What changed
- Pass image bytes from `view_image` through unchanged for both direct and code-mode calls, leaving decoding and resizing to the shared history-insertion path.
- Represent invalid image data with the existing image-omission placeholder instead of returning a tool error.
## Testing
- Update the `view_image` integration test to cover placeholder output for invalid image data.
GitOrigin-RevId: 62863defd4815efb8a7725712fd583ad81db3fbb
## What changed
- Remove `Clone` from `Submission` and remove `Clone` and `PartialEq` from `Op`.
- Consume operations directly in the submission loop instead of cloning them.
- Limit thread-manager test capture to the operation variants under test and update assertions to compare their relevant fields.
GitOrigin-RevId: 781cc631391b8583d94dad5ca45f589856c0b21a
## What changed
- Add `responses_api_metadata` for product-owned key/value metadata included in
every Responses API turn metadata payload, including parent and subagent
requests.
- Limit the map to 16 entries, ASCII identifier keys of at most 64 bytes, and
values of at most 128 bytes. Reject reserved Codex metadata keys and ignore
this setting in project-local configuration.
- Give configured product metadata precedence over app-server client metadata
while keeping it out of metadata sent to external MCP servers.
## Testing
- Cover reserved-key validation, metadata precedence, MCP isolation, and
propagation to parent and subagent Responses API requests.
GitOrigin-RevId: a7be798294fde25145ab375a468321bb4e4a49f1
## What changed
- Decode image data in the `view_image` handler and return a clear error for invalid or unsupported input.
- Re-encode code-mode images as PNG pixel data while preserving original image bytes for direct tool calls.
- Cover code-mode PNG output and rejection of invalid image data.
GitOrigin-RevId: 0a00e595ab749c19eab866a22f6577b6627e19f1
## What changed
- Parse safety-buffering payloads from typed `response.metadata` SSE events.
- Preserve the existing top-level `safety_buffering` field as the authoritative value when it is present, including when it is null or malformed.
- Continue applying the header-provided fallback model when the metadata payload omits `retry_model`.
## Testing
- Add parser coverage for metadata fallback, top-level precedence, and unrelated metadata events.
- Exercise metadata-based safety-buffering delivery through the core SSE integration test.
GitOrigin-RevId: 7dadfd54be28f2f33c2283de92fd49da0557d98a
## What changed
- Add `goals.max_goal_token_budget` as a positive-integer configuration setting.
- Use the configured maximum as the default budget for new goals and when `tokenBudget` is reset to `null`.
- Reject goal creation and updates whose token budget exceeds the configured maximum, including requests through goal tools and `thread/goal/set`.
- Respect managed configuration precedence and per-thread configuration overrides.
## Testing
- Cover configuration parsing and managed overrides.
- Cover defaulting, resetting, and rejecting oversized budgets through the goal service, goal tools, and app-server API.
GitOrigin-RevId: f8d7e6418cdc237d454c8cf47bb32ba0d44a60cf
## Why
Managed networking implicitly selected the elevated Windows sandbox backend,
even when the sandbox was configured to use a restricted token.
## What changed
- Select the Windows sandbox backend solely from `WindowsSandboxLevel`.
- Reject managed networking with a restricted-token sandbox before spawning a
process, since managed networking requires the elevated backend.
- Cover the rejection through sandbox preparation, unified exec, and Windows
sandbox session tests.
GitOrigin-RevId: 308858652d7b629af623d22896dafde3a23d3758
## What changed
- Add `codex-history` for model-history and persisted-rollout domain types, including `RolloutItem`, `RolloutLine`, `CompactedItem`, and initial/resumed history state.
- Re-export the persisted types from `codex-rollout` and update consumers to use the new crate boundary instead of `codex-protocol`.
- Preserve existing rollout serialization, including legacy numeric compacted-window IDs.
## Testing
- Add `codex-history` tests for rollout JSON round trips, compacted-history compatibility, persisted history modes, and multi-agent version selection.
GitOrigin-RevId: 944daa9297ddd231d3aebbdcb05fff4adf8b4e1b
## What changed
- Reject patches containing multiple operations whose paths resolve to the same file, such as `duplicate.txt` and `./duplicate.txt`.
- Preserve support for patches that update multiple distinct files.
## Testing
- Add CLI integration coverage for distinct updates and duplicate resolved paths.
GitOrigin-RevId: 0fb7f69ae31acc5c677268ffd9e38ad8d8314276
## What changed
- Cover non-blocking credential probes when the file or secrets store is locked, including retaining only a matching prior credential snapshot and recovering after the lock is released.
- Extend the streamable HTTP OAuth round trip to verify that user turns continue during store contention, newly discovered servers recover after contention, and logged-out servers do not reuse authenticated connections.
- Cover reconciliation of authentication failures and effective `Authorization` headers.
GitOrigin-RevId: 8e377644001bd0be04dc9f79841080094d09d199
## Why
Standard MCP forms can require user-entered values even when tool permissions are
otherwise auto-approved in full-access sessions.
## What changed
- Recognize the `openai/standard-form-input` client extension and surface
non-approval forms in full-access, user-initiated root threads.
- Keep approval forms, automation and subagent threads, headless sessions, and
clients without the capability on their existing decline or review paths.
- Treat the capability as client-only so it is not advertised to MCP servers,
and enable it after session startup so required servers cannot block startup
waiting for form input.
## Testing
Add unit and app-server coverage for accepted form round trips, declined cases,
approval metadata safeguards, resumed threads, and extension filtering.
GitOrigin-RevId: 053bfe397a5c79eceef90a81d13e2aca6353af43
## What changed
- Rename `EnvironmentConfig` to `TurnEnvironmentConfig` to make its scope explicit.
- Rename the corresponding `SessionConfiguration` accessor and update all call sites.
GitOrigin-RevId: f47d745566199e699bd8e7c671c313eaf3bba79e
## What changed
- Send Unix `execve` approvals intercepted by the zsh fork through the shared approval pipeline, including permission hooks, Guardian review, user prompts, and telemetry.
- Resolve the active turn and its auto-review setting when an intercepted command needs approval, so commands sent to persistent terminals use the current turn's reviewer.
- Give each intercepted command a distinct approval ID and propagate an aborted approval as a turn abort.
## Testing
- Cover Guardian review for intercepted `unified_exec` commands and persistent terminals across turns.
- Verify repeated identical intercepted commands receive separate user approvals.
GitOrigin-RevId: e6cccf160637e4246aff4714c22f08c90b65306d
## What changed
- Set `CODEX_SESSION_ID` to the shared root-session ID for shell tool calls,
unified exec processes, and user shell commands.
- Preserve `CODEX_SESSION_ID` when restoring a shell snapshot, alongside the
existing runtime-owned environment variables.
GitOrigin-RevId: 5228867d25507105c7edf11607a8298958c3b917
## What changed
- Restore a V2 agent's inherited environment selections when reloading its
thread after residency eviction.
- Keep the restored execution environment and its tools available when the
agent receives a follow-up task.
## Testing
- Add an integration test that evicts and reloads a V2 agent, then verifies
its environment selection and `exec_command` tool are preserved.
GitOrigin-RevId: a5d4ad0fa465c717b32b7ae6807486429187a41d
## Why
The plugin and skill test suites were excluded wholesale on Windows, even though
most cases do not depend on POSIX behavior.
## What changed
- Make generated TOML and JSON fixtures escape Windows paths correctly.
- Use Windows-safe path canonicalization and normalize advertised skill paths.
- Select test environments through the environment-aware builders.
- Run the suites on Windows while narrowly skipping cases that execute POSIX
commands or require matching host and executor path conventions.
GitOrigin-RevId: aadf31013c2bf9bac728adc4dd96f572d4a3bf3f
## What changed
Add the `codex.turn.unified_exec.running_processes` counter and increment it
by the number of background terminal processes remaining when a turn finishes.
GitOrigin-RevId: 82a33b89533960d86cef95360fa122836c8aa84d
## Why
A single `skills/list` request should use one view of shared skill roots across
all requested workspaces while still applying each workspace's skill rules.
## What changed
- Add a request-scoped host skills view that reuses non-plugin root snapshots
across `cwd` entries without persisting them across requests.
- Resolve user-scoped plugin skill roots once per request, then apply workspace
skill configuration separately for each `cwd`.
- Make `forceReload` refresh plugin roots before building the request-scoped
view so subsequent entries see the refreshed skills.
## Testing
Expanded `skills/list` and host skills service tests to cover multiple ordered
workspaces, per-workspace skill rules, request-local snapshots, cached results,
and forced plugin-root refreshes.
GitOrigin-RevId: eedd3a4c3e213b7f30df6cacd3adf23ba2967437
## What changed
- Make `package` the only required argument to `skills.read`, resolving the
owning orchestrator or executor catalog automatically.
- Default omitted `resource` values to the package's main `SKILL.md`.
- Render orchestrator skills as package locators and instruct the model to read
them directly without first calling `skills.list`.
- Update skill extension and app-server coverage for direct main-resource
reads, referenced resources, aliases, and the revised tool schema.
GitOrigin-RevId: 9faf57a8d0935566a15094931eaabaa8f0613e9e
## Why
Building a prompt cloned every model-visible `ToolSpec`, even though the tool
set is immutable for the lifetime of its router.
## What changed
- Store model-visible tool specs as an `Arc<[ToolSpec]>` in `ToolRouter` and
`Prompt` so prompt construction only clones the shared pointer.
- Keep separately built routers on distinct shared slices so refreshed tool
sets remain independent.
## Testing
Extend router tests to verify allocation sharing within a router, allocation
separation across rebuilt routers, and the existing deferred-tool filtering.
GitOrigin-RevId: 1e04cd7c4d1b3fa0b494c5c51670232d38ba8ebb
## What changed
- Add the `apply_patch_preserve_line_endings` feature, disabled by default, to
preserve CRLF, CR, and mixed line endings when `apply_patch` updates files.
- Apply the feature consistently to built-in patch handling and patches invoked
through shell, user-shell, unified-exec, and app-server command execution.
- Keep the active feature configuration authoritative over inherited, shell
snapshot, and client-provided environment values.
## Testing
- Cover line-ending behavior with the feature enabled and disabled for custom
tool calls, shell heredocs, command execution, and the `apply_patch` CLI.
GitOrigin-RevId: 531a7c66761959c650270559f57941929f03e6c4
## What changed
Read `allow_prefix_rules` from the turn attached to the active step context
when selecting the exec policy and constructing unified exec approval requests.
GitOrigin-RevId: d2d26e88b9cefa28bb2df5b9f71aa7b30b7ea331
## Why
Deferred environments can become ready after a turn starts. Guardian approval
reviews must use the environment selected for the current step so their working
directory and permission context are not taken from the stale turn snapshot.
## What changed
- Carry `StepContext` through tool execution and approval handling.
- Add a Guardian review context that pairs the parent turn with the current
step's environment snapshot.
- Use that snapshot for Guardian prompts, reviewer sessions, and delegated
reviewer threads while retaining turn-level fallbacks for callers without a
step context.
## Testing
Added an integration test that makes a deferred remote environment ready before
an escalated command and verifies Guardian receives that environment's working
directory and denied-read policy instead of the initial local environment's.
GitOrigin-RevId: 779096bc7d0e0c7453a009c02141029714b9b407
## Why
Model-reachable child processes should not inherit Codex launch context.
## What changed
- Treat `OPENAI_FEDERATION_RULE_ID` and `OPENAI_IDENTITY_TOKEN_FILE` as non-inheritable environment variables, with case-insensitive matching.
- Remove them after shell environment policy overrides and before spawning commands across execution, MCP, hooks, Git helpers, and remote helper processes.
## Testing
- Cover inherited and explicitly configured variants, including mixed-case names.
- Verify the variables are absent from real child environments and app-server command and process execution.
GitOrigin-RevId: 2535527893985fef0995617f4c5b2462bea7c136
## Why
Hook configurations can mark command handlers as asynchronous, but Codex previously skipped those handlers outside `SessionEnd`.
## What changed
- Run asynchronous command hooks in the background with a per-session concurrency limit, while keeping `SessionEnd` hooks synchronous.
- Prevent asynchronous hooks from blocking, stopping, rewriting, or otherwise controlling the operation that launched them.
- Deliver warnings and additional context at safe turn boundaries: inject results into an active turn after sampling, or buffer them ahead of the next user prompt when the session is idle.
- Preserve in-flight hooks across configuration reloads, scope spilled output to the thread, and abort outstanding work during session shutdown.
## Testing
Add unit and integration coverage for background scheduling, concurrency, output parsing, active and idle result delivery, configuration reloads, and shutdown cleanup.
GitOrigin-RevId: 8094552e4afe7b47b09a61bb575bb20f4e491d8d
## What changed
- Filter saved `allow` prefix rules from the execution policy for cyber-specialized models and models listed in `auto_review.ignore_rules`, while preserving prompt, forbidden, network, and host-executable policy entries.
- Apply the filtered policy consistently to permission instructions, shell commands, unified exec, and the zsh-fork backend.
- Limit cyber-model command approvals to one-time decisions without proposing reusable policy amendments. General models continue to honor saved prefixes, including after switching models within a thread.
## Testing
- Add policy-level coverage for filtering allow-prefix rules while retaining restrictive and network rules.
- Add end-to-end coverage across shell and unified exec paths, zsh-fork execution, user and automatic review, and model switching.
GitOrigin-RevId: f3bd3872424291b12354ec415f33986ec369a368
## What changed
- Add the under-development `guardian_reuse_parent_compaction` feature.
- Restart Guardian review sessions after parent history rewrites and seed them with the latest encrypted compaction that has a response item ID.
- Keep the existing reviewer when a rewritten history has no reusable compaction, preserving authorization and restriction context held by that session.
## Testing
- Cover reuse-key invalidation and compaction eligibility.
- Verify review-session behavior across parent compaction and a subsequent summary-free history reset.
GitOrigin-RevId: 891805d3c3dca34ddda6e3bfc5097be4ff164267
## What changed
- Add the managed `auto_review.required_on_models` requirement, unioning model slugs across requirement layers and exposing the result through `configRequirements/read`.
- Force listed models to use `on-request` approvals with the `auto_review` reviewer. Downgrade Full Access to workspace-write when starting a protected session, and reject incompatible runtime overrides or use when automatic review is disabled.
- Preserve these protections across thread starts, resumes, forks, model changes, turn overrides, MCP approvals, and TUI session attachment.
## Testing
- Add coverage for layered model requirements and exact provider-alias matching.
- Add app-server tests for protected thread lifecycle operations, unsafe setting overrides, legacy thread upgrades, disabled automatic review, and requirements API output.
GitOrigin-RevId: c4b1d52c3b5b75e86880725412b8f0812e0dfcd9
## What changed
- Add the effective permission profile as `sandbox_mode` in turn metadata for regular, prewarm, compaction, and detached memory requests.
- Reserve `sandbox_mode` so client-provided metadata cannot override the computed value.
## Testing
- Cover metadata headers and request bodies for read-only and danger-full-access modes.
GitOrigin-RevId: 13c690cc99bc2691023f281ca527af049bb1286f
## What changed
- Move `SkillLoadOutcome` and its implicit-path indexing into
`codex-skills-extension`.
- Import shared skill types directly from `codex-skills` and keep the skill
prompt size limit with the extension renderer that uses it.
- Remove `codex-core-skills` from the Cargo workspace and dependent crates.
GitOrigin-RevId: 4e9e84909fa2f692bcc94af990bb4671affd776f
## What changed
- Add `HostSkillsSnapshot::load_skill_prompts` so the skills extension owns reading and rendering selected host skills.
- Keep explicit invocation telemetry, unreadable-skill warnings, plugin prompt ordering, and suppression of host prompts superseded by provider prompts.
- Remove the legacy prompt injection and fragment implementation from `codex-core-skills`.
## Testing
- Cover prompt truncation without an installed skills extension, skill/plugin ordering, selective provider supersession, unreadable skills, and contextual fragment detection.
GitOrigin-RevId: 9c8b84ad54b90d174abc287ab49cc5a231e9e1aa
## What changed
- Stop adding `code_mode_tool_names` to Responses Lite turn metadata.
- Keep `code_mode_tool_names` reserved so client metadata cannot reintroduce the removed, unbounded inventory.
- Use the opt-in `tool_namespaces_info` metadata, including each function's `code_mode_name`, when authoritative tool details are requested.
## Testing
- Update Responses Lite and code-mode tests to verify the opt-in namespace metadata and normalized code-mode names.
GitOrigin-RevId: cbfb9af984de71c7cc175d0cd47ae799a5275309
## What changed
- Add opt-in `tool_namespaces_info` metadata for Responses Lite turns when
`tool_registry.turn_metadata_includes_tool_info` is enabled.
- Describe each model-visible function's namespace, direct and deferred
exposure, Code Mode name, and harness or MCP ownership.
- Reject visible namespaces shared by different owners when strict collision
checking and tool inventory metadata are enabled.
- Keep tool inventories out of compatibility headers and metadata sent to MCP
servers.
## Testing
- Cover opt-in behavior, MCP exposure details, namespace ownership collisions,
reserved metadata handling, and Responses Lite request serialization.
GitOrigin-RevId: 6a6965d2ba98e29444fdfbb4ccec6aafcf0391e6
## Why
Long executor and orchestrator resource identifiers can consume enough of the
skills context budget to omit otherwise available skills.
## What changed
- Add source-aware root aliases for executor, orchestrator, and host skill
catalogs, including catalogs with a single shared root.
- Select the best combination of aliased catalogs under the shared metadata
budget while accounting for root tables and alias usage instructions.
- Explain how to expand shortened `skill://` locators and accept the resulting
description-shortening warning in app-server coverage.
## Testing
- Add rendering and production-turn coverage for singleton, executor,
orchestrator, host, and combined catalog aliases.
GitOrigin-RevId: c1bc1f3d371eae9526232674060235272cc28f16
## What changed
- Add lifecycle-backed gauges for in-flight and queued app requests, pending server requests and mailbox messages, active turns, and live MCP connections.
- Register each gauge on first use and decrement it when the tracked work or resource is dropped.
- Document the new `server/diagnostics` gauge names and account for the diagnostics request itself in the response example and test.
GitOrigin-RevId: 4bb82a3918af0b502d149b5d761ad669b2083f39
## What changed
- Classify HTTP connection failures separately from other network errors without exposing request URLs.
- For sampling requests, retry connection failures with exponential delays from 5 to 60 seconds and show a `Reconnecting... waiting for network` stream error.
- Preserve the normal stream retry budget while waiting for the provider to become reachable. Keep the existing bounded retry behavior for other retryable errors.
## Testing
- Verify connection errors are classified without leaking URL contents.
- Verify a turn recovers after its provider becomes reachable and still applies the configured retry limit to a subsequent incomplete stream.
GitOrigin-RevId: 646553290c865a1332abd30c4a64ed9266bbfc6f
## Why
Interrupting a turn should also stop code-mode work that the turn left running.
## What changed
- Add the disabled-by-default `code_mode_interrupt` feature.
- When an interrupted turn has the feature enabled, terminate all active code-mode cells and propagate cancellation through nested tool calls.
- Keep the reusable code-mode session alive so its stored state remains available to later turns.
## Testing
Add an integration test that interrupts a long-running nested tool, verifies that active and background cells are removed, and confirms that session state is preserved.
GitOrigin-RevId: 2b8634776a89b636318a39b9e9ad2eefc07cead8
## What changed
- Preserve executor-native working directories, workspace roots, and permission profiles when preparing remote `exec_command` requests instead of resolving them through the host platform.
- Send sandbox intent to the remote executor, including a restricted-token default for Windows executors and `-NoProfile` for elevated PowerShell commands.
- Reject intercepted cross-platform `apply_patch` commands when filesystem writes are restricted, while continuing to allow them for unsandboxed or full-disk-write profiles.
## Testing
Extended remote unified-exec coverage for foreign Windows workspaces, elevated PowerShell, sandbox metadata, and restricted and unrestricted intercepted patches.
GitOrigin-RevId: 9fd328879fa2c15594fd58e40b6b32e8ba0847e7
## What changed
- Add the tool call ID to `_meta.callId` for every MCP tool request.
- Rename `features.tool_registry.include_tool_metadata` to
`features.tool_registry.turn_metadata_includes_tool_info` to clarify that the
setting controls authoritative tool information in per-turn metadata.
- Update config parsing, schema generation, and session config locking for the
renamed setting.
## Testing
- Cover `callId` metadata for custom, plugin, and Codex Apps MCP calls.
- Update strict-config, config-loading, feature-config, and config-lock tests for
the renamed setting.
GitOrigin-RevId: ac0e58c489b03bd9b55a356f545de86c8ecaf865
## What changed
- Define skill config selectors, ordered rules, and layer-stack parsing in `codex-config`.
- Resolve disabled skill paths from generic skill name/path pairs, so configuration logic no longer depends on `SkillMetadata`.
- Update plugin and host skill consumers to use the `codex-config` API and consolidate the rule tests with the skill config tests.
GitOrigin-RevId: 3fe67869708df2652befe28d58cdeba933256f84
## What changed
- Remove the unused `core-skills` client for listing and exporting remote
skills.
- Remove its `codex-core-skills` and `codex-core` exports and dependencies that
are no longer needed.
GitOrigin-RevId: 747f760dc97da3d4dea10d619a2341f43410d0bf
## What changed
- Use `HostSkillRoot` throughout host root resolution and loading, including plugin roots.
- Remove the duplicate loader, root snapshot, and product-filtering implementation from `core-skills` now that loading is owned by the skills extension.
- Move and expand loader coverage for discovery, namespaces, filesystem routing, root merging, symlinks, and frontmatter parsing.
## Testing
- Added focused unit and integration tests under `ext/skills` and `skills` for the consolidated loader behavior.
GitOrigin-RevId: 214d06d59bf3033ee0f220ea5959ee4feff66782
