## What changed
- Register a tool lifecycle contributor when Guardian V2 is installed.
- On tool start, asynchronously ask the existing Luna sampler for a low-effort
`action_risk` score constrained to the range from `0.0` to `1.0`.
- Bound the tool metadata supplied to the classifier and treat it as untrusted
input.
- Emit an extension warning if classification sampling fails.
## Testing
Add an integration test that verifies the contributor reuses the configured
Luna pool and sends the expected model, attribution metadata, reasoning effort,
strict output schema, and tool-call context.
GitOrigin-RevId: 6b69fcc0443086544086849c38bcdd90560a291f
## What changed
- Prewarm two Responses WebSocket connections and grow the pool on demand, up to eight connections, so overlapping samples can run concurrently.
- Lease each connection to a single sample and return healthy connections to the idle pool after completion.
- Replace closed or 55-minute-old connections and retry a sample once after a retryable or stream error.
- Keep the sampler available when the second prewarm connection cannot be opened.
## Testing
- Cover connection reuse, partial prewarm success, concurrent pool growth, and retrying an expired connection on another warm connection.
GitOrigin-RevId: 3ee7b05adc00a2135ba7cb35f6e4455199bf3784
## What changed
- Add a shared, read-only `ConversationHistorySnapshot` capability to the extension API.
- Include the snapshot in `ToolStartInput`, preserving conversation order while excluding contextual user messages.
- Avoid acquiring a history snapshot when no tool lifecycle contributors are registered.
## Testing
- Verify snapshots share existing response items, remain stable as history changes, and filter contextual user messages.
- Verify tool-start callbacks receive the history available for successive tool calls.
GitOrigin-RevId: 822cae33781dd876ea628f104be08d8a449a4900
## What changed
Rebuild the tracing callsite interest cache after installing the test-local
subscriber so the `event_enabled!` assertion uses that subscriber's filters.
GitOrigin-RevId: d221dca4d7e7cb2ddd492a46f7a9d5c977088593
## Why
Serde's generic buffering for flattened and internally tagged fields is incompatible with `serde_json`'s `arbitrary_precision` representation. As a result, persisted rollout items containing nested floating-point values can fail to decode.
## What changed
- Decode the rollout envelope at the JSON persistence boundary before deserializing the item payload.
- Use the shared decoder for both session resume and thread-history projection.
- Cover token-count floats, response-item metadata, field ordering, and ignored metadata in the decoder compatibility test.
GitOrigin-RevId: 59c7f6fbcf83162b5ed6980a69381fe45fc20a0a
## What changed
- Capture accepted, successful `node_repl` results from Code Mode and include them as bounded, untrusted evidence in Guardian review prompts.
- Enable the enhanced transcript through `guardian_enhanced_node_repl_transcripts` or when the selected model requires automatic Node REPL review.
- Keep this evidence out of the parent model history, exclude encrypted and failed results, and avoid resending admitted evidence when a Guardian session is reused.
- Clear retained evidence and invalidate review sessions when a thread is rolled back.
## Testing
- Add unit coverage for evidence ordering, escaping, truncation, and empty responses.
- Add an integration test covering feature-disabled, feature-enabled, and model-required behavior, including filtering and review-session reuse.
GitOrigin-RevId: edc3dca5d5b88d472a492f35531ec46889a89d72
## Why
Sandboxed descendants can outlive their immediate parent and must be collected by
PID 1 in the Bubblewrap namespace.
## What changed
- Launch `codex-linux-sandbox` with Bubblewrap's `--as-pid-1` option, and fall
back to the bundled Bubblewrap when the system version does not support it.
- Run the sandboxed command as a child, forward signals to it, reap other exited
descendants, and preserve the command's exit status.
- Verify proxy bridge parent identity when arming its parent-death signal.
## Testing
Added Linux sandbox coverage for the filtered namespace reaper, orphan
collection, and fallback from an incompatible system Bubblewrap.
GitOrigin-RevId: 379f08d6c2732ea0a4caeb61f93ae302e16d2458
## Why
Hooks supplied as managed requirements must not be silently skipped when their
handlers cannot be loaded.
## What changed
- Fail session and app-server thread startup when an enabled managed requirement
contains an invalid matcher, an empty command, or an unsupported handler type.
- Keep load failures for ordinary managed configuration hooks as warnings, and do
not enforce managed hook requirements while the hooks feature is disabled.
## Testing
Added hook-engine, core session, and app-server coverage for valid and invalid
managed hook requirements.
GitOrigin-RevId: 91a23b0c1d85e143aba6aabe874c5274e52fc6b2
## Why
Project-local configuration can launch host processes. Requested write access may be reduced to read-only by managed constraints or platform support, so the request alone must not cause the app server to trust a project and load its configuration.
## What changed
- Base automatic project trust on the effective permission profile after configuration is loaded.
- Trust managed profiles only when their effective filesystem policy allows writes to the working directory.
- Continue resolving trusted nested working directories to the repository root.
## Testing
- Verify that managed read-only permissions neither persist project trust nor load a project-local MCP server when workspace-write access was requested.
- Cover effective read-only fallback for workspace-write requests and nested repository working directories.
GitOrigin-RevId: e548fd9c4552c328f779cc0365fe86f37d4a9b71
## What changed
- Rework the bundled `skill-creator` guidance around concise, scoped instructions, progressive disclosure, optional resources, invocation policy, and risk-based forward-testing.
- Simplify generated skill and reference templates so new skills start with only the placeholders and resources they need.
- Reject unfinished `[TODO: ...]` placeholders in skill descriptions and instruction bodies while allowing examples inside fenced code blocks.
GitOrigin-RevId: b0871aaeeb768c12b1a467d48037eecc8db5d52b
## Why
Structured output can be complete before the Responses stream emits its terminal
events. Waiting for those events unnecessarily delays the sampler and can leave it
waiting after usable output has arrived.
## What changed
- Return a Luna sample as soon as accumulated text deltas parse as a complete JSON
object.
- Continue draining the remaining response events in the background so the
authenticated WebSocket stays reusable for subsequent samples.
- Enforce the output-size limit while accumulating deltas on the early-return path.
## Testing
- Cover returning complete JSON without terminal response events.
- Verify that early return still allows the authenticated WebSocket to be reused.
GitOrigin-RevId: 80c9963f1540f7862356aaad3503e3071a8fb92a
## Why
Awaiting a bounded consumer event queue can stall the in-process app-server
worker when notifications are not being drained, preventing it from delivering
a request response queued behind them.
## What changed
- Use an unbounded queue for caller-facing in-process events while keeping
command and embedded-runtime queues bounded.
- Preserve all events in order instead of dropping best-effort events and
emitting lag markers when the consumer queue fills.
- Document that callers can await requests without concurrently draining
notifications.
## Testing
Add a regression test that fills a capacity-one client with unread settings
notifications, verifies subsequent requests complete, and then confirms the
notifications remain readable in order.
GitOrigin-RevId: 6ca6cfb9349dfa04a613236836f813c1f799783e
## Why
Terminal autowrap for oversized URL tokens can drop the user-message gutter and background on continuation rows.
## What changed
- Explicitly wrap long URLs within the available message width.
- Preserve the complete OSC 8 hyperlink destination on every wrapped fragment.
- Keep the user-message gutter and background styling across continuation rows.
## Testing
Add history-cell and VT100 coverage for URL content, hyperlink targets, gutters, and backgrounds across wrapped rows.
GitOrigin-RevId: 59514eee4ab967bd937b55574b9f8d0d1c82df7c
## Why
Guardian review sessions must not gain access to paths that the parent turn is
not allowed to read.
## What changed
- Derive Guardian permissions by intersecting managed parent filesystem rules
with read-only access, preserving denied paths and restricting network access.
- Offer Guardian execution tools only when a managed sandbox can enforce those
rules.
- Include the selected environment IDs in the review-session reuse key so a
session is not reused across different environment sets.
## Testing
Update the Guardian reuse integration test to verify that a review cannot read
a parent-denied file or write a local file while consecutive reviews still
reuse the same session.
GitOrigin-RevId: 20f17a6c379f1eda651e8508459d642a51e4ce94
## What changed
- Add a `LunaSampler` that opens an authenticated Responses WebSocket and reuses it for structured, tool-free `gpt-5.6-luna` requests.
- Carry the host's provider, authentication, proxy, attribution, and service-tier configuration into the connection and requests.
- Require strict JSON schemas, preserve per-request reasoning effort and turn metadata, and reject missing or oversized output.
## Testing
- Add a WebSocket test covering authentication and attribution headers, connection reuse, structured request fields, per-turn metadata, reasoning effort, and returned output.
GitOrigin-RevId: aef85fd8ddcfcb7c76a9ede0d3191e3a0321656b
## What changed
- Add a `SecurityRiskScore` rollout item containing a category and numeric score.
- Persist the item in both thread history modes while excluding it from model context, user-visible thread history, search text, forks, and reconstructed conversation history.
- Re-export the score type from the extension API.
## Testing
- Cover serialization, persistence and loading, thread history projection, session reconstruction, append planning, and memory filtering.
GitOrigin-RevId: 1926fe366aeaa75052708a6da589f45a38eefb52
## What changed
- Send the scripted HTTP response before queuing body deltas in the
single-stream byte-budget test.
- Allow 30 seconds for barrier requests in both byte-budget tests while
retaining the default timeout for other operations.
GitOrigin-RevId: ac65580b479d93fcbcca787f15e04c084f0aa56b
## What changed
- Add dedicated coverage for explicitly starting a queued item that a prompt hook rejects.
- Verify the rejected item is consumed and no model request is sent.
- Keep the automatic queue dispatch test focused on consuming a rejected item while allowing later queued input to proceed.
GitOrigin-RevId: e01cefb9d8581b0d4be05d4595f279d61e628e83
## What changed
- Collect borrowed call IDs in a single pass instead of cloning IDs across
separate sets.
- Record orphan positions and compact the history only when orphan outputs are
present, while preserving the existing matching and error behavior.
GitOrigin-RevId: de399ba92ff451cb12fc69218d60d3ac29fccb3d
## Why
Streaming reads previously rejected requests that used a platform filesystem
sandbox.
## What changed
- Open streamed files in the sandbox helper and return the open file to the
exec-server by passing a file descriptor on Unix or duplicating a file handle
on Windows.
- Advertise support through the `sandboxedFileStreaming` environment capability.
- Preserve close-on-exec behavior for transferred descriptors, including the
required inherited-descriptor cleanup on macOS.
## Testing
- Cover bounded sandboxed streams, continued reads after path replacement, and
rejection of symlink escapes outside readable roots.
GitOrigin-RevId: 677b2444b74e834b78b87a8554bc119c1c6e08b2
## What changed
- Add the `codex-guardian-v2` crate with an extension install entry point that does not register contributors yet.
- Register the crate in the Cargo workspace and add its Bazel target.
GitOrigin-RevId: 7c0c9479c6722d65f0f0dad9b0fd4a756e4649b3
## What changed
- Use a never-resolving promise when verifying that a session continues to
enforce its yield limit after terminating a cell.
- Use `yield_control()` to create the yielded cell in the notification-draining
test instead of relying on timer scheduling.
GitOrigin-RevId: 01cdaa94e5b8b5c89c6fa98c4bbdb28a690678e0
## Why
Inline visualization viewer documents must remain outside locations that a
sandboxed session can modify before they are opened in a browser.
## What changed
- Materialize viewer documents in a dedicated cache under `CODEX_HOME`, keyed
by the source and artifact thread IDs, instead of alongside visualization
artifacts.
- Create visualization links only when the active filesystem policy cannot
write to the viewer cache. This also disables links for full-disk-write
sessions and applies the policy consistently when loading transcript history.
- Reject viewer cache paths containing symbolic links and track materialized
documents in memory so unchanged viewers are reused without trusting existing
file contents.
## Testing
- Verify that rendering an unchanged visualization reuses the existing viewer
file, while an updated fragment refreshes it.
GitOrigin-RevId: 12b7fbe522a68076e5d683a987b7801940d131c2
## What changed
- Add `RecoverTurnRequest` and `CodexThread::recover_turn_if_idle` to resume an interrupted regular turn with its existing turn ID and updated thread settings.
- Treat recovery separately from automatic idle work so it can resume in Plan mode without injecting an empty user message.
- Reject recovery while another turn is active without applying settings or queuing input.
## Testing
- Cover successful Plan-mode recovery, turn ID preservation, and the absence of an empty user message.
- Cover active-turn rejection and verify that it leaves settings and pending input unchanged.
GitOrigin-RevId: 2376fdc78b5d48b571633981960741ba269ab1ef
## What changed
- Represent blocked network requests as approval actions so permission hooks,
automatic review, and user review use the common approval flow.
- Route network requests using the active turn's review settings, including for
background terminals started by an earlier turn.
- Record the final applied network decision in tool telemetry without exposing
the destination or assigning an approval source.
- Persist deny amendments and keep the blocked request denied.
## Testing
Added coverage for strict automatic review, cross-turn background network
requests, deny amendment persistence, and destination-safe telemetry.
GitOrigin-RevId: a2a9d106962f407ed93f4d198f40ced15f090b8e
## What changed
- Add `ThreadStore::revert_thread` to retain history before a selected turn by creating a new immutable rollout and atomically switching the thread's stored rollout path.
- Preserve the logical thread ID and session metadata across repeated reverts.
- Track every rollout owned by a thread so archive, unarchive, and delete operations handle the complete lineage and restore moved files when metadata updates fail.
- Prevent deletion when forks still reference any rollout in the thread's lineage.
## Testing
- Cover repeated reverts, compressed source rollouts, lifecycle operations over reverted histories, reference-aware deletion, and cross-process unarchive locking.
GitOrigin-RevId: 1c05a6db3d0036ee91b562263d7ca200c6a0ea71
## What changed
- Delete the unused standalone `apply_patch` instruction template and its
`codex-prompts` export.
- Simplify prompt-caching coverage to assert that requests use the model's base
instructions.
GitOrigin-RevId: 8c0dc9426d9ac0184d587272622db608a75e8436
## What changed
- Accept root `http://` and `https://` URLs in `--code-mode-host` and use the
shared gRPC session provider for those endpoints.
- Keep `ws://` and `wss://` URLs on the existing WebSocket transport.
- Reject paths, queries, fragments, and credentials where unsupported, without
exposing gRPC URL credentials in command-line validation errors.
## Testing
- Cover argument parsing and transport selection for both remote protocols.
- Exercise a gRPC host shared across app-server threads and verify credential
rejection does not disclose usernames or passwords.
GitOrigin-RevId: b6516a85cf76db5c4cea620f89ef866d8af30cf0
## What changed
Declare `codex-execpolicy` as a dev dependency of `codex-protocol`, matching
its use exclusively by tests.
GitOrigin-RevId: a19c18fc89a04560d80b16e2e530abb633d1ee35
## What changed
- Resolve manifest-declared metric operations against the executor filesystem for remote plugin commands.
- Create the measurement sidecar in an executor-native, owner-private temporary directory, stream its bounded output back for validation, and clean up the directory afterward.
- Extend the exec-server protocol with the executor temporary directory and atomic private-directory creation.
## Testing
- Cover remote unified-exec measurements for foreground and background commands.
- Verify private directories use owner-only permissions on Unix and fail closed on unsupported platforms.
GitOrigin-RevId: dbbd0a84717b91237fc5728e510e18994eb46dd4
## What changed
- Add `thread-credits` and `estimated-thread-cost` items to the configurable
status line and terminal title for Enterprise workspaces.
- Fetch one shared thread usage estimate only when either item is selected,
omit unavailable values, and refresh the display after turns complete.
- Preserve the last nonzero estimate while usage settles, with bounded delayed
refreshes and retries for transient failures.
## Testing
- Add coverage for configuration, rendering, previews, plan availability,
replay handling, retries, and post-turn settlement.
GitOrigin-RevId: dd69ee621c5bca0e5d9edd32b2bba42487eb1500
## What changed
- Extend `account/usage/read` with an optional `threadId` request and a
backward-compatible `threadUsage` response containing estimated credits,
optional USD cost, and model, reasoning, speed, and token breakdowns.
- Fetch thread usage for eligible Business and Enterprise plans when `/status`
is opened, then update the rendered status card asynchronously.
- Preserve terminal scrollback when replacing a visible status-card tail, and
append a refreshed card when the original tail can no longer be updated.
## Testing
- Add app-server coverage for authentication, canonical thread IDs,
unavailable billing routes, and malformed IDs.
- Add TUI coverage for usage formatting, stale responses, retries, history
updates, terminal reflow, and scrollback preservation.
GitOrigin-RevId: 49300914b3fba917c0f08e8595363e04e5ba6d37
## What changed
- Load `proto_library` for the code-mode protocol directly from the
`com_google_protobuf` repository.
- Remove the now-unneeded direct `rules_proto` module dependency.
GitOrigin-RevId: 5a01191b2c46c7fafd263ed93f153a878b09aaa8
## What changed
- Add end-to-end tests for curated plugin measurements through classic shell execution and unified exec.
- Cover unified background commands whose measurements arrive after the turn completes.
- Verify command attribution and measurement payloads, including values, dimensions, execution IDs, and thread, turn, and item IDs.
GitOrigin-RevId: 866103aafef8d3454123c40aee7041912ad0b7fc
## Why
Unified exec can yield while a command is still running. Plugin measurement
collection must remain active until that background command exits, including
when its item completion arrives after the turn has completed.
## What changed
- Keep the plugin metrics sidecar with the stored process and let either the
exit watcher or a poll that observes completion finalize it exactly once.
- Retain completed turn analytics state while tool items are pending so late
command completion events can be emitted without duplicating the turn event.
## Testing
- Verify that a background command completed after its turn emits a command
execution event and does not emit a second turn event.
GitOrigin-RevId: ecf715b3e047aa29ca9a417d12d955257fed8557
## What changed
- Add `TurnInputRequest` and typed submission results for atomically starting a turn, steering the active turn, or declining input with a specific reason.
- Expose `start_or_steer_turn`, `start_turn_if_idle`, and `steer_turn` on `CodexThread`, and migrate Core consumers to these APIs.
- Make app-server `turn/start` steer an active regular turn and return that turn's ID. Reject incompatible output schemas and non-steerable turns without applying settings or enqueueing input.
## Testing
- Cover concurrent start-or-steer submissions, accepted and rejected settings updates, output-schema compatibility, idle-start rejection, and app-server steering.
GitOrigin-RevId: dd9b5528d76ec650c019e97af420bc13190ea86a
## Why
World-state snapshots and merge patches are keyed collections of sections. Allowing
their persisted `state` field to contain any JSON value required replay code to
handle shapes that cannot represent world state.
## What changed
- Type `WorldStateItem.state` and snapshot patches as JSON object maps.
- Reconstruct full snapshots directly from those maps and apply patches without
fallible arbitrary-value conversions.
- Regenerate the app-server protocol schema for the object-only representation.
GitOrigin-RevId: 3d7662b74f3dd1f3ccc5fdd0200074c13a73cbe5
## What changed
- Add fractional Unix creation times to locally authored user, developer, agent, and tool-output items when they enter durable conversation history.
- Preserve any creation time already supplied with an item across subsequent requests, remote compaction, and resumed history.
## Testing
- Cover timestamp assignment and preservation in session, client, tool, agent-spawn, and remote-compaction tests.
GitOrigin-RevId: 431d1770b9746005c808bc0a43953845166d68ad
## What changed
- Add `Client::get_thread_usage` for querying authoritative estimated credit
and dollar usage for a thread across both supported backend path styles.
- Expose usage totals and optional model, reasoning effort, speed, and token
breakdowns through `ThreadUsage` and `ThreadUsageBreakdownGroup`.
- Reject responses that do not include the requested thread.
## Testing
- Cover endpoint paths, request serialization, complete and partial usage
responses, and mismatched thread IDs.
GitOrigin-RevId: 16c83590b2c804e0182b4493cf2aa39206029c77
## Why
Executor-backed skills can include bundled scripts, so skill readers need the
skill directory in the executor filesystem to locate them.
## What changed
- Add `skill_root` to `skills.read` responses for executor-backed skills.
- Derive the root from the parent directory of the skill's main resource and
omit the field for other skill authorities.
## Testing
- Verify executor skill reads return the expected root for both `SKILL.md` and
a referenced resource.
GitOrigin-RevId: b7035c7e2e62155890795fb508fefe3a1c17805b
## What changed
- Try the explicitly configured Windows HTTP or SOCKS5 proxy port first, then scan the protocol's preferred port range when that port is unavailable.
- Reserve HTTP and SOCKS5 listeners independently so a SOCKS5 collision does not replace an already available HTTP listener.
- Retain ephemeral loopback fallback when all preferred ports are unavailable, and document the HTTP (`3128-3159`) and SOCKS5 (`8081-8112`) ranges.
## Testing
- Cover bounded HTTP and SOCKS5 fallback, independent listener reservation, and ephemeral fallback after preferred-port exhaustion.
GitOrigin-RevId: 002c641f5bd70fedf04cca96c65c5fee2c5ebcac
## Why
Skill catalogs can present shortened package locators, but callers previously had
to expand those aliases before reading a skill.
## What changed
- Resolve catalog aliases automatically when `skills.read` looks up a
model-visible executor or orchestrator skill package.
- Update skill prompts and tool documentation to tell models to pass the listed
package locator directly.
## Testing
- Exercise reading an executor skill through its shortened package locator when
the skills catalog exceeds its context budget.
GitOrigin-RevId: d1cdfd64002510b616146929deb5b7077850b951
## What changed
- Use each `ExternalAuth` provider's error classification for resolve, refresh,
and validation failures.
- Allow runtime providers to be replaced, clearing any recorded permanent
refresh failure after the replacement resolves successfully.
- Preserve workload identity as immutable, host-managed authentication while
sharing external ChatGPT credentials through the process-local store.
## Testing
- Cover provider replacement after a permanent failure, provider-defined error
classification, workload identity immutability, and refreshed headers after
an unauthorized response.
GitOrigin-RevId: ec75cf9224dc82d3fd10063606c724e3b06fb1e7
## What changed
- Reopen a cached code-mode session when its gRPC host stops, while
serializing concurrent reconnection attempts and coordinating shutdown.
- Scope cell IDs to the new host generation so callbacks remain consistent
and stale `wait` or `terminate` requests are rejected.
- Accept both `unix://` and `unix:` endpoints for gRPC hosts on Unix systems.
## Testing
- Cover host restart recovery, concurrent execution after reconnection,
generation-aware callbacks and cell operations, stale cell rejection, and
Unix socket execution.
GitOrigin-RevId: 548e168fdcef7f7d54bd32262e614886bf7bdd32
## Why
A single execution can trigger multiple network approval reviews. Its tool
result should reflect the latest specific rejection.
## What changed
- Let each explicit network review outcome replace the previously recorded
outcome for the execution.
- Keep generic blocked-request messages as fallbacks that cannot overwrite an
explicit review outcome.
## Testing
- Add unit coverage for outcome precedence.
- Add an integration test that rejects two network requests from one execution
and verifies that only the latest rejection is returned.
GitOrigin-RevId: 644a01e5c49855adcdc48ba8f91baededce26875
## What changed
- Create a metrics sidecar for attributed local plugin commands launched through unified exec, and grant the sandbox access to its output file.
- Publish valid measurements when the initial command exits, while discarding the sidecar when the process remains live for later polling.
- Strip inherited or configured `CODEX_PLUGIN_METRICS_OUTPUT` values so each command can only use its own sidecar.
GitOrigin-RevId: 43e669e4c77171aec8a798de0c12ca13bfb8adee
## What changed
- Provide matching local plugin commands with a sandbox-writable temporary output file through `CODEX_PLUGIN_METRICS_OUTPUT` when analytics is enabled.
- Validate successful command output against the plugin's `analytics.yaml` declaration, including measurement names, enum dimensions, finite values, duplicate rows, and size limits, before publishing analytics events.
- Keep the output path reserved from user overrides and clean up the temporary file after execution.
## Testing
- Cover output validation, limits, cleanup, sandbox permissions, environment handling, and path replacement.
- Verify measurement collection through both classic and zsh-fork shell runtimes.
GitOrigin-RevId: 88af0f87dc2f207fcbcca6af498f5c940d79349d
## What changed
- Extract `x-models-etag` from `codex.response.metadata` events and emit it as a `ModelsEtag` response event.
- Stop reading or reporting the model ETag from WebSocket upgrade headers.
## Testing
- Update the WebSocket response-stream test to deliver the ETag through a metadata event and verify that it is emitted.
GitOrigin-RevId: 9b9cff3d8a0a914549aca62d8d316483a9a47f69
## What changed
- Add `http_headers_helper` configuration for local streamable HTTP MCP servers. The configured shell command runs once per connection and returns a JSON object of headers that is cached across requests.
- Apply helper headers to MCP startup and OAuth flows while restricting them to the server origin, stopping redirects, rejecting reserved or duplicate headers, and enforcing output and execution limits.
- Reject helpers for remote or managed-disabled servers, use the local environment working directory, and redact helper commands from `codex mcp list` and `codex mcp get` output.
## Testing
- Cover configuration validation, helper lifecycle and output parsing, origin isolation, OAuth discovery and token refresh, managed requirements, environment selection, and CLI redaction.
GitOrigin-RevId: 84e0e26ce75520b0869d37c72b1678e033bd6818
## Why
`thread/revert` keeps the logical thread ID while selecting a new immutable
rollout. Using the thread ID for persisted history can therefore read or update
the wrong rollout.
## What changed
- Centralize resolution of a thread's current rollout across live writers,
SQLite metadata, and filesystem fallbacks.
- Key history materialization, lineage traversal, paging, turn lookup, and fork
boundaries by immutable rollout ID while retaining the thread ID for the
logical thread.
- Treat SQLite's selected rollout as authoritative for paginated threads so a
filesystem scan cannot select an older rollout after `thread/revert`.
## Testing
Add a regression test showing that update-ordinal item paging reads from the
selected rollout ID when it differs from the thread ID.
GitOrigin-RevId: 1101e548a6e6c6d319996e24cb650e5b03ab7fbb
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