## What changed
- Preserve `encrypted_function_args` on function calls so an empty list can mark plaintext collaboration arguments across request replay.
- Deliver `spawn_agent`, `send_message`, and `followup_task` payloads as structured plaintext agent messages when that marker is present; retain encrypted delivery otherwise.
- Redact plaintext collaboration arguments from tool and communication logs, and omit the metadata when sending requests to non-OpenAI providers.
## Testing
- Cover serialization of empty encrypted-argument metadata and plaintext versus encrypted subagent message delivery.
- Verify plaintext tool arguments are redacted and provider-specific metadata is removed from non-OpenAI requests.
GitOrigin-RevId: 64db98ff0b61a3af2f04ed609292363f2e2362a8
## What changed
- Propagate the initiating turn ID through agent spawns, follow-up tasks, reviews, and delegated Codex sessions.
- Add `parent_turn_id` to Responses client and turn metadata while keeping it out of external MCP metadata.
- Preserve parent-turn provenance across queued agent messages when their triggering parent is unambiguous.
## Testing
- Cover spawned, resumed, nested, reviewed, delegated, and WebSocket request metadata.
- Verify queued messages do not claim ambiguous or queue-only parent turns.
GitOrigin-RevId: 481fdebbe7df2031880fe259509273cce50b20a8
## What changed
- Allocate 2% of the resolved model context window to skill metadata without
imposing the previous 4,000-token ceiling.
- Keep the 8,000-character fallback when no context window is available.
- Extend catalog rendering coverage to verify that a 400,000-token context
window receives an 8,000-token metadata budget and includes more skills.
GitOrigin-RevId: 5120d462de22fbfe5f9c4ab0d1bb97e51950d4b2
## Why
Matching model ETags can arrive on every response, but a recent models cache does
not need to be rewritten each time.
## What changed
Renew the models cache timestamp only after more than half of its configured TTL
has elapsed. Matching ETags continue to avoid refetching `/models`.
## Testing
Added integration coverage that verifies a recent cache remains unchanged and an
older cache is renewed without another `/models` request.
GitOrigin-RevId: b45da3824674c6b41d982ba4a405b419b09b7715
## Why
Rendering host and executor skill catalogs independently allows their combined
metadata to exceed the skills context budget.
## What changed
- Allocate one budget across both catalogs when both contain model-visible
skills.
- Prefer retaining executor skills when budget pressure requires omissions,
while preserving an executor omission marker and reporting when all host
skills were omitted.
- Evaluate absolute and aliased host paths under the shared budget and select
the rendering that best preserves executor entries, total entries, and
descriptions, in that order.
## Testing
Added renderer and production-turn coverage for shared-budget description
shortening, host-first omission, executor omission markers, and alias selection.
GitOrigin-RevId: 30041736a76aa173cb641aa98a876a306cb437d2
## Why
Host skill catalogs supplied through extension world state should report budget warnings only when their catalog update is actually rendered.
## What changed
- Stop rebuilding an extension-owned host catalog in core.
- Emit host catalog budget warnings when the corresponding world-state fragment is rendered, and deduplicate them with executor catalog warnings.
- Cover full, shortened, and omitted host and executor catalogs, including repeated turns and resumed persisted snapshots.
GitOrigin-RevId: ba28b6e337281b49ed4da2175c193fd4a6898ab7
## Why
An agent can be registered again with restored path metadata after a root thread
resumes. Leaving its previous registry entry behind can make later lookup and
release operations act on stale metadata.
## What changed
- Add a thread-to-path index alongside the agent tree.
- Keep both indexes synchronized when root and spawned agents are registered,
replaced, moved between paths, or released.
- Preserve other restored siblings when one agent is closed, while still
allowing a surviving sibling to be reloaded for follow-up work.
## Testing
Add registry coverage for replacement, release, and path migration, plus resume
tests with multiple sibling agents.
GitOrigin-RevId: 1c1acf422884a6842d9bbdf89ba993d98187770d
## Why
A pending optional MCP server can delay the first model request even when the
turn does not need that server.
## What changed
- Give optional MCP servers a shared one-second startup grace, then omit servers
that are still pending from the captured tool catalog.
- Continue waiting when the turn explicitly requires a server through a plugin,
skill dependency, or `mcp://` mention, and preserve this behavior for input
received between sampling steps.
- Route direct resource requests to the live connection set when a pending
server was omitted from the binding, while keeping all-server resource
discovery non-blocking.
## Testing
- Cover the shared grace period and resource behavior for pending optional
servers.
- Verify plugin, plugin-skill, and direct MCP mentions wait for startup.
- Verify an Apps-enabled turn proceeds without tools from an unrelated pending
optional server.
GitOrigin-RevId: b5f895c5a5362fe73f7d33250367662d4a217e4d
## Why
When the code mode host feature was disabled, thread startup always selected the in-process provider, even when `disable_in_process_fallback` was set.
## What changed
- Select a disabled provider when both the process host and in-process fallback are disabled.
- Return a clear tool error instead of running code mode in process for that configuration.
## Testing
Added an integration test covering code mode with the process host feature and in-process fallback both disabled.
GitOrigin-RevId: 3ed80afc23e0a5518c0133fe337a37b1fa545ead
## What changed
- Add `features.multi_agent_v2.subagent_developer_instructions` to override inherited developer instructions for subagents that do not define role-specific instructions.
- Preserve role-specific instructions as the higher-precedence setting, and carry the effective instructions through full and bounded forks, compacted histories, and cold resume without duplication.
- Treat an unset override as inheritance and a blank override as clearing inherited instructions.
## Testing
- Cover configuration parsing and materialization, instruction precedence, fork modes, compaction, role application, and resumed subagents.
GitOrigin-RevId: 32321e61abc59b14a1be5f31e6bd6570bb1cd89d
## Why
Turn preparation waited for MCP discovery before requesting endpoint plugin
recommendations, adding their latencies together.
## What changed
- Prepare the MCP runtime and endpoint plugin recommendations concurrently.
- Wait for both results before building tools and starting model sampling.
- Cancel the combined preparation when the turn is interrupted.
## Testing
- Add coverage that gates MCP initialization and verifies recommendation fetching
overlaps it while the final request includes both results.
- Verify interrupting concurrent preparation prevents model sampling.
GitOrigin-RevId: 295ec268331bf05304e6b313925fd2b6c2ae4190
## Why
Curated plugin capabilities need to follow the active authentication mode, including after an account switch and when the configured model provider differs from the authentication source.
## What changed
- Select the ChatGPT, remote, or API curated marketplace from the current authentication mode, with an API marketplace fallback for ambient Amazon Bedrock credentials.
- Apply that selection consistently to plugin loading, hooks, skills, installed-plugin conflict filtering, marketplace listing, and `codex mcp` discovery.
- Start the local curated repository sync when an account change makes the remote catalog unavailable, and refresh existing thread MCP runtimes when the effective plugin cache changes.
## Testing
Added coverage for account switches, ChatGPT-authenticated Bedrock sessions, API-key MCP discovery, curated marketplace filtering, hook and skill routing, and existing-thread MCP refreshes.
GitOrigin-RevId: dbefdba3a3ea7281e7b6013e057a418770ccfc95
## What changed
- Clamp the initial `exec_command` yield time to at least 10 seconds on Windows.
- Update the tool description and unit coverage for the new effective range.
- Allow the Windows Ctrl-C integration test up to 20 seconds to complete.
GitOrigin-RevId: 65d4d1c9a89dc9979e10d3e565af61c9f632c058
## What changed
- Insert the `host_skills` world-state section before the permissions section
when permissions are present.
- Verify that skill metadata appears before `<permissions instructions>` in the
rendered developer message.
GitOrigin-RevId: e9fc62f498c384e841fc34ef679850557645f989
## Why
Windows non-TTY exec sessions reported interrupts as unsupported, so sending
Ctrl-C through `write_stdin` did not stop the running process.
## What changed
- Route interrupt requests for Windows non-TTY processes through their existing
termination callback, including pipe-backed processes.
- Track whether driver-backed Windows sessions use a TTY so PTY interrupts keep
their existing behavior.
- Consume the terminator after a successful interrupt to avoid invoking it again
when the process handle is dropped.
## Testing
Added coverage for local and remote exec-server sessions, unified exec, pipe
fallbacks, and legacy Windows sandbox processes.
GitOrigin-RevId: 34504d01f091ef57bb961e98ad5a8d9f1acee4ee
## What changed
- Forward remote managed-network policy requests to the controller-side decider when Guardian review is enabled.
- Bound callbacks using the configured permission-hook and Guardian review timeouts, restore trusted execution attribution, and recheck live baseline policy before requesting a decision.
- Cancel pending decisions when the process or execution scope ends, and propagate EOF across the sandbox proxy bridge with half-closes.
## Testing
- Cover callback enablement, strict allowlist behavior, live policy updates, trusted attribution, and execution-scope cancellation.
GitOrigin-RevId: 83b47657c8c4546dfe98eec8b272833e96a46b7e
## What changed
- Add token-budget settings to model catalog messages and apply them when the
feature is enabled without explicit token-budget configuration.
- Keep explicit user settings authoritative, reject invalid catalog defaults,
and preserve resolved defaults in exported config locks.
- Manage context-window guidance through world state so it updates once when
the active model changes while retaining prior conversation history.
## Testing
- Cover catalog defaults, explicit overrides, disabled features, invalid
values, config-lock replay, and model switching.
GitOrigin-RevId: 54544fefaa14b09f5ef5bad9967a13c52b87b0fe
## Why
Cached MCP definitions can be supplied to inference without waiting for the
server to finish initializing.
## What changed
- Publish cached tools while startup is still in progress, clearing their
potentially stale read-only hint.
- Wait for the selected server to start before executing a tool call, then
prepare the call against the refreshed live binding.
- Keep cached tools visible in a binding even when no live client is available,
while rejecting attempts to prepare those calls.
## Testing
- Cover cached-tool visibility before startup and replacement with live tool
metadata afterward.
- Verify cached definitions reach inference before MCP initialization and that
calls unavailable in the live catalog return the expected model-visible
error.
GitOrigin-RevId: 3aae8f474c344ccdc5e08fe321bbad21d85bffd1
## What changed
- Add model and personality sections to the persisted world-state snapshot.
- Generate model-switch and personality instructions through world-state diffs, including when prior state must be inferred during replay.
- Keep those instruction fragments in standalone developer messages instead of merging them with adjacent context updates.
## Testing
- Cover initial, unchanged, and changed model and personality states.
- Verify that model changes are recorded in rollout world-state items.
GitOrigin-RevId: 497e29cf38cac08e992e546df900f6f8b01120f9
## What changed
- Add an optional `started_at_ms` field to `ItemCompletedEvent`, retaining
compatibility with older persisted events that lack it.
- Track the first start timestamp for each in-flight item and attach it when
emitting and persisting the completion event. If no start was recorded, use
the completion timestamp as a fallback.
- Emit a complete start/completion lifecycle for subagent activity items.
## Testing
- Cover concurrent item timing, repeated starts, turn-boundary cleanup, the
missing-start fallback, subagent activity, and persisted web-search events.
GitOrigin-RevId: e7cec9c4f1ef6ba67f287e81fb4d7d856fcf87a7
## What changed
- Add `code_mode_tool_names` to Responses Lite turn metadata, mapping each normalized code-mode identifier to its structured `ToolName`.
- Reserve the metadata key against client overrides and omit it from metadata exposed to external MCP servers.
- Keep non-Lite requests and the legacy top-level client metadata unchanged.
## Testing
- Cover HTTP and WebSocket Responses Lite requests, including switching from a non-Lite model.
- Verify reserved-key handling and external MCP metadata filtering.
GitOrigin-RevId: b678afba13d57a91e26f5895aa37238fbb4cb276
## What changed
- Scope pending network approvals to a turn and execution while still coalescing duplicate requests within one execution.
- Fail abandoned approval owners closed, cancel denied executions, resolve any waiting requests, and cancel in-flight Guardian reviews when their owner is dropped.
- Serialize session policy updates with approval caches so concurrent allow and deny decisions cannot leave enforcement and cached decisions inconsistent.
- Give user approval requests and permission hooks unique per-execution identifiers.
## Testing
- Cover approval deduplication boundaries, abandoned-owner cleanup, cancellation outcomes, replacement requests, and Guardian cancellation events.
GitOrigin-RevId: 11e184dd1c70294a99581b6ff0d4b6607d9ea1d9
## What changed
- Allow `features.code_mode_host` to use a configuration table with
`disable_in_process_fallback`. When enabled, failure to start the standalone
host is returned as tool output instead of falling back to embedded V8.
- Preserve the existing fallback behavior by default and continue accepting the
boolean feature toggle.
- Limit displayed host paths in spawn errors to 512 bytes while retaining the
executable-bearing suffix and valid UTF-8 boundaries.
## Testing
- Cover boolean and table-based feature configuration, fallback-disabled host
failures, and bounded ASCII and UTF-8 error paths.
GitOrigin-RevId: ab3d014e79054c2f8beef9a658915f01cca197b2
## What changed
- Add `remote_plugin_id` to skill invocation facts and analytics event parameters.
- Propagate the ID for both explicit and implicit plugin skill invocations.
## Testing
- Cover explicit and implicit remote plugin skill invocations with analytics integration tests.
GitOrigin-RevId: 3e1d25b5ff88dcff9c2b6c9fe44bca97e8778221
## Why
MCP authentication checks need to use the same HTTP routing as the MCP
transport so servers reached through configured proxies can be discovered
reliably.
## What changed
- Resolve OAuth discovery and authentication status through each server's
runtime HTTP client for both local and managed environments.
- Keep local discovery capped at five seconds while allowing explicit login
requests to retain their requested timeout.
- Resolve refreshed MCP configuration and its runtime context from the same
snapshot.
## Testing
- Cover OAuth discovery through an environment proxy and macOS system proxy
resolution.
- Cover proxied MCP startup and runtime refresh with updated authorization
headers.
- Verify capped and preserved OAuth discovery timeout policies.
GitOrigin-RevId: 461fb1d4786e547df8b1e6b2215a8ac40438a3aa
## Why
Hooks can only consume a transcript path when the thread has a local rollout.
## What changed
- Resolve the local rollout path before materializing the transcript.
- Return no transcript path for non-local thread stores without persisting them.
- Continue materializing lazy local rollouts before passing their path to hooks.
## Testing
Added session and hook tests covering both non-local thread stores and lazy local rollouts.
GitOrigin-RevId: c742984d146f7a3e1048b848198198fc7a64f4de
## Why
`thread/fork` rejected threads using paginated history, so they could not use the same fork workflow as legacy threads.
## What changed
- Create paginated forks by referencing a frozen source-history prefix while persisting only child-owned records in the new rollout.
- Support latest, `lastTurnId`, and `beforeTurnId` boundaries, including inherited lineage, model-context reconstruction, interruption markers, and approval-reviewer inheritance.
- Make paginated reads and occurrence search traverse referenced history while excluding source records added after the fork.
- Coordinate fork preparation with archive and delete operations, and materialize compressed rollouts before they become fork references.
## Testing
Added app-server and thread-store coverage for boundary selection, active turns, inherited reads and search, compressed lineage, and concurrent source lifecycle operations.
GitOrigin-RevId: 66052d69517d7fb97a3b7817ab77a39c5ad995fd
## Why
The Apps MCP background retry could complete before the test inspected the
initial sampling request, making the recovery timing nondeterministic.
## What changed
- Add a test-server gate that can hold and explicitly release the next
successful Apps MCP initialization.
- Use a dedicated MCP mock server so the held initialization does not block
model responses or app discovery.
- Assert that recovery uses exactly two initialization attempts and that Apps
guidance and the deferred namespace appear only after the gate is released.
GitOrigin-RevId: deb21d4b41f353c3f84428616769af9faa1a0487
## Why
The follow-up request assertion can run before the lazily reloaded worker has
finished handling its task.
## What changed
Poll the reloaded worker's status with a two-second deadline, then inspect the
recorded request after the worker reports completion.
GitOrigin-RevId: 4d53cdc5e5ed53009b4445385f8e835e19be7b8b
## Why
Extension warnings need a stable thread target even when they are emitted outside an active turn.
## What changed
- Add `ExtensionWarning` and a dedicated `ExtensionEventSink::emit_warning` path with an explicit thread ID and optional turn ID.
- Deliver extension warnings as thread-scoped app-server `warning` notifications, preserving listener ordering and waiting briefly for a subscriber when no listener is active.
- Move skills warnings to the new path, limiting provider catalog warnings to four messages of 256 bytes each.
## Testing
- Cover warning routing, ordering, UTF-8-safe truncation, subscriber fallback, and invalid thread IDs.
- Verify skills warning bounds and app-server delivery of executor catalog budget warnings.
GitOrigin-RevId: 4dcb1ba7f17c0edb1a9d548f9568e0c734bffc15
## Why
Runtime updates reuse unchanged MCP connections, so an explicit
`RefreshMcpServers` operation could leave existing server connections intact.
## What changed
- Mark explicit MCP refreshes to rebuild connections for every configured
server on the next runtime replacement.
- Preserve the reconnect request if that replacement is cancelled before it
finishes.
- Continue reusing connections for ordinary runtime updates.
## Testing
Update the transient Apps startup recovery test to wait for both turn
completion and the MCP server's ready event before checking the recovered tool.
GitOrigin-RevId: cb9fd978b3c07543058a2393a154fb70911531de
## Why
Changes to MCP inputs can require rebuilding the runtime before the next model
step. Start that work eagerly so the step is less likely to wait for it.
## What changed
- Add a per-session worker that prewarms dirty MCP state after configuration,
authentication, or explicit refresh changes.
- Coalesce queued refreshes and always rebuild from the latest session state,
while keeping exact model-step refreshes as the correctness path.
- Stop and join the worker during session shutdown.
## Testing
- Verify rapid refreshes skip superseded configuration and publish the latest
state.
- Verify MCP-relevant policy changes mark the runtime for refresh.
GitOrigin-RevId: 045ed406caff97dcbb483bc183fd16eae0c7d7ad
## What changed
- Add `WaitForEnvironmentToolConfig` as thread extension data for overriding the
model-visible tool and `environment_id` descriptions.
- Preserve the default descriptions when no override is provided or when the
configured descriptions exceed the input or serialized tool-spec limits.
- Keep `wait_for_environment` availability gated by the deferred executor
feature independently of whether a host override is present.
## Testing
- Cover default, custom, oversized, and feature-disabled tool configurations.
- Verify the custom descriptions in the deferred-environment integration flow.
GitOrigin-RevId: 6b49a73a434becd99ea5df911be53f3706a17c0a
## Why
Deferred tool world state already advertises the available tool sources, so
repeating them in the `tool_search` description adds redundant context.
## What changed
- Omit the source listing from `tool_search` when
`DeferredToolWorldState` is enabled while preserving the tool discovery
instructions.
- Include the source-listing mode in the tool search handler cache key so the
description is rebuilt when the feature state changes.
## Testing
Added coverage for source omission, cache invalidation when the feature is
toggled, and the resulting request payload.
GitOrigin-RevId: f7dc0c4f3351a7c7daadec936b26a080202730bc
## What changed
- Add the disabled-by-default `deferred_tool_world_state` feature, which exposes deferred tool namespaces and their descriptions to the model in a `<tools>` world-state section.
- Emit added and removed namespace updates as tool availability changes, bound the rendered context size, and persist nonempty state across thread resumes.
- Omit empty tool state while retaining deferred tool discovery through `tool_search`.
## Testing
- Cover initial, unchanged, removed, recovered, empty, and resumed namespace state, along with description truncation and rendered-size limits.
GitOrigin-RevId: 867e599666dc3569eb0789ba78aaa40254253a6f
## Why
After a remote plugin install refreshes the Apps tool catalog, a later MCP
runtime publication must not restore the catalog from the previous connection.
## What changed
- Rebuild the MCP runtime with fresh connections when hard-refreshing Apps
tools, using the latest desired runtime configuration.
- Refresh the Apps catalog on the newly published connection so subsequent
runtime updates retain it.
## Testing
Extend the remote plugin install test to verify that both newly available and
missing Apps tools remain consistent after an unrelated runtime configuration
refresh.
GitOrigin-RevId: 5b675d53d56379ab67fab09512fc2ad0ffcb8535
## What changed
- Resolve shell and unified-exec commands against the trusted plugin roots loaded for each turn.
- Add optional `pluginId` and safe plugin-relative `scriptPath` fields to command execution items and legacy execution events, and propagate them through app-server notifications.
- Include the attribution in command execution analytics while rejecting absolute, unsafe, and unattributed script paths.
## Testing
- Cover attribution for cached curated and remote plugin scripts from command execution through core and app-server events.
- Verify analytics serialization and unsafe-path filtering.
GitOrigin-RevId: 02fac3a233284ccfc6642fa502a95f1881dba83d
## Why
Skill catalog rendering can shorten descriptions or omit enabled skills to fit
the model context budget. Surface these reductions so users know when the
model-visible catalog has lost detail.
## What changed
- Emit a warning with the omitted skill count whenever entries do not fit.
- Warn when description shortening averages more than 100 characters per skill.
- Deduplicate executor catalog warnings across repeated world-state builds in a
turn.
## Testing
- Cover the description-shortening threshold and omission warning text.
- Verify warnings through extension and production-turn catalogs, including
per-turn deduplication.
GitOrigin-RevId: bd7fc3482e5dfd8c79072f772a2f54aa502478d9
## Why
The TUI must inspect the default execution environment before loading its final
configuration. Initializing the environment manager at that point can give
startup services the bootstrap HTTP policy instead of the effective policy after
managed requirements are applied.
## What changed
- Split environment discovery from manager construction so callers can inspect
the default environment without starting remote connections.
- Build the environment manager after final configuration loading and pass its
resolved `HttpClientFactory` through all construction paths.
- Add shared test support for managers that use the legacy default HTTP policy.
## Testing
- Cover connection-free environment discovery and explicit HTTP policy
propagation.
- Verify TUI startup services use the final managed `respect_system_proxy` value.
GitOrigin-RevId: 928fa31e6b4bcfbe1a121cade2f351427fdfa0f4
## Why
Codex and SQLite data can use separate home directories, but state consumers
could reconstruct database paths from the Codex home instead of consistently
using the resolved SQLite configuration.
## What changed
- Pass `SqliteConfig` through the core, rollout, state runtime, and thread store
instead of passing a directory and rebuilding the configuration downstream.
- Use that shared configuration for state, logs, memories, goals, and paginated
thread-history database access, including integrity checks and cleanup.
- Reject state database handles whose SQLite configuration does not match the
requesting store.
## Testing
Add coverage with separate Codex and SQLite homes that verifies startup
backfill, thread listing, and paginated history all use the configured SQLite
directory.
GitOrigin-RevId: 1de1cdd1d6ff1d70bbb6c360c8352e6543fb8ebf
## What changed
- Accept a table form of `features.non_prefixed_mcp_tool_names` with an
optional `server_names` list while preserving the existing boolean form.
- Omit the legacy `mcp__` namespace prefix only for tools from selected MCP
servers. When no server list is provided, the enabled feature continues to
omit the prefix for every server.
- Cover configuration resolution, tool normalization, and an MCP stdio
round trip with selected servers.
GitOrigin-RevId: bdfb7ac54226de5051f06610e2c6b78b23912ef0
## Why
Refreshing MCP runtime state should not restart an unchanged, ready server or
relist its tools.
## What changed
- Reconcile refreshed MCP configuration against the published connection set
and reuse connections whose transport, environment, authentication, OAuth
credentials, and client capabilities are unchanged.
- Keep tool filters, timeouts, metadata, and plugin provenance in the published
server view so those settings can change without reconnecting.
- Update elicitation authority in place for reused connections, and reconnect
when connection-defining inputs or live OAuth credentials change.
## Testing
Added coverage for unchanged-server reuse, view-only and elicitation-policy
updates, connection identity changes, OAuth credential changes, and avoiding
redundant tool listing.
GitOrigin-RevId: f04f5db5fbdde127b6a14f6aa9673112c0b557e7
## What changed
- Make `McpRuntime` own the published MCP configuration, connections, elicitation routing, and selected capability roots for a thread.
- Capture immutable MCP bindings for model steps and tool calls so in-flight work keeps a consistent connection set and approval authority while refreshed state is published atomically.
- Mark MCP state dirty when relevant configuration, plugins, environments, authentication, or elicitation capabilities change, then rebuild it before the next sampling request or out-of-band MCP operation.
- Separate config reloads from server invalidation: `ReloadMcpConfig` applies resolved MCP inputs, while `RefreshMcpServers` requests reinitialization from the thread's latest state.
## Testing
- Cover refreshed state visibility for existing turns, stable step bindings, current approval authority, cancelled refresh retries, resource-client reconciliation, and Apps recovery between sampling requests.
GitOrigin-RevId: 59eabb1aa8dc083426bd18ef4d3630508f376401
## What changed
- Add a default-on `features.multi_agent_v2.wait_agent_enabled` setting.
- Omit `collaboration.wait_agent` from the tool plan when the setting is disabled, independently of `features.current_time_reminder.sleep_tool`.
## Testing
- Cover configuration parsing and tool exposure with both clock sleep states.
GitOrigin-RevId: c2f34c5edd5bc191d6a5ac41d7bbb80708da1202
## Why
An idle thread with an outstanding durable sleep must resume when agent work
arrives, even when that message would normally remain queued without triggering a
turn.
## What changed
- Treat any pending mailbox message as wake-up work while a durable sleep is
attached to the thread.
- Keep requiring `trigger_turn` for idle threads that are not durably asleep.
- Cover waking a sleeping root thread from queue-only agent mail and persisting
the message in thread history.
GitOrigin-RevId: e361ac1b104436d4d63aebfe5e2422691a1cc139
## Why
Parent context-window and auto-compaction overrides may describe a different
model than the one selected for Guardian review.
## What changed
- Clear `model_context_window` and `model_auto_compact_token_limit` when the
effective Guardian model differs from the parent model, allowing the review
model's own limits to apply.
- Preserve those overrides when Guardian uses the same effective model.
## Testing
Add unit coverage for both model-selection paths and verify that a Guardian
rollout records the selected review model's context window.
GitOrigin-RevId: ebc399f4eba37c7f279fd0d258154c00d45e2d00
## What changed
- Add the `supports_standalone_web_search` model-provider setting, defaulting to `false`, and preserve it in remote thread configuration.
- Enable the standalone `web.run` tool for opted-in custom Responses providers when web search is enabled and the runtime provider supports it.
- Send standalone search requests through the custom provider's endpoint and authentication.
## Testing
- Cover opt-in, default-off, disabled-search, and unsupported-provider behavior.
- Verify custom-provider search request routing and authorization through the app server.
GitOrigin-RevId: 7c5f96b0ce924ad2b9715c45bfc635e89fc39cff
## Why
Multi-agent mode instructions are durable model context and need to survive
history changes without re-emitting unrelated setup hints.
## What changed
- Add a `multi_agent_mode` world-state section that diffs, retains, and restores
the effective mode instructions.
- Persist mode changes in world-state snapshots while keeping the legacy
`TurnContextItem.multi_agent_mode` field for reading older rollouts.
- Keep initial mode instructions after the root-agent usage hint so the active
mode takes precedence, and bound custom mode text before snapshotting it.
## Testing
- Add snapshot coverage for mode transitions, retained history, and custom-text
truncation.
- Verify live mode changes preserve instruction ordering, avoid duplicating the
usage hint, and record both modes in world state.
GitOrigin-RevId: 96b9964d6e5299b07a011c559b68e3d948a49226
## Why
Interrupting a turn while MCP tools were still starting could abort before the
submitted user input was recorded in conversation history.
## What changed
- Build and retain the MCP tool list and tool router as part of each step
snapshot, using the turn cancellation token during tool discovery.
- Record turn hooks and submitted input when cancellation occurs during startup
prewarming, pre-sampling compaction, or first-step capture.
- Reuse the captured router for sampling, compaction, and prompt debugging so
advertised and executable tools share the same request-scoped view.
## Testing
Add coverage that interrupts each affected MCP startup phase and verifies that
the user prompt remains in history before the turn-aborted marker.
GitOrigin-RevId: 6e96c6814357a55545d69b580e28f35933cfadf7
