sayan-oai 0da13c6c99 Track multi-agent mode in world state (#34845) ...

## 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

2026-07-22 23:57:24 +00:00

..

snapshots

Track permission instructions in world state (#33944)

2026-07-18 02:45:55 +00:00

abort_tasks.rs

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

additional_context.rs

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

agent_execution.rs

Namespace multi-agent v2 tools under collaboration (#29067)

2026-06-23 14:15:20 +02:00

agent_websocket.rs

Always assign response item IDs (#34645)

2026-07-22 01:23:44 +00:00

agents_md.rs

Consolidate thread startup around StartThreadOptions (#34814)

2026-07-22 19:31:54 +00:00

apply_patch_cli.rs

Render turn diffs for foreign environment paths (#34654)

2026-07-22 02:19:45 +00:00

approvals.rs

Skip missing paths in filesystem sandbox entries (#34598)

2026-07-21 19:17:18 +00:00

audio_truncation.rs

Consolidate thread startup around StartThreadOptions (#34814)

2026-07-22 19:31:54 +00:00

auto_review.rs

Increase the auto-review model override test timeout (#34622)

2026-07-21 22:02:49 +00:00

catalog_permission_messages.rs

Support model catalog permission messages (#33147)

2026-07-14 20:14:29 +00:00

cli_stream.rs

Update models.json (#31684)

2026-07-09 03:40:08 +00:00

client_websockets.rs

Always assign response item IDs (#34645)

2026-07-22 01:23:44 +00:00

client.rs

Consolidate thread startup around StartThreadOptions (#34814)

2026-07-22 19:31:54 +00:00

code_mode_elicitation.rs

code-mode: make all approvals trigger elicitation pause (#31650)

2026-07-08 15:27:04 -07:00

code_mode.rs

Consolidate thread startup around StartThreadOptions (#34814)

2026-07-22 19:31:54 +00:00

codex_delegate.rs

Remove obsolete ignored tests (#34558)

2026-07-21 14:57:39 +00:00

collaboration_instructions.rs

Track collaboration mode instructions in world state (#33876)

2026-07-17 17:22:39 +00:00

compact_remote_parity.rs

Always assign response item IDs (#34645)

2026-07-22 01:23:44 +00:00

compact_remote.rs

Support configurable realtime BEM channel prefixes (#34816)

2026-07-22 19:43:35 +00:00

compact_resume_fork.rs

Support openai/form extended form elicitations (#27500)

2026-06-18 11:54:49 -07:00

compact.rs

Always assign response item IDs (#34645)

2026-07-22 01:23:44 +00:00

current_time_reminder.rs

[codex] impl delivery_mode: current time reminders on response boundaries (#30033)

2026-06-25 19:28:50 +00:00

deprecation_notice.rs

Add indexed web search mode (#28489)

2026-06-19 05:35:57 -07:00

exec_policy.rs

Propagate approval rejection reasons (#34400)

2026-07-20 19:23:21 +00:00

exec.rs

Add network environment ID plumbing (#28766)

2026-06-18 14:09:38 +02:00

extension_sandbox.rs

Skip missing paths in filesystem sandbox entries (#34598)

2026-07-21 19:17:18 +00:00

external_auth.rs

[codex] Add externally provided Codex auth (#31274)

2026-07-07 17:43:19 -07:00

fork_thread.rs

Preserve thread settings for goal-first and forked threads (#34469)

2026-07-21 05:19:49 +00:00

git_enrichment.rs

Consolidate thread startup around StartThreadOptions (#34814)

2026-07-22 19:31:54 +00:00

guardian_review.rs

Support model catalog templates for Guardian policy prompts (#33177)

2026-07-14 22:01:11 +00:00

hooks_mcp.rs

Represent MCP authentication with an enum (#29924)

2026-06-24 19:51:51 -07:00

hooks.rs

Consolidate thread startup around StartThreadOptions (#34814)

2026-07-22 19:31:54 +00:00

image_rollout.rs

Always assign response item IDs (#34645)

2026-07-22 01:23:44 +00:00

items.rs

Always assign response item IDs (#34645)

2026-07-22 01:23:44 +00:00

json_result.rs

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

live_cli.rs

[codex] Use expect in integration tests (#28441)

2026-06-15 21:53:47 -07:00

mcp_auth_elicitation.rs

Add keyed shell environment policy filters (#34590)

2026-07-21 18:23:26 +00:00

mcp_auth_refresh.rs

Rename the MCP connection manager to McpConnectionSet (#34708)

2026-07-22 09:25:22 +00:00

mcp_refresh_cleanup.rs

Pin MCP runtimes to model steps (#30101)

2026-06-26 00:53:07 +01:00

mcp_tool_cache.rs

Consolidate thread startup around StartThreadOptions (#34814)

2026-07-22 19:31:54 +00:00

mcp_tool_exposure.rs

Remove step-scoped data from extension contributors (#34734)

2026-07-22 11:17:28 +00:00

mcp_turn_metadata.rs

Add keyed shell environment policy filters (#34590)

2026-07-21 18:23:26 +00:00

mod.rs

Skip Git enrichment for prewarm and Guardian turns (#34728)

2026-07-22 10:47:51 +00:00

model_overrides.rs

[5 of 7] Replace OverrideTurnContext with ThreadSettings (#22508)

2026-05-18 21:03:51 -07:00

model_runtime_selectors.rs

Unify multi-agent settings under agents (#33550)

2026-07-16 09:00:51 +00:00

model_switching.rs

Always assign response item IDs (#34645)

2026-07-22 01:23:44 +00:00

model_visible_layout.rs

Refresh step world state for all sessions (#33665)

2026-07-16 18:45:42 +00:00

models_cache_ttl.rs

Respect model support for reasoning summaries (#32290)

2026-07-10 23:39:21 +00:00

models_etag_responses.rs

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

multi_agent_mode.rs

Track multi-agent mode in world state (#34845)

2026-07-22 23:57:24 +00:00

multi_agent_resume.rs

Restore agent roles when reloading v2 sub-agents (#33657)

2026-07-16 18:20:14 +00:00

multi_exec_server_sandbox.rs

Test workspace write isolation across exec servers (#33861)

2026-07-17 16:07:24 +00:00

network_approval.rs

Propagate approval rejection reasons (#34400)

2026-07-20 19:23:21 +00:00

openai_file_mcp.rs

[codex-apps] Filter optional file fields by tool schema (#31686)

2026-07-09 14:32:23 -07:00

otel.rs

Propagate approval rejection reasons (#34400)

2026-07-20 19:23:21 +00:00

override_updates.rs

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

pending_input.rs

Respect final-answer boundaries for queued agent mail (#33367)

2026-07-15 15:48:12 +00:00

permissions_messages.rs

Support catalog messages for non-request approval policies (#34434)

2026-07-21 00:22:31 +00:00

personality.rs

Support model catalog permission messages (#33147)

2026-07-14 20:14:29 +00:00

plugins.rs

Make Apps guidance react to MCP availability (#30226)

2026-07-06 14:29:19 -07:00

prompt_cache_key.rs

Use session IDs for prompt cache keys (#33035)

2026-07-14 10:37:23 +00:00

prompt_caching.rs

Always assign response item IDs (#34645)

2026-07-22 01:23:44 +00:00

prompt_debug_tests.rs

Enable git attribution across Codex entry points (#34819)

2026-07-22 20:23:35 +00:00

quota_exceeded.rs

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

realtime_conversation.rs

Support configurable realtime BEM channel prefixes (#34816)

2026-07-22 19:43:35 +00:00

realtime_initial_items.rs

Support configurable realtime BEM channel prefixes (#34816)

2026-07-22 19:43:35 +00:00

remote_env.rs

Skip missing paths in filesystem sandbox entries (#34598)

2026-07-21 19:17:18 +00:00

remote_models.rs

Respect model support for reasoning summaries (#32290)

2026-07-10 23:39:21 +00:00

request_compression.rs

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

request_permissions_tool.rs

[codex] Use expect in integration tests (#28441)

2026-06-15 21:53:47 -07:00

request_permissions.rs

Propagate approval rejection reasons (#34400)

2026-07-20 19:23:21 +00:00

request_plugin_install.rs

[plugins] Track plugin install requests by ID (#29684)

2026-06-24 21:29:11 +00:00

request_user_input.rs

[codex] Use expect in integration tests (#28441)

2026-06-15 21:53:47 -07:00

responses_api_proxy_headers.rs

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

responses_lite.rs

Use the image generation extension by default (#31596)

2026-07-09 12:25:19 +09:00

responses_system_proxy.rs

Migrate login HTTP construction to HttpClient (#34643)

2026-07-22 00:50:28 +00:00

resume_warning.rs

Include terminal errors in turn completion events (#32280)

2026-07-10 22:04:03 +00:00

resume.rs

Update models.json (#21818)

2026-07-08 16:24:12 -07:00

review.rs

feat(core): emit canonical review mode items (#31473)

2026-07-08 09:59:50 -07:00

rmcp_client.rs

Preserve user input when MCP startup is interrupted (#34839)

2026-07-22 22:50:13 +00:00

rollout_budget.rs

Stabilize shared rollout budget test (#31587)

2026-07-08 16:10:28 +01:00

rollout_list_find.rs

Support thread-level originator overrides (#29477)

2026-06-23 17:23:38 -07:00

safety_buffering.rs

[codex] Read retry model from buffering events (#31262)

2026-07-06 17:04:26 +00:00

safety_check_downgrade.rs

Update models.json (#21818)

2026-07-08 16:24:12 -07:00

search_tool.rs

Consolidate thread startup around StartThreadOptions (#34814)

2026-07-22 19:31:54 +00:00

shell_command.rs

test: branch on target OS instead of runner flavor (#29712)

2026-06-23 14:27:13 -07:00

shell_serialization.rs

test: branch on target OS instead of runner flavor (#29712)

2026-06-23 14:27:13 -07:00

shell_snapshot.rs

Preserve zsh tied PATH exports in shell snapshots (#34293)

2026-07-20 08:29:12 +00:00

skill_approval.rs

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

skills_extension.rs

Drop skill descriptions before omitting catalog entries (#34738)

2026-07-22 11:53:53 +00:00

skills.rs

core tests: rename automatic environment builder (#29728)

2026-06-23 21:45:06 +00:00

spawn_agent_description.rs

Expose spawn agent types only when roles are configured (#33572)

2026-07-16 10:28:36 +00:00

sqlite_state.rs

Consolidate thread startup around StartThreadOptions (#34814)

2026-07-22 19:31:54 +00:00

stream_error_allows_next_turn.rs

Include terminal errors in turn completion events (#32280)

2026-07-10 22:04:03 +00:00

stream_no_completed.rs

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

subagent_notifications.rs

Consolidate thread startup around StartThreadOptions (#34814)

2026-07-22 19:31:54 +00:00

token_budget.rs

Add a fallback phase before automatic context rollover (#33255)

2026-07-15 05:45:43 +00:00

tool_harness.rs

[codex] Use expect in integration tests (#28441)

2026-06-15 21:53:47 -07:00

tool_parallelism.rs

[codex] Use expect in integration tests (#28441)

2026-06-15 21:53:47 -07:00

tools.rs

Always assign response item IDs (#34645)

2026-07-22 01:23:44 +00:00

truncation.rs

Represent MCP authentication with an enum (#29924)

2026-06-24 19:51:51 -07:00

turn_state.rs

[codex] Use expect in integration tests (#28441)

2026-06-15 21:53:47 -07:00

unified_exec_process_events.rs

Route Windows sandbox proxy traffic by restricting SID (#34613)

2026-07-21 21:06:04 +00:00

unified_exec_zsh_fork_approvals.rs

Skip missing paths in filesystem sandbox entries (#34598)

2026-07-21 19:17:18 +00:00

unified_exec.rs

Order unified exec lifecycle events reliably (#34713)

2026-07-22 09:29:09 +00:00

unstable_features_warning.rs

Add keyed shell environment policy filters (#34590)

2026-07-21 18:23:26 +00:00

user_notification.rs

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

user_shell_cmd.rs

[codex] Warn clearly when code mode output is truncated (#28467)

2026-06-16 10:37:06 -07:00

view_image.rs

Skip missing paths in filesystem sandbox entries (#34598)

2026-07-21 19:17:18 +00:00

web_search.rs

Update models.json (#21818)

2026-07-08 16:24:12 -07:00

websocket_fallback.rs

Pair thread environment settings (#26687)

2026-06-08 13:55:15 -07:00

window_headers.rs

[codex] Use expect in integration tests (#28441)

2026-06-15 21:53:47 -07:00

windows_sandbox.rs

Skip missing paths in filesystem sandbox entries (#34598)

2026-07-21 19:17:18 +00:00

workspace_roots.rs

Support Windows sandboxing in the exec server (#34423)

2026-07-20 22:35:14 +00:00