Sean Huang 7c568b331b Extract the head-tail buffer into a utility crate (#56535) ...

## What changed

Move `HeadTailBuffer` and `format_output_omission_marker` into the new
`codex-utils-head-tail-buffer` crate, exposing the buffer API with an explicit
const-generic byte budget. Update core callers to use the crate and add Cargo
and Bazel definitions.

Move the existing buffer tests alongside the implementation, preserving the
prefix/suffix retention and omission-marker behavior.

GitOrigin-RevId: ff488d0a0a62c39c0e11c11ebb539166cc4c6e74

2026-10-23 17:35:25 +00:00

..

agent

Require managed configuration from the configured server (#56055)

2026-10-22 02:15:00 +00:00

apps

Support typed content in contextual prompt fragments (#54776)

2026-10-17 04:02:21 +00:00

config

Make the Guardian review timeout configurable (#56371)

2026-10-23 06:34:00 +00:00

context

Move Guardian tool description preparation into context composition (#56493)

2026-10-23 14:58:20 +00:00

context_manager

Share additional tool declarations across response item clones (#54945)

2026-10-17 23:17:51 +00:00

exec_policy

Avoid false URL-launch detections in literal PowerShell commands (#54076)

2026-10-14 19:47:50 +00:00

guardian

Defer sync Guardian tool-output truncation to transcript preparation (#56533)

2026-10-23 17:28:33 +00:00

hook_runtime

Enable executor cleanup hooks with V2 capability discovery (#56044)

2026-10-22 01:42:11 +00:00

mcp_tool_call

Preserve specific MCP failure codes in metrics and spans (#54094)

2026-10-14 20:53:59 +00:00

plugins

Support typed content in contextual prompt fragments (#54776)

2026-10-17 04:02:21 +00:00

realtime_conversation

Expose and persist turn lineage across the app server (#51415)

2026-10-06 16:56:39 +00:00

realtime_history

Record realtime conversation history in Core (#41924)

2026-08-31 22:38:23 +00:00

sandboxing

Run sandbox integrity checks before commands and filesystem operations (#51843)

2026-10-07 21:52:43 +00:00

session

Add turn, tool, and skill attribution to traces (#56524)

2026-10-23 16:55:32 +00:00

state

Defer agent mail after empty final answers (#56133)

2026-10-22 10:03:05 +00:00

tasks

Add turn, tool, and skill attribution to traces (#56524)

2026-10-23 16:55:32 +00:00

thread_manager

Distinguish retryable thread-store errors from unknown write outcomes (#54664)

2026-10-16 17:31:47 +00:00

tools

Extract the head-tail buffer into a utility crate (#56535)

2026-10-23 17:35:25 +00:00

unified_exec

Extract the head-tail buffer into a utility crate (#56535)

2026-10-23 17:35:25 +00:00

utils

…

agent_communication.rs

Add lifecycle hooks for inter-agent messages (#55657)

2026-10-20 19:39:43 +00:00

agent_message_board.rs

Add storage namespaces for local message boards (#55971)

2026-10-21 19:36:20 +00:00

agents_md_manager.rs

Roll back stale Guardian reviews before reusing reviewer history (#51683)

2026-10-07 13:05:06 +00:00

agents_md_tests.rs

Add hook configuration to environment attachments (#56302)

2026-10-23 00:02:29 +00:00

agents_md.rs

Reject paths in project documentation fallback filenames (#45865)

2026-09-16 04:59:23 +00:00

apply_patch_tests.rs

Fix macOS system-alias matching in patch permission checks (#47879)

2026-09-24 16:36:57 +00:00

apply_patch.rs

Fix macOS system-alias matching in patch permission checks (#47879)

2026-09-24 16:36:57 +00:00

attestation.rs

…

client_common_tests.rs

Add opt-in output token replay for OpenAI requests (#52742)

2026-10-10 01:25:00 +00:00

client_common.rs

Interrupt and drain canceled classifier responses before socket reuse (#53698)

2026-10-13 15:24:00 +00:00

client_tests.rs

Track accepted conversation history in rollout traces (#56312)

2026-10-23 00:45:20 +00:00

client_tool_metadata_tests.rs

Send base instructions as Responses input messages (#51156)

2026-10-05 18:52:51 +00:00

client_tool_metadata.rs

Bound tool-call observations to the outgoing Responses message budget (#47957)

2026-09-24 22:54:29 +00:00

client.rs

Track accepted conversation history in rollout traces (#56312)

2026-10-23 00:45:20 +00:00

code_mode_host_tests.rs

Verify reset notification during code-mode host recovery (#52952)

2026-10-10 18:26:18 +00:00

code_mode_host.rs

Add opt-in gRPC over stdio for the code-mode host (#52723)

2026-10-09 23:26:34 +00:00

codex_delegate_tests.rs

Add lifecycle hooks for inter-agent messages (#55657)

2026-10-20 19:39:43 +00:00

codex_delegate.rs

Add experimental attached thread forks (#56351)

2026-10-23 04:52:47 +00:00

codex_thread.rs

Add local diagnostic ZIP exports to the app server (#55940)

2026-10-21 16:43:30 +00:00

command_canonicalization_tests.rs

…

command_canonicalization.rs

…

compact_model_fallback.rs

Treat incomplete responses as terminal errors (#53451)

2026-10-12 18:53:49 +00:00

compact_remote_history_tests.rs

Remove the unused legacy remote compaction implementation (#44273)

2026-09-09 18:40:53 +00:00

compact_remote_history.rs

Prepare compaction helpers for background requests (#53606)

2026-10-13 08:13:34 +00:00

compact_remote_v2_attempt.rs

Reuse background results for remote V2 compaction (#53620)

2026-10-13 09:18:45 +00:00

compact_remote_v2_image_budget_tests.rs

Add opt-in output token replay for OpenAI requests (#52742)

2026-10-10 01:25:00 +00:00

compact_remote_v2_images.rs

Add opt-in output token replay for OpenAI requests (#52742)

2026-10-10 01:25:00 +00:00

compact_remote_v2_installation_tests.rs

Wire background compaction into the turn lifecycle (#53800)

2026-10-13 23:51:47 +00:00

compact_remote_v2_installation.rs

Wire background compaction into the turn lifecycle (#53800)

2026-10-13 23:51:47 +00:00

compact_remote_v2.rs

Wire background compaction into the turn lifecycle (#53800)

2026-10-13 23:51:47 +00:00

compact_retained_tool_outputs.rs

Retain client-marked tool outputs across compaction (#52937)

2026-10-10 17:30:25 +00:00

compact_tests.rs

Refresh model instructions in incremental-tool context windows (#53872)

2026-10-14 05:36:44 +00:00

compact_token_budget.rs

Install full context in compaction replacement history (#51117)

2026-10-05 16:10:27 +00:00

compact.rs

Avoid double-counting retained reasoning in token usage (#55991)

2026-10-21 21:23:01 +00:00

connectors_tests.rs

Honor app link settings for MCP tool approvals (#42056)

2026-09-01 13:43:27 +00:00

connectors.rs

Add negotiated network policy metadata support for MCP calls (#56278)

2026-10-22 22:33:07 +00:00

current_time.rs

…

cyber_access_program.rs

Forward per-turn Cyber access programs to Guardian (#52689)

2026-10-09 20:14:04 +00:00

elicitation_tests.rs

…

elicitation.rs

…

environment_connection_tests.rs

Defer environment disconnect notifications until recovery fails (#55401)

2026-10-19 22:55:42 +00:00

environment_selection_snapshot_tests.rs

Add configured thread environment inheritance for subagents (#55375)

2026-10-19 20:30:44 +00:00

environment_selection.rs

Add hook configuration to environment attachments (#56302)

2026-10-23 00:02:29 +00:00

event_mapping_tests.rs

Support typed content in contextual prompt fragments (#54776)

2026-10-17 04:02:21 +00:00

event_mapping.rs

Track content provenance through prompt assembly and compaction (#53831)

2026-10-14 02:01:49 +00:00

exec_env_tests.rs

Make apply_patch preserve line endings unconditionally (#51203)

2026-10-05 23:52:06 +00:00

exec_env.rs

Expose originating tool call metadata in command environments (#52119)

2026-10-08 13:45:19 +00:00

exec_policy_tests.rs

Avoid false URL-launch detections in literal PowerShell commands (#54076)

2026-10-14 19:47:50 +00:00

exec_policy_windows_tests.rs

Avoid false URL-launch detections in literal PowerShell commands (#54076)

2026-10-14 19:47:50 +00:00

exec_policy.rs

Upgrade the Rust toolchain to 1.99.1 (#55677)

2026-10-20 21:28:45 +00:00

exec_tests.rs

Wait for readiness in the SIGTERM cancellation test (#54099)

2026-10-14 21:11:58 +00:00

exec.rs

Run sandbox integrity checks before commands and filesystem operations (#51843)

2026-10-07 21:52:43 +00:00

feedback_config_tests.rs

Add configuration and feature diagnostics to report metadata (#46501)

2026-09-18 23:07:36 +00:00

feedback_config.rs

Add configuration and feature diagnostics to report metadata (#46501)

2026-09-18 23:07:36 +00:00

function_tool.rs

Complete dynamic tool lifecycles on cancellation (#51556)

2026-10-07 03:07:51 +00:00

git_info_tests.rs

Use descriptor-safe helpers for executable test fixtures (#50018)

2026-10-01 15:57:03 +00:00

guardian_review.rs

Add opt-in conversation history retrieval to Guardian reviews (#49036)

2026-09-28 17:29:52 +00:00

hook_environment_executor.rs

Run environment hooks on their owning executors (#56343)

2026-10-23 04:01:39 +00:00

hook_mcp_executor.rs

Start dormant MCP servers for hook calls (#55263)

2026-10-19 11:40:15 +00:00

hook_runtime.rs

Run environment hooks on their owning executors (#56343)

2026-10-23 04:01:39 +00:00

image_preparation_tests.rs

Track content provenance through prompt assembly and compaction (#53831)

2026-10-14 02:01:49 +00:00

image_preparation.rs

Store generated image items as attachment references (#54398)

2026-10-15 19:51:22 +00:00

installation_id.rs

…

lib.rs

Run environment hooks on their owning executors (#56343)

2026-10-23 04:01:39 +00:00

mcp_openai_file.rs

Bind permission grants to the originating turn (#49880)

2026-10-01 05:33:36 +00:00

mcp_skill_dependencies.rs

Add configurable default plugin activation policy (#52220)

2026-10-08 18:42:58 +00:00

mcp_tool_approval_templates.rs

Organize bundled Rust resources under asset directories (#41477)

2026-08-29 06:05:28 +00:00

mcp_tool_call_tests.rs

Run environment hooks on their owning executors (#56343)

2026-10-23 04:01:39 +00:00

mcp_tool_call.rs

Run environment hooks on their owning executors (#56343)

2026-10-23 04:01:39 +00:00

mcp_tool_exposure_test.rs

Share prepared MCP tool definitions across sessions (#55724)

2026-10-21 01:55:56 +00:00

mcp_tool_exposure.rs

Share prepared MCP tool definitions across sessions (#55724)

2026-10-21 01:55:56 +00:00

mcp.rs

Refresh cloud plugin and skill catalogs after mid-turn auth changes (#55957)

2026-10-21 18:37:30 +00:00

memory_usage.rs

Tag memory usage telemetry with the memory version (#45960)

2026-09-16 15:17:41 +00:00

mention_syntax.rs

…

model_request_tests.rs

Preserve WebSocket continuations when steering a turn (#48508)

2026-09-26 18:36:55 +00:00

model_request.rs

Add extension hooks for model requests and response streams (#47679)

2026-09-23 22:10:04 +00:00

network_policy_decision_tests.rs

…

network_policy_decision.rs

…

original_image_detail.rs

…

otel_init.rs

Honor custom OTLP metrics exporters when analytics is disabled (#52278)

2026-10-08 21:18:24 +00:00

prompt_debug.rs

Preserve tool declaration mode across resumed context windows (#51480)

2026-10-06 21:28:13 +00:00

realtime_context_tests.rs

Add opt-in output token replay for OpenAI requests (#52742)

2026-10-10 01:25:00 +00:00

realtime_context.rs

…

realtime_conversation_tests.rs

Forward client voice session IDs in realtime requests (#53784)

2026-10-13 22:21:31 +00:00

realtime_conversation.rs

Upgrade the Rust toolchain to 1.99.1 (#55677)

2026-10-20 21:28:45 +00:00

realtime_history_tests.rs

Record resolved model and reasoning effort in sub-agent activity (#51463)

2026-10-06 19:29:40 +00:00

realtime_history.rs

Record realtime conversation history in Core (#41924)

2026-08-31 22:38:23 +00:00

realtime_prompt.rs

…

responses_headers.rs

Route Guardian requests through /responses with identifying headers (#45736)

2026-09-15 17:09:11 +00:00

responses_metadata.rs

Forward Guardian reviewer events to parent raw-event subscribers (#56124)

2026-10-22 09:20:00 +00:00

responses_retry_tests.rs

Move content-filter guidance into the shared Responses retry handler (#49130)

2026-09-29 02:05:56 +00:00

responses_retry.rs

Add trace instrumentation for turn startup and response streaming (#56515)

2026-10-23 16:09:06 +00:00

rollout_budget.rs

Expose a backend-independent agent control contract (#46547)

2026-09-19 01:03:55 +00:00

rollout.rs

…

safety_tests.rs

Fix macOS system-alias matching in patch permission checks (#47879)

2026-09-24 16:36:57 +00:00

safety.rs

Fix macOS system-alias matching in patch permission checks (#47879)

2026-09-24 16:36:57 +00:00

sandbox_tags_tests.rs

Report configured sandbox policy consistently (#41933)

2026-08-31 23:29:20 +00:00

sandbox_tags.rs

Enable MXC selection through Windows sandbox configuration (#46271)

2026-09-17 18:20:28 +00:00

session_prefix_tests.rs

Notify parent agents when Guardian stops a subagent (#49312)

2026-09-29 16:53:11 +00:00

session_prefix.rs

Support typed content in contextual prompt fragments (#54776)

2026-10-17 04:02:21 +00:00

session_rollout_init_error_tests.rs

Distinguish retryable thread-store errors from unknown write outcomes (#54664)

2026-10-16 17:31:47 +00:00

session_rollout_init_error.rs

Distinguish retryable thread-store errors from unknown write outcomes (#54664)

2026-10-16 17:31:47 +00:00

shell_snapshot_sandbox_tests.rs

Preserve sandbox overrides across execution requests (#51786)

2026-10-07 17:59:22 +00:00

shell_snapshot_sandbox.rs

Run sandbox integrity checks before commands and filesystem operations (#51843)

2026-10-07 21:52:43 +00:00

shell_snapshot_tests.rs

Add hook configuration to environment attachments (#56302)

2026-10-23 00:02:29 +00:00

shell_snapshot.rs

Expose originating tool call metadata in command environments (#52119)

2026-10-08 13:45:19 +00:00

shell_tests.rs

Restore executor tool paths after login shell startup (#49467)

2026-09-30 03:22:55 +00:00

shell.rs

Restore executor tool paths after login shell startup (#49467)

2026-09-30 03:22:55 +00:00

skills.rs

Integrate discovery V2 with step-scoped skill catalogs (#55322)

2026-10-19 17:02:20 +00:00

spawn.rs

Remove the patched zsh shell execution backend (#52160)

2026-10-08 16:19:09 +00:00

state_db_bridge.rs

…

stream_events_utils_tests.rs

Defer agent mail after empty final answers (#56133)

2026-10-22 10:03:05 +00:00

stream_events_utils.rs

Defer agent mail after empty final answers (#56133)

2026-10-22 10:03:05 +00:00

test_support.rs

Default local threads to paginated history (#47900)

2026-09-24 18:07:37 +00:00

thread_manager_tests.rs

Add hook configuration to environment attachments (#56302)

2026-10-23 00:02:29 +00:00

thread_manager.rs

Add experimental attached thread forks (#56351)

2026-10-23 04:52:47 +00:00

thread_rollout_truncation_tests.rs

Add opt-in output token replay for OpenAI requests (#52742)

2026-10-10 01:25:00 +00:00

thread_rollout_truncation.rs

Remove partial-history subagent forks (#51329)

2026-10-06 10:39:16 +00:00

thread_spawn.rs

Add configured thread environment inheritance for subagents (#55375)

2026-10-19 20:30:44 +00:00

thread_startup_metadata.rs

Remove initial messages from session configuration events (#50360)

2026-10-02 16:55:41 +00:00

turn_diff_tracker_tests.rs

…

turn_diff_tracker.rs

…

turn_extension_data.rs

Capture host-supplied extension data for each turn (#49846)

2026-10-01 03:31:48 +00:00

turn_metadata_tests.rs

Forward turn metadata to image generation and edit requests (#54058)

2026-10-14 18:01:54 +00:00

turn_metadata.rs

Forward turn metadata to image generation and edit requests (#54058)

2026-10-14 18:01:54 +00:00

turn_timing_tests.rs

Add opt-in output token replay for OpenAI requests (#52742)

2026-10-10 01:25:00 +00:00

turn_timing.rs

Add turn, tool, and skill attribution to traces (#56524)

2026-10-23 16:55:32 +00:00

user_shell_command_tests.rs

…

user_shell_command.rs

Support typed content in contextual prompt fragments (#54776)

2026-10-17 04:02:21 +00:00

util_tests.rs

…

util.rs

Move retry backoff into codex-async-utils (#46330)

2026-09-18 00:25:37 +00:00

web_search.rs

…

windows_sandbox_read_grants_tests.rs

…

windows_sandbox_read_grants.rs

…

windows_sandbox_tests.rs

Always use private desktops for legacy Windows sandboxes (#46554)

2026-09-19 01:21:32 +00:00

windows_sandbox.rs

Log Windows sandbox availability and backend selection (#51974)

2026-10-08 06:31:56 +00:00

windows_system_config.rs

Add telemetry for the Windows system config namespace (#44284)

2026-09-09 19:31:12 +00:00

worktree_trust_tests.rs

Add portable project trust lookup APIs (#47620)

2026-09-23 18:40:12 +00:00