## Why
Regular chats start MCP servers eagerly even when cached tool definitions are available and the servers go unused. Allow those chats to use the cached catalog and defer eligible stdio servers until first use.
## What changed
- Add the disabled-by-default `mcp_lazy_stdio_startup` feature and expose it through experimental feature configuration.
- Defer cached stdio servers in regular chats when enabled, while keeping servers that require a live startup connection eager. Required servers with `startup_readiness = "catalog"` may defer; explicit reconnects remain eager.
- Announce the full eager startup batch before terminal statuses and exclude dormant servers from the initial startup summary. Update TUI tracking so deferred servers can report startup independently in later rounds.
## Testing
Add scenario coverage for a cached server staying dormant during unrelated work, starting on first use, and refreshing tool definitions and visibility. Cover required live startup, eager event ordering, experimental feature configuration, and TUI status handling.
GitOrigin-RevId: 74075fcd4f26c8c79b5901b6a8cb03fdb9e35a7f
## What changed
- Add the disabled-by-default `gateway_setup_wizard` feature to let users choose a saved custom gateway during eligible local sign-in onboarding.
- Save the selection as `model_provider`, restart the embedded app server with that provider, and complete required primary authentication and gateway OAuth before starting the first chat.
- Show gateway loading and configuration errors, browser sign-in links, and an OAuth retry action. Respect provider policy and launch overrides.
## Testing
Add coverage for onboarding eligibility, saved gateway selection and persistence, and gateway error and OAuth screens. Add a terminal integration test verifying that the selected gateway receives the first chat with authentication.
GitOrigin-RevId: 92bd2da3abd28d6c2274c91b2d7561bf359f0ca0
## Why
Incremental tool declarations were limited to Responses Lite. Regular OpenAI Responses requests sent the full current tool catalog on each request.
## What changed
- Add the disabled-by-default `incremental_tools_legacy` feature for regular OpenAI Responses, independently of the Responses Lite `incremental_tools` flag.
- Support tool declarations and updates in conversation history, including during compaction, while preserving existing history prefixes.
- Keep hosted `web_search` configuration in top-level `tools` rather than `additional_tools`, including in compaction requests.
## Testing
Extend request-history scenarios and snapshots to cover regular Responses catalog updates, model switches, compaction, and MCP tool removal and restoration. Assert that incremental requests preserve input prefixes and keep web search out of history declarations.
GitOrigin-RevId: fa347409e387aa973ce2e41df8505769b7db1ec2
## Why
Gateway sign-in needs an alternative for terminals that cannot open a browser.
## What changed
- Add optional `gateway_oauth.device_authorization_url` configuration and a `login_with_device_code` API that presents a verification URL and user code, polls for approval, and persists the resulting credentials.
- Use the configured proxy and network policy, validate verification URLs, and bound OAuth responses. Support cancellation and report denied or expired codes without exposing issuer error details.
## Testing
Add tests for successful authorization and credential persistence, unsafe verification URLs, network-policy denials, denied and expired codes, and cancellation during approval or credential storage.
GitOrigin-RevId: 96398578fb866d34929e85c04eadf468d8cd3255
## What changed
Allow `model_providers.<id>.gateway_oauth.credential_export` to supply a gateway access token instead of browser OAuth. Run the configured command on first use, cache its token in memory, and deliver it through the configured header or cookie. Export failures surface directly, and command-backed providers do not require an OAuth session.
Require mutually exclusive OAuth and exporter settings, same-origin model catalog access, and rejection of HTTP redirects for command-backed gateway credentials. Share the bounded, timeout-controlled command runner with AWS credential export.
## Testing
Add tests for inference and model listing without OAuth, token caching and recovery after invalid output, preservation of primary authentication, and rejection of mixed OAuth/exporter configuration.
GitOrigin-RevId: e3dbfd8823b1992045f1c1efd56ec98ee17e07a5
## Why
Starting a side chat waits for fork and setup requests. Keep the workspace responsive during those requests and let users return to an existing side chat through the sidebar chooser.
## What changed
- Add a clickable `Side chat` tab and `+` chooser, plus the configurable `focus_sidebar_tabs` action bound to `leader t` by default.
- Create workspace side chats in the background, showing loading and failure states with `Enter` to retry and `Esc` to go back. Preserve opening prompts and avoid taking focus when the user has moved away.
- Retain inherited permission profiles and defer startup notifications until the side chat is registered on its owning backend.
- Quiet the parent composer while the chooser has focus and prevent completion popups or repeated activation keys from consuming chooser input.
## Testing
Extend tests and snapshots for loading and failure states, returning to an existing chat, draft preservation, inherited permissions, focus transitions, and deferred MCP startup notifications.
GitOrigin-RevId: 244bcd3f170819e2260f21dc1041cf8899fe048c
## What changed
When `features.guardian_denial_reconsideration` is enabled, retry the first terminal denial once using the unchanged inference request. Buffer provisional output so only the selected response enters reviewer history, while allowing tool calls to proceed normally.
Preserve the original denial if the retry fails or times out, and continue to honor cancellation. Account for token usage from both attempts, including failed reviews.
Remove `auto_review.experimental_denial_reconsideration_prompt` and warn when it remains in configuration.
## Testing
Update the Guardian scenario and snapshot to verify identical retry inputs, retained tool evidence, and reuse of the selected assessment in a subsequent review, with asynchronous compaction enabled.
GitOrigin-RevId: cc4e303d40a02acc824c8b4b954852325e64ad52
## Why
A Code Mode script can start a command without returning its session handle. Make retained sessions visible to the model so it can find running commands and collect exited results with `write_stdin`.
## What changed
- Add the disabled-by-default `command_sessions_world_state` feature.
- Publish snapshots of up to 16 retained sessions with their IDs, running or exited status, and whether they are in use. Report omitted sessions and suppress unchanged updates.
- Preserve session visibility when `write_stdin` is unavailable and refresh snapshots after compaction. Clear stale session handles after restart or when the feature is disabled.
## Testing
Add an end-to-end scenario and model-visible history snapshot covering a dropped command handle, unchanged state, unavailable polling, compaction, exit and result collection, and stale-handle cleanup after restart.
GitOrigin-RevId: 45704d8c6403149997231aafb8496c12879aff23
## What changed
Add the disabled-by-default `async_compaction_root_only` feature flag. When enabled, it restricts background compaction to root sessions, excluding non-root agents. Expose the flag in the configuration schema.
## Testing
Add a parameterized test covering root session eligibility and eligibility for review subagents and guardian sessions with the flag enabled and disabled.
GitOrigin-RevId: b4cce3f24f7f418ae61a82a7aef310f849cfd532
## What changed
Add configurable pane actions with default leader shortcuts:
- `leader z` zooms or restores the focused conversation pane.
- `leader ,`, `leader .`, and `leader =` minimize, maximize, or equalize pane widths within layout limits.
- `leader shift-h` and `leader shift-l` move the divider while the side pane has focus.
- `leader r` enters resize mode, highlighting the divider and showing keyboard hints. Arrow keys or `h`/`l` move it one column; Shift+Left/Right move it ten columns. Enter or Esc saves the width to `tui.sidebar_width_percent`.
Discard resize previews when terminal focus is lost or the split layout becomes unavailable. Preserve exact column widths at the current terminal size for presets and completed keyboard resizing, avoiding percentage-rounding drift.
## Testing
Extend TUI tests and snapshots to cover zoom and restore, width presets, divider movement, resize previews and persistence, and interrupted resizing. Extend keymap tests to cover zoom binding conflicts and custom chords.
GitOrigin-RevId: 7dd823fd8c2a0c90368c66f254c4fdd7c863c8a8
## What changed
- Allow dragging the pane divider and save the preferred width in `tui.sidebar_width_percent`, defaulting to one third of the terminal. Defer reflow until release when retained images are present.
- Support scrolling and loading older history in the unfocused pane, opening links, copying selections, and clicking its composer to switch focus while preserving the clicked text position.
- Keep assistant replies, running command completion, and turn status current in the unfocused pane without duplicating answers or completion metadata when focus returns.
## Testing
Add regression coverage for divider previews and saved widths, image-aware resizing, composer clicks, unfocused history pagination and copying, and streaming replies and command completion across focus changes.
GitOrigin-RevId: a26accc0f8df3c17f53bc915db29a11c8de3c480
## What changed
- Add `features.guardianv2.sync_elastic_budgeting` and `sync_elastic_sections` to configure section minimums, per-entry token caps, and optional section maximums. Require and validate section limits when enabled.
- Use the selected budgeting policy consistently for history capture, resume, prompt preparation, and review input budgeting. Keep fixed budgeting as the default.
## Testing
Add configuration validation tests, capture-and-resume coverage for both budgeting modes, and a request-history snapshot verifying retained instructions and transcript section limits.
GitOrigin-RevId: c7b0bdfd3e0e008d75c4d8a204959bcc58eb1bf8
## What changed
- Add configurable `focus_pane_left` and `focus_pane_right` actions, defaulting to `leader left` / `leader h` and `leader right` / `leader l`.
- Move focus to the parent or open side conversation without reopening a hidden pane. Preserve the current interaction when no neighbor is available, and accept fresh typing after a no-op shortcut while suppressing reported key repeats.
- Expose the actions in the keymap picker and configuration schema, and prevent workspace-only pane bindings from claiming keys in classic mode.
## Testing
Add regression coverage for pane navigation, preserved transcript selection and search, fresh typing after a no-op, key capture, and binding conflicts and limits.
GitOrigin-RevId: 7f7629d15cffcd35d1353b36c5c9208dbb1034e8
## What changed
- Support `tui.notification_method = "osc777"` with a `Codex` title and tmux passthrough.
- Replace control characters in OSC notification bodies and escape semicolon delimiters for OSC 777. Limit Ghostty bodies to 255 bytes, preserving UTF-8 boundaries and adding an ellipsis when truncated.
- Remove the 30-grapheme command limit from approval notifications, strip shell wrappers, and describe terminal input and network access requests explicitly.
## Testing
Add coverage for notification method selection, OSC 777 output with and without tmux, control character handling, Ghostty truncation, and approval notification text.
GitOrigin-RevId: e15fa7fdb007c38a148217f6aa0bbcc5e7371f9e
## What changed
Add `guardian_include_additional_context` as a stable feature enabled by default, with a corresponding `GuardianIncludeAdditionalContext` enum variant. Document its purpose as including standalone additional-context tool outputs in Guardian review history, and expose the boolean flag in the configuration schema.
GitOrigin-RevId: 505132e5916bd7b3f1d6d80c2219051912ad8271
## What changed
- Add configurable `focus_main_composer` and `focus_sidebar_content` actions, with default `leader c` and `leader s` bindings in workspace mode.
- Let users return to the main composer while keeping the side pane open, or focus the side conversation and hide it when already focused.
- Clear transcript search, selection, and activity focus when returning to the main composer, including when hiding the side pane.
## Testing
Extend tests for focus switching, blocked thread switches, offline composer focus, key capture, and binding conflicts.
GitOrigin-RevId: da624ce7e00a63c4f13870e55c4bc95f09b32cc4
## What changed
Add `tui.keymap.global.hide_pane`, defaulting to `leader -` in workspace mode. Hiding a focused side conversation returns to its parent while retaining the conversation, drafts, and view state for reopening.
Expose the action in the workspace keymap picker, validate binding conflicts, and suppress held shortcut keys after switching focus.
## Testing
Add coverage for hiding and reopening at split-pane and narrow widths, preserving conversation state, shortcut availability, key capture, and repeat/release handling.
GitOrigin-RevId: 6897c34b208041e6f90ae0e18c781eebd62566bd
## Why
Setting granular `sandbox_approval` to `false` also blocked approval requests for dangerous commands such as `rm -f`, even when they requested no additional permissions. Reviewing a dangerous command should remain possible within the existing permission profile.
## What changed
Allow heuristic dangerous-command approval requests with `sandbox_approval = false` when execution stays within current permissions. Do not propose reusable execution-policy amendments for these approvals, since reusable allow rules can bypass the sandbox on later calls.
Keep escalation requests, explicit policy rules, and Windows execution without required sandbox protection subject to their existing approval restrictions. Clarify the meaning of `sandbox_approval` in the protocol and generated schemas.
## Testing
Add coverage for POSIX and Windows approval decisions, approval and denial of deletion commands, preservation of read-only restrictions, and separate dangerous-command approval after turn-scoped or session-scoped write grants.
GitOrigin-RevId: 90adc137c7b7d3f3ee68efb1f6bea531229e7834
## What changed
Add the disabled-by-default `guardian_denial_reconsideration` feature to reconsider a synchronous Guardian denial once before publishing the final decision. The follow-up uses the same review session, evidence, model settings, and original deadline, without compacting the retained context.
Only a valid second assessment replaces the denial. Invalid or failed follow-ups keep the original denial and discard the review session; cancellation and timeout retain their normal outcomes.
Allow a custom developer message through `auto_review.experimental_denial_reconsideration_prompt`, limited to 1,000 UTF-8 bytes. Omitted or blank values use the built-in prompt, which grants no new authorization and preserves the security policy.
## Testing
Add scenario coverage for feature gating, unchanged approvals, reconsidered approvals and denials, invalid assessments, failed follow-ups, custom prompts, and retained context. Extend cancellation coverage to reconsideration and config tests to prompt normalization and byte-limit validation.
GitOrigin-RevId: 61c45d5a948e3e5684c4b4048d6e90fd3f1f2476
## What changed
- Gate GIF output behind `features.image_generation_animation`, disabled by default.
- Accept `gif` options for generation and editing, with optional `frame_count` and `frame_duration_ms` controls. Use `gif: {}` for API defaults.
- Preserve animated output with `.gif` filenames and `image/gif` data URLs while providing a still preview to the model.
- Add guidance for simple animations and spritesheet-based GIF edits.
## Testing
Add integration coverage for GIF generation and editing, explicit frame controls and API defaults, saved animation bytes, and still-preview replay across follow-up turns.
GitOrigin-RevId: 08afa0316ae3675921652157836191a649f563cf
## What changed
- Add optional `ModelInfo.web_search_provider` metadata with `standalone` and `search_mcp` values.
- Add `tools.client_search_provider` and expose its value as `client_search_provider` in app-server configuration responses, with updated JSON schemas, TypeScript types, and Python bindings.
- Register the `hosted_search_policy` feature flag as under development and disabled by default.
GitOrigin-RevId: 263c3f81a61b50f8bb53ff338b9de8186db316e0
## What changed
- With multi-backend support enabled, show the current host before the first submission and use `leader b` to cycle through available connections. Expose the shortcut as `tui.keymap.global.change_host`.
- Preserve the conversation name and composer draft, including cursor position, attachments, pending pastes, and literal versus shell-command interpretation of `!`.
- Save explicit host choices in user-only `tui.default_hosts`, scoped to the local project and user identity. Use the saved host for new conversations, falling back to the first available connection when it is unavailable.
- Prepare the destination and check directory trust before replacing the current conversation. Block switching during voice calls and active turns, and remove replaced blank conversations from the session overview.
## Testing
Add coverage for shortcut visibility and remapping, draft and name preservation, project/user preference isolation, unavailable-host fallback, destination trust and startup failures, and voice-call guards.
GitOrigin-RevId: def7b088951336bec8fe3962954fba9b861f91c6
## What changed
- Add the disabled-by-default `tui_workspace` feature for the owned transcript view. At terminal widths of at least 100 columns, show the parent conversation beside its side conversation, with only the focused composer accepting input.
- Retain the inactive conversation's transcript, draft, and status, and restore reading and search state when switching focus.
- Keep drawing and input paused until history replay completes, while refreshing skills in the background.
## Testing
Add snapshots and regression tests for pane resizing and composer styling, retained streaming output, history search after replay, pending skills refreshes, and modal input protection.
GitOrigin-RevId: 68938f263353b0cd3a9e9562e06293bfc8251cc6
## What changed
Enable `multi_agent_v2` and the new `agent_message_board_mcp` feature to automatically start a temporary, tree-scoped HTTP MCP message board without plugin or endpoint configuration. The MCP feature defaults off and takes precedence over `agent_message_board`.
Share board state across parent and child agents while retaining each caller's host binding. Keep the server alive while participating threads remain, and serialize board tool calls through the MCP server configuration.
## Testing
Extend the HTTP board integration scenario to cover automatic discovery, parent-child message sharing, child subscriptions and posts after the parent unloads, serialized mutations, and absence of a persistent board database.
GitOrigin-RevId: 613183c14b2ab67dfb1aaf3a3abf338376d1cc05
## What changed
Add the disabled-by-default `cli_resume_account_check` feature. When enabled for `codex-tui` and `codex_exec`, reject resuming or attaching to a local thread if its recorded creator user or workspace differs from the current ChatGPT account. Return an error directing the user to sign in with the original account.
Carry creator IDs through stored thread metadata and check them before loading resume history. Preserve existing behavior for untagged threads, other clients, and authentication modes without a comparable ChatGPT account.
## Testing
Add integration coverage for account and workspace mismatches, matching accounts, legacy and paginated history, ID and path lookup, and the feature's default and bypass behavior. Verify that switching back to the original account permits attachment to a loaded thread and that creator metadata remains unchanged.
GitOrigin-RevId: a3ab089254703417dde0890a5f8d6326c4cbb75a
## What changed
Allow connector-wide app settings under `plugins.<plugin>.apps.<connector>` for plugins enabled by configuration. Merge these settings field by field, giving earlier plugin names precedence and applying explicit top-level `apps` fields last. Ignore nested `_default` settings.
Expose the merged app settings and their field origins through the config API. Keep app policy changes from invalidating the loaded-plugin cache.
## Testing
Add coverage for plugin enablement, merge precedence, field origins, config API output, cache reuse, and disabling an app through plugin configuration during explicit plugin mentions.
GitOrigin-RevId: a275319815915dc618ee606b10e0844248dbccb5
## What changed
Add the default-off `suppress_model_change_announcements` feature flag. When enabled, incremental context updates omit the model ID announcement after a model switch while still delivering changed base instructions and tool definitions.
Advance the model snapshot even when a switch emits no context update, so subsequent turns recognize the current model.
## Testing
Add coverage for omitted and explicit flag values, snapshot advancement without repeated updates, and request history across model switches, repeated turns, and compaction with announcements suppressed.
GitOrigin-RevId: 89c70f1e9d7981fd945fb8e41b1f98492717a07e
## Why
Plugin and skill catalog reads currently wait for the Apps server's initial `tools/list` to finish, even after its MCP transport is initialized.
## What changed
Add the disabled-by-default `features.apps_early_resource_discovery` flag. When enabled, host-owned Apps requests for `mcp/plugin` and `mcp/skill` resources can use the initialized transport while the initial tool inventory is pending. Server readiness still waits for the inventory to complete, and retries use normal readiness.
Bound early client acquisition by the configured startup timeout, propagate startup failures and cancellation, and reject pages if the connection, authentication scope, or resource cache generation changes during discovery.
## Testing
Add coverage for gated discovery, concurrent plugin and skill reads, startup timeouts and failures, cancellation, cache invalidation, and account switches. Verify that early discovery reuses a single handshake and tool inventory, including with the newer MCP protocol and connection sharing enabled.
GitOrigin-RevId: 955b1f6d43b733bdf9763c1caf2ce6913c686c81
## What changed
Allow gateway OAuth configuration to select `credentials_store = "file"` to persist credentials in plaintext at `$CODEX_HOME/secrets/gateway_oauth.json`. Keep `keyring` as the default.
Read, update, and delete file-backed credentials by credential ID, using atomic writes and the existing cross-process lock. Preserve the serialized provider identity when using the default store.
## Testing
Add an app-server test that completes gateway OAuth login with file storage, verifies Unix file permissions are `0600`, and checks that login remains successful after a server restart.
GitOrigin-RevId: dc1d17922bd80bf65034cbc5aa3d97959e962dcc
## Why
Cyber access program selection was restricted to the `openai` provider ID, preventing custom providers from accepting explicit program selections.
## What changed
- Add `capabilities.cyber_access_programs` to provider configuration and preserve it through remote thread configuration. Default to enabled for `openai` and disabled for other provider IDs, with explicit overrides taking precedence.
- Use the capability when forwarding `access_programs.cyber` and determining Daybreak availability in exec and the TUI. Refresh TUI eligibility when the server changes the selected provider.
- Preserve authentication, API-key feature gates, and catalog access checks; the capability does not grant program access.
## Testing
Add coverage for capability defaults and overrides, configuration round trips, custom-provider requests with both authentication types, API-key feature gating, compaction, WebSocket response reuse, exec selection, and TUI provider changes.
GitOrigin-RevId: 579f7c33c9e857ff5fedd08311aa8e3129740c1f
## What changed
Add the disabled-by-default `code_mode_host_output_truncation` feature flag. When enabled, Core requests server-side output truncation for its built-in code-mode session providers over both stdio and gRPC. Injected providers retain control of their session settings, and explicit session options pass through unchanged.
## Testing
Add coverage for both transports verifying that the host's output-limit notice survives a zero-token observation budget. Extend the shared-provider test to exercise an injected provider with the new flag enabled.
GitOrigin-RevId: edbb65e930bf544e3d2f8384767037a6fb82d451
Register `incremental_exec_tools` as an under-development feature, disabled
by default, and expose it in the configuration schema.
GitOrigin-RevId: 444767b7a46e3ada7efb3f6c4fb570feb299e0c7
## What changed
Add `otel.log_sse_deltas`, enabled by default. Setting it to `false` suppresses successful SSE event logs whose kind ends in `.delta` while preserving errors, completion events, and metrics.
Apply the setting to session and memory telemetry, support managed requirements, and expose it in the app-server configuration requirements API and generated schemas and bindings.
## Testing
Add coverage for delta log suppression with errors, completion logs, event counts, and duration metrics preserved. Extend configuration and app-server tests to cover defaults, overrides, and managed requirements.
GitOrigin-RevId: 751c7f357c41f51848b025c838246a733eb92e2f
## What changed
- Add the disabled-by-default `tui_extensions_statusline` feature to render configured status items and their picker preview through a shared UI tree renderer.
- Support text, HTTP(S) links, rows, spacers, dividers, and gaps with rendering budgets, text sanitization, and width-aware truncation that keeps the ellipsis outside hyperlinks.
- Use plain text for the extension status line and hide the picker's theme color toggle while preserving the saved color preference.
## Testing
Add coverage for tree serialization and URL validation, Unicode widths, hyperlink clipping, picker previews, color preference preservation, and token usage updates across renderer switches.
GitOrigin-RevId: a6b87c2b1096765d61296d73e142834fcd53ceee
## What changed
- Add the disabled-by-default `interrupt_on_cancel` feature to interrupt upstream inference when a Responses Lite turn is canceled, with a one-second cleanup deadline.
- Detach canceled WebSocket responses so replacement requests can open a new connection without waiting for cleanup.
- Add an optional `interrupt_on_cancel` override for thread samples, inheriting the parent setting when omitted.
## Testing
Add coverage for cancellation during inference and steering, replacement turns proceeding before cleanup finishes, and prompt cancellation of model response interceptors.
GitOrigin-RevId: 501368746fc04fd3fdbd45c1f34c75ce57f4e955
## What changed
- Add a sign-in wizard behind `features.gcp_setup_wizard`, disabled by default, to collect a project ID, optional location, and optional credential file. Users can leave the credential file blank to use Application Default Credentials.
- Delegate credential validation and configuration persistence to the app-server, showing progress and allowing retries after errors.
- Share editable single-line fields with Bedrock setup and compact the sign-in menu when terminal height is limited.
## Testing
Add onboarding tests and snapshots covering feature gating, field editing, navigation, validation failures, successful configuration persistence, and compact menu rendering.
GitOrigin-RevId: 96eb31e847aa1c2d503176be68ff2e2efe4722fa
## What changed
- Allow `requirements.toml` to manage OpenTelemetry logging flags, tool-result byte limits, environment, and log, trace, and metrics exporters.
- Apply higher-priority managed values over user configuration, replacing exporters atomically and warning when configured values conflict. Preserve unmanaged settings, including `span_attributes` and `tracestate`.
- Expose managed `otel` settings through `configRequirements/read`, apply them in `config/read` without ordinary field origins, and reject configuration writes that overlap managed fields.
- Distinguish omitted tool-result limits from explicit values while preserving the runtime default.
## Testing
Add coverage for requirement precedence, relative TLS paths, override warnings, managed write protection, effective configuration reads, and exporter serialization through the app-server API.
GitOrigin-RevId: 6a3343563bd3acb53a366ea6723684e3d0a4a01d
## Why
Memory consolidation inherits the session's service tier. Give background consolidation its own setting, defaulting to Standard.
## What changed
Add `memories.consolidation_service_tier` with a default of `"default"` and apply it to the consolidation agent. Normalize recognized tier aliases, including `"fast"` to `"priority"`, and expose the setting in the configuration schema.
## Testing
Add coverage for configuration parsing and alias normalization, Standard consolidation despite an Ultrafast session tier, and an explicit `"flex"` consolidation override.
GitOrigin-RevId: 58031ad56196152d212531d56e7fe9813f83317e
## What changed
Allow `model_catalog_url` under `[model_providers.openai]` while preserving the built-in provider's identity, authentication, and inference routing through `openai_base_url`. Reject other non-default overrides and require an HTTPS catalog URL on an allowed ChatGPT host, without embedded credentials.
Apply the same catalog override merging when checking managed provider requirements for existing threads, preserving each thread's inference endpoint even if user defaults change.
Document the required Codex catalog format, credential forwarding, and existing discovery and access restrictions.
## Testing
Add coverage for allowed and rejected catalog destinations, preservation of built-in provider settings, and managed requirement changes. Add integration coverage for API key and ChatGPT authentication that verifies separate catalog and inference routing.
GitOrigin-RevId: 4d91ada518ebd2a09cbf6ded0ddf4b11c92b77dd
## What changed
Add the disabled-by-default `omit_skill_descriptions` feature flag to omit descriptions from model-visible host, executor, and cloud skill catalogs while retaining names and locators. Adapt catalog introductions, usage instructions, and alias budget accounting to the selected policy.
Persist the description policy in catalog snapshots and refresh usage instructions when it changes. Ignore description-only edits in catalog deltas while descriptions are omitted.
## Testing
Add coverage for alias token budgets, policy changes with older snapshots, and suppressed description-only updates. Extend scenario snapshots to cover plugin visibility and catalog deduplication with descriptions omitted.
GitOrigin-RevId: 5bf1dcee8c04059c7a78998affc1efcdef8ec883
## What changed
Register `guardian_native_multi_agent_history` as an under-development feature,
disabled by default, and expose it in the configuration schema.
GitOrigin-RevId: d434750c1aa0cc78b36d1d661a4df0def5426f02
## What changed
Add the `features.simplified_selection_hints` flag, disabled by default. When enabled, replace detailed plugin capability instructions with a concise developer message identifying the selected plugin and directing the model to use its available skills and tools.
Continue omitting hints for plugins without available capabilities and bounding hint length. Preserve the existing detailed instructions when the flag is disabled.
## Testing
Cover plugin refresh in an existing thread with the flag enabled and disabled. Verify that explicit skill prompts precede the simplified plugin hint and that the hint uses the developer role.
GitOrigin-RevId: 64fc3347bd49fffe675f343a4733ced1b4e5e88c
## What changed
Allow omitting `gateway_oauth.delivery` to send the gateway token as `Authorization: Bearer …`. Custom headers and cookies remain available when a provider also needs its own credentials.
Reject conflicting provider authentication and duplicate delivery headers with actionable errors. For gateway bearer delivery, require `model_catalog_url` to share the scheme, host, and port of `base_url`. Consistently reject request header collisions across auth application methods.
## Testing
Add coverage for omitted delivery, provider credential conflicts, and model catalog origin validation. Update inference tests to verify gateway-only authentication while signed in and combined ChatGPT and gateway credentials in separate headers.
GitOrigin-RevId: 8564d3998511b3f6c55f3b65a01ed9056a90417e
## What changed
Keep inherited incremental tool declarations in MCP-disabled prediction forks and `thread/sample` requests, and append a developer notice that MCP tools are unavailable. Skip tool declaration updates within the inherited context window; new windows still declare the current tools.
Add the default-enabled `prediction_preserve_parent_tools` feature flag and its configuration schema entries.
## Testing
Update core snapshots and app-server tests to cover inherited declarations, the MCP-unavailable notice, preservation across MCP refresh, and continued parent tool availability.
GitOrigin-RevId: 3adf96c7d0e0093986dbdbd540bd47674a2c105c
## What changed
- Add the disabled-by-default `skill_catalog_deltas` feature flag to append new and updated skills without repeating unchanged catalog entries.
- Share a cumulative metadata budget across executor, cloud, and host catalogs, preserving usage across turns and resume. Removals emit no update and do not refund budget.
- Rebuild the current catalog and reset its budget after compaction, including any required skill root mappings in updates.
## Testing
Add unit and integration coverage for update costs, shared source budgets, feature rollback, and catalog updates across resume and compaction, with a request-history snapshot.
GitOrigin-RevId: e88b4265d7361498113d43fdc2e0260a9f930bbc
## Why
Hosts that only need installed plugin inventory should be able to skip startup requests for plugin discovery.
## What changed
Add the stable, default-enabled `features.plugin_discovery_prefetch` flag. Setting it to `false` skips startup prefetching of the plugin directory, featured plugins, and recommendations while preserving installed plugin cache refreshes and bundle downloads.
## Testing
Update app-server integration coverage to verify that installed plugin bundles download with discovery prefetch disabled and that no directory, featured, or suggested plugin requests are made during startup. Also cover listing remote marketplaces with the flag disabled.
GitOrigin-RevId: 7cc3072f6045131b9f1acb851f6240db75ac173e
## What changed
Change the default `thread_unload_delay_secs` from 1800 to 60 seconds. App-server threads become eligible for unloading after one minute with no subscribers and no activity. Update the configuration documentation, schema, and thread manager sample to match.
## Testing
Update the configuration test to cover the 60-second default, zero for immediate unloading, and an explicit 1800-second override.
GitOrigin-RevId: 0da8454eb25a6ef4b7e3665601982d2e0c183f7c
## What changed
- Add `tui.keymap.global.select_transcript` with an implicit `leader [` shortcut that follows the configured leader, respects explicit remapping or unbinding, and yields to existing bindings.
- Connect transcript overlays to keyboard selection, including Find, mouse selection, and navigation to the beginning of paged history. Give selection commands priority over remapped pager shortcuts.
- Close selection overlays on exit or after a confirmed copy-and-follow operation, preserving the pending close decision while clipboard confirmation is asynchronous.
- Show selection navigation and copy hints that adapt to the available footer width.
## Testing
Add coverage for shortcut dispatch, remapping, unbinding, and conflicts; overlay exit behavior; selection across history paging; mouse and keyboard selection interaction; and cursor and footer rendering snapshots.
GitOrigin-RevId: 8a920e5fa2b06ff0544d829ba30f8ecb654db0ee
## Why
Stdio servers without `CODEX_MCP_PROTOCOL_VERSION` use the legacy handshake, even when they support MCP `2026-07-28`.
## What changed
- Add the disabled-by-default `mcp_connection_sharing` feature to enable discovery for eligible local stdio servers.
- Recover from failed or late discovery with a fresh handshake when needed, waiting for the previous helper to release resources before restarting.
- Retain a working legacy connection when an upgrade attempt fails for the same account, except on authentication errors.
- Keep tool catalogs separate by protocol and invalidate legacy catalogs when discovery negotiates the modern protocol.
## Testing
Add regression coverage for failed and late discovery, legacy fallback, protocol-specific catalog reuse, message limits, and Windows descendant cleanup.
GitOrigin-RevId: 36c675ef3b81d32fccf06ccbddda2312cfe602c9
## What changed
Add `untrusted_as_tool_output` as an under-development feature, disabled by default, and expose it in the configuration schema. The flag is intended for rendering client-supplied untrusted context as standalone named tool outputs.
GitOrigin-RevId: 6fe630c8d380a87edb48e08887215c1ec17447ed
Charlie Marsh