## Why TUI preferences and persistence paths belong to the local client, while thread configuration and account requirements may come from the active app server. Keeping both in the same resolved `Config` can replace live local preferences when a thread is resumed, forked, reconnected, or switched. ## What changed - Add `LocalSettings` as the TUI-owned source for UI, history, notice, and local persistence settings, and preserve it across session lifecycle transitions. - Write preference changes to the selected user config file and reload local settings from disk when changing roots. - Use the app server's account response for authentication-dependent onboarding and status UI instead of the local model-provider configuration. - Retain platform family and OS metadata reported by remote app servers. ## Testing - Cover local setting defaults, overrides, persistence destinations, reloads, and preservation across widget replacement and root switching. - Cover remote platform metadata and server-controlled authentication UI. GitOrigin-RevId: dbc2965fb1d6cbecb3f973f6133f3dcd4467b753
codex-app-server-client
Shared in-process app-server client used by conversational CLI surfaces:
codex-execcodex-tui
Purpose
This crate centralizes startup and lifecycle management for an in-process
codex-app-server runtime, so CLI clients do not need to duplicate:
- app-server bootstrap and initialize handshake
- in-memory request/event transport wiring
- lifecycle orchestration around caller-provided startup identity
- graceful shutdown behavior
Startup identity
Callers pass both the app-server SessionSource and the initialize
client_info.name explicitly when starting the facade.
That keeps thread metadata (for example in thread/list and thread/read)
aligned with the originating runtime without baking TUI/exec-specific policy
into the shared client layer.
Transport model
The in-process path uses typed channels:
- client -> server:
ClientRequest/ClientNotification - server -> client:
InProcessServerEventServerRequestServerNotificationLegacyNotification
JSON serialization is still used at external transport boundaries (stdio/websocket), but the in-process hot path is typed.
Typed requests still receive app-server responses through the JSON-RPC result envelope internally. That is intentional: the in-process path is meant to preserve app-server semantics while removing the process boundary, not to introduce a second response contract.
Bootstrap behavior
The client facade starts an already-initialized in-process runtime, but thread bootstrap still follows normal app-server flow:
- caller sends
thread/startorthread/resume - app-server returns the immediate typed response
- richer session metadata may arrive later as a
SessionConfiguredlegacy event
Surfaces such as TUI and exec may therefore need a short bootstrap phase where they reconcile startup response data with later events.
Backpressure and shutdown
- Command queues and the embedded runtime remain bounded, using
DEFAULT_IN_PROCESS_CHANNEL_CAPACITYby default. - The facade's local consumer event queue is unbounded and preserves notification order. This keeps the worker draining the bounded runtime while a caller waits for a request, preventing unread notifications from blocking its response.
shutdown()performs a bounded graceful shutdown and then aborts if timeout is exceeded.