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Benjamin Carlsson d659419fe7 Preserve the current Cloud task until navigation is ready (#61490 )

## Why

Opening another Cloud task can fail while loading its history. Keep the current chat, draft, and reply stream intact until the replacement is ready.

## What changed

- Prepare Cloud resumes with a scoped history handle and commit the attachment only after initial history hydration succeeds.
- Discard abandoned or failed preparations, reuse healthy existing attachments, and preserve buffered events through the handoff.
- Route Command Center task selections through the owning backend, including tasks found only in history search.

## Testing

Add regression coverage for failed history loading preserving the chat and draft, prepared stream handoffs and cancellation, backend routing, and history requests completing while a large reply stream remains unread.

GitOrigin-RevId: 67aab50bad4e9ce9216716da459fd5447f133ae1

2026-11-14 08:47:48 +00:00

src

Preserve the current Cloud task until navigation is ready (#61490 )

2026-11-14 08:47:48 +00:00

tests

Add managed command checkpoints requiring fresh human approval (#58045 )

2026-10-29 11:23:51 +00:00

BUILD.bazel

fix(bazel) add missing app-server-client BUILD.bazel (#14027 )

2026-03-09 03:42:54 +00:00

Cargo.toml

Reconnect idle Cloud conversations after transient stream loss (#60969 )

2026-11-12 01:57:33 +00:00

README.md

Prevent unread events from blocking in-process requests (#38381 )

2026-08-13 13:57:25 +00:00

README.md

codex-app-server-client

Shared in-process app-server client used by conversational CLI surfaces:

codex-exec
codex-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: InProcessServerEvent
- ServerRequest
- ServerNotification
- LegacyNotification

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/start or thread/resume
app-server returns the immediate typed response
richer session metadata may arrive later as a SessionConfigured legacy 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_CAPACITY by 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.