## Why
A lost Cloud reply stream previously required reopening the conversation, even when it was idle. Recover the displayed conversation automatically while holding queued input until its reply stream is usable.
## What changed
- Add bounded retries for transient stream failures in the displayed, idle conversation, with credential and network-policy checks. Keep explicit reopen behavior when recovery is unavailable or fails.
- Enable HTTP/2 keepalive pings for Cloud connections.
- Queue input while disconnected and resume ordinary submission after recovery. Mark recovered history as potentially incomplete so an explicit reopen reloads missed turns while preserving drafts and reconciling pending submissions.
- Store retained input per backend and apply background settings updates to the owning backend's drafts.
## Testing
Add regression coverage for queued input during disconnection and extend resume and backend-handoff tests to cover history refresh, draft preservation, and retained settings.
GitOrigin-RevId: 3d753e53d3c0d594680a90cac8a75fe33b91e219
## Why
Command Center retains tasks across backend switches. Opening a retained task must use its owning backend, and restoring its draft must account for history or settings that changed while another backend was displayed.
## What changed
- Track each thread's first observed backend, reject conflicting ownership, and switch to the owning backend when opening a retained task. Require users to open tasks on other backends before running task actions.
- Keep discovery cursors, initialization, and pins per backend. Scope refreshes and usage requests to their owner, and handle background archive and delete notifications without consuming the displayed backend's pagination budget.
- Verify cached blank sessions are still idle and have no turns before reusing them, with a history-read fallback for older servers. Otherwise, resume saved history and preserve current server collaboration settings when restoring drafts.
- Use only interactive task-list pages for cloud discovery, which does not support the additional source filters.
## Testing
Add regression coverage for ownership conflicts, action routing, pins across backends, background removals, usage isolation, cloud discovery, and draft restoration with blank or populated history, including older-server fallbacks.
GitOrigin-RevId: 0d0913ec38dc16a839823008a4a84aa46ad8e6c6
## Why
Opening a saved side chat waits for thread resume and history loading. Keep the chooser usable during that work and switch conversations only if the user still wants to open the chat.
## What changed
- Prepare saved chats in the background and show opening, waiting, and retry states in the sidebar. Allow cancellation and keep only the latest queued destination, with at most two preparations in flight.
- Ignore stale completions after navigation, archiving, disconnects, or backend changes, and release unclaimed subscriptions on their original connection.
- Preserve live events, settings, read receipts, and pending approvals received during loading. Anchor paginated history to the resumed snapshot to avoid overlap with live events.
- Carry held-key suppression across conversation switches.
## Testing
Add regression tests for retry and supersession, cancellation, stale completions, subscription cleanup, live updates during attachment, and held keys, plus snapshots for waiting and retry rows.
GitOrigin-RevId: 2c7d94482078f16895049ce79b242d3eb0d92f40
## Why
Command center search only filtered tasks already loaded for browsing, leaving older tasks undiscoverable without manually loading more history.
## What changed
- Scan history on the active backend for case-insensitive matches in task names, previews, and working directories, using a separate paging cursor for each query.
- Add loading, retry, and `Show more matches` states. Cancel superseded searches and ignore stale results.
- Keep history matches separate from browse results and restore the previous selection when leaving search.
- Preserve the original task preview for search while displaying the latest prompt in task details.
## Testing
Extend discovery and command center tests to cover older history matches, fresh queries after browse pagination is exhausted, selection restoration, actions on search results, loading and retry states, and separate original previews and latest prompts.
GitOrigin-RevId: 9864ee006a14bd232e9cfd7ab2ee099c84667597
## Why
Cloud messages previously accepted only plain text, and switching a draft to Cloud waited for session preparation without processing composer input.
## What changed
- Support ordered text and image parts in Cloud submissions and user-message summaries, preserving attachment placeholders, image detail, and client message IDs.
- Accept inline data URLs and uploaded file IDs, including image-only messages. Reject invalid references and text spans locally, and cap encoded image requests at 3.75 MiB while retaining the existing plain-text limit.
- Keep the composer editable and redraw the TUI while Cloud prepares a conversation. Carry the latest draft, attachments, and Vim mode into the destination, retain drafts on failure, and prevent submission to the outgoing session during the handoff.
- Preserve buffered paste input and pending clipboard reads across the handoff, with connection and failure hints.
## Testing
Add regression coverage for image wire encoding, receipt identity, validation and size boundaries, draft editing during successful and failed handoffs, clipboard completion, Vim state, and attachment recovery after rejected submissions.
GitOrigin-RevId: 0cbcde0ab89ba961780b5f88456057e6b6a19cd5
## What changed
Pass the local project's GitHub origin to cloud prewarming so new cloud threads can provision a repository checkout. Preserve the attached local project when switching backends and resolve its origin for each thread start.
Normalize supported GitHub origins to credential-free HTTPS URLs and select a repository-specific cloud working directory. Unsupported origins retain the blank environment behavior. Keep project metadata outside the app-server wire protocol, and fix HTTP Git URL parsing so query strings and fragments cannot be mistaken for authority text.
## Testing
Add coverage for project routing, origin normalization and rejection, managed environment encoding, local project retention, and Git URL credential stripping.
GitOrigin-RevId: 5859769965faf060461ccc1cbb3fd48f8e2f2155
## What changed
- Add Space to set the default provider from Model providers settings, persisting `model_provider` on the connected server. Keep provider details available and disable selection when server configuration or client launch settings fix the provider.
- Apply the choice to `/new` while preserving the current chat. Refresh account details for new chats and reject account data that does not match the started provider.
- Block stale `/model` choices during saves and after confirmed or uncertain provider changes, including across reconnects. Tell users to restart the app server and TUI to refresh the model list, and discard queued picker actions from another backend or chat.
## Testing
Add coverage for provider saves, retry after disconnection, concurrent-save prevention, stale model choices, and account/provider matching, with updated provider-picker snapshots.
GitOrigin-RevId: af6d149f7de7a2eaa09a31935f7088faa64d6a59
## 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
## Why
The session picker can list conversations from multiple backends, but selecting a conversation owned by another backend was rejected.
## What changed
- Resume selected conversations through their owning backend, preparing the destination before replacing the current conversation. Preserve drafts and restore the destination's settings, account state, model catalog, and workspace services.
- Block backend switches during an active turn and retain the current conversation when destination preparation fails.
- Queue background backend requests until that backend is displayed, removing requests that are resolved or disconnected. Isolate background events from the displayed conversation while continuing to deliver notifications to a background voice session.
- Track backend ownership for thread detachment, startup results, and reconnect attempts.
- Remove the `yaml-rust` advisory exception from `codex-rs/deny.toml`.
## Testing
Add regression coverage for backend handoff errors, detaching through the source connection, clearing stale provider errors, deferred request delivery and cleanup, and voice-session closure on a background backend.
GitOrigin-RevId: 1bba84f16831af1d5295c1404f48803ce0608d3d
Benjamin Carlsson