[quickbeard]

What

Both apps already checked for updates at launch. Neither told the user.

Desktop

updater.start() has always run a check at launch, but on the new layout the only thing that surfaced it was a small arrow in the titlebar — and only once the download had finished. (The legacy layout's UpdateAvailableToast is unreachable: newLayoutDesigns is always true.)

New fork-only packages/app/src/components/dialog-update.tsx:

• <UpdatePrompt /> renders nothing, watches the updater, and opens the dialog the first time the state becomes available or ready — once per app run, not once per mount.
• <DialogUpdate /> names the version and offers Not yet plus the state-appropriate action, reusing useUpdaterAction(): Download when automatic downloading is off, Install and restart once it is downloaded, a loader while either runs. Existing toast.update.* / settings.updates.action.* keys, so no new strings.

Mounted from pages/layout-new.tsx (one import, one element).

Terminal

The TUI has had a confirm dialog for installation.update-available all along, and it could never appear. cmd/tui.ts fired checkUpgrade on a one-second timer; the TUI registers its event.on(...) handlers while it renders, a few hundred milliseconds later; and Rpc.emit is a bare postMessage — an event with no subscribers is dropped, not queued. Traced end to end: worker forwards the event at T, the App's handlers register at T+800ms, event gone.

Fix: TuiInput gains onReady?: () => void, called once the App has registered its handlers; cmd/tui.ts passes checkUpgrade as onReady and drops the timer. Ordering rather than a longer timeout, so it cannot race.

Also in cli/upgrade.ts: a newer version now asks unless the user opted into automatic patch installs. const silent = config.autoupdate === true && getReleaseType(...) === "patch". autoupdate: false and CODEV_DISABLE_AUTOUPDATE still skip the check; "notify" and CODEV_ALWAYS_NOTIFY_UPDATE are unchanged.

Test plan

• Desktop, seen working: ran bun run dev with the updater backend temporarily stubbed to report version 9.9.9, and confirmed the dialog over the renderer via CDP — "Update available / A new version of CoDev (9.9.9) is now available to install." with Not yet and Install and restart. Stub reverted.
• Terminal, seen working: ran the TUI from source with Installation.latest() temporarily stubbed, and the dialog appears at startup — "Update Available / A new release v9.9.9 is available. Would you like to update now?" with Skip / Confirm. Before the fix the same stub produced nothing; traces showed the event forwarded by the worker and delivered into an empty handler set. Stub reverted.
• bun typecheck in packages/app, packages/tui, packages/opencode.
• bun run test:unit in packages/app (695 pass); bun test in packages/tui (266 pass); bun test test/cli in packages/opencode (375 pass).

DIVERGENCES.md gains two rows (the three upstream CLI/TUI files, and the layout-new.tsx mount); CHANGELOG.md gains two Unreleased entries under Updates.

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