[Bug]: Desktop nightly auto-update fails with ERR_UPDATER_NO_PUBLISHED_VERSIONS. All 10 latest releases are all preview releases, so no -nightly entry is found #35457

Before submitting

• I searched existing issues and did not find a duplicate.
• I included enough detail to reproduce or investigate the problem.

Area

apps/desktop

Steps to reproduce

1. Run the desktop app on the nightly update channel (e.g. 0.1.9-nightly.*).
2. Let the periodic update check run (or trigger a manual check) while the repository's 10 most recent published releases are all 0.1.10-preview.* test releases — this is the current state; releases.atom returns only preview entries.
3. The check fails, and it keeps failing on every subsequent poll.

Expected behavior

The updater finds the newest -nightly. release (v0.1.10-nightly.20261112.4580, published 2026-11-12 10:48 UTC, includes nightly-mac.yml and desktop assets) and offers/installs it.

Actual behavior

Every update check fails with ERR_UPDATER_NO_PUBLISHED_VERSIONS (all checks since the afternoon of 2026-11-12; checks earlier the same day still reported "update available").

Cause: the bundled electron-updater (6.8.9) GitHubProvider.getLatestVersion() fetches releases.atom, which lists only the ~10 most recent releases, then walks the entries looking for one whose semver prerelease identifier equals the configured channel (nightly). The current run of 0.1.10-preview.* releases fills the entire feed window, so no entry has channel nightly and the provider throws — even though the nightly releases still exist and are returned by the releases REST API.

Impact

Minor bug or occasional failure

Version or commit

0.1.9-nightly.20261110.4478 (desktop, nightly channel; bundled electron-updater 6.8.9)

Environment

macOS (Apple Silicon), T3 Code (Nightly) desktop app, update channel nightly

Logs or stack traces

{"component":"desktop-updater","channel":"nightly","operation":"check","cause":"Error [ERR_UPDATER_NO_PUBLISHED_VERSIONS]: No published versions on GitHub"}

Workaround

Wait for the next -nightly. release to re-enter the feed window (auto-update then resumes on its own), or update manually from the releases page. Removing or consolidating the preview test releases would also restore the nightly channel immediately.