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Wire desktop updates through a generic feed

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electron-builder now publishes latest-linux.yml / latest.yml and embeds
app-update.yml plus package-type, so electron-updater runs pacman -U or
dpkg -i through pkexec for packages and updates the per-user NSIS install
without elevation. The app checks only when asked (menu item), asks before
downloading and before installing, and J621_UPDATE_URL overrides the feed
for tests or forks.

deploy/push_desktop.sh builds and publishes the artifacts to
deploy/data/desktop, which the frontend nginx mounts read-only at
/desktop/. Verified detection and up-to-date handling against a local feed
with the packaged Arch build.
This commit is contained in:
JakeBreath
2026-09-20 17:32:41 -05:00
parent 84ec431441
commit 7c39383655
11 changed files with 312 additions and 14 deletions
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desktop/README.md
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@@ -55,12 +55,34 @@ It installs to `/opt/J621` with a `/usr/bin/j621-desktop` symlink and a
rights are needed to install or update it — but it is unsigned, so SmartScreen
will warn, and it has not been smoke-tested on real Windows.
## Updates
The app checks only when asked (**J621 → Check for updates…** in the menu):
Linux packages install through pacman/dpkg, which needs administrator rights,
and the Windows build is unsigned, so nothing installs silently. The check
reads `latest-linux.yml` / `latest.yml` from the feed configured in
`electron-builder.yml` (`publish.url`, baked into `app-update.yml`); set
`J621_UPDATE_URL` to point a build at another feed (the smoke test uses this).
Publishing a release:
1. Bump `version` in `desktop/package.json` — that is what the updater compares.
2. `./deploy/push_desktop.sh --win` builds deb/pacman/NSIS and copies the
artifacts plus both channel files into `deploy/data/desktop/`, which the
frontend nginx serves read-only at `/desktop/`.
3. Existing installs find the new version on their next manual check.
`package-type` in the app resources tells electron-updater whether to run
`pacman -U` or `dpkg -i` (both via pkexec/sudo); the per-user NSIS install
updates without elevation.
## Smoke test
`npm run smoke` builds everything, runs Electron headless through `xvfb-run`
and checks that the bundled SPA loads over `app://j621`: the SPA fallback, an
asset fetch, `localStorage`, OPFS, WebCodecs and the preload bridge. It exits
non-zero on failure.
non-zero on failure. With `J621_UPDATE_URL` set it also checks that the feed
reports the expected version.
## Backend CORS