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shadowdaoandClaude Opus 5 9fadfbc37a
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Make the AppImage updatable, and drop the deb and rpm
An AppImage manager can adopt the current build but never update it: the image
carries no update information, which is the string that tells such a tool where
to look for a newer one. It also carries no AppStream metadata, so a manager
has nothing to show but a filename — appimagetool has been warning about that
on every build — and linuxdeploy leaves `Categories=` empty, which files the
app nowhere in a desktop menu.

All three are fixed while the image is already unpacked for the wayland fix, so
the cost is a few lines rather than a second pass. `unbundle-wayland-client.sh`
is now `finalize-appimage.sh`, since it does more than unbundle.

The update URL is a **fixed** `linux-latest` tag on the GitHub mirror, which is
where updates are pulled from — deliberately not `releases/latest`. `latest`
follows whichever release is newest, and the Gitea-to-GitHub backfill creates
one GitHub release per Gitea tag, including the `-win` and `-mac` tags that
carry no AppImage. A URL that can resolve to a release with no AppImage in it
fails on users' machines and nowhere else.

The output is named for that tag too, and that is not cosmetic: zsync records
a *relative* filename which a client resolves against the .zsync URL it
fetched, so a versioned name would send every client after the build it already
has. Verified by reading the generated header — `Filename: Triple-C_x86_64
.AppImage` — and the image's own `.upd_info` section, which is where the tag
actually lives. My first guard checked the .zsync for the tag and failed
correctly, which is how that distinction got found rather than shipped.

Range requests were confirmed against the mirror before building on them: 206
with a correct content-range, so updates are real deltas rather than an 85 MB
re-download.

The .deb and .rpm go. They are two more artifacts to build, publish and keep
working for an audience already served by the one file that runs on every
distribution, and neither could ever self-update — which is now the difference
that matters. Older releases keep theirs. The Linux job passes
`--bundles appimage` rather than changing `tauri.conf.json`, so macOS and
Windows are untouched.

Verified against the real 0.4.19 artifact: it repacks, the AppStream file and
filled-in Categories land inside the image, the update string resolves to the
fixed tag, and the wayland fallback still holds. Both publisher failure paths
refuse rather than half-publishing — no token, and missing artifacts.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011YPqHpjV4EL6RNEwrRKqQm
2026-09-02 17:10:44 -07:00
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