Closes the regression reported in https://github.com/multica-ai/multica/issues/2515 that
PR #2437 only half-fixed in v0.2.31.
Two gaps remained on Ubuntu/GNOME:
1. The .deb shipped only the source 1024×1024 PNG under
/usr/share/icons/hicolor/, with no usable smaller sizes. GNOME's hicolor
lookup walks 16…512 and falls back to the theme default when none
match, so the launcher had no icon. The auto-generation pass in
electron-builder silently produced only the source size for us. Drop
pre-rendered 16/24/32/48/64/128/256/512 PNGs into build/icons/ and
point `linux.icon` at the directory so packaging stops depending on
the toolchain re-running that generation correctly.
2. WM_CLASS at runtime was `@multica/desktop`, while the .desktop file
declared `StartupWMClass=Multica`. PR #2437 assumed Electron derives
WM_CLASS from electron-builder.yml's `productName`, but Electron
reads `app.getName()`, which reads the *packaged ASAR's* package.json
— productName if present, otherwise name. Our source
apps/desktop/package.json had no top-level productName, so the ASAR
carried only `name: "@multica/desktop"` and Chromium emitted that as
WM_CLASS, breaking the .desktop association and the dock icon.
Fixed in two anchors for belt-and-braces: add
`"productName": "Multica"` to apps/desktop/package.json (so the ASAR
carries it and app.getName() resolves correctly by default), and call
`app.setName("Multica")` in the production branch alongside the
existing dev-only setName so a future regression in package.json or
the build pipeline cannot silently re-break WM_CLASS.
The `StartupWMClass: Multica` declaration in electron-builder.yml stays
pinned and the surrounding comment has been rewritten to record the
correct WM_CLASS derivation.
Verification on a real Ubuntu install:
- `dpkg-deb -c multica-desktop-*-linux-amd64.deb | grep hicolor` lists
≥8 sizes.
- `xprop WM_CLASS` on the running window prints `"multica", "Multica"`.
- Launcher and dock both show the Multica logo with no manual
~/.local/share/icons workaround.
Co-authored-by: multica-agent <github@multica.ai>
