- Bump the KDE runtime/SDK from 6.8 (now end-of-life per Flathub) to the
current stable 6.10.
- The .desktop file's Icon=orbithub didn't match the app ID
(io.orbithub.OrbitHub), so Flatpak's export step skipped it entirely
("Icon referenced in desktop file but not exported"). Use the app-ID-
matching icon name everywhere instead, and drop the now-redundant
renamed orbithub.svg install() rule that existed only for the old name.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>