tauri-action names the installers with the version, which would break any
fixed download URL on the next release. Add a workflow step that uploads
version-less aliases (TutaBridge-macOS.dmg, TutaBridge-Windows-setup.exe,
TutaBridge-Linux.AppImage/.deb/.rpm) next to them, and point the README
download links at releases/latest/download of those stable names so they
follow every future release automatically. The CLI assets were already
version-less. The current rc.1 release was backfilled with the aliases.
`workflow_dispatch` builds the installers on all three OSes and uploads
them as workflow artifacts (no tag, no release) — so the pipeline can be
validated without burning a version tag. A real `v*` tag still produces
the draft release. GUI bundles are globbed from the per-OS bundle dir.
On a `v*` tag: builds GUI installers for macOS (universal .dmg),
Windows (.msi/.exe), and Linux (.deb/.AppImage) via tauri-action, plus
the headless CLI binary per OS, and attaches them to a draft GitHub
Release for review before publishing.