Drops in branded assets the v0.5.1 installer rewrite (whiptail -> gum)
will consume: ASCII banner, sourceable GUM_* env-var palette matching
the veilor-black KDE color scheme, and an INSTALLER.md walkthrough.
The existing v0.5.0 veilor-installer script is intentionally untouched
so the swap can land in a separate, focused PR.
Co-authored-by: s8n-ru <279801990+s8n-ru@users.noreply.github.com>
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
