Terminal: Das prompt, dprompt and dbanner (0.9.1)

- das-shell 0.1.0: the Das two-line bash prompt by default (replaces the
  PS1 of Void's skel .bashrc once), dprompt (Textual prompt builder with
  presets and live preview) and dbanner (SSH login banner editor: canvas
  tools, fields with values, widgets, das-banner service for cached ones,
  Das OS logo and tryzub pictures). Python tests in make test.
- das-server 0.3.0 depends on das-shell; the server installer mentions
  dprompt and dbanner; the desktop image includes it.
- run-qemu.sh forwards the guest's SSH to localhost:2222.
- Hardware fixes: Ventoy menu icon, boot menu titles "Das OS <version>".

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/container/build-iso.sh

@@ -101,6 +101,17 @@ sed -i \
   -e 's/-comp "${SQUASHFS_COMPRESSION}"/& -b 1M -Xbcj x86/' \
   "$mklive"
 
+# Boot menu entries name the Das OS version instead of mklive's
+# "<title> <kernel version> <arch>" (GRUB for UEFI, isolinux for BIOS).
+isolinux=/opt/void-mklive/isolinux/isolinux.cfg.in
+entry_title='ENTRY_TITLE="${BOOT_TITLE} ${KERNELVERSION} ${title_sfx}(${TARGET_ARCH})"'
+if ! grep -qF -- "$entry_title" "$mklive" || ! grep -qF '@@BOOT_TITLE@@ @@KERNVER@@ @@ARCH@@' "$isolinux"; then
+  echo "build-iso: boot menu titles not found in mklive, mklive changed; update this script" >&2
+  exit 1
+fi
+sed -i 's/ENTRY_TITLE="${BOOT_TITLE} ${KERNELVERSION} ${title_sfx}(${TARGET_ARCH})"/ENTRY_TITLE="${BOOT_TITLE}${title_sfx:+ ${title_sfx% }}"/' "$mklive"
+sed -i 's/@@BOOT_TITLE@@ @@KERNVER@@ @@ARCH@@/@@BOOT_TITLE@@/' "$isolinux"
+
 rsvg-convert /work/live/branding/splash.svg --output "$work/splash.png"
 rm -f "$iso"
 
@@ -115,6 +126,6 @@ SPLASH_IMAGE=$work/splash.png ./mklive.sh \
   -I "$include" \
   -l "$locale" \
   -k us \
-  -T "$title" \
+  -T "$title $version" \
   -C "$cmdline" \
   -o "$iso"