fix(installer): handle libasound2t64 rename in Debian 13 and derivatives

Update the installer script to dynamically detect and use the correct package name
(libasound2 or libasound2t64) via apt-cache probing, ensuring compatibility across
Debian family distributions like Ubuntu 24.04 and Devuan.

Revise the README note to reflect this transparent handling.

README.md

@@ -35,7 +35,7 @@ Other derivatives are detected automatically via the `ID_LIKE` field in `/etc/os
 
 - Tuxedo OS 3 (i.e. Ubuntu 24.04)
 - Debian 13
-  - NOTE: The Debian project is no longer using a standard package name for `libasound2`. Not to worry, apt will automatically select the `libasound2t64` packages it needs. For all derivative distributions, therefore, the package name will remain "libasound2". 
+  - NOTE: Debian 13 and Ubuntu 24.04 renamed `libasound2` to `libasound2t64` as part of the Y2038 transition, but not every derivative followed (Devuan, for example, still ships `libasound2`). The installer probes `apt-cache` at runtime and selects whichever name is a real package on the host, so this is handled transparently across the Debian family.
 - Devuan 6.1 Excalibur 
   - NOTE: server-mode installation is unavailable here, because Devuan does not use systemd. The installer detects this and refuses `SYSTEMD_MODE=install` up front rather than failing mid-install.
 - Manjaro

install_sdrplay_universal.sh

@@ -206,7 +206,24 @@ run_root(){ [[ "$DRY_RUN" -eq 1 ]] && echo "[DRY-RUN] $SUDO $*" || ${SUDO:-} "$@
 #   4. Add detection logic in detect_distro_family()
 #######################################
 
-debian_packages(){ echo "curl tar ca-certificates gzip libusb-1.0-0 libasound2 libuuid1 libudev1 libmp3lame-dev libhamlib-dev"; }
+_DEB_ASOUND=""
+debian_resolve_asound(){
+    [[ -n "$_DEB_ASOUND" ]] && return
+    # The libasound2 → libasound2t64 rename (Y2038 transition) hit Debian 13
+    # and Ubuntu 24.04, but not all derivatives followed. On noble libasound2
+    # is purely virtual; on Devuan libasound2t64 doesn't exist. Probe apt-cache
+    # to pick whichever name is a real package on this host.
+    if apt-cache show libasound2t64 2>/dev/null | grep -q "^Package: libasound2t64"; then
+        _DEB_ASOUND="libasound2t64"
+    else
+        _DEB_ASOUND="libasound2"
+    fi
+}
+
+debian_packages(){
+    debian_resolve_asound
+    echo "curl tar ca-certificates gzip libusb-1.0-0 $_DEB_ASOUND libuuid1 libudev1 libmp3lame-dev libhamlib-dev"
+}
 debian_check(){ dpkg -s "$1" >/dev/null 2>&1; }
 debian_install(){
     ensure_sudo