fix: Handle libvolk package name difference on Raspberry Pi OS

On Raspberry Pi OS Bookworm the package is libvolk2-dev, not libvolk-dev.
Also soft-fail optional SDR hardware libs (libjemalloc, libnng, SoapySDR,
HackRF, LimeSuite) so a missing package no longer aborts the SatDump build.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

setup.sh

@@ -761,11 +761,23 @@ install_aiscatcher_from_source_macos() {
 install_satdump_from_source_debian() {
   info "Building SatDump v1.2.2 from source (weather satellite decoder)..."
 
+  # Core deps — hard-fail if missing
   apt_install build-essential git cmake pkg-config \
-    libpng-dev libtiff-dev libjemalloc-dev libvolk-dev libnng-dev \
+    libpng-dev libtiff-dev libzstd-dev \
-    libzstd-dev libsoapysdr-dev libhackrf-dev liblimesuite-dev \
     libsqlite3-dev libcurl4-openssl-dev zlib1g-dev libzmq3-dev libfftw3-dev
 
+  # libvolk: package name differs between distros
+  #   Ubuntu / Debian Trixie+: libvolk-dev
+  #   Raspberry Pi OS Bookworm / Debian Bookworm: libvolk2-dev
+  apt_try_install_any libvolk-dev libvolk2-dev \
+    || warn "libvolk not found — SatDump will build without VOLK acceleration"
+
+  # Optional SDR hardware libs — soft-fail so missing hardware doesn't abort
+  for pkg in libjemalloc-dev libnng-dev libsoapysdr-dev libhackrf-dev liblimesuite-dev; do
+    $SUDO apt-get install -y --no-install-recommends "$pkg" >/dev/null 2>&1 \
+      || warn "${pkg} not available — skipping (SatDump can build without it)"
+  done
+
   # Run in subshell to isolate EXIT trap
   (
     tmp_dir="$(mktemp -d)"