fix(isponsorblocktv): add AVX CPU check before installation

PyApp requires AVX support. CPUs without AVX (e.g. Intel N3160) crash
with SIGILL. Exit early with clear error message. Fixes #13191.

install/isponsorblocktv-install.sh

@@ -13,6 +13,11 @@ setting_up_container
 network_check
 update_os
 
+if ! grep -q ' avx ' /proc/cpuinfo 2>/dev/null; then
+  msg_error "CPU does not support AVX instructions (required by iSponsorBlockTV/PyApp)"
+  exit 106
+fi
+
 fetch_and_deploy_gh_release "isponsorblocktv" "dmunozv04/iSponsorBlockTV" "singlefile" "latest" "/opt/isponsorblocktv" "iSponsorBlockTV-x86_64-linux"
 
 msg_info "Setting up iSponsorBlockTV"

misc/build.func

@@ -3544,10 +3544,8 @@ build_container() {
   auto) NET_STRING="$NET_STRING,ip6=auto" ;;
   dhcp) NET_STRING="$NET_STRING,ip6=dhcp" ;;
   static)
-    if [[ -n "$IPV6_ADDR" ]]; then
-      NET_STRING="$NET_STRING,ip6=$IPV6_ADDR"
-      [ -n "$IPV6_GATE" ] && NET_STRING="$NET_STRING,gw6=$IPV6_GATE"
-    fi
+    NET_STRING="$NET_STRING,ip6=$IPV6_ADDR"
+    [ -n "$IPV6_GATE" ] && NET_STRING="$NET_STRING,gw6=$IPV6_GATE"
     ;;
   none) ;;
   esac