fix: model catalog shows download status, GPU detection in toolbox

- Catalog * indicator now searches recursively (finds models in subdirs)
- GPU verification suppresses toolbox crun stderr (directory not found noise)
- Matches on "radeon" and "available devices" for Vulkan output

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/benchmark/setup.sh

@@ -60,7 +60,7 @@ fi
 log_info "Verifying GPU access in toolboxes..."
 for tb in "${REQUIRED_TOOLBOXES[@]}"; do
     if echo "$existing" | grep -qF "$tb"; then
-        if toolbox run -c "$tb" -- llama-cli --list-devices 2>&1 | grep -qi "gpu\|vulkan\|rocm"; then
+        if toolbox run -c "$tb" -- llama-cli --list-devices 2>/dev/null | grep -qi "vulkan\|rocm\|radeon\|available devices"; then
             log_success "GPU accessible in $tb"
         else
             log_warn "GPU may not be accessible in $tb — check device mappings"
@@ -90,9 +90,8 @@ printf "  ${BOLD}%-28s %-10s %-8s %s${RESET}\n" "Name" "Category" "Size" "Descri
 echo "  $(printf '%.0s─' {1..70})"
 while IFS='|' read -r name repo file size_gb category desc; do
     [[ "$name" =~ ^#.*$ || -z "$name" ]] && continue
-    local_file="$MODEL_DIR/$file"
     status=" "
-    if [[ -f "$local_file" ]]; then
+    if find -L "$MODEL_DIR" -name "$file" -print -quit 2>/dev/null | grep -q .; then
         status="*"
     fi
     printf "  %s %-27s %-10s %4s GB  %s\n" "$status" "$name" "$category" "$size_gb" "$desc"