bootstrap.sh: emit dnf install hint on Fedora/RHEL clients

Was apt-only on Linux; republic-laptop is Nobara so installs use dnf and
yaml is python3-pyyaml (not python3-yaml).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

bootstrap.sh

@@ -114,7 +114,6 @@ fi
 if [ "${#missing[@]}" -gt 0 ]; then
     echo "missing required tools: ${missing[*]}" >&2
     if [ "$OS" = "Darwin" ]; then
-        # Translate Debian package names to brew/pip equivalents.
         brew_list=()
         for m in "${missing[@]}"; do
             case "$m" in
@@ -123,8 +122,20 @@ if [ "${#missing[@]}" -gt 0 ]; then
             esac
         done
         [ "${#brew_list[@]}" -gt 0 ] && echo "  brew install ${brew_list[*]}" >&2
+    elif command -v dnf >/dev/null 2>&1; then
+        # Fedora/RHEL/Nobara: python yaml package is python3-pyyaml.
+        dnf_list=()
+        for m in "${missing[@]}"; do
+            case "$m" in
+                python3-yaml) dnf_list+=("python3-pyyaml") ;;
+                *)            dnf_list+=("$m") ;;
+            esac
+        done
+        echo "  sudo dnf install -y ${dnf_list[*]}" >&2
+    elif command -v apt >/dev/null 2>&1; then
+        echo "  sudo apt install -y ${missing[*]}" >&2
     else
-        echo "  apt install -y ${missing[*]}" >&2
+        echo "  install with your package manager: ${missing[*]}" >&2
     fi
     exit 1
 fi