fix(build): skip LXC stack upgrade prompt in unattended mode

Honor PHS_SILENT=1 and DISABLE_UPDATE=yes by auto-ignoring the host
upgrade dialog, matching silent container update behavior.

misc/build.func

@@ -5722,6 +5722,11 @@ create_lxc_container() {
       return 0
     fi
 
+    if [[ "${PHS_SILENT:-0}" == "1" || "${DISABLE_UPDATE,,}" == "yes" ]]; then
+      msg_info "Skipping host LXC stack upgrade prompt (unattended mode)"
+      return 2
+    fi
+
     msg_warn "An update for the Proxmox LXC stack is available"
     echo "  pve-container: installed=${_pvec_i:-n/a}  candidate=${_pvec_c:-n/a}"
     echo "  lxc-pve     : installed=${_lxcp_i:-n/a}  candidate=${_lxcp_c:-n/a}"

misc/tools.func

@@ -8452,34 +8452,29 @@ setup_ruby() {
   fi
 
   # Install ruby-build plugin
-  _install_ruby_build_plugin() {
+  if [[ ! -d "$RBENV_DIR/plugins/ruby-build" ]]; then
     local RUBY_BUILD_RELEASE
     RUBY_BUILD_RELEASE=$(get_latest_github_release "rbenv/ruby-build") || {
       msg_error "Failed to fetch latest ruby-build version from GitHub"
+      rm -rf "$TMP_DIR"
       return 7
     }
 
     if ! curl_with_retry "https://github.com/rbenv/ruby-build/archive/refs/tags/v${RUBY_BUILD_RELEASE}.tar.gz" "$TMP_DIR/ruby-build.tar.gz"; then
       msg_error "Failed to download ruby-build"
       msg_error "Hint: Check connectivity to github.com/rbenv/ruby-build"
+      rm -rf "$TMP_DIR"
       return 7
     fi
 
     tar -xzf "$TMP_DIR/ruby-build.tar.gz" -C "$TMP_DIR" || {
       msg_error "Failed to extract ruby-build"
+      rm -rf "$TMP_DIR"
       return 251
     }
 
     mkdir -p "$RBENV_DIR/plugins/ruby-build"
     cp -r "$TMP_DIR/ruby-build-${RUBY_BUILD_RELEASE}/." "$RBENV_DIR/plugins/ruby-build/"
-    return 0
-  }
-
-  if [[ ! -d "$RBENV_DIR/plugins/ruby-build" ]]; then
-    _install_ruby_build_plugin || {
-      rm -rf "$TMP_DIR"
-      return 7
-    }
   fi
 
   # Setup PATH and install Ruby version
@@ -8487,14 +8482,6 @@ setup_ruby() {
   eval "$("$RBENV_BIN" init - bash)" 2>/dev/null || true
 
   if ! "$RBENV_BIN" versions --bare 2>/dev/null | grep -qx "$RUBY_VERSION"; then
-    if [[ ! -f "$RBENV_DIR/plugins/ruby-build/share/ruby-build/$RUBY_VERSION" ]]; then
-      msg_info "Updating ruby-build definitions"
-      _install_ruby_build_plugin || {
-        rm -rf "$TMP_DIR"
-        return 7
-      }
-      msg_ok "Updated ruby-build definitions"
-    fi
     $STD "$RBENV_BIN" install "$RUBY_VERSION" || {
       msg_error "Failed to install Ruby $RUBY_VERSION"
       rm -rf "$TMP_DIR"