diff --git a/.vscode/settings.json b/.vscode/settings.json
index a6946aa..68571ef 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -9,6 +9,13 @@
     "./_dokuwiki/vendor"
   ],
 
+  // DokuWiki replaces @ini_* placeholders server-side.
+  // VS Code's CSS validator doesn't understand those tokens, but LESS does.
+  "files.associations": {
+    "style.css": "less",
+    "temp-input-colors.css": "less"
+  },
+
   // Keep the file explorer tidy when the optional DokuWiki checkout exists.
   "files.exclude": {
     "**/_dokuwiki/.git": true,
diff --git a/README.md b/README.md
index 130bf0c..e5c5715 100644
--- a/README.md
+++ b/README.md
@@ -167,6 +167,18 @@ the template provides proper form control styles.
 
 Temporary file: [temp-input-colors.css](temp-input-colors.css)
 
+Developer note: DokuWiki serves a combined stylesheet via `lib/exe/css.php` and caches it.
+Cache invalidation is based on the mtimes of the source CSS/LESS files.
+If you deploy into a mounted/remote filesystem with a different clock, preserving mtimes can prevent
+automatic invalidation (making it look like your CSS changes don't load until you purge cache).
+
+`deploy.sh` avoids preserving mtimes by default to make CSS iteration smoother. If you explicitly want
+to preserve mtimes, use:
+
+```bash
+./deploy.sh --preserve-times
+```
+
 
 ## Features and usage
 
diff --git a/action.php b/action.php
index 41cd1e7..055a4fa 100644
--- a/action.php
+++ b/action.php
@@ -41,7 +41,8 @@ class action_plugin_luxtools extends ActionPlugin
      */
     public function addScripts(Event $event, $param)
     {
-        $base = DOKU_BASE . "lib/plugins/luxtools/js/";
+        $plugin = $this->getPluginName();
+        $base = DOKU_BASE . "lib/plugins/$plugin/js/";
         $scripts = [
             "lightbox.js",
             "gallery-thumbnails.js",
@@ -75,7 +76,8 @@ class action_plugin_luxtools extends ActionPlugin
             return;
         }
 
-        $event->data['files'][DOKU_PLUGIN . 'luxtools/temp-input-colors.css'] = DOKU_BASE . 'lib/plugins/luxtools/';
+        $plugin = $this->getPluginName();
+        $event->data['files'][DOKU_PLUGIN . $plugin . '/temp-input-colors.css'] = DOKU_BASE . 'lib/plugins/' . $plugin . '/';
     }
 
     /**
diff --git a/deploy.sh b/deploy.sh
index 56461b7..e180d3f 100755
--- a/deploy.sh
+++ b/deploy.sh
@@ -9,10 +9,12 @@ set -euo pipefail
 #   ./deploy.sh --dry-run       # show what would change
 #   ./deploy.sh /path/to/luxtools
 #   ./deploy.sh --no-delete     # don't delete extraneous files at target
+#   ./deploy.sh --preserve-times  # keep source mtimes at target
 
 TARGET="/thebe/Web/lib/plugins/luxtools"
 DRY_RUN=0
 DELETE=1
+PRESERVE_TIMES=0
 
 while (($#)); do
   case "$1" in
@@ -24,6 +26,10 @@ while (($#)); do
       DELETE=0
       shift
       ;;
+    --preserve-times)
+      PRESERVE_TIMES=1
+      shift
+      ;;
     -h|--help)
       sed -n '1,80p' "$0"
       exit 0
@@ -79,6 +85,13 @@ RSYNC_ARGS=(
   --exclude=.DS_Store
 )
 
+# DokuWiki's combined CSS (lib/exe/css.php) is cached and invalidated based on source file mtimes.
+# When deploying to a mounted/remote filesystem with a different clock, preserving mtimes can make
+# DokuWiki think the cache is always newer than your plugin CSS. Avoid that by default.
+if (( ! PRESERVE_TIMES )); then
+  RSYNC_ARGS+=(--no-times --omit-dir-times)
+fi
+
 if ((DRY_RUN)); then
   RSYNC_ARGS+=(--dry-run)
 fi