Add cache inclalidation for Chronological

README.md

@@ -285,6 +285,8 @@ Notes:
 - Header month/year links target `chronological:YYYY:MM` and `chronological:YYYY`.
 - Prev/next month buttons update the widget in-place without a full page reload.
 - Month switches fetch server-rendered widget HTML via AJAX and replace only the widget node.
+- Calendar output is marked as non-cacheable to keep missing/existing link styling and
+  current-day highlighting up to date.
 
 ### 0.4) Virtual chronological day pages
 
@@ -300,6 +302,18 @@ The virtual page includes:
 
 The page is only created once you edit and save actual content.
 
+### 0.5) Cache invalidation
+
+luxtools provides an admin-only **Invalidate Cache** action in the page tools menu.
+
+- Purges the **entire** DokuWiki cache directory (`data/cache/*`).
+- This covers rendered pages, parsed instructions, CSS/JS bundles, and all
+  luxtools-specific caches (thumbnails, pagelink mapping).
+- Useful after deploying plugin or template changes (replaces the old
+  `touch conf/local.php` step in `deploy.sh` which often failed due to
+  permission errors).
+- Also useful when actively adding external photos to the current day page.
+
 ### 1) List files by glob pattern
 
 The `{{directory>...}}` syntax (or `{{files>...}}` for backwards compatibility) can handle both directory listings and glob patterns. When a glob pattern is used, it renders as a table: