Add theme screenshot and clarify W3 Total Cache lazy loading

configuration

README.md

@@ -2,6 +2,8 @@
 
 A clean, retro-tech inspired **classic WordPress theme** for [commander1024.de](https://www.commander1024.de/). It uses standard PHP templates rather than Full Site Editing templates, while providing a modern Gutenberg authoring experience through `theme.json` and matching editor styles.
 
+![Commander1024 2026 theme screenshot](screenshot.png)
+
 The theme is intended for a traditional personal blog with articles, static pages, category/tag archives, search, comments, and media-rich technical content.
 
 ## Scope
@@ -43,10 +45,15 @@ It is designed to work with WordPress’s normal post/page workflow and with the
 - Readable, narrower measure for article body text
 - Category/tag chips and archive support
 - Responsive images, galleries, captions, embeds, and code blocks
-- W3 Total Cache JavaScript-only image lazy loading is disabled through its public filter so images remain available without JavaScript
 - Threaded comments with avatars, readable metadata, and non-numbered reply hierarchy
 - Previous/next post navigation with directional markers
 
+### W3 Total Cache no-JavaScript image compatibility
+
+W3 Total Cache’s optional Lazy Load feature replaces every image `src` with an SVG placeholder and relies on JavaScript to restore the real source. This prevents image delivery for visitors with JavaScript disabled.
+
+The theme uses W3 Total Cache’s public `w3tc_lazyload_can_process` filter to disable only that JavaScript-only output mutation. W3 Total Cache’s page cache, browser cache, minification, CDN, and other features remain unaffected. WordPress/browser-native `loading="lazy"` behavior can still be used because it retains a real image `src` and does not require JavaScript.
+
 ### Front page
 
 Configure the hero from **Appearance → Customize → Home page video hero**: