Update README screenshots

Replaces the August 2025 screenshot (predated most of the recent UI
work) with current dashboard and lesson-view shots, built against a
synthetic sample library rather than the real deployment's course
names.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

CHANGELOG.md

@@ -1,3 +1,4 @@
+2026-08-26 15:27 UTC — Update README screenshots
 2026-08-26 14:57 UTC — Add progress/recently-added sort to Library browser
 2026-08-26 14:45 UTC — Redesign expandable lists to a leaner, flat style
 2026-08-26 14:27 UTC — Add expand all/collapse all to the course tree

README.md

@@ -8,9 +8,10 @@ file browser.
 This is a personal deployment, not a public project — this doc is internal
 reference for running/maintaining it, not a pitch.
 
-![Lesson view](images/lesson-0-8-2025-08-04-04_58_17.png)
-*Screenshot predates the current theming/icon work — kept for a rough idea
-of layout, not pixel-accurate.*
+![Dashboard](images/dashboard-2026-08.png)
+![Lesson view](images/lesson-2026-08.png)
+*Screenshots use a synthetic sample library, not the real deployment's
+content. Default dark theme shown — 45 others are available in Settings.*
 
 ---
 

VERSION

@@ -1 +1 @@
-2026-08-26 14:57 UTC — add progress/recently-added sort to Library browser
+2026-08-26 15:27 UTC — update README screenshots