Document Tree of Art layouts, colour helpers, deep-links, and caption i18n.

Co-authored-by: Cursor <cursoragent@cursor.com>

Documentation/i18n-russian.md

@@ -25,6 +25,16 @@ Timeline header: **EN | RU** toggle (`LocaleSwitcher`).
 - Passes `?locale=ru` on catalog API requests
 - Refetches bootstrap catalog when locale changes
 
+Timeline **layout** chrome and chart hints are also localised in `home.json`:
+
+| Key | Where |
+|-----|--------|
+| `layoutHorizontal` / `layoutVertical` / `layoutTree` | Header layout switch |
+| `captionClassicTimeline` / `captionClassicFlow` | Classic era bar + movement streams |
+| `captionVerticalTimeline` / `captionVerticalFlow` | Vertical rail + streams |
+| `captionTreeFlow` | Tree of Art chart |
+
+Shareable layout URLs (`?layout=tree` etc.) are language-independent; captions follow the active locale.
 ---
 
 ## Setup (dev)