Localise timeline and movement chart captions in English and Russian.

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

client/src/components/MovementTree.tsx

@@ -1,4 +1,5 @@
 import { useCallback, useEffect, useLayoutEffect, useMemo, useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import type { ArtMovement } from '../types';
 import {
   branchOriginYear,
@@ -179,6 +180,7 @@ export default function MovementTree({
   onViewChange,
   onMovementClick,
 }: Props) {
+  const { t } = useTranslation('home');
   const canvasRef = useRef<HTMLDivElement>(null);
   const [canvas, setCanvas] = useState({ w: 900, h: 600 });
   const [panning, setPanning] = useState(false);
@@ -534,8 +536,7 @@ export default function MovementTree({
   return (
     <div className="mtree">
       <p className="mtree-caption">
-        Roots at the bottom, living movements at the crown · scroll to zoom · drag to
-        pan · click a branch to enter its gallery
+        {t('captionTreeFlow')}
       </p>
       <div
         ref={canvasRef}