Localise timeline and movement chart captions in English and Russian.

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

client/src/components/VerticalMovementBands.tsx

@@ -1,4 +1,5 @@
 import { useMemo, useRef, useCallback, useEffect, useLayoutEffect, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import type { ArtMovement } from '../types';
 import { MOVEMENT_LINEAGE } from '../data/movement-lineage';
 import { panTimelineView, zoomTimelineView } from '../utils/timelineView';
@@ -364,6 +365,7 @@ export default function VerticalMovementBands({
   onViewChange,
   onMovementClick,
 }: Props) {
+  const { t } = useTranslation('home');
   const canvasRef = useRef<HTMLDivElement>(null);
   const [canvasSize, setCanvasSize] = useState({ w: 800, h: 600 });
   const [panning, setPanning] = useState(false);
@@ -631,7 +633,7 @@ export default function VerticalMovementBands({
   return (
     <div className="vflow">
       <p className="vflow-caption">
-        Bottom → top through history · scroll to zoom · drag to pan · click a stream
+        {t('captionVerticalFlow')}
       </p>
       <div
         ref={canvasRef}