Keep draw pen settings inside DrawCanvas

Only the Reader's canvas uses them now. A module-level lastPen keeps the
chosen tool/color/size when Draw mode is toggled off and on.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/App.jsx

@@ -147,9 +147,6 @@ const App = () => {
     const saved = localStorage.getItem('studyLayout');
     return saved === 'stacked' ? 'stacked' : 'split'; // 'annotate' (Draw) was removed
   }); // 'stacked' | 'split'
-  const [drawTool, setDrawTool] = useState('pen');
-  const [drawColor, setDrawColor] = useState('#0f172a');
-  const [drawSize, setDrawSize] = useState(0.003);
   const [activeStudyTab, setActiveStudyTab] = useState(
     () => localStorage.getItem('activeStudyTab') || 'notes',
   );
@@ -1676,9 +1673,6 @@ const App = () => {
     selectedChunkVerses,
     selectedChunkGlobalIndex,
     studyLayout, setStudyLayout,
-    drawTool, setDrawTool,
-    drawColor, setDrawColor,
-    drawSize, setDrawSize,
     activeStudyTab, setActiveStudyTab,
     mobileStudyTab, setMobileStudyTab,
     collapsedSections, setCollapsedSections,