refactor: Remove ValidationQuestionnaire and DimensionConnections from Law10Tab

- Removed ValidationQuestionnaire section (manual input form)
- Removed DimensionConnections section (links to other tabs)
- Removed unused imports (FileText, TrendingUp)
- Removed onTabChange prop from Law10Tab component
- Updated DashboardTabs.tsx to not pass onTabChange to Law10Tab

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/components/DashboardTabs.tsx

@@ -36,7 +36,7 @@ export function DashboardTabs({
       case 'roadmap':
         return <RoadmapTab data={data} />;
       case 'law10':
-        return <Law10Tab data={data} onTabChange={setActiveTab} />;
+        return <Law10Tab data={data} />;
       default:
         return <ExecutiveSummaryTab data={data} />;
     }