Switch side panel to stat block when advancing turns

Previously the import/sources view would stay open when navigating to
the next combatant. Now advancing turns clears those modes so the active
creature's stat block is shown.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/src/App.tsx

@@ -259,6 +259,8 @@ export function App() {
 		const active = encounter.combatants[encounter.activeIndex];
 		if (!active?.creatureId || !isLoaded) return;
 		setSelectedCreatureId(active.creatureId as CreatureId);
+		setBulkImportMode(false);
+		setSourceManagerMode(false);
 	}, [encounter.activeIndex, encounter.combatants, isLoaded]);
 
 	const isEmpty = encounter.combatants.length === 0;