Refactor combatant row: single-click rename, book icon for stat blocks

Replace 250ms click timer and double-click detection with immediate
single-click rename for all combatant types. Add a BookOpen icon before
the name on bestiary rows as the dedicated stat block trigger. Remove
auto-show stat block on turn advance. Update specs to match: consistent
collapse/expand terminology, book icon requirements, no row-click stat
block behavior.

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

apps/web/src/components/stat-block-panel.tsx

@@ -352,7 +352,7 @@ export function StatBlockPanel({
 		);
 	}
 
-	if (panelRole === "pinned") return null;
+	if (panelRole === "pinned" || isCollapsed) return null;
 
 	return <MobileDrawer onDismiss={onDismiss}>{renderContent()}</MobileDrawer>;
 }