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/App.tsx

@@ -195,24 +195,6 @@ export function App() {
 		});
 	}, []);
 
-	// Auto-show stat block for the active combatant when turn changes,
-	// but only when the viewport is wide enough to show it alongside the tracker.
-	// Only react to activeIndex changes — not combatant reordering (e.g. Roll All).
-	const prevActiveIndexRef = useRef(encounter.activeIndex);
-	useEffect(() => {
-		if (prevActiveIndexRef.current === encounter.activeIndex) return;
-		prevActiveIndexRef.current = encounter.activeIndex;
-		if (!globalThis.matchMedia("(min-width: 1024px)").matches) return;
-		const active = encounter.combatants[encounter.activeIndex];
-		if (!active?.creatureId || !isLoaded) return;
-		sidePanel.showCreature(active.creatureId);
-	}, [
-		encounter.activeIndex,
-		encounter.combatants,
-		isLoaded,
-		sidePanel.showCreature,
-	]);
-
 	return (
 		<div className="flex h-screen flex-col">
 			<div className="relative mx-auto flex min-h-0 w-full max-w-2xl flex-1 flex-col gap-3 px-4">