Implement the 005-set-initiative feature that adds initiative values to combatants with automatic descending sort and active turn preservation

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

apps/web/src/hooks/use-encounter.ts

@@ -4,6 +4,7 @@ import {
 	advanceTurnUseCase,
 	editCombatantUseCase,
 	removeCombatantUseCase,
+	setInitiativeUseCase,
 } from "@initiative/application";
 import type { CombatantId, DomainEvent, Encounter } from "@initiative/domain";
 import {
@@ -92,6 +93,19 @@ export function useEncounter() {
 		[makeStore],
 	);
 
+	const setInitiative = useCallback(
+		(id: CombatantId, value: number | undefined) => {
+			const result = setInitiativeUseCase(makeStore(), id, value);
+
+			if (isDomainError(result)) {
+				return;
+			}
+
+			setEvents((prev) => [...prev, ...result]);
+		},
+		[makeStore],
+	);
+
 	return {
 		encounter,
 		events,
@@ -99,5 +113,6 @@ export function useEncounter() {
 		addCombatant,
 		removeCombatant,
 		editCombatant,
+		setInitiative,
 	} as const;
 }