Add player character management feature

Persistent player character templates (name, AC, HP, color, icon) with
full CRUD, bestiary-style search to add PCs to encounters with pre-filled
stats, and color/icon visual distinction in combatant rows. Also stops
the stat block panel from auto-opening when adding a creature.

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

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

@@ -19,6 +19,7 @@ import type {
 	ConditionId,
 	DomainEvent,
 	Encounter,
+	PlayerCharacter,
 } from "@initiative/domain";
 import {
 	combatantId,
@@ -318,6 +319,58 @@ export function useEncounter() {
 		[makeStore, editCombatant],
 	);
 
+	const addFromPlayerCharacter = useCallback(
+		(pc: PlayerCharacter) => {
+			const store = makeStore();
+			const existingNames = store.get().combatants.map((c) => c.name);
+			const { newName, renames } = resolveCreatureName(pc.name, existingNames);
+
+			for (const { from, to } of renames) {
+				const target = store.get().combatants.find((c) => c.name === from);
+				if (target) {
+					editCombatantUseCase(makeStore(), target.id, to);
+				}
+			}
+
+			const id = combatantId(`c-${++nextId.current}`);
+			const addResult = addCombatantUseCase(makeStore(), id, newName);
+			if (isDomainError(addResult)) return;
+
+			// Set HP
+			const hpResult = setHpUseCase(makeStore(), id, pc.maxHp);
+			if (!isDomainError(hpResult)) {
+				setEvents((prev) => [...prev, ...hpResult]);
+			}
+
+			// Set AC
+			if (pc.ac > 0) {
+				const acResult = setAcUseCase(makeStore(), id, pc.ac);
+				if (!isDomainError(acResult)) {
+					setEvents((prev) => [...prev, ...acResult]);
+				}
+			}
+
+			// Set color, icon, and playerCharacterId on the combatant
+			const currentEncounter = store.get();
+			store.save({
+				...currentEncounter,
+				combatants: currentEncounter.combatants.map((c) =>
+					c.id === id
+						? {
+								...c,
+								color: pc.color,
+								icon: pc.icon,
+								playerCharacterId: pc.id,
+							}
+						: c,
+				),
+			});
+
+			setEvents((prev) => [...prev, ...addResult]);
+		},
+		[makeStore, editCombatant],
+	);
+
 	return {
 		encounter,
 		events,
@@ -334,6 +387,7 @@ export function useEncounter() {
 		toggleCondition,
 		toggleConcentration,
 		addFromBestiary,
+		addFromPlayerCharacter,
 		makeStore,
 	} as const;
 }