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>

packages/application/src/create-player-character-use-case.ts

@@ -0,0 +1,36 @@
+import {
+	createPlayerCharacter,
+	type DomainError,
+	type DomainEvent,
+	isDomainError,
+	type PlayerCharacterId,
+} from "@initiative/domain";
+import type { PlayerCharacterStore } from "./ports.js";
+
+export function createPlayerCharacterUseCase(
+	store: PlayerCharacterStore,
+	id: PlayerCharacterId,
+	name: string,
+	ac: number,
+	maxHp: number,
+	color: string,
+	icon: string,
+): DomainEvent[] | DomainError {
+	const characters = store.getAll();
+	const result = createPlayerCharacter(
+		characters,
+		id,
+		name,
+		ac,
+		maxHp,
+		color,
+		icon,
+	);
+
+	if (isDomainError(result)) {
+		return result;
+	}
+
+	store.save([...result.characters]);
+	return result.events;
+}

packages/application/src/delete-player-character-use-case.ts

@@ -0,0 +1,23 @@
+import {
+	type DomainError,
+	type DomainEvent,
+	deletePlayerCharacter,
+	isDomainError,
+	type PlayerCharacterId,
+} from "@initiative/domain";
+import type { PlayerCharacterStore } from "./ports.js";
+
+export function deletePlayerCharacterUseCase(
+	store: PlayerCharacterStore,
+	id: PlayerCharacterId,
+): DomainEvent[] | DomainError {
+	const characters = store.getAll();
+	const result = deletePlayerCharacter(characters, id);
+
+	if (isDomainError(result)) {
+		return result;
+	}
+
+	store.save([...result.characters]);
+	return result.events;
+}

packages/application/src/edit-player-character-use-case.ts

@@ -0,0 +1,32 @@
+import {
+	type DomainError,
+	type DomainEvent,
+	editPlayerCharacter,
+	isDomainError,
+	type PlayerCharacterId,
+} from "@initiative/domain";
+import type { PlayerCharacterStore } from "./ports.js";
+
+interface EditFields {
+	readonly name?: string;
+	readonly ac?: number;
+	readonly maxHp?: number;
+	readonly color?: string;
+	readonly icon?: string;
+}
+
+export function editPlayerCharacterUseCase(
+	store: PlayerCharacterStore,
+	id: PlayerCharacterId,
+	fields: EditFields,
+): DomainEvent[] | DomainError {
+	const characters = store.getAll();
+	const result = editPlayerCharacter(characters, id, fields);
+
+	if (isDomainError(result)) {
+		return result;
+	}
+
+	store.save([...result.characters]);
+	return result.events;
+}

packages/application/src/index.ts

@@ -2,8 +2,15 @@ export { addCombatantUseCase } from "./add-combatant-use-case.js";
 export { adjustHpUseCase } from "./adjust-hp-use-case.js";
 export { advanceTurnUseCase } from "./advance-turn-use-case.js";
 export { clearEncounterUseCase } from "./clear-encounter-use-case.js";
+export { createPlayerCharacterUseCase } from "./create-player-character-use-case.js";
+export { deletePlayerCharacterUseCase } from "./delete-player-character-use-case.js";
 export { editCombatantUseCase } from "./edit-combatant-use-case.js";
-export type { BestiarySourceCache, EncounterStore } from "./ports.js";
+export { editPlayerCharacterUseCase } from "./edit-player-character-use-case.js";
+export type {
+	BestiarySourceCache,
+	EncounterStore,
+	PlayerCharacterStore,
+} from "./ports.js";
 export { removeCombatantUseCase } from "./remove-combatant-use-case.js";
 export { retreatTurnUseCase } from "./retreat-turn-use-case.js";
 export { rollAllInitiativeUseCase } from "./roll-all-initiative-use-case.js";

packages/application/src/ports.ts

@@ -1,4 +1,9 @@
-import type { Creature, CreatureId, Encounter } from "@initiative/domain";
+import type {
+	Creature,
+	CreatureId,
+	Encounter,
+	PlayerCharacter,
+} from "@initiative/domain";
 
 export interface EncounterStore {
 	get(): Encounter;
@@ -9,3 +14,8 @@ export interface BestiarySourceCache {
 	getCreature(creatureId: CreatureId): Creature | undefined;
 	isSourceCached(sourceCode: string): boolean;
 }
+
+export interface PlayerCharacterStore {
+	getAll(): PlayerCharacter[];
+	save(characters: PlayerCharacter[]): void;
+}