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/domain/src/events.ts

@@ -1,4 +1,5 @@
 import type { ConditionId } from "./conditions.js";
+import type { PlayerCharacterId } from "./player-character-types.js";
 import type { CombatantId } from "./types.js";
 
 export interface TurnAdvanced {
@@ -103,6 +104,25 @@ export interface EncounterCleared {
 	readonly combatantCount: number;
 }
 
+export interface PlayerCharacterCreated {
+	readonly type: "PlayerCharacterCreated";
+	readonly playerCharacterId: PlayerCharacterId;
+	readonly name: string;
+}
+
+export interface PlayerCharacterUpdated {
+	readonly type: "PlayerCharacterUpdated";
+	readonly playerCharacterId: PlayerCharacterId;
+	readonly oldName: string;
+	readonly newName: string;
+}
+
+export interface PlayerCharacterDeleted {
+	readonly type: "PlayerCharacterDeleted";
+	readonly playerCharacterId: PlayerCharacterId;
+	readonly name: string;
+}
+
 export type DomainEvent =
 	| TurnAdvanced
 	| RoundAdvanced
@@ -119,4 +139,7 @@ export type DomainEvent =
 	| ConditionRemoved
 	| ConcentrationStarted
 	| ConcentrationEnded
-	| EncounterCleared;
+	| EncounterCleared
+	| PlayerCharacterCreated
+	| PlayerCharacterUpdated
+	| PlayerCharacterDeleted;