Implement the 029-on-demand-bestiary feature that replaces the bundled XMM bestiary JSON with a compact search index (~350KB) and on-demand source loading, where users explicitly provide a URL or upload a JSON file to fetch full stat block data per source, which is then normalized and cached in IndexedDB (with in-memory fallback) so creature stat blocks load instantly on subsequent visits while keeping the app bundle small and never auto-fetching copyrighted content

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

packages/application/src/index.ts

@@ -3,7 +3,7 @@ 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 { editCombatantUseCase } from "./edit-combatant-use-case.js";
-export type { EncounterStore } from "./ports.js";
+export type { BestiarySourceCache, EncounterStore } 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

@@ -1,6 +1,11 @@
-import type { Encounter } from "@initiative/domain";
+import type { Creature, CreatureId, Encounter } from "@initiative/domain";
 
 export interface EncounterStore {
 	get(): Encounter;
 	save(encounter: Encounter): void;
 }
+
+export interface BestiarySourceCache {
+	getCreature(creatureId: CreatureId): Creature | undefined;
+	isSourceCached(sourceCode: string): boolean;
+}

packages/domain/src/creature-types.ts

@@ -75,6 +75,23 @@ export interface Creature {
 	readonly spellcasting?: readonly SpellcastingBlock[];
 }
 
+export interface BestiaryIndexEntry {
+	readonly name: string;
+	readonly source: string;
+	readonly ac: number;
+	readonly hp: number;
+	readonly dex: number;
+	readonly cr: string;
+	readonly initiativeProficiency: number;
+	readonly size: string;
+	readonly type: string;
+}
+
+export interface BestiaryIndex {
+	readonly sources: Readonly<Record<string, string>>;
+	readonly creatures: readonly BestiaryIndexEntry[];
+}
+
 /** Maps a CR string to the corresponding proficiency bonus. */
 export function proficiencyBonus(cr: string): number {
 	const numericCr = cr.includes("/")

packages/domain/src/index.ts

@@ -13,6 +13,8 @@ export {
 	VALID_CONDITION_IDS,
 } from "./conditions.js";
 export {
+	type BestiaryIndex,
+	type BestiaryIndexEntry,
 	type BestiarySource,
 	type Creature,
 	type CreatureId,