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>

apps/web/src/components/turn-navigation.tsx

@@ -1,5 +1,5 @@
 import type { Encounter } from "@initiative/domain";
-import { StepBack, StepForward, Trash2 } from "lucide-react";
+import { Settings, StepBack, StepForward, Trash2 } from "lucide-react";
 import { D20Icon } from "./d20-icon";
 import { Button } from "./ui/button";
 
@@ -9,6 +9,7 @@ interface TurnNavigationProps {
 	onRetreatTurn: () => void;
 	onClearEncounter: () => void;
 	onRollAllInitiative: () => void;
+	onOpenSourceManager: () => void;
 }
 
 export function TurnNavigation({
@@ -17,6 +18,7 @@ export function TurnNavigation({
 	onRetreatTurn,
 	onClearEncounter,
 	onRollAllInitiative,
+	onOpenSourceManager,
 }: TurnNavigationProps) {
 	const hasCombatants = encounter.combatants.length > 0;
 	const isAtStart = encounter.roundNumber === 1 && encounter.activeIndex === 0;
@@ -62,6 +64,16 @@ export function TurnNavigation({
 					>
 						<D20Icon className="h-6 w-6" />
 					</Button>
+					<Button
+						variant="ghost"
+						size="icon"
+						className="h-8 w-8 text-muted-foreground hover:text-hover-neutral"
+						onClick={onOpenSourceManager}
+						title="Manage cached sources"
+						aria-label="Manage cached sources"
+					>
+						<Settings className="h-5 w-5" />
+					</Button>
 					<Button
 						variant="ghost"
 						size="icon"