Refactor App.tsx from god component to context-based architecture

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/web/src/contexts/bestiary-context.tsx

@@ -0,0 +1,23 @@
+import { createContext, type ReactNode, useContext } from "react";
+import { useBestiary } from "../hooks/use-bestiary.js";
+
+export type { SearchResult } from "../hooks/use-bestiary.js";
+
+type BestiaryContextValue = ReturnType<typeof useBestiary>;
+
+const BestiaryContext = createContext<BestiaryContextValue | null>(null);
+
+export function BestiaryProvider({ children }: { children: ReactNode }) {
+	const value = useBestiary();
+	return (
+		<BestiaryContext.Provider value={value}>
+			{children}
+		</BestiaryContext.Provider>
+	);
+}
+
+export function useBestiaryContext(): BestiaryContextValue {
+	const ctx = useContext(BestiaryContext);
+	if (!ctx) throw new Error("useBestiaryContext requires BestiaryProvider");
+	return ctx;
+}