feat: initial project scaffold with Watch companion app

src/providers/WatchProvider.tsx

@@ -0,0 +1,36 @@
+import { createContext, useContext, useEffect, useState, type ReactNode } from "react";
+import { MMKV } from "react-native-mmkv";
+
+const storage = new MMKV();
+
+type SettingsContextType = {
+  poolLength: number;
+  setPoolLength: (length: number) => void;
+};
+
+const SettingsContext = createContext<SettingsContextType>({
+  poolLength: 25,
+  setPoolLength: () => {},
+});
+
+export function useSettings() {
+  return useContext(SettingsContext);
+}
+
+export function SettingsProvider({ children }: { children: ReactNode }) {
+  const [poolLength, setPoolLengthState] = useState<number>(() => {
+    const stored = storage.getNumber("poolLength");
+    return stored ?? 25;
+  });
+
+  const setPoolLength = (length: number) => {
+    setPoolLengthState(length);
+    storage.set("poolLength", length);
+  };
+
+  return (
+    <SettingsContext.Provider value={{ poolLength, setPoolLength }}>
+      {children}
+    </SettingsContext.Provider>
+  );
+}