Migrate to native Node.js file access and improve UI

packages/web/src/utils/localStorage.ts

@@ -0,0 +1,26 @@
+export const enum Key {
+  LAST_VAULT_PATH = "lastVaultPath",
+}
+
+interface StoredData {
+  [Key.LAST_VAULT_PATH]: string
+}
+
+export function get<K extends keyof StoredData>(key: K) {
+  try {
+    const value = localStorage.getItem(key)
+    return value == null ? undefined : (JSON.parse(value!) as StoredData[K])
+  } catch {}
+}
+
+export function set<K extends keyof StoredData>(key: K, value: StoredData[K]) {
+  try {
+    localStorage.setItem(key, JSON.stringify(value))
+  } catch {}
+}
+
+export function remove(key: keyof StoredData) {
+  try {
+    localStorage.removeItem(key)
+  } catch {}
+}