feat: Add new emoji assets and an UpdateBanner component.

packages/platform-web/src/session.js

@@ -0,0 +1,34 @@
+/**
+ * Web platform session persistence using localStorage.
+ * Returns Promises to match the Electron IPC-based API contract.
+ */
+const SESSION_KEY = 'discord-clone-session';
+
+export default {
+  save(data) {
+    try {
+      localStorage.setItem(SESSION_KEY, JSON.stringify(data));
+      return Promise.resolve(true);
+    } catch {
+      return Promise.resolve(false);
+    }
+  },
+
+  load() {
+    try {
+      const raw = localStorage.getItem(SESSION_KEY);
+      return Promise.resolve(raw ? JSON.parse(raw) : null);
+    } catch {
+      return Promise.resolve(null);
+    }
+  },
+
+  clear() {
+    try {
+      localStorage.removeItem(SESSION_KEY);
+      return Promise.resolve(true);
+    } catch {
+      return Promise.resolve(false);
+    }
+  },
+};