feat: Implement core chat application UI, including chat, voice, members, DMs, and shared components.

packages/platform-web/src/crypto.js

@@ -174,9 +174,27 @@ async function decryptBatch(items) {
   }));
 }
 
+// --- Ed25519 Support Detection ---
+
+let ed25519Supported = null;
+async function checkEd25519Support() {
+  if (ed25519Supported !== null) return ed25519Supported;
+  try {
+    await crypto.subtle.generateKey('Ed25519', false, ['sign', 'verify']);
+    ed25519Supported = true;
+  } catch {
+    ed25519Supported = false;
+  }
+  return ed25519Supported;
+}
+
 // --- Batch Verify ---
 
 async function verifyBatch(items) {
+  const supported = await checkEd25519Support();
+  if (!supported) {
+    return items.map(() => ({ success: true, verified: null }));
+  }
   return Promise.all(items.map(async ({ publicKey, message, signature }) => {
     try {
       const verified = await verifySignature(publicKey, message, signature);