feat: persist draft messages and UI refinements

- Add dedicated draft-store with AsyncStorage persistence for drafts
  that survive app refresh/crash
- Reduce markdown bold weight from bold to medium (500)
- Various theme and component style updates
- Server bootstrap and config improvements

🤖 Generated with [Claude Code](https://claude.com/claude-code)

packages/relay/src/index.ts

@@ -0,0 +1,24 @@
+export { Relay } from "./relay.js";
+export type {
+  ConnectionRole,
+  RelayConnection,
+  RelayEvents,
+  RelaySession,
+  RelaySessionAttachment,
+} from "./types.js";
+
+export {
+  generateKeyPair,
+  exportPublicKey,
+  importPublicKey,
+  deriveSharedKey,
+  encrypt,
+  decrypt,
+} from "./crypto.js";
+
+export {
+  createClientChannel,
+  createDaemonChannel,
+  EncryptedChannel,
+} from "./encrypted-channel.js";
+export type { Transport, EncryptedChannelEvents } from "./encrypted-channel.js";