Add multi-workspace support to desktop app (#409)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

desktop/src/shared/api/relayClientSession.ts

@@ -30,19 +30,19 @@ export class RelayClient {
   private wsId: number | null = null;
   private relayUrl: string | null = null;
   private connectPromise: Promise<void> | null = null;
-  private reconnectTimeout: ReturnType<typeof setTimeout> | null = null;
+  private reconnectTimeout: number | null = null;
   private reconnectDelayMs = RECONNECT_BASE_DELAY_MS;
   private keepAliveRequested = false;
   private authRequest: {
     pendingEventId: string;
     resolve: () => void;
     reject: (error: Error) => void;
-    timeout: ReturnType<typeof setTimeout>;
+    timeout: number;
   } | null = null;
   private subscriptions = new Map<string, RelaySubscription>();
   private pendingEvents = new Map<string, PendingEvent>();
   private eventBuffer: Array<{ subId: string; event: RelayEvent }> = [];
-  private flushTimeout: ReturnType<typeof setTimeout> | null = null;
+  private flushTimeout: number | null = null;
   private reconnectListeners = new Set<() => void>();
   private hasConnectedOnce = false;
   private notifyReconnectListeners = false;

desktop/src/shared/api/relayClientShared.ts

@@ -12,7 +12,7 @@ type HistorySubscription = {
   events: RelayEvent[];
   resolve: (events: RelayEvent[]) => void;
   reject: (error: Error) => void;
-  timeout: ReturnType<typeof setTimeout>;
+  timeout: number;
 };
 
 type LiveSubscription = {
@@ -27,7 +27,7 @@ export type PendingEvent = {
   event: RelayEvent;
   resolve: (event: RelayEvent) => void;
   reject: (error: Error) => void;
-  timeout: ReturnType<typeof setTimeout>;
+  timeout: number;
 };
 
 export type RelaySubscription = HistorySubscription | LiveSubscription;

desktop/src/shared/api/tauri.ts

@@ -528,6 +528,10 @@ export async function setPresence(
   };
 }
 
+export function getDefaultRelayUrl(): Promise<string> {
+  return invokeTauri<string>("get_default_relay_url");
+}
+
 export function getRelayWsUrl(): Promise<string> {
   return invokeTauri<string>("get_relay_ws_url");
 }
@@ -1106,3 +1110,15 @@ export async function confirmPairingSas(): Promise<void> {
 export async function cancelPairing(): Promise<void> {
   await invokeTauri("cancel_pairing");
 }
+
+export async function applyWorkspace(
+  relayUrl: string,
+  nsec?: string,
+  token?: string,
+): Promise<void> {
+  await invokeTauri("apply_workspace", {
+    relayUrl,
+    nsec: nsec ?? null,
+    token: token ?? null,
+  });
+}