nostr publish event fix

lib/data/nostr/nostr_service.dart

@@ -238,7 +238,7 @@ class NostrService {
     }
   }
 
-  /// Publishes an event to all connected relays.
+  /// Publishes an event to all enabled relays.
   /// 
   /// [event] - The Nostr event to publish.
   /// 
@@ -247,14 +247,36 @@ class NostrService {
     final results = <String, bool>{};
 
     for (final relay in _relays) {
-      if (relay.isConnected) {
+      // Only publish to enabled relays
+      if (!relay.isEnabled) {
+        results[relay.url] = false;
+        continue;
+      }
+
+      // Try to connect if not already connected
+      if (!relay.isConnected) {
         try {
-          await publishEvent(event, relay.url);
-          results[relay.url] = true;
+          final stream = await connectRelay(relay.url).timeout(
+            const Duration(seconds: 3),
+            onTimeout: () {
+              throw Exception('Connection timeout');
+            },
+          );
+          // Start listening to establish connection, then cancel immediately
+          final subscription = stream.listen(null);
+          await Future.delayed(const Duration(milliseconds: 100));
+          subscription.cancel();
         } catch (e) {
           results[relay.url] = false;
+          continue;
         }
-      } else {
+      }
+
+      // Publish to the relay
+      try {
+        await publishEvent(event, relay.url);
+        results[relay.url] = true;
+      } catch (e) {
         results[relay.url] = false;
       }
     }