nostr login fetch details and nip05

lib/data/session/session_service.dart

@@ -196,6 +196,9 @@ class SessionService {
       // Set as current user
       _currentUser = user;
 
+      // Load preferred relays from NIP-05 if available
+      await _loadPreferredRelaysIfAvailable();
+
       return user;
     } catch (e) {
       throw SessionException('Failed to login with Nostr: $e');
@@ -360,5 +363,46 @@ class SessionService {
     if (_currentUser == null) return null;
     return _userCacheDirs[_currentUser!.id];
   }
+
+  /// Loads preferred relays from NIP-05 if the current user has an active nip05.
+  /// 
+  /// This method checks if the logged-in user has a nip05 identifier and,
+  /// if so, fetches preferred relays from the NIP-05 verification endpoint
+  /// and adds them to the Nostr service relay list.
+  /// 
+  /// This is called automatically after Nostr login, but can also be called
+  /// manually to refresh preferred relays.
+  Future<void> loadPreferredRelaysIfAvailable() async {
+    await _loadPreferredRelaysIfAvailable();
+  }
+
+  /// Internal method to load preferred relays from NIP-05 if available.
+  Future<void> _loadPreferredRelaysIfAvailable() async {
+    if (_currentUser == null || _nostrService == null) {
+      return;
+    }
+
+    final profile = _currentUser!.nostrProfile;
+    if (profile == null || profile.nip05 == null || profile.nip05!.isEmpty) {
+      return;
+    }
+
+    try {
+      final nip05 = profile.nip05!;
+      final publicKey = _currentUser!.id; // User ID is the public key for Nostr users
+
+      final addedCount = await _nostrService!.loadPreferredRelaysFromNip05(
+        nip05,
+        publicKey,
+      );
+
+      if (addedCount > 0) {
+        debugPrint('Loaded $addedCount preferred relay(s) from NIP-05: $nip05');
+      }
+    } catch (e) {
+      // Log error but don't fail - offline-first behavior
+      debugPrint('Warning: Failed to load preferred relays from NIP-05: $e');
+    }
+  }
 }