fix(desktop): wire gift wrap broadcast for DM reactions

The sendWrappedReaction function was creating NIP-17 gift wraps via
NIP17Factory but never broadcasting them. Added sendGiftWraps() to
IAccount interface with implementations in both Desktop and Android.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

desktopApp/src/jvmMain/kotlin/com/vitorpamplona/amethyst/desktop/model/DesktopIAccount.kt

@@ -39,6 +39,7 @@ import com.vitorpamplona.quartz.nip47WalletConnect.Request
 import com.vitorpamplona.quartz.nip47WalletConnect.Response
 import com.vitorpamplona.quartz.nip57Zaps.IPrivateZapsDecryptionCache
 import com.vitorpamplona.quartz.nip57Zaps.LnZapRequestEvent
+import com.vitorpamplona.quartz.nip59Giftwrap.wraps.GiftWrapEvent
 import com.vitorpamplona.quartz.utils.DualCase
 
 /**
@@ -140,4 +141,24 @@ class DesktopIAccount(
             relayManager.send(wrap, targetRelays)
         }
     }
+
+    override suspend fun sendGiftWraps(wraps: List<GiftWrapEvent>) {
+        wraps.forEach { wrap ->
+            val recipientKey = wrap.recipientPubKey()
+            val targetRelays =
+                if (recipientKey != null) {
+                    val dmRelays =
+                        localCache
+                            .getOrCreateUser(recipientKey)
+                            .dmInboxRelays()
+                            ?.toSet()
+                    dmRelays?.ifEmpty { null }
+                        ?: relayManager.connectedRelays.value
+                } else {
+                    relayManager.connectedRelays.value
+                }
+
+            relayManager.send(wrap, targetRelays)
+        }
+    }
 }

desktopApp/src/jvmMain/kotlin/com/vitorpamplona/amethyst/desktop/ui/chats/ChatPane.kt

@@ -383,11 +383,7 @@ private suspend fun sendWrappedReaction(
             signer = account.signer,
         )
 
-    // Send each gift wrap as a NIP-17 message
-    result.wraps.forEach { wrap ->
-        // Broadcast through the account's NIP-17 send path
-        // The wraps are already gift-wrapped, so we broadcast directly
-    }
+    account.sendGiftWraps(result.wraps)
 }
 
 /**