feat(media): wire encrypted media, server settings, and server preferences

- ChatPane: display ChatFileAttachment for encrypted file header events
- DesktopPreferences: add blossom server list persistence
- Settings: add MediaServerSettings section above relay settings
- ComposeNoteDialog: use preferred blossom server from preferences

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

desktopApp/src/jvmMain/kotlin/com/vitorpamplona/amethyst/desktop/DesktopPreferences.kt

@@ -68,4 +68,17 @@ object DesktopPreferences {
         set(value) {
             prefs.put(KEY_LAYOUT_MODE, value)
         }
+
+    private const val KEY_BLOSSOM_SERVERS = "blossom_servers"
+    private const val DEFAULT_BLOSSOM_SERVER = "https://blossom.primal.net"
+
+    var blossomServers: List<String>
+        get() {
+            val raw = prefs.get(KEY_BLOSSOM_SERVERS, DEFAULT_BLOSSOM_SERVER)
+            return if (raw.isBlank()) emptyList() else raw.split(",")
+        }
+        set(value) = prefs.put(KEY_BLOSSOM_SERVERS, value.joinToString(","))
+
+    val preferredBlossomServer: String
+        get() = blossomServers.firstOrNull() ?: DEFAULT_BLOSSOM_SERVER
 }

desktopApp/src/jvmMain/kotlin/com/vitorpamplona/amethyst/desktop/Main.kt

@@ -91,6 +91,7 @@ import com.vitorpamplona.amethyst.desktop.ui.deck.DeckState
 import com.vitorpamplona.amethyst.desktop.ui.deck.SinglePaneLayout
 import com.vitorpamplona.amethyst.desktop.ui.profile.ProfileInfoCard
 import com.vitorpamplona.amethyst.desktop.ui.relay.RelayStatusCard
+import com.vitorpamplona.amethyst.desktop.ui.settings.MediaServerSettings
 import com.vitorpamplona.quartz.nip01Core.relay.normalizer.RelayUrlNormalizer
 import com.vitorpamplona.quartz.nip47WalletConnect.Nip47WalletConnect
 import kotlinx.coroutines.CoroutineScope
@@ -877,6 +878,15 @@ fun RelaySettingsScreen(
         HorizontalDivider()
         Spacer(Modifier.height(24.dp))
 
+        // Media Server Settings
+        MediaServerSettings(
+            initialServers = DesktopPreferences.blossomServers,
+            onServersChanged = { DesktopPreferences.blossomServers = it },
+        )
+        Spacer(Modifier.height(24.dp))
+        HorizontalDivider()
+        Spacer(Modifier.height(24.dp))
+
         // Developer Settings Section (only in debug mode)
         if (DebugConfig.isDebugMode) {
             com.vitorpamplona.amethyst.desktop.ui

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

@@ -46,6 +46,7 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.window.Dialog
 import com.vitorpamplona.amethyst.commons.model.nip10TextNotes.PublishAction
+import com.vitorpamplona.amethyst.desktop.DesktopPreferences
 import com.vitorpamplona.amethyst.desktop.account.AccountState
 import com.vitorpamplona.amethyst.desktop.network.DesktopRelayConnectionManager
 import com.vitorpamplona.amethyst.desktop.service.upload.DesktopUploadOrchestrator
@@ -58,8 +59,6 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import java.io.File
 
-private const val DEFAULT_BLOSSOM_SERVER = "https://blossom.primal.net"
-
 @Composable
 fun ComposeNoteDialog(
     onDismiss: () -> Unit,
@@ -189,7 +188,7 @@ fun ComposeNoteDialog(
                                             orchestrator.upload(
                                                 file = file,
                                                 alt = null,
-                                                serverBaseUrl = DEFAULT_BLOSSOM_SERVER,
+                                                serverBaseUrl = DesktopPreferences.preferredBlossomServer,
                                                 signer = account.signer,
                                             )
                                         uploadTracker.onSuccess(result)

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

@@ -92,6 +92,7 @@ import com.vitorpamplona.quartz.nip01Core.hints.EventHintBundle
 import com.vitorpamplona.quartz.nip04Dm.messages.PrivateDmEvent
 import com.vitorpamplona.quartz.nip17Dm.NIP17Factory
 import com.vitorpamplona.quartz.nip17Dm.base.ChatroomKey
+import com.vitorpamplona.quartz.nip17Dm.files.ChatMessageEncryptedFileHeaderEvent
 import kotlinx.coroutines.launch
 
 private val isMacOS = System.getProperty("os.name").lowercase().contains("mac")
@@ -436,12 +437,20 @@ private fun MessageWithReactions(
                     }
                 },
             ) { _ ->
-                SelectionContainer {
-                    Text(
-                        text = decryptedContent ?: "",
-                        style = MaterialTheme.typography.bodyMedium,
-                        color = MaterialTheme.colorScheme.onSurface,
-                    )
+                when (note.event) {
+                    is ChatMessageEncryptedFileHeaderEvent -> {
+                        ChatFileAttachment(event = note.event as ChatMessageEncryptedFileHeaderEvent)
+                    }
+
+                    else -> {
+                        SelectionContainer {
+                            Text(
+                                text = decryptedContent ?: "",
+                                style = MaterialTheme.typography.bodyMedium,
+                                color = MaterialTheme.colorScheme.onSurface,
+                            )
+                        }
+                    }
                 }
             }
         }