fix: voice messages show as compact pill instead of file attachment chip

Audio-only user messages (no text, only audio attachments) now render as
a clean "🎤 Sprachnachricht" pill instead of the ugly filename chip
(voice_1782170416740.m4a). Detects via attachments.all { kind == "audio" }
&& content.isBlank(). Regular file attachments are unaffected.

app/src/main/java/dev/kaizen/app/chat/ChatComponents.kt

@@ -489,6 +489,8 @@ fun MessageRow(
                 )
             }
 
+            val isVoiceOnly = hasAttachments && message.content.isBlank() && message.attachments.all { it.kind == "audio" }
+
             Box(
                 Modifier
                     .widthIn(max = 300.dp)
@@ -499,12 +501,28 @@ fun MessageRow(
                     .border(1.2.dp, borderBrush, shape),
             ) {
                 Column {
-                    if (hasAttachments) AttachmentGrid(message.attachments, Modifier.padding(6.dp))
+                    if (isVoiceOnly) {
-                    if (message.content.isNotBlank()) {
+                        Row(
-                        Text(
+                            Modifier.padding(horizontal = 16.dp, vertical = 12.dp),
-                            message.content, color = cs.onBackground, fontSize = 16.sp, lineHeight = 26.sp,
+                            verticalAlignment = Alignment.CenterVertically,
-                            modifier = Modifier.padding(start = 16.dp, end = 16.dp, top = if (hasAttachments) 4.dp else 13.dp, bottom = 13.dp),
+                        ) {
-                        )
+                            Icon(KaizenIcons.Mic, null, tint = accent.primary.copy(alpha = 0.7f), modifier = Modifier.size(18.dp))
+                            Spacer(Modifier.width(8.dp))
+                            Text(
+                                stringResource(R.string.chat_voice_message),
+                                color = cs.onBackground.copy(alpha = 0.70f),
+                                fontSize = 14.sp,
+                                fontWeight = FontWeight.Medium,
+                            )
+                        }
+                    } else {
+                        if (hasAttachments) AttachmentGrid(message.attachments, Modifier.padding(6.dp))
+                        if (message.content.isNotBlank()) {
+                            Text(
+                                message.content, color = cs.onBackground, fontSize = 16.sp, lineHeight = 26.sp,
+                                modifier = Modifier.padding(start = 16.dp, end = 16.dp, top = if (hasAttachments) 4.dp else 13.dp, bottom = 13.dp),
+                            )
+                        }
                     }
                 }
             }

app/src/main/res/values-en/strings.xml

@@ -20,6 +20,7 @@
     <string name="chat_open_menu">Open menu</string>
     <string name="chat_stop">Stop response</string>
     <string name="chat_recording">Recording …</string>
+    <string name="chat_voice_message">Voice message</string>
     <string name="chat_mic_permission">Microphone access required</string>
     <string name="chat_read_aloud">Read aloud</string>
     <string name="chat_tts_error">Read aloud failed</string>

app/src/main/res/values/strings.xml

@@ -22,6 +22,7 @@
     <string name="chat_open_menu">Menü öffnen</string>
     <string name="chat_stop">Antwort stoppen</string>
     <string name="chat_recording">Aufnahme läuft …</string>
+    <string name="chat_voice_message">Sprachnachricht</string>
     <string name="chat_mic_permission">Mikrofonzugriff wird benötigt</string>
     <string name="chat_read_aloud">Vorlesen</string>
     <string name="chat_tts_error">Vorlesen fehlgeschlagen</string>