docs: comprehensive CLAUDE.md update for 2026-06-23 session

- Document voice recording, TTS read-aloud, TTS cache, server-synced voice
- Add /api/v1/audio-gen and PATCH /api/v1/me to API contract
- Mark 5 Voice & Call Mode items as done (recording, TTS, cache, sync, backend)
- Add bugs-fixed section for 06-23 (padding, locale, shadow, migration)
- Update backend section with audio-gen, tts_voice, me PATCH

CLAUDE.md

@@ -26,9 +26,10 @@ Make the **native Android app** (`kaizen-app`) a valid daily-driver that talks t
 - **Sentinels** (`lib/chat/constants.ts`): `\x00` USAGE, `\x01` REASONING, `\x02` SOURCES, `\x03` TOOL, `\x04` QUERY. App currently strips all sentinels and renders only visible content.
 - **Models:** `GET {baseUrl}/api/v1/models` → `{ models: [{ id, name?, provider? }] }`.
 - **Conversations:** `GET /api/v1/conversations` → `{ conversations, hasMore }`. `POST /api/v1/conversations` → create. `GET /api/v1/conversations/[id]` → `{ messages }`. `POST /api/v1/conversations/[id]/messages` → persist. `POST /api/v1/conversations/[id]/title` → auto-title.
-- **Identity:** `GET /api/v1/me` → `{ id, email, name, role, defaultModel }`.
+- **Identity:** `GET /api/v1/me` → `{ id, email, name, role, defaultModel, ttsVoice }`. `PATCH /api/v1/me` with `{ ttsVoice }` to update preferences.
 - **Capability handshake:** `GET /api/v1/meta` → `{ app, apiVersion, features }` (unauth).
 - **Upload:** `POST /api/v1/upload` — multipart file → `{ url, kind, name, mimeType, size, fileId }`.
+- **Audio gen:** `POST /api/v1/audio-gen` — `{ prompt, kind: "speech"|"music", voice? }` → `{ url, cost }`. Gemini-TTS (speech) or Lyria (music) via Vertex. Audio persisted in Object Storage.
 
 ## App architecture
 
@@ -195,13 +196,16 @@ All backend work for the app is done. `pnpm test:run` green (774+), `tsc` + `lin
 - **`api_tokens` table** + SHA-256 hash storage (never raw). Migration `0024`.
 - **Bearer auth path** (`getTokenSession` / `requireActiveUserOrToken` in `lib/auth/guard.ts`).
 - **Token mint endpoint** `POST /api/v1/auth/token` — unauthenticated, Argon2id verify, anti-enumeration, rate-limited.
-- **`GET /api/v1/me`** — identity + `defaultModel` for native clients.
+- **`GET /api/v1/me`** — identity + `defaultModel` + `ttsVoice` for native clients.
+- **`PATCH /api/v1/me`** — update user preferences (`ttsVoice`, etc.). Bearer-authed.
 - **`GET /api/v1/models`** — Bearer-authed, returns filtered model catalog.
 - **`/api/v1/conversations`** — thin re-exports of canonical handlers, Bearer-authed.
 - **`POST /api/v1/auth/unlock`** — Bearer-authed, returns unlock token in response body (not cookie) for native clients. Rate-limited 10/5min per user.
 - **`GET /api/v1/conversations/[id]`** — accepts `X-Unlock-Token` header alongside the existing `kaizen_unlock` cookie for locked conversations.
 - **`GET /api/v1/meta`** — capability handshake.
 - **App-devices card** (`components/settings/app-tokens-card.tsx`) — see/revoke signed-in devices on `/settings/security`.
+- **`POST /api/v1/audio-gen`** — Gemini-TTS speech generation. Bearer-authed (re-export of `/api/audio-gen`). `{ prompt, kind: "speech", voice? }` → `{ url, cost }`.
+- **`tts_voice` column** on `users` table (migration 0030). Server-synced voice preference, read via `/api/v1/me`, written via `PATCH /api/v1/me`.
 - **API versioning** — `/api/v1/` for outward contract, additive-only within v1. Web-internal endpoints stay unversioned.
 
 ### App — shipped features (on-device verified on S25 Ultra)
@@ -260,6 +264,10 @@ All committed on `main`. Compile-verified on Mac (`./gradlew :app:compileDebugKo
 | `fd0de5c` | **Markdown upgrade** — tables (`\| col \| col \|`), ~~strikethrough~~, task lists (`- [x]`), clickable links (ACTION_VIEW), block comments (`/* */`), HTML comments, template strings, C/C++/Ruby/PHP/Dockerfile/TOML highlighting. All regex pre-compiled |
 | `bf94414` | **CallButton** — styled to match SendButton: 38dp circle, subtle accent gradient (16-28% alpha), AudioLines icon in accent color, press-scale animation |
 | `141d4de` | **Stop button + auto-logout + locale fix + login shadow migration** — red square stop button during streaming (cancels stream, preserves partial content), auto-logout on HTTP 401, EmptyHero date respects system locale, LoginScreen shadows migrated to kaizenShadow |
+| `edd8cca` | **Bottom padding fix** — LazyColumn bottom contentPadding 152→220dp, fixes messages overlapping mode pills after ChatInput two-row redesign |
+| `9e1f30d` | **Voice recording + TTS read-aloud** — Mic button wired to `MediaRecorder` (AAC/M4A), tap-to-record, auto-upload as audio attachment. Volume button on assistant messages → `POST /api/v1/audio-gen` → Gemini-TTS → `MediaPlayer` playback. `RECORD_AUDIO` permission |
+| `c4884a3` | **TTS audio cache in Room** — `ttsUrl` + `ttsVoice` on `MessageEntity` (Room v3), skip API call on replay with same voice. Voice change invalidates cache |
+| `1645be8` | **Server-synced TTS voice** — reads `ttsVoice` from `GET /api/v1/me`, uses it for all TTS calls. Voice set in web settings applies in app automatically |
 
 **Earlier UI/feel work (Phase 0 prototype → feel-first):**
 - Liquid glass styling, floating panels, glassmorphic sidebar
@@ -298,6 +306,13 @@ All committed on `main`. Compile-verified on Mac (`./gradlew :app:compileDebugKo
 - **Sidebar flicker on refresh** — `replaceAll()` did `DELETE ALL` + `INSERT`, causing Room Flow to emit empty list briefly. Fix: `upsert` + `deleteExcept` (no flash).
 - **Gallery/file picker single-select only** — `GetContent()` allowed only one item. Fix: gallery → `PickMultipleVisualMedia(ImageAndVideo)`, file → `OpenMultipleDocuments(["*/*"])`.
 
+### Bugs fixed (2026-06-23 — voice + UX session)
+
+- **Messages overlapping mode pills** — LazyColumn bottom `contentPadding` was 152dp but the two-row ChatInput redesign made the dock ~210dp tall. Fix: increased to 220dp.
+- **EmptyHero date hardcoded German** — `Locale.GERMAN` → `Locale.getDefault()`, now respects system/app language.
+- **LoginScreen used `Modifier.shadow`** — violated design system pillar 4 (multi-layer shadows). Fix: migrated to `kaizenShadow` (level1 for fields, level2 for button).
+- **Migration 0030 crash** — `pnpm db:generate` bundled the entire org schema (0026-0029) + `tts_voice` into one migration, causing duplicate CREATE TABLE / ADD COLUMN failures. Fix: reduced 0030 to only `ALTER TABLE users ADD COLUMN IF NOT EXISTS tts_voice text`.
+
 ## What's NOT done yet (app, priority order)
 
 ### 1. Remaining visual/UX gaps (daily-drive blockers)
@@ -341,10 +356,13 @@ These are what separate "prototype" from "daily-driver":
 ### 5. Voice & Call Mode
 
 **v1 — Pipeline (Weg A, uses existing backend):**
-- [ ] **Voice recording + send** — Android `MediaRecorder`, upload via `/api/v1/upload`, send as audio attachment via `/api/v1/chat` (Vertex understands audio natively)
-- [ ] **TTS playback** — POST response text to `/api/v1/audio-gen` (needs Bearer auth, currently web-session-only via `requireActiveUser`), play returned audio URL via `MediaPlayer`/`ExoPlayer`
+- [x] **Voice recording + send** — Android `MediaRecorder` (AAC/M4A, 44.1kHz/128kbps), tap-to-record mic button (red stop-square while recording), auto-upload via `/api/v1/upload`, sent as audio attachment via `/api/v1/chat`. Vertex understands audio natively; OpenRouter passes it as `input_audio`. Persisted in DB as normal attachment
+- [x] **TTS read-aloud** — Volume button on every assistant message. `POST /api/v1/audio-gen { prompt, kind: "speech", voice }` → Gemini-TTS → `MediaPlayer` streams the audio URL. Tap again to stop. Accent-colored icon during playback
+- [x] **TTS cache** — `ttsUrl` + `ttsVoice` fields on `MessageEntity` (Room v3). First play generates + caches; subsequent plays with same voice skip the API call. Voice change auto-invalidates
+- [x] **Server-synced voice** — `tts_voice` column on `users` table (migration 0030). Read from `GET /api/v1/me`, written via `PATCH /api/v1/me`. Web's `setCallVoice()` syncs to server. App reads on login/resume. Default "Kore"
+- [x] **Backend: Bearer-auth audio-gen** — `/api/audio-gen` switched to `requireActiveUserOrToken()`, v1 re-export at `/api/v1/audio-gen`
 - [ ] **Call UI** — fullscreen overlay, KaizenOrb with amplitude-reactive animation, push-to-talk mic button, status machine (idle → recording → uploading → thinking → speaking), voice picker (30 Gemini-TTS voices)
-- [ ] **Backend: Bearer-auth audio-gen** — switch `/api/audio-gen` from `requireActiveUser()` to `requireActiveUserOrToken()`, add v1 re-export at `/api/v1/audio-gen`
+- [ ] **In-app voice picker** — settings UI to choose from 30 Gemini-TTS voices (synced to server via `PATCH /api/v1/me`)
 
 The web's call mode (`use-call-mode.ts`, `call-view.tsx`) is the reference implementation. Same pipeline: Record → Upload → Chat (with audio attachment) → Text stream → TTS → Playback. No WebSocket needed.
 

app/src/main/AndroidManifest.xml

@@ -8,6 +8,9 @@
     <!-- Required to talk to the Kaizen backend (login + chat streaming) -->
     <uses-permission android:name="android.permission.INTERNET" />
 
+    <!-- Required for voice recording (mic button in chat) -->
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
+
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"

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

@@ -331,6 +331,8 @@ fun MessageRow(
     onCopy: (String) -> Unit = {},
     onDelete: ((String) -> Unit)? = null,
     onRegenerate: ((String) -> Unit)? = null,
+    onReadAloud: ((String) -> Unit)? = null,
+    isPlayingTts: Boolean = false,
 ) {
     val cs = MaterialTheme.colorScheme
     val isDark = isSystemInDarkTheme()
@@ -461,6 +463,14 @@ fun MessageRow(
                         copied = false
                     }
                 }
+                onReadAloud?.let { readAloud ->
+                    MessageActionButton(
+                        icon = KaizenIcons.Volume2,
+                        tint = if (isPlayingTts) accent.primary else cs.onSurfaceVariant.copy(alpha = 0.35f),
+                    ) {
+                        haptics.tick(); readAloud(message.content)
+                    }
+                }
                 onRegenerate?.let { regen ->
                     MessageActionButton(KaizenIcons.RefreshCw, cs.onSurfaceVariant.copy(alpha = 0.35f)) {
                         haptics.tick(); regen(message.wireId)
@@ -527,6 +537,8 @@ fun ChatInput(
     enabled: Boolean,
     isStreaming: Boolean = false,
     onStop: () -> Unit = {},
+    isRecording: Boolean = false,
+    onMicClick: () -> Unit = {},
     pendingFiles: List<PendingFile> = emptyList(),
     onAddClick: () -> Unit = {},
     onRemoveFile: (String) -> Unit = {},
@@ -584,11 +596,17 @@ fun ChatInput(
                 }
                 Spacer(Modifier.width(8.dp))
                 Box(
-                    Modifier.size(38.dp).clip(KaizenShapes.circle).background(iconBg),
+                    Modifier.size(38.dp).clip(KaizenShapes.circle)
+                        .background(if (isRecording) Color(0xFFEF4444).copy(alpha = if (isDark) 0.85f else 0.80f) else iconBg)
+                        .clickable(onClick = onMicClick),
                     contentAlignment = Alignment.Center,
                 ) {
+                    if (isRecording) {
+                        Icon(KaizenIcons.Square, stringResource(R.string.chat_recording), tint = Color.White, modifier = Modifier.size(14.dp))
+                    } else {
                         Icon(KaizenIcons.Mic, stringResource(R.string.chat_attachment), tint = cs.onSurfaceVariant, modifier = Modifier.size(19.dp))
                     }
+                }
 
                 Spacer(Modifier.weight(1f))
 

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

@@ -82,10 +82,17 @@ import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.lifecycle.compose.LifecycleResumeEffect
+import android.Manifest
+import android.content.pm.PackageManager
+import android.media.MediaPlayer
+import android.media.MediaRecorder
+import android.widget.Toast
+import androidx.core.content.ContextCompat
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.async
 import kotlinx.coroutines.launch
 import java.io.ByteArrayOutputStream
+import java.io.File
 
 // Screen enumeration for modular state-driven navigation (Zero Technical Debt)
 enum class AppScreen { Chat, Settings }
@@ -111,6 +118,16 @@ fun ChatScreen(
     var chatModel by remember { mutableStateOf<String?>(null) }
     var streamJob by remember { mutableStateOf<Job?>(null) }
 
+    // Audio recording state
+    var isRecording by remember { mutableStateOf(false) }
+    val recorderRef = remember { mutableStateOf<MediaRecorder?>(null) }
+    val audioFileRef = remember { mutableStateOf<File?>(null) }
+
+    // TTS playback state
+    var playingTtsForId by remember { mutableStateOf<Long?>(null) }
+    val ttsPlayerRef = remember { mutableStateOf<MediaPlayer?>(null) }
+    var ttsVoice by remember { mutableStateOf("Kore") }
+
     // Navigation State
     var currentScreen by remember { mutableStateOf(AppScreen.Chat) }
 
@@ -191,6 +208,78 @@ fun ChatScreen(
         uploadPickedFile("photo_${System.currentTimeMillis()}.jpg", "image/jpeg", stream.toByteArray())
     }
 
+    val micPermission = rememberLauncherForActivityResult(ActivityResultContracts.RequestPermission()) { granted ->
+        if (granted) startRecording(context, recorderRef, audioFileRef) { isRecording = true }
+        else Toast.makeText(context, context.getString(R.string.chat_mic_permission), Toast.LENGTH_SHORT).show()
+    }
+
+    fun toggleRecording() {
+        if (isRecording) {
+            stopRecording(recorderRef, audioFileRef) { name, mime, bytes ->
+                isRecording = false
+                uploadPickedFile(name, mime, bytes)
+            }
+        } else {
+            if (ContextCompat.checkSelfPermission(context, Manifest.permission.RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED) {
+                startRecording(context, recorderRef, audioFileRef) { isRecording = true }
+            } else {
+                micPermission.launch(Manifest.permission.RECORD_AUDIO)
+            }
+        }
+    }
+
+    fun playTtsUrl(url: String, messageId: Long) {
+        try {
+            val player = MediaPlayer().apply {
+                setDataSource(url)
+                prepareAsync()
+                setOnPreparedListener { start() }
+                setOnCompletionListener {
+                    release()
+                    ttsPlayerRef.value = null
+                    playingTtsForId = null
+                }
+                setOnErrorListener { _, _, _ ->
+                    release()
+                    ttsPlayerRef.value = null
+                    playingTtsForId = null
+                    true
+                }
+            }
+            ttsPlayerRef.value = player
+        } catch (_: Exception) {
+            playingTtsForId = null
+        }
+    }
+
+    fun readAloud(content: String, messageId: Long, wireId: String) {
+        val cfg = session.config ?: return
+        if (playingTtsForId == messageId) {
+            ttsPlayerRef.value?.release()
+            ttsPlayerRef.value = null
+            playingTtsForId = null
+            return
+        }
+        ttsPlayerRef.value?.release()
+        playingTtsForId = messageId
+        val voice = ttsVoice
+        scope.launch {
+            val cached = chat.messageDao.getTtsUrl(wireId, voice)
+            if (cached != null) {
+                playTtsUrl(cached, messageId)
+                return@launch
+            }
+            val url = KaizenApi.generateSpeech(cfg.baseUrl, cfg.token, content, voice)
+            if (url == null) {
+                playingTtsForId = null
+                Toast.makeText(context, context.getString(R.string.chat_tts_error), Toast.LENGTH_SHORT).show()
+                return@launch
+            }
+            chat.messageDao.updateTts(wireId, url, voice)
+            playTtsUrl(url, messageId)
+        }
+    }
+
     LaunchedEffect(session.config?.baseUrl, session.config?.token) {
         val cfg = session.config ?: return@LaunchedEffect
         loadError = null
@@ -209,6 +298,7 @@ fun ChatScreen(
         KaizenApi.fetchMe(cfg.baseUrl, cfg.token)?.let { me ->
             me.name?.let { settingsViewModel.updateUserName(it) }
             me.email?.let { settingsViewModel.updateUserEmail(it) }
+            me.ttsVoice?.let { ttsVoice = it }
         }
         chat.conversationRepo.refresh(cfg.baseUrl, cfg.token)
         if (errors.isNotEmpty()) {
@@ -659,6 +749,10 @@ fun ChatScreen(
                                                 send(userContent)
                                             }
                                         } else null,
+                                        onReadAloud = if (message.role == Role.Assistant && !message.streaming && message.content.isNotBlank()) { content ->
+                                            readAloud(content, message.id, message.wireId)
+                                        } else null,
+                                        isPlayingTts = playingTtsForId == message.id,
                                     )
                                 }
                             }
@@ -858,6 +952,8 @@ fun ChatScreen(
                                 enabled = !isStreaming,
                                 isStreaming = isStreaming,
                                 onStop = { streamJob?.cancel() },
+                                isRecording = isRecording,
+                                onMicClick = { toggleRecording() },
                                 pendingFiles = pendingFiles,
                                 onAddClick = { showAttachMenu = !showAttachMenu },
                                 onRemoveFile = { id -> pendingFiles.removeAll { it.id == id } },
@@ -950,3 +1046,53 @@ private fun chatErrorText(e: Throwable, ctx: android.content.Context): String =
     e is ChatHttpException -> ctx.getString(R.string.error_server, e.code)
     else -> ctx.getString(R.string.error_no_connection)
 }
+
+@Suppress("DEPRECATION")
+private fun startRecording(
+    context: android.content.Context,
+    recorderRef: androidx.compose.runtime.MutableState<MediaRecorder?>,
+    audioFileRef: androidx.compose.runtime.MutableState<File?>,
+    onStarted: () -> Unit,
+) {
+    try {
+        val file = File(context.cacheDir, "voice_${System.currentTimeMillis()}.m4a")
+        val recorder = MediaRecorder(context).apply {
+            setAudioSource(MediaRecorder.AudioSource.MIC)
+            setOutputFormat(MediaRecorder.OutputFormat.MPEG_4)
+            setAudioEncoder(MediaRecorder.AudioEncoder.AAC)
+            setAudioSamplingRate(44100)
+            setAudioEncodingBitRate(128000)
+            setOutputFile(file.absolutePath)
+            prepare()
+            start()
+        }
+        recorderRef.value = recorder
+        audioFileRef.value = file
+        onStarted()
+    } catch (_: Exception) {
+        recorderRef.value = null
+        audioFileRef.value = null
+    }
+}
+
+private fun stopRecording(
+    recorderRef: androidx.compose.runtime.MutableState<MediaRecorder?>,
+    audioFileRef: androidx.compose.runtime.MutableState<File?>,
+    onRecorded: (String, String, ByteArray) -> Unit,
+) {
+    val recorder = recorderRef.value ?: return
+    val file = audioFileRef.value ?: return
+    try {
+        recorder.stop()
+        recorder.release()
+    } catch (_: Exception) {
+        recorder.release()
+    }
+    recorderRef.value = null
+    audioFileRef.value = null
+    if (file.exists() && file.length() > 0) {
+        val bytes = file.readBytes()
+        file.delete()
+        onRecorded("voice_${System.currentTimeMillis()}.m4a", "audio/mp4", bytes)
+    }
+}

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

@@ -8,5 +8,6 @@ import dev.kaizen.app.db.MessageRepository
 class ChatViewModel(context: Context) {
     private val db = KaizenDatabase.get(context)
     val conversationRepo = ConversationRepository(db.conversationDao())
-    val messageRepo = MessageRepository(db.messageDao())
+    val messageDao = db.messageDao()
+    val messageRepo = MessageRepository(messageDao)
 }

app/src/main/java/dev/kaizen/app/db/Entities.kt

@@ -36,4 +36,6 @@ data class MessageEntity(
     val sortOrder: Int,
     val reasoning: String? = null,
     val sources: List<SearchSource> = emptyList(),
+    val ttsUrl: String? = null,
+    val ttsVoice: String? = null,
 )

app/src/main/java/dev/kaizen/app/db/KaizenDatabase.kt

@@ -8,7 +8,7 @@ import androidx.room.TypeConverters
 
 @Database(
     entities = [ConversationEntity::class, MessageEntity::class],
-    version = 2,
+    version = 3,
     exportSchema = false,
 )
 @TypeConverters(Converters::class)

app/src/main/java/dev/kaizen/app/db/MessageDao.kt

@@ -21,4 +21,10 @@ interface MessageDao {
 
     @Query("SELECT DISTINCT conversationId FROM messages")
     suspend fun cachedConversationIds(): List<String>
+
+    @Query("UPDATE messages SET ttsUrl = :url, ttsVoice = :voice WHERE id = :messageId")
+    suspend fun updateTts(messageId: String, url: String, voice: String)
+
+    @Query("SELECT ttsUrl FROM messages WHERE id = :messageId AND ttsVoice = :voice")
+    suspend fun getTtsUrl(messageId: String, voice: String): String?
 }

app/src/main/java/dev/kaizen/app/net/KaizenApi.kt

@@ -27,6 +27,7 @@ import java.util.concurrent.TimeUnit
     val name: String? = null,
     val email: String? = null,
     val defaultModel: String? = null,
+    val ttsVoice: String? = null,
 )
 @Serializable data class WireMessage(val role: String, val content: String)
 @Serializable private data class ChatRequest(
@@ -572,6 +573,35 @@ object KaizenApi {
         }
     }
 
+    @Serializable private data class SpeechRequest(val prompt: String, val kind: String = "speech", val voice: String? = null)
+    @Serializable private data class SpeechResponse(val url: String = "", val cost: Double? = null)
+
+    /** POST /api/v1/audio-gen — generate speech from text via Gemini-TTS. Returns the audio URL or null. */
+    suspend fun generateSpeech(baseUrl: String, token: String, text: String, voice: String? = null): String? =
+        withContext(Dispatchers.IO) {
+            val body = json.encodeToString(SpeechRequest(
+                prompt = text.take(2000),
+                voice = voice,
+            )).toRequestBody(jsonMedia)
+            val req = Request.Builder()
+                .url("$baseUrl/api/v1/audio-gen")
+                .post(body)
+                .header("Authorization", "Bearer $token")
+                .build()
+            try {
+                client.newCall(req).execute().use { resp ->
+                    if (!resp.isSuccessful) {
+                        Log.w(TAG, "generateSpeech: HTTP ${resp.code}")
+                        return@use null
+                    }
+                    json.decodeFromString<SpeechResponse>(resp.body!!.string()).url.takeIf { it.isNotBlank() }
+                }
+            } catch (e: Exception) {
+                Log.w(TAG, "generateSpeech: ${e.javaClass.simpleName}: ${e.message}")
+                null
+            }
+        }
+
     suspend fun prewarm(baseUrl: String) = withContext(Dispatchers.IO) {
         try {
             val req = Request.Builder().url("$baseUrl/api/v1/meta").build()

app/src/main/java/dev/kaizen/app/ui/icon/KaizenIcons.kt

@@ -91,6 +91,9 @@ object KaizenIcons {
     val ArrowDown: ImageVector get()     = Lucide.ArrowDown
     val ArrowUp: ImageVector get()       = Lucide.ArrowUp
 
+    // ── Audio ──────────────────────────────────────────────────────────────
+    val Volume2: ImageVector get()       = Lucide.Volume2
+
     // ── Custom (brand overrides) ────────────────────────────────────────────
     // Add hand-drawn SVGs here as ImageVector literals when ready.
     // Example:

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

@@ -19,6 +19,11 @@
     <string name="chat_error">Error</string>
     <string name="chat_open_menu">Open menu</string>
     <string name="chat_stop">Stop response</string>
+    <string name="chat_recording">Recording …</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>
+    <string name="chat_tts_unavailable">Read aloud not available (Vertex required)</string>
     <string name="attach_camera">Take Photo</string>
     <string name="attach_gallery">Photo &amp; Video</string>
     <string name="attach_file">Choose File</string>

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

@@ -21,6 +21,11 @@
     <string name="chat_error">Fehler</string>
     <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_mic_permission">Mikrofonzugriff wird benötigt</string>
+    <string name="chat_read_aloud">Vorlesen</string>
+    <string name="chat_tts_error">Vorlesen fehlgeschlagen</string>
+    <string name="chat_tts_unavailable">Vorlesen nicht verfügbar (Vertex benötigt)</string>
     <string name="attach_camera">Foto aufnehmen</string>
     <string name="attach_gallery">Foto &amp; Video</string>
     <string name="attach_file">Datei auswählen</string>