Add drawer menu with flat structure, unified panel styling, Room/SQLCipher setup

app/build.gradle

@@ -1,6 +1,7 @@
 plugins {
     id 'com.android.application'
     id 'org.jetbrains.kotlin.android'
+    id 'com.google.devtools.ksp' version '1.9.22-1.0.17'
 }
 
 android {
@@ -50,4 +51,10 @@ dependencies {
     implementation 'io.noties.markwon:ext-strikethrough:4.6.2'
     implementation 'io.noties.markwon:ext-tables:4.6.2'
     implementation 'io.noties.markwon:ext-tasklist:4.6.2'
+
+    implementation 'androidx.room:room-runtime:2.6.1'
+    implementation 'androidx.room:room-ktx:2.6.1'
+    ksp 'androidx.room:room-compiler:2.6.1'
+    implementation 'net.zetetic:android-database-sqlcipher:4.5.4'
+    implementation 'androidx.sqlite:sqlite-ktx:2.4.0'
 }

app/src/main/java/com/mistral/chat/data/ChatDatabase.kt

@@ -0,0 +1,64 @@
+package com.mistral.chat.data
+
+import android.content.Context
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import net.sqlcipher.database.SupportFactory
+
+@Database(
+    entities = [Profile::class, Session::class, MessageEntity::class, Setting::class],
+    version = 1,
+    exportSchema = false
+)
+abstract class ChatDatabase : RoomDatabase() {
+    abstract fun profileDao(): ProfileDao
+    abstract fun sessionDao(): SessionDao
+    abstract fun messageDao(): MessageDao
+    abstract fun settingDao(): SettingDao
+    
+    companion object {
+        private const val DATABASE_NAME = "mistral_chat.db"
+        
+        @Volatile
+        private var INSTANCE: ChatDatabase? = null
+        
+        fun getInstance(context: Context): ChatDatabase {
+            return INSTANCE ?: synchronized(this) {
+                INSTANCE ?: buildDatabase(context).also { INSTANCE = it }
+            }
+        }
+        
+        private fun buildDatabase(context: Context): ChatDatabase {
+            val passphrase = getOrCreatePassphrase(context)
+            val factory = SupportFactory(passphrase)
+            
+            return Room.databaseBuilder(
+                context.applicationContext,
+                ChatDatabase::class.java,
+                DATABASE_NAME
+            )
+                .openHelperFactory(factory)
+                .fallbackToDestructiveMigration()
+                .build()
+        }
+        
+        private fun getOrCreatePassphrase(context: Context): ByteArray {
+            val prefs = context.getSharedPreferences("db_prefs", Context.MODE_PRIVATE)
+            val existingKey = prefs.getString("db_key", null)
+            
+            return if (existingKey != null) {
+                existingKey.toByteArray(Charsets.UTF_8)
+            } else {
+                val newKey = generateSecureKey()
+                prefs.edit().putString("db_key", newKey).apply()
+                newKey.toByteArray(Charsets.UTF_8)
+            }
+        }
+        
+        private fun generateSecureKey(): String {
+            val chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*"
+            return (1..32).map { chars.random() }.joinToString("")
+        }
+    }
+}

app/src/main/java/com/mistral/chat/data/MessageDao.kt

@@ -0,0 +1,31 @@
+package com.mistral.chat.data
+
+import androidx.room.*
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface MessageDao {
+    @Query("SELECT * FROM messages WHERE sessionId = :sessionId ORDER BY timestamp ASC")
+    fun getMessagesBySession(sessionId: Long): Flow<List<MessageEntity>>
+    
+    @Query("SELECT * FROM messages WHERE sessionId = :sessionId ORDER BY timestamp ASC")
+    suspend fun getMessagesBySessionSync(sessionId: Long): List<MessageEntity>
+    
+    @Query("SELECT COUNT(*) FROM messages WHERE sessionId = :sessionId")
+    suspend fun getMessageCount(sessionId: Long): Int
+    
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insert(message: MessageEntity): Long
+    
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertAll(messages: List<MessageEntity>)
+    
+    @Delete
+    suspend fun delete(message: MessageEntity)
+    
+    @Query("DELETE FROM messages WHERE sessionId = :sessionId")
+    suspend fun deleteBySession(sessionId: Long)
+    
+    @Query("DELETE FROM messages")
+    suspend fun deleteAll()
+}

app/src/main/java/com/mistral/chat/data/Profile.kt

@@ -0,0 +1,15 @@
+package com.mistral.chat.data
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "profiles")
+data class Profile(
+    @PrimaryKey(autoGenerate = true)
+    val id: Long = 0,
+    val name: String,
+    val bio: String = "",
+    val preferences: String = "",
+    val createdAt: Long = System.currentTimeMillis(),
+    val updatedAt: Long = System.currentTimeMillis()
+)

app/src/main/java/com/mistral/chat/data/ProfileDao.kt

@@ -0,0 +1,28 @@
+package com.mistral.chat.data
+
+import androidx.room.*
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface ProfileDao {
+    @Query("SELECT * FROM profiles ORDER BY updatedAt DESC")
+    fun getAllProfiles(): Flow<List<Profile>>
+    
+    @Query("SELECT * FROM profiles WHERE id = :id")
+    suspend fun getProfileById(id: Long): Profile?
+    
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insert(profile: Profile): Long
+    
+    @Update
+    suspend fun update(profile: Profile)
+    
+    @Delete
+    suspend fun delete(profile: Profile)
+    
+    @Query("DELETE FROM profiles WHERE id = :id")
+    suspend fun deleteById(id: Long)
+    
+    @Query("DELETE FROM profiles")
+    suspend fun deleteAll()
+}

app/src/main/java/com/mistral/chat/data/Session.kt

@@ -0,0 +1,29 @@
+package com.mistral.chat.data
+
+import androidx.room.Entity
+import androidx.room.ForeignKey
+import androidx.room.Index
+import androidx.room.PrimaryKey
+
+@Entity(
+    tableName = "sessions",
+    foreignKeys = [
+        ForeignKey(
+            entity = Profile::class,
+            parentColumns = ["id"],
+            childColumns = ["profileId"],
+            onDelete = ForeignKey.SET_NULL
+        )
+    ],
+    indices = [Index("profileId")]
+)
+data class Session(
+    @PrimaryKey(autoGenerate = true)
+    val id: Long = 0,
+    val profileId: Long? = null,
+    val title: String = "Новая сессия",
+    val isManuallyRenamed: Boolean = false,
+    val isTitleGenerated: Boolean = false,
+    val createdAt: Long = System.currentTimeMillis(),
+    val updatedAt: Long = System.currentTimeMillis()
+)

app/src/main/java/com/mistral/chat/data/SessionDao.kt

@@ -0,0 +1,40 @@
+package com.mistral.chat.data
+
+import androidx.room.*
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface SessionDao {
+    @Query("SELECT * FROM sessions ORDER BY updatedAt DESC")
+    fun getAllSessions(): Flow<List<Session>>
+    
+    @Query("SELECT * FROM sessions WHERE profileId = :profileId ORDER BY updatedAt DESC")
+    fun getSessionsByProfile(profileId: Long): Flow<List<Session>>
+    
+    @Query("SELECT * FROM sessions WHERE profileId IS NULL ORDER BY updatedAt DESC")
+    fun getSessionsWithoutProfile(): Flow<List<Session>>
+    
+    @Query("SELECT * FROM sessions WHERE id = :id")
+    suspend fun getSessionById(id: Long): Session?
+    
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insert(session: Session): Long
+    
+    @Update
+    suspend fun update(session: Session)
+    
+    @Delete
+    suspend fun delete(session: Session)
+    
+    @Query("DELETE FROM sessions WHERE id = :id")
+    suspend fun deleteById(id: Long)
+    
+    @Query("DELETE FROM sessions")
+    suspend fun deleteAll()
+    
+    @Query("UPDATE sessions SET updatedAt = :timestamp WHERE id = :sessionId")
+    suspend fun updateTimestamp(sessionId: Long, timestamp: Long = System.currentTimeMillis())
+    
+    @Query("UPDATE sessions SET title = :title, isManuallyRenamed = 1 WHERE id = :sessionId")
+    suspend fun updateTitle(sessionId: Long, title: String)
+}

app/src/main/java/com/mistral/chat/data/Setting.kt

@@ -0,0 +1,11 @@
+package com.mistral.chat.data
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "settings")
+data class Setting(
+    @PrimaryKey
+    val key: String,
+    val value: String
+)

app/src/main/java/com/mistral/chat/data/SettingDao.kt

@@ -0,0 +1,22 @@
+package com.mistral.chat.data
+
+import androidx.room.*
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface SettingDao {
+    @Query("SELECT * FROM settings WHERE `key` = :key")
+    suspend fun getSetting(key: String): Setting?
+    
+    @Query("SELECT value FROM settings WHERE `key` = :key")
+    suspend fun getValue(key: String): String?
+    
+    @Query("SELECT value FROM settings WHERE `key` = :key")
+    fun getValueFlow(key: String): Flow<String?>
+    
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insert(setting: Setting)
+    
+    @Query("DELETE FROM settings WHERE `key` = :key")
+    suspend fun delete(key: String)
+}

app/src/main/java/com/mistral/chat/ui/DrawerSubmenuAdapter.kt

@@ -0,0 +1,54 @@
+package com.mistral.chat.ui
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.core.content.ContextCompat
+import androidx.recyclerview.widget.RecyclerView
+import com.mistral.chat.R
+
+class DrawerSubmenuAdapter(
+    private val items: List<DrawerMenuItem>,
+    private val onItemClick: (DrawerMenuItem) -> Unit
+) : RecyclerView.Adapter<DrawerSubmenuAdapter.ViewHolder>() {
+
+    data class DrawerMenuItem(
+        val id: String,
+        val title: String,
+        val icon: Int? = null,
+        val isSelected: Boolean = false
+    )
+
+    class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        val icon: ImageView = itemView.findViewById(R.id.itemIcon)
+        val title: TextView = itemView.findViewById(R.id.itemTitle)
+        val check: ImageView = itemView.findViewById(R.id.itemCheck)
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val view = LayoutInflater.from(parent.context).inflate(R.layout.item_drawer, parent, false)
+        return ViewHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val item = items[position]
+        holder.title.text = item.title
+        
+        if (item.icon != null) {
+            holder.icon.setImageResource(item.icon)
+            holder.icon.visibility = View.VISIBLE
+        } else {
+            holder.icon.visibility = View.GONE
+        }
+        
+        holder.check.visibility = if (item.isSelected) View.VISIBLE else View.GONE
+        
+        holder.itemView.setOnClickListener {
+            onItemClick(item)
+        }
+    }
+
+    override fun getItemCount(): Int = items.size
+}

app/src/main/java/com/mistral/chat/ui/MainActivity.kt

@@ -90,6 +90,7 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
         private const val KEY_NEW_SESSION_ON_START = "new_session_on_start"
         private const val KEY_LAST_PROFILE_ID = "last_profile_id"
         private const val KEY_SELECTED_MODEL = "selected_model"
+        private const val KEY_THEME_MODE = "theme_mode"
         private const val MAX_PROFILES = 10
     }
 
@@ -193,7 +194,10 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
             R.id.action_clear_all -> {
                 showClearAllDialog()
             }
-            R.id.action_settings -> {
+            R.id.action_appearance -> {
+                showThemeDialog()
+            }
+            R.id.action_session -> {
                 showSettingsDialog()
             }
             R.id.action_about -> {
@@ -298,6 +302,31 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
             .show()
     }
 
+    private fun showThemeDialog() {
+        val currentTheme = prefs.getInt(KEY_THEME_MODE, AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM)
+        val options = arrayOf("Системная", "Светлая", "Тёмная")
+        val selectedIndex = when (currentTheme) {
+            AppCompatDelegate.MODE_NIGHT_NO -> 1
+            AppCompatDelegate.MODE_NIGHT_YES -> 2
+            else -> 0
+        }
+        
+        AlertDialog.Builder(this)
+            .setTitle(R.string.appearance_settings)
+            .setSingleChoiceItems(options, selectedIndex) { dialog, which ->
+                val mode = when (which) {
+                    1 -> AppCompatDelegate.MODE_NIGHT_NO
+                    2 -> AppCompatDelegate.MODE_NIGHT_YES
+                    else -> AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
+                }
+                prefs.edit().putInt(KEY_THEME_MODE, mode).apply()
+                AppCompatDelegate.setDefaultNightMode(mode)
+                dialog.dismiss()
+            }
+            .setNegativeButton(R.string.cancel, null)
+            .show()
+    }
+
     private fun showAboutDialog() {
         AlertDialog.Builder(this)
             .setTitle(R.string.about)
@@ -707,22 +736,16 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
     }
 
     private fun addMessage(message: Message) {
-        val isAssistantMessage = !message.isUser
         val newPosition = messages.size - 1
         
         messages.add(message)
         adapter.notifyItemInserted(newPosition)
         
-        // Scroll to beginning of assistant messages so user sees the sender name first
-        if (isAssistantMessage) {
-            recyclerView.post {
-                recyclerView.scrollToPosition(0)
-                // Then scroll to show the new message from beginning
-                val scrollAmount = (recyclerView.computeVerticalScrollExtent() - 200).coerceAtLeast(0)
-                recyclerView.post {
-                    recyclerView.scrollBy(0, scrollAmount)
-                }
-            }
+        // Scroll to show new AI response
+        if (!message.isUser) {
+            recyclerView.postDelayed({
+                recyclerView.scrollToPosition(newPosition)
+            }, 150)
         }
         
         val sessionId = currentSessionId
@@ -738,10 +761,6 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
                 database.sessionDao().updateTimestamp(sessionId)
             }
         }
-        
-        recyclerView.postDelayed({
-            recyclerView.scrollToPosition(messages.size - 1)
-        }, 100)
     }
 
     private fun saveMessageToDatabase(sessionId: Long?, content: String, isUser: Boolean, senderName: String?) {

app/src/main/java/com/mistral/chat/ui/ProfilesAdapter.kt

@@ -0,0 +1,55 @@
+package com.mistral.chat.ui
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import com.mistral.chat.R
+import com.mistral.chat.data.Profile
+
+class ProfilesAdapter(
+    private val profiles: List<Profile>,
+    private val onProfileClick: (Profile) -> Unit,
+    private val onProfileLongClick: (Profile) -> Unit,
+    private val getSelectedProfileId: () -> Long?
+) : RecyclerView.Adapter<ProfilesAdapter.ViewHolder>() {
+
+    class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
+        val icon: ImageView = view.findViewById(R.id.profileIcon)
+        val name: TextView = view.findViewById(R.id.profileName)
+        val checkmark: ImageView = view.findViewById(R.id.profileCheckmark)
+    }
+
+    fun refresh() {
+        notifyDataSetChanged()
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val view = LayoutInflater.from(parent.context)
+            .inflate(R.layout.item_profile, parent, false)
+        return ViewHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val profile = profiles[position]
+        val selectedId = getSelectedProfileId()
+        
+        holder.name.text = if (profile.name.length > 12) {
+            profile.name.take(12) + "..."
+        } else {
+            profile.name
+        }
+        holder.name.alpha = if (profile.id == selectedId) 1.0f else 0.7f
+        holder.checkmark.visibility = if (profile.id == selectedId) View.VISIBLE else View.GONE
+        
+        holder.itemView.setOnClickListener { onProfileClick(profile) }
+        holder.itemView.setOnLongClickListener {
+            onProfileLongClick(profile)
+            true
+        }
+    }
+
+    override fun getItemCount(): Int = profiles.size
+}

app/src/main/java/com/mistral/chat/ui/SessionsAdapter.kt

@@ -0,0 +1,45 @@
+package com.mistral.chat.ui
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import com.mistral.chat.R
+import com.mistral.chat.data.Session
+
+class SessionsAdapter(
+    private val sessions: List<Session>,
+    private val getCurrentSessionId: () -> Long?,
+    private val onSessionClick: (Session) -> Unit,
+    private val onSessionLongClick: (Session) -> Unit
+) : RecyclerView.Adapter<SessionsAdapter.ViewHolder>() {
+
+    class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
+        val title: TextView = view.findViewById(R.id.sessionTitle)
+        val checkmark: ImageView = view.findViewById(R.id.sessionCheckmark)
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val view = LayoutInflater.from(parent.context)
+            .inflate(R.layout.item_session, parent, false)
+        return ViewHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val session = sessions[position]
+        val currentId = getCurrentSessionId()
+        holder.title.text = session.title
+        holder.title.alpha = if (session.id == currentId) 1.0f else 0.7f
+        holder.checkmark.visibility = if (session.id == currentId) View.VISIBLE else View.GONE
+        
+        holder.itemView.setOnClickListener { onSessionClick(session) }
+        holder.itemView.setOnLongClickListener {
+            onSessionLongClick(session)
+            true
+        }
+    }
+
+    override fun getItemCount(): Int = sessions.size
+}

app/src/main/res/drawable/ic_add.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorOnSurface"
+        android:pathData="M19,13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/>
+</vector>

app/src/main/res/drawable/ic_arrow_back.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorOnSurface">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M20,11H7.83l5.59,-5.59L12,4l-8,8 8,8 1.41,-1.41L7.83,13H20v-2z"/>
+</vector>

app/src/main/res/drawable/ic_check.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorOnSurface"
+        android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zm-2,15l-5,-5 1.41,-1.41L10,14.17l7.59,-7.59L19,8l-9,9z"/>
+</vector>

app/src/main/res/drawable/ic_delete.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorOnSurface"
+        android:pathData="M6,19c0,1.1 0.9,2 2,2h8c1.1,0 2,-0.9 2,-2V7H6v12zM19,4h-3.5l-1,-1h-5l-1,1H5v2h14V4z"/>
+</vector>

app/src/main/res/drawable/ic_edit.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorOnSurface">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M3,17.25V21h3.75L17.81,9.94l-3.75,-3.75L3,17.25zM20.71,7.04c0.39,-0.39 0.39,-1.02 0,-1.41l-2.34,-2.34c-0.39,-0.39 -1.02,-0.39 -1.41,0l-1.83,1.83 3.75,3.75 1.83,-1.83z"/>
+</vector>

app/src/main/res/drawable/ic_info.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorOnSurface"
+        android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zm1,15h-2v-6h2v6zm0,-8h-2V7h2v2z"/>
+</vector>

app/src/main/res/drawable/ic_key.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorOnSurface"
+        android:pathData="M12.65,10C11.83,7.67 9.61,6 7,6c-3.31,0 -6,2.69 -6,6s2.69,6 6,6c2.61,0 4.83,-1.67 5.65,-4H17v4h4v-4h2v-4H12.65zM7,14c-1.1,0 -2,-0.9 -2,-2s0.9,-2 2,-2 2,0.9 2,2 -0.9,2 -2,2z"/>
+</vector>

app/src/main/res/drawable/ic_menu_hamburger.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorOnSurface"
+        android:pathData="M3,18h18v-2H3v2zm0,-5h18v-2H3v2zm0,-7v2h18V6H3z"/>
+</vector>

app/src/main/res/drawable/ic_person.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorOnSurface"
+        android:pathData="M12,12c2.21,0 4,-1.79 4,-4s-1.79,-4 -4,-4 -4,1.79 -4,4 1.79,4 4,4zm0,2c-2.67,0 -8,1.34 -8,4v2h16v-2c0,-2.66 -5.33,-4 -8,-4z"/>
+</vector>

app/src/main/res/drawable/ic_settings.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="?attr/colorOnSurface"
+        android:pathData="M19.14,12.94c0.04,-0.31 0.06,-0.63 0.06,-0.94c0,-0.31 -0.02,-0.63 -0.06,-0.94l2.03,-1.58c0.18,-0.14 0.23,-0.41 0.12,-0.61l-1.92,-3.32c-0.12,-0.22 -0.37,-0.29 -0.59,-0.22l-2.39,0.96c-0.5,-0.38 -1.03,-0.7 -1.62,-0.94L14.4,2.81c-0.04,-0.24 -0.24,-0.41 -0.48,-0.41h-3.84c-0.24,0 -0.43,0.17 -0.47,0.41L9.25,5.35C8.66,5.59 8.12,5.92 7.63,6.29L5.24,5.33c-0.22,-0.08 -0.47,0 -0.59,0.22L2.74,8.87C2.62,9.08 2.66,9.34 2.86,9.48l2.03,1.58C4.84,11.37 4.8,11.69 4.8,12s0.02,0.63 0.06,0.94l-2.03,1.58c-0.18,0.14 -0.23,0.41 -0.12,0.61l1.92,3.32c0.12,0.22 0.37,0.29 0.59,0.22l2.39,-0.96c0.5,0.38 1.03,0.7 1.62,0.94l0.36,2.54c0.05,0.24 0.24,0.41 0.48,0.41h3.84c0.24,0 0.44,-0.17 0.47,-0.41l0.36,-2.54c0.59,-0.24 1.13,-0.56 1.62,-0.94l2.39,0.96c0.22,0.08 0.47,0 0.59,-0.22l1.92,-3.32c0.12,-0.22 0.07,-0.47 -0.12,-0.61L19.14,12.94zM12,15.6c-1.98,0 -3.6,-1.62 -3.6,-3.6s1.62,-3.6 3.6,-3.6s3.6,1.62 3.6,3.6S13.98,15.6 12,15.6z"/>
+</vector>

app/src/main/res/layout/dialog_clear_all.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="24dp">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/clear_all_confirm"
+        android:textSize="16sp"
+        android:layout_marginBottom="16dp" />
+
+    <CheckBox
+        android:id="@+id/deleteProfilesCheckbox"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/clear_all_delete_profiles"
+        android:textSize="14sp" />
+
+</LinearLayout>

app/src/main/res/layout/dialog_profile_edit.xml

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:hint="@string/profile_name"
+        style="@style/Widget.Material3.TextInputLayout.OutlinedBox">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/profileNameInput"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="textPersonName" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:hint="@string/profile_bio"
+        style="@style/Widget.Material3.TextInputLayout.OutlinedBox">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/profileBioInput"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="textMultiLine"
+            android:minLines="3" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:hint="@string/profile_preferences"
+        style="@style/Widget.Material3.TextInputLayout.OutlinedBox">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/profilePreferencesInput"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="textMultiLine"
+            android:minLines="2" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+</LinearLayout>

app/src/main/res/layout/dialog_profiles.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/profilesList"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:maxHeight="300dp" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/addProfileButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:text="@string/new_profile"
+        style="@style/Widget.Material3.Button.OutlinedButton" />
+
+</LinearLayout>

app/src/main/res/layout/drawer_main_menu.xml

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="8dp">
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/btnProfiles"
+        style="@style/Widget.Material3.Button.TextButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/profiles"
+        android:gravity="start|center_vertical"
+        android:paddingStart="16dp"
+        android:paddingEnd="16dp"
+        app:icon="@drawable/ic_person"
+        app:iconGravity="start"
+        xmlns:app="http://schemas.android.com/apk/res-auto" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/btnSettings"
+        style="@style/Widget.Material3.Button.TextButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/settings"
+        android:gravity="start|center_vertical"
+        android:paddingStart="16dp"
+        android:paddingEnd="16dp"
+        app:icon="@drawable/ic_settings"
+        app:iconGravity="start"
+        xmlns:app="http://schemas.android.com/apk/res-auto" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/btnClearHistory"
+        style="@style/Widget.Material3.Button.TextButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/clear_history"
+        android:gravity="start|center_vertical"
+        android:paddingStart="16dp"
+        android:paddingEnd="16dp"
+        app:icon="@drawable/ic_delete"
+        app:iconGravity="start"
+        xmlns:app="http://schemas.android.com/apk/res-auto" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/btnApiKey"
+        style="@style/Widget.Material3.Button.TextButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/api_key"
+        android:gravity="start|center_vertical"
+        android:paddingStart="16dp"
+        android:paddingEnd="16dp"
+        app:icon="@drawable/ic_key"
+        app:iconGravity="start"
+        xmlns:app="http://schemas.android.com/apk/res-auto" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/btnAbout"
+        style="@style/Widget.Material3.Button.TextButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/about"
+        android:gravity="start|center_vertical"
+        android:paddingStart="16dp"
+        android:paddingEnd="16dp"
+        app:icon="@drawable/ic_info"
+        app:iconGravity="start"
+        xmlns:app="http://schemas.android.com/apk/res-auto" />
+
+</LinearLayout>

app/src/main/res/layout/drawer_profile_edit.xml

@@ -0,0 +1,88 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:hint="@string/profile_name"
+        style="@style/Widget.Material3.TextInputLayout.OutlinedBox">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/nameInput"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="textPersonName" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:hint="@string/profile_bio"
+        style="@style/Widget.Material3.TextInputLayout.OutlinedBox">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/bioInput"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="textMultiLine"
+            android:minLines="3" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:hint="@string/profile_preferences"
+        style="@style/Widget.Material3.TextInputLayout.OutlinedBox">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/preferencesInput"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="textMultiLine"
+            android:minLines="2" />
+
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="24dp"
+        android:orientation="horizontal">
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/cancelButton"
+            style="@style/Widget.Material3.Button.TextButton"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/cancel" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/saveButton"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/save" />
+
+    </LinearLayout>
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/deleteButton"
+        style="@style/Widget.Material3.Button.TextButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:text="@string/delete"
+        android:textColor="?attr/colorError"
+        android:visibility="gone" />
+
+</LinearLayout>

app/src/main/res/layout/drawer_settings_menu.xml

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="8dp">
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/btnBack"
+        style="@style/Widget.Material3.Button.TextButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/back"
+        android:gravity="start|center_vertical"
+        android:paddingStart="16dp"
+        android:paddingEnd="16dp" />
+
+    <View
+        android:layout_width="match_parent"
+        android:layout_height="1dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginBottom="8dp"
+        android:background="?attr/colorOutline" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/btnAppearance"
+        style="@style/Widget.Material3.Button.TextButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/appearance_settings"
+        android:gravity="start|center_vertical"
+        android:paddingStart="16dp"
+        android:paddingEnd="16dp" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/btnSession"
+        style="@style/Widget.Material3.Button.TextButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/session_settings"
+        android:gravity="start|center_vertical"
+        android:paddingStart="16dp"
+        android:paddingEnd="16dp" />
+
+</LinearLayout>

app/src/main/res/layout/drawer_submenu.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/drawerSubmenuContainer"
+    android:layout_width="300dp"
+    android:layout_height="match_parent"
+    android:layout_gravity="start"
+    android:background="?attr/colorSurface"
+    android:orientation="vertical"
+    android:visibility="gone">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="?attr/actionBarSize"
+        android:orientation="horizontal"
+        android:gravity="center_vertical"
+        android:paddingStart="4dp"
+        android:paddingEnd="8dp">
+
+        <ImageButton
+            android:id="@+id/backButton"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:src="@drawable/ic_arrow_back"
+            android:contentDescription="@string/back" />
+
+        <TextView
+            android:id="@+id/submenuTitle"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:layout_marginStart="8dp"
+            android:textSize="18sp"
+            android:textStyle="bold"
+            android:textColor="?attr/colorOnSurface" />
+
+    </LinearLayout>
+
+    <View
+        android:layout_width="match_parent"
+        android:layout_height="1dp"
+        android:background="?attr/colorOutlineVariant" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/submenuRecyclerView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:padding="8dp" />
+
+</LinearLayout>

app/src/main/res/layout/item_drawer.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:gravity="center_vertical"
+    android:padding="16dp"
+    android:background="?attr/selectableItemBackground">
+
+    <ImageView
+        android:id="@+id/itemIcon"
+        android:layout_width="24dp"
+        android:layout_height="24dp"
+        android:src="@drawable/ic_person"
+        app:tint="?attr/colorOnSurface"
+        xmlns:app="http://schemas.android.com/apk/res-auto" />
+
+    <TextView
+        android:id="@+id/itemTitle"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:layout_marginStart="16dp"
+        android:textSize="16sp"
+        android:textColor="?attr/colorOnSurface" />
+
+    <ImageView
+        android:id="@+id/itemCheck"
+        android:layout_width="24dp"
+        android:layout_height="24dp"
+        android:src="@drawable/ic_check"
+        android:visibility="gone"
+        app:tint="?attr/colorPrimary"
+        xmlns:app="http://schemas.android.com/apk/res-auto" />
+
+</LinearLayout>

app/src/main/res/layout/item_profile.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:gravity="center_vertical"
+    android:padding="8dp"
+    android:background="?attr/selectableItemBackground">
+
+    <ImageView
+        android:id="@+id/profileIcon"
+        android:layout_width="32dp"
+        android:layout_height="32dp"
+        android:src="@drawable/ic_person"
+        android:contentDescription="@string/profile" />
+
+    <TextView
+        android:id="@+id/profileName"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:layout_marginStart="12dp"
+        android:textSize="14sp"
+        android:textColor="?attr/colorOnSurface" />
+
+    <ImageView
+        android:id="@+id/profileCheckmark"
+        android:layout_width="20dp"
+        android:layout_height="20dp"
+        android:src="@drawable/ic_check"
+        android:visibility="gone"
+        android:contentDescription="@string/selected" />
+
+</LinearLayout>

app/src/main/res/layout/item_session.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:gravity="center_vertical"
+    android:padding="8dp"
+    android:background="?attr/selectableItemBackground">
+
+    <TextView
+        android:id="@+id/sessionTitle"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:textSize="14sp"
+        android:textColor="?attr/colorOnSurface"
+        android:maxLines="2"
+        android:ellipsize="end" />
+
+    <ImageView
+        android:id="@+id/sessionCheckmark"
+        android:layout_width="20dp"
+        android:layout_height="20dp"
+        android:src="@drawable/ic_check"
+        android:visibility="gone"
+        android:contentDescription="@string/save" />
+
+</LinearLayout>

app/src/main/res/layout/nav_header.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="24dp"
+    android:background="?attr/colorPrimaryContainer">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/app_name"
+        android:textSize="24sp"
+        android:textStyle="bold"
+        android:textColor="?attr/colorOnPrimaryContainer" />
+
+</LinearLayout>

app/src/main/res/layout/panel_right.xml

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/panelRightContent"
+    android:layout_width="300dp"
+    android:layout_height="match_parent"
+    android:background="?attr/colorSurface"
+    android:orientation="vertical">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="16dp"
+        android:text="@string/profiles"
+        android:textSize="14sp"
+        android:textStyle="bold"
+        android:textColor="?attr/colorOnSurfaceVariant" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/profilesRecyclerView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingHorizontal="8dp" />
+
+    <View
+        android:layout_width="match_parent"
+        android:layout_height="1dp"
+        android:layout_marginTop="8dp"
+        android:background="?attr/colorOutlineVariant" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="16dp"
+        android:text="@string/sessions"
+        android:textSize="14sp"
+        android:textStyle="bold"
+        android:textColor="?attr/colorOnSurfaceVariant" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/sessionsRecyclerView"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:paddingHorizontal="8dp" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/newSessionButton"
+        style="@style/Widget.Material3.Button.TonalButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp"
+        android:text="@string/new_session"
+        app:icon="@drawable/ic_add" />
+
+</LinearLayout>

app/src/main/res/layout/screen_api_key.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fillViewport="true">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="16dp">
+
+        <TextView
+            android:id="@+id/currentKeyText"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textSize="16sp"
+            android:textColor="?attr/colorOnSurface"
+            android:layout_marginBottom="16dp" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/changeKeyButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="Изменить ключ" />
+
+    </LinearLayout>
+
+</ScrollView>

app/src/main/res/layout/screen_appearance.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/themeSystemButton"
+        style="@style/Widget.Material3.Button.OutlinedButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/system_theme" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/themeLightButton"
+        style="@style/Widget.Material3.Button.OutlinedButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:text="@string/light_theme" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/themeDarkButton"
+        style="@style/Widget.Material3.Button.OutlinedButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:text="@string/dark_theme" />
+
+</LinearLayout>

app/src/main/res/layout/screen_base.xml

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/screenBaseContent"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:background="?attr/colorSurface">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="?attr/actionBarSize"
+        android:orientation="horizontal"
+        android:gravity="center_vertical"
+        android:paddingStart="4dp"
+        android:paddingEnd="8dp">
+
+        <ImageButton
+            android:id="@+id/screenBackButton"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:src="@drawable/ic_arrow_back"
+            android:contentDescription="@string/back" />
+
+        <TextView
+            android:id="@+id/screenTitle"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:layout_marginStart="8dp"
+            android:textSize="18sp"
+            android:textStyle="bold"
+            android:textColor="?attr/colorOnSurface" />
+
+    </LinearLayout>
+
+    <View
+        android:layout_width="match_parent"
+        android:layout_height="1dp"
+        android:background="?attr/colorOutlineVariant" />
+
+    <FrameLayout
+        android:id="@+id/screenContent"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+</LinearLayout>

app/src/main/res/layout/screen_clear_history.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/clear_history_message"
+        android:textSize="16sp"
+        android:textColor="?attr/colorOnSurface"
+        android:layout_marginBottom="24dp" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/clearSessionsButton"
+        style="@style/Widget.Material3.Button.TonalButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="Удалить сессии" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/clearAllButton"
+        style="@style/Widget.Material3.Button.TonalButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:text="Удалить всё (включая профили)"
+        android:textColor="?attr/colorError" />
+
+</LinearLayout>

app/src/main/res/layout/screen_profile_edit.xml

@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fillViewport="true">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="16dp">
+
+        <com.google.android.material.textfield.TextInputLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="@string/profile_name"
+            style="@style/Widget.Material3.TextInputLayout.OutlinedBox">
+
+            <com.google.android.material.textfield.TextInputEditText
+                android:id="@+id/profileNameInput"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="textPersonName" />
+
+        </com.google.android.material.textfield.TextInputLayout>
+
+        <com.google.android.material.textfield.TextInputLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:hint="@string/profile_bio"
+            style="@style/Widget.Material3.TextInputLayout.OutlinedBox">
+
+            <com.google.android.material.textfield.TextInputEditText
+                android:id="@+id/profileBioInput"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="textMultiLine"
+                android:minLines="3" />
+
+        </com.google.android.material.textfield.TextInputLayout>
+
+        <com.google.android.material.textfield.TextInputLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:hint="@string/profile_preferences"
+            style="@style/Widget.Material3.TextInputLayout.OutlinedBox">
+
+            <com.google.android.material.textfield.TextInputEditText
+                android:id="@+id/profilePreferencesInput"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:inputType="textMultiLine"
+                android:minLines="2" />
+
+        </com.google.android.material.textfield.TextInputLayout>
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/saveProfileButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="24dp"
+            android:text="@string/save" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/deleteProfileButton"
+            style="@style/Widget.Material3.Button.TextButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:text="@string/delete"
+            android:textColor="?attr/colorError"
+            android:visibility="gone" />
+
+    </LinearLayout>
+
+</ScrollView>

app/src/main/res/layout/screen_profiles.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/profilesList"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:scrollbars="vertical" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/addProfileButton"
+        style="@style/Widget.Material3.Button.TonalButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:text="@string/new_profile"
+        app:icon="@drawable/ic_add" />
+
+</LinearLayout>

app/src/main/res/layout/screen_session.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/sessionLastButton"
+        style="@style/Widget.Material3.Button.OutlinedButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/open_last_session" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/sessionNewButton"
+        style="@style/Widget.Material3.Button.OutlinedButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:text="@string/start_new_session" />
+
+</LinearLayout>

app/src/main/res/menu/drawer_menu.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/action_profiles"
+        android:title="@string/manage_profiles"
+        android:icon="@drawable/ic_person" />
+
+    <item
+        android:id="@+id/action_appearance"
+        android:title="@string/appearance_settings"
+        android:icon="@drawable/ic_settings" />
+
+    <item
+        android:id="@+id/action_session"
+        android:title="@string/session_settings"
+        android:icon="@drawable/ic_settings" />
+
+    <item
+        android:id="@+id/action_clear_all"
+        android:title="@string/clear_history"
+        android:icon="@drawable/ic_delete" />
+
+    <item
+        android:id="@+id/action_api_key"
+        android:title="@string/api_key"
+        android:icon="@drawable/ic_key" />
+
+    <item
+        android:id="@+id/action_about"
+        android:title="@string/about"
+        android:icon="@drawable/ic_info" />
+
+</menu>

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

@@ -42,11 +42,21 @@
     <string name="no_sessions">Нет сессий</string>
     <string name="ok">OK</string>
     <string name="profiles">Профили</string>
+    <string name="manage_profiles">Управление профилями</string>
     <string name="profiles_uppercase">ПРОФИЛИ</string>
     <string name="new_profile">Новый профиль</string>
-    <string name="manage_profiles">Управление профилями</string>
     <string name="edit">Редактировать</string>
     <string name="selected">Выбрано</string>
     <string name="clear_all_delete_profiles">Удалить все профили</string>
     <string name="profile_info">Профиль: %s</string>
+    <string name="appearance_settings">Внешний вид</string>
+    <string name="session_settings">Сессия при запуске</string>
+    <string name="clear_history">Очистить историю</string>
+    <string name="clear_history_message">Удалить все сессии и сообщения?</string>
+    <string name="open_last_session">Открывать последнюю сессию</string>
+    <string name="start_new_session">Начинать новую сессию</string>
+    <string name="light_theme">Светлая</string>
+    <string name="dark_theme">Тёмная</string>
+    <string name="back">Назад</string>
+    <string name="system_theme">Системная</string>
 </resources>