feat: Add camera button to MediaGrid for quick access

app/build.gradle.kts

@@ -120,6 +120,12 @@ dependencies {
     // Biometric authentication
     implementation("androidx.biometric:biometric:1.1.0")
 
+    // CameraX for camera preview
+    implementation("androidx.camera:camera-core:1.3.1")
+    implementation("androidx.camera:camera-camera2:1.3.1")
+    implementation("androidx.camera:camera-lifecycle:1.3.1")
+    implementation("androidx.camera:camera-view:1.3.1")
+
     // Baseline Profiles for startup performance
     implementation("androidx.profileinstaller:profileinstaller:1.3.1")
 

app/src/main/java/com/rosetta/messenger/ui/auth/UnlockScreen.kt

@@ -355,20 +355,6 @@ fun UnlockScreen(
             AnimatedVisibility(
                     visible = visible,
                     enter = fadeIn(tween(400)) + scaleIn(tween(400, easing = FastOutSlowInEasing))
-            ) {
-                Box(
-                    modifier = Modifier
-                        .size(120.dp)
-                        .clip(RoundedCornerShape(28.dp))
-                        .background(
-                            if (selectedAccount != null) {
-                                val colors = getAvatarColor(selectedAccount!!.publicKey, isDarkTheme)
-                                colors.backgroundColor
-                            } else {
-                                cardBackground
-                            }
-                        ),
-                    contentAlignment = Alignment.Center
             ) {
                 if (selectedAccount != null) {
                     val database = RosettaDatabase.getDatabase(context)
@@ -379,9 +365,17 @@ fun UnlockScreen(
                         publicKey = selectedAccount!!.publicKey,
                         avatarRepository = avatarRepository,
                         size = 120.dp,
-                            isDarkTheme = isDarkTheme
+                        isDarkTheme = isDarkTheme,
+                        shape = RoundedCornerShape(28.dp)
                     )
                 } else {
+                    Box(
+                        modifier = Modifier
+                            .size(120.dp)
+                            .clip(RoundedCornerShape(28.dp))
+                            .background(cardBackground),
+                        contentAlignment = Alignment.Center
+                    ) {
                         Text(
                             text = "?",
                             fontSize = 48.sp,

app/src/main/java/com/rosetta/messenger/ui/chats/components/MediaPickerBottomSheet.kt

@@ -30,10 +30,16 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.input.pointer.pointerInput
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalLifecycleOwner
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.compose.ui.viewinterop.AndroidView
+import androidx.camera.core.CameraSelector
+import androidx.camera.core.Preview
+import androidx.camera.lifecycle.ProcessCameraProvider
+import androidx.camera.view.PreviewView
 import androidx.core.content.ContextCompat
 import coil.compose.AsyncImage
 import coil.request.ImageRequest
@@ -112,10 +118,14 @@ fun MediaPickerBottomSheet(
             val permissions = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
                 arrayOf(
                     Manifest.permission.READ_MEDIA_IMAGES,
-                    Manifest.permission.READ_MEDIA_VIDEO
+                    Manifest.permission.READ_MEDIA_VIDEO,
+                    Manifest.permission.CAMERA
                 )
             } else {
-                arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE)
+                arrayOf(
+                    Manifest.permission.READ_EXTERNAL_STORAGE,
+                    Manifest.permission.CAMERA
+                )
             }
             
             hasPermission = permissions.all { 
@@ -211,10 +221,14 @@ fun MediaPickerBottomSheet(
                             val permissions = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
                                 arrayOf(
                                     Manifest.permission.READ_MEDIA_IMAGES,
-                                    Manifest.permission.READ_MEDIA_VIDEO
+                                    Manifest.permission.READ_MEDIA_VIDEO,
+                                    Manifest.permission.CAMERA
                                 )
                             } else {
-                                arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE)
+                                arrayOf(
+                                    Manifest.permission.READ_EXTERNAL_STORAGE,
+                                    Manifest.permission.CAMERA
+                                )
                             }
                             permissionLauncher.launch(permissions)
                         }
@@ -262,6 +276,10 @@ fun MediaPickerBottomSheet(
                     MediaGrid(
                         mediaItems = mediaItems,
                         selectedItems = selectedItems,
+                        onCameraClick = {
+                            onDismiss()
+                            onOpenCamera()
+                        },
                         onItemClick = { item ->
                             // Telegram-style: 
                             // - Первый клик по невыбранной фото → выбрать
@@ -465,6 +483,7 @@ private fun QuickActionButton(
 private fun MediaGrid(
     mediaItems: List<MediaItem>,
     selectedItems: Set<Long>,
+    onCameraClick: () -> Unit,
     onItemClick: (MediaItem) -> Unit,
     onItemLongClick: (MediaItem) -> Unit,
     isDarkTheme: Boolean,
@@ -480,6 +499,15 @@ private fun MediaGrid(
         horizontalArrangement = Arrangement.spacedBy(2.dp),
         verticalArrangement = Arrangement.spacedBy(2.dp)
     ) {
+        // 📷 Camera button as first item
+        item(key = "camera_button") {
+            CameraGridItem(
+                onClick = onCameraClick,
+                isDarkTheme = isDarkTheme
+            )
+        }
+        
+        // Media items
         items(
             items = mediaItems,
             key = { it.id }
@@ -498,6 +526,118 @@ private fun MediaGrid(
     }
 }
 
+/**
+ * 📷 Camera button in grid - first item with live preview
+ */
+@Composable
+private fun CameraGridItem(
+    onClick: () -> Unit,
+    isDarkTheme: Boolean
+) {
+    val context = LocalContext.current
+    val lifecycleOwner = LocalLifecycleOwner.current
+    val backgroundColor = if (isDarkTheme) Color(0xFF2C2C2E) else Color(0xFFF2F2F7)
+    
+    // Check if camera permission is granted - use mutableState for reactivity
+    var hasCameraPermission by remember { 
+        mutableStateOf(
+            ContextCompat.checkSelfPermission(
+                context,
+                Manifest.permission.CAMERA
+            ) == PackageManager.PERMISSION_GRANTED
+        )
+    }
+    
+    // Re-check permission when component becomes visible
+    LaunchedEffect(Unit) {
+        hasCameraPermission = ContextCompat.checkSelfPermission(
+            context,
+            Manifest.permission.CAMERA
+        ) == PackageManager.PERMISSION_GRANTED
+    }
+    
+    Box(
+        modifier = Modifier
+            .aspectRatio(1f)
+            .clip(RoundedCornerShape(4.dp))
+            .background(backgroundColor)
+            .clickable(onClick = onClick),
+        contentAlignment = Alignment.Center
+    ) {
+        if (hasCameraPermission) {
+            // Show live camera preview
+            AndroidView(
+                factory = { ctx ->
+                    val previewView = PreviewView(ctx).apply {
+                        scaleType = PreviewView.ScaleType.FILL_CENTER
+                    }
+                    
+                    val cameraProviderFuture = ProcessCameraProvider.getInstance(ctx)
+                    cameraProviderFuture.addListener({
+                        try {
+                            val cameraProvider = cameraProviderFuture.get()
+                            
+                            val preview = Preview.Builder().build().also {
+                                it.setSurfaceProvider(previewView.surfaceProvider)
+                            }
+                            
+                            // Use back camera
+                            val cameraSelector = CameraSelector.DEFAULT_BACK_CAMERA
+                            
+                            cameraProvider.unbindAll()
+                            cameraProvider.bindToLifecycle(
+                                lifecycleOwner,
+                                cameraSelector,
+                                preview
+                            )
+                        } catch (e: Exception) {
+                            // Camera init failed
+                        }
+                    }, ContextCompat.getMainExecutor(ctx))
+                    
+                    previewView
+                },
+                modifier = Modifier.fillMaxSize()
+            )
+            
+            // Camera icon overlay
+            Box(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .background(Color.Black.copy(alpha = 0.3f)),
+                contentAlignment = Alignment.Center
+            ) {
+                Icon(
+                    imageVector = TablerIcons.Camera,
+                    contentDescription = "Camera",
+                    tint = Color.White,
+                    modifier = Modifier.size(32.dp)
+                )
+            }
+        } else {
+            // No permission - show placeholder
+            Column(
+                horizontalAlignment = Alignment.CenterHorizontally,
+                verticalArrangement = Arrangement.Center
+            ) {
+                Icon(
+                    imageVector = TablerIcons.Camera,
+                    contentDescription = "Camera",
+                    tint = PrimaryBlue,
+                    modifier = Modifier.size(40.dp)
+                )
+                Spacer(modifier = Modifier.height(8.dp))
+                Text(
+                    text = "Camera",
+                    color = PrimaryBlue,
+                    fontSize = 12.sp,
+                    fontWeight = FontWeight.Medium
+                )
+            }
+        }
+    }
+}
+
 @Composable
 private fun MediaGridItem(
     item: MediaItem,

app/src/main/java/com/rosetta/messenger/ui/components/AvatarImage.kt

@@ -7,7 +7,9 @@ import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.ui.graphics.Shape
 import androidx.compose.material3.Text
 import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
@@ -44,6 +46,7 @@ import kotlinx.coroutines.withContext
  * @param onClick Обработчик клика (опционально)
  * @param showOnlineIndicator Показывать индикатор онлайн
  * @param isOnline Пользователь онлайн
+ * @param shape Форма аватара (по умолчанию круг)
  */
 @Composable
 fun AvatarImage(
@@ -53,7 +56,8 @@ fun AvatarImage(
     isDarkTheme: Boolean,
     onClick: (() -> Unit)? = null,
     showOnlineIndicator: Boolean = false,
-    isOnline: Boolean = false
+    isOnline: Boolean = false,
+    shape: Shape = CircleShape
 ) {
     // Получаем аватары из репозитория
     val avatars by avatarRepository?.getAvatars(publicKey, allDecode = false)?.collectAsState() 
@@ -85,7 +89,7 @@ fun AvatarImage(
     Box(
         modifier = Modifier
             .size(size)
-            .clip(CircleShape)
+            .clip(shape)
             .then(
                 if (onClick != null) {
                     Modifier.clickable(onClick = onClick)
@@ -113,7 +117,8 @@ fun AvatarImage(
             AvatarPlaceholder(
                 publicKey = publicKey,
                 size = size,
-                isDarkTheme = isDarkTheme
+                isDarkTheme = isDarkTheme,
+                shape = shape
             )
         }
         
@@ -137,7 +142,8 @@ fun AvatarPlaceholder(
     publicKey: String,
     size: Dp = 40.dp,
     isDarkTheme: Boolean,
-    fontSize: TextUnit? = null
+    fontSize: TextUnit? = null,
+    shape: Shape = CircleShape
 ) {
     val avatarColors = getAvatarColor(publicKey, isDarkTheme)
     val avatarText = getAvatarText(publicKey)
@@ -145,7 +151,7 @@ fun AvatarPlaceholder(
     Box(
         modifier = Modifier
             .size(size)
-            .clip(CircleShape)
+            .clip(shape)
             .background(avatarColors.backgroundColor),
         contentAlignment = Alignment.Center
     ) {