feat: Refactor SearchResultsList component for improved loading and empty state handling

- Updated UI to use AnimatedVisibility for loading indicator and empty state message.
- Enhanced user feedback with a centered loading spinner and message during search.
- Improved layout and spacing for search results and user items.
- Adjusted colors and sizes for better visual consistency.

chore: Update gradle.properties to use new Java 17 path

- Changed Java home path to reflect new installation location.

docs: Add comprehensive README for project setup and development

- Included quick start instructions, available emulators, technologies used, and useful commands.
- Documented project structure and debugging tips.
- Added license information and contact details for the development team.

build: Add development scripts for quick rebuild and installation

- Created dev.sh for fast rebuild and install without cleaning.
- Added run.sh for a complete build and install process with emulator checks.
- Introduced watch-dev.sh for automatic rebuild on file changes.

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

@@ -8,7 +8,6 @@ import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.itemsIndexed
 import androidx.compose.foundation.shape.CircleShape
-import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Bookmark
 import androidx.compose.material3.*
@@ -22,205 +21,197 @@ import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import com.rosetta.messenger.network.SearchUser
-import com.rosetta.messenger.ui.onboarding.PrimaryBlue
 import com.rosetta.messenger.ui.components.VerifiedBadge
+import com.rosetta.messenger.ui.onboarding.PrimaryBlue
 
 /**
- * Компонент отображения результатов поиска пользователей
- * Аналогичен результатам поиска в React Native приложении
+ * Компонент отображения результатов поиска пользователей Аналогичен результатам поиска в React
+ * Native приложении
  */
 @Composable
 fun SearchResultsList(
-    searchResults: List<SearchUser>,
-    isSearching: Boolean,
-    currentUserPublicKey: String,
-    isDarkTheme: Boolean,
-    onUserClick: (SearchUser) -> Unit,
-    modifier: Modifier = Modifier
+        searchResults: List<SearchUser>,
+        isSearching: Boolean,
+        currentUserPublicKey: String,
+        isDarkTheme: Boolean,
+        onUserClick: (SearchUser) -> Unit,
+        modifier: Modifier = Modifier
 ) {
-    val backgroundColor = if (isDarkTheme) Color(0xFF2A2A2A) else Color.White
-    val borderColor = if (isDarkTheme) Color(0xFF3A3A3A) else Color(0xFFE8E8E8)
     val textColor = if (isDarkTheme) Color.White else Color.Black
     val secondaryTextColor = if (isDarkTheme) Color(0xFF8E8E93) else Color(0xFF666666)
-    
-    Column(
-        modifier = modifier
-            .fillMaxWidth()
-            .padding(horizontal = 16.dp)
-            .clip(RoundedCornerShape(bottomStart = 12.dp, bottomEnd = 12.dp))
-            .background(backgroundColor)
-    ) {
-        // Разделительная линия сверху
-        Divider(
-            color = borderColor,
-            thickness = 1.dp
-        )
-        
-        when {
-            isSearching -> {
-                // Индикатор загрузки
-                Box(
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .padding(vertical = 20.dp),
-                    contentAlignment = Alignment.Center
-                ) {
-                    CircularProgressIndicator(
-                        modifier = Modifier.size(24.dp),
+
+    Box(modifier = modifier.fillMaxSize()) {
+        AnimatedVisibility(
+                visible = isSearching,
+                enter = fadeIn(animationSpec = tween(durationMillis = 200)),
+                exit = fadeOut(animationSpec = tween(durationMillis = 200))
+        ) {
+            // Индикатор загрузки в центре
+            Column(
+                    modifier = Modifier.fillMaxSize(),
+                    horizontalAlignment = Alignment.CenterHorizontally,
+                    verticalArrangement = Arrangement.Center
+            ) {
+                CircularProgressIndicator(
+                        modifier = Modifier.size(32.dp),
                         color = if (isDarkTheme) Color(0xFF9E9E9E) else PrimaryBlue,
-                        strokeWidth = 2.dp
-                    )
-                }
+                        strokeWidth = 3.dp
+                )
+                Spacer(modifier = Modifier.height(16.dp))
+                Text(text = "Searching...", fontSize = 14.sp, color = secondaryTextColor)
             }
-            searchResults.isEmpty() -> {
-                // Пустые результаты - подсказка
-                Box(
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .padding(vertical = 20.dp),
-                    contentAlignment = Alignment.Center
-                ) {
-                    Text(
-                        text = "You can search by username or public key.",
-                        fontSize = 12.sp,
+        }
+
+        AnimatedVisibility(
+                visible = !isSearching && searchResults.isEmpty(),
+                enter = fadeIn(animationSpec = tween(durationMillis = 300)),
+                exit = fadeOut(animationSpec = tween(durationMillis = 200))
+        ) {
+            // Подсказка в центре экрана
+            Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+                Text(
+                        text = "Search by username or public key",
+                        fontSize = 15.sp,
                         color = secondaryTextColor
-                    )
-                }
+                )
             }
-            else -> {
-                // Список результатов
-                LazyColumn(
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .heightIn(max = 300.dp)
-                ) {
-                    itemsIndexed(searchResults) { index, user ->
-                        SearchResultItem(
+        }
+
+        AnimatedVisibility(
+                visible = !isSearching && searchResults.isNotEmpty(),
+                enter = fadeIn(animationSpec = tween(durationMillis = 300)),
+                exit = fadeOut(animationSpec = tween(durationMillis = 200))
+        ) {
+            // Список результатов без серой плашки
+            LazyColumn(modifier = Modifier.fillMaxSize()) {
+                itemsIndexed(searchResults) { index, user ->
+                    SearchResultItem(
                             user = user,
                             isOwnAccount = user.publicKey == currentUserPublicKey,
                             isDarkTheme = isDarkTheme,
                             isLastItem = index == searchResults.size - 1,
                             onClick = { onUserClick(user) }
-                        )
-                    }
+                    )
                 }
             }
         }
     }
 }
 
-/**
- * Элемент результата поиска - пользователь
- */
+/** Элемент результата поиска - пользователь */
 @Composable
 private fun SearchResultItem(
-    user: SearchUser,
-    isOwnAccount: Boolean,
-    isDarkTheme: Boolean,
-    isLastItem: Boolean,
-    onClick: () -> Unit
+        user: SearchUser,
+        isOwnAccount: Boolean,
+        isDarkTheme: Boolean,
+        isLastItem: Boolean,
+        onClick: () -> Unit
 ) {
     val textColor = if (isDarkTheme) Color.White else Color.Black
     val secondaryTextColor = if (isDarkTheme) Color(0xFF8E8E93) else Color(0xFF666666)
     val dividerColor = if (isDarkTheme) Color(0xFF3A3A3A) else Color(0xFFE8E8E8)
-    
+
     // Получаем цвета аватара
-    val avatarColors = getAvatarColor(
-        if (isOwnAccount) "SavedMessages" else (user.title.ifEmpty { user.publicKey }),
-        isDarkTheme
-    )
-    
+    val avatarColors =
+            getAvatarColor(
+                    if (isOwnAccount) "SavedMessages" else (user.title.ifEmpty { user.publicKey }),
+                    isDarkTheme
+            )
+
     Column {
         Row(
-            modifier = Modifier
-                .fillMaxWidth()
-                .clickable(onClick = onClick)
-                .padding(horizontal = 12.dp, vertical = 10.dp),
-            verticalAlignment = Alignment.CenterVertically
+                modifier =
+                        Modifier.fillMaxWidth()
+                                .clickable(onClick = onClick)
+                                .padding(horizontal = 16.dp, vertical = 12.dp),
+                verticalAlignment = Alignment.CenterVertically
         ) {
             // Аватар
             Box(
-                modifier = Modifier
-                    .size(40.dp)
-                    .clip(CircleShape)
-                    .background(if (isOwnAccount) PrimaryBlue else avatarColors.backgroundColor),
-                contentAlignment = Alignment.Center
+                    modifier =
+                            Modifier.size(48.dp)
+                                    .clip(CircleShape)
+                                    .background(
+                                            if (isOwnAccount) PrimaryBlue
+                                            else avatarColors.backgroundColor
+                                    ),
+                    contentAlignment = Alignment.Center
             ) {
                 if (isOwnAccount) {
                     Icon(
-                        Icons.Default.Bookmark,
-                        contentDescription = "Saved Messages",
-                        tint = Color.White,
-                        modifier = Modifier.size(20.dp)
+                            Icons.Default.Bookmark,
+                            contentDescription = "Saved Messages",
+                            tint = Color.White,
+                            modifier = Modifier.size(20.dp)
                     )
                 } else {
                     Text(
-                        text = if (user.title.isNotEmpty()) {
-                            getInitials(user.title)
-                        } else {
-                            user.publicKey.take(2).uppercase()
-                        },
-                        fontSize = 14.sp,
-                        fontWeight = FontWeight.Bold,
-                        color = avatarColors.textColor
+                            text =
+                                    if (user.title.isNotEmpty()) {
+                                        getInitials(user.title)
+                                    } else {
+                                        user.publicKey.take(2).uppercase()
+                                    },
+                            fontSize = 14.sp,
+                            fontWeight = FontWeight.Bold,
+                            color = avatarColors.textColor
                     )
                 }
             }
-            
+
             Spacer(modifier = Modifier.width(12.dp))
-            
+
             // Информация о пользователе
             Column(modifier = Modifier.weight(1f)) {
                 // Имя и значок верификации
                 Row(
-                    verticalAlignment = Alignment.CenterVertically,
-                    horizontalArrangement = Arrangement.spacedBy(4.dp)
+                        verticalAlignment = Alignment.CenterVertically,
+                        horizontalArrangement = Arrangement.spacedBy(4.dp)
                 ) {
                     Text(
-                        text = if (isOwnAccount) {
-                            "Saved Messages"
-                        } else {
-                            user.title.ifEmpty { user.publicKey.take(10) }
-                        },
-                        fontSize = 14.sp,
-                        fontWeight = FontWeight.SemiBold,
-                        color = textColor,
-                        maxLines = 1,
-                        overflow = TextOverflow.Ellipsis
+                            text =
+                                    if (isOwnAccount) {
+                                        "Saved Messages"
+                                    } else {
+                                        user.title.ifEmpty { user.publicKey.take(10) }
+                                    },
+                            fontSize = 16.sp,
+                            fontWeight = FontWeight.SemiBold,
+                            color = textColor,
+                            maxLines = 1,
+                            overflow = TextOverflow.Ellipsis
                     )
-                    
+
                     // Значок верификации
                     if (!isOwnAccount && user.verified > 0) {
-                        VerifiedBadge(
-                            verified = user.verified,
-                            size = 16
-                        )
+                        VerifiedBadge(verified = user.verified, size = 16)
                     }
                 }
-                
+
                 Spacer(modifier = Modifier.height(2.dp))
-                
+
                 // Юзернейм или публичный ключ
                 Text(
-                    text = if (isOwnAccount) {
-                        "Notes"
-                    } else {
-                        "@${user.username.ifEmpty { user.publicKey.take(10) + "..." }}"
-                    },
-                    fontSize = 12.sp,
-                    color = secondaryTextColor,
-                    maxLines = 1,
-                    overflow = TextOverflow.Ellipsis
+                        text =
+                                if (isOwnAccount) {
+                                    "Notes"
+                                } else {
+                                    "@${user.username.ifEmpty { user.publicKey.take(10) + "..." }}"
+                                },
+                        fontSize = 14.sp,
+                        color = secondaryTextColor,
+                        maxLines = 1,
+                        overflow = TextOverflow.Ellipsis
                 )
             }
         }
-        
+
         // Разделитель между элементами
         if (!isLastItem) {
             Divider(
-                modifier = Modifier.padding(start = 64.dp),
-                color = dividerColor,
-                thickness = 0.5.dp
+                    modifier = Modifier.padding(start = 80.dp),
+                    color = dividerColor,
+                    thickness = 0.5.dp
             )
         }
     }