style: address IDE warnings

Remove unused imports and an unused spacing constant, drop redundant if
checks and redundant opt-in markers, replace loop variables with
destructuring, convert a string concatenation to a template, use
Configuration.screenHeightDp instead of LocalWindowInfo.containerSize, and
opt in to ExperimentalSerializationApi for decodeFromStream.

app/src/main/java/com/example/research/common/util/NotificationHelper.kt

@@ -59,13 +59,12 @@ class NotificationHelper(private val context: Context) : NotificationPort {
         val manager = context.getSystemService(Context.NOTIFICATION_SERVICE) as? NotificationManager
         manager?.createNotificationChannel(channel)
     }
-    private fun canShowNotification(): Boolean {
+    private fun canShowNotification(): Boolean =
-        if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.TIRAMISU) return true
+        android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.TIRAMISU ||
-        return ContextCompat.checkSelfPermission(
+            ContextCompat.checkSelfPermission(
                 context,
                 android.Manifest.permission.POST_NOTIFICATIONS
             ) == android.content.pm.PackageManager.PERMISSION_GRANTED
-    }
     override fun showProgress(percent: Int, titleRes: Int) {
         showUnifiedProgressNotification(
             title = context.getString(titleRes),

app/src/main/java/com/example/research/data/parser/IndexSearcher.kt

@@ -454,11 +454,7 @@ class IndexSearcher(private val context: Context) {
         val originalWord = readPooledString(source, source.readUnsignedShort())
         val offset = ArticleOffset(source.readLong())
         val length = ArticleLength(source.readInt())
-        val isAlias = if (metadata.version >= 6) {
+        val isAlias = metadata.version >= 6 && source.readUnsignedByte() and ENTRY_FLAG_ALIAS != 0
-            source.readUnsignedByte() and ENTRY_FLAG_ALIAS != 0
-        } else {
-            false
-        }
         return IndexEntry(word, originalWord, offset, length, isAlias = isAlias)
     }
 
@@ -472,8 +468,11 @@ class IndexSearcher(private val context: Context) {
 
     private fun openSource(pathOrUri: String): RandomAccessSource {
         val file = File(pathOrUri)
-        if (!file.exists()) throw DictionaryError.FileSystemError.NotFound(pathOrUri)
+        return if (file.exists()) {
-        return FileSource(file)
+            FileSource(file)
+        } else {
+            throw DictionaryError.FileSystemError.NotFound(pathOrUri)
+        }
     }
     private fun openInputStream(pathOrUri: String): java.io.InputStream {
         val file = File(pathOrUri)

app/src/main/java/com/example/research/data/repository/KotlinDictionaryEngine.kt

@@ -112,20 +112,20 @@ class KotlinDictionaryEngine(private val context: Context) : ProgressIndexingEng
         maxResults: Int
     ): List<IndexEntry> = withContext(Dispatchers.IO) {
         val allResults = mutableListOf<IndexEntry>()
-        for (dict in dictionaries) {
+        for ((name, path, indexPath, _, _, metadata) in dictionaries) {
             try {
-                val indexPath = resolveIndexPath(dict.indexPath)
+                val resolvedIndexPath = resolveIndexPath(indexPath)
-                val entry = indexSearcher.findFirstEntry(indexPath, query)
+                val entry = indexSearcher.findFirstEntry(resolvedIndexPath, query)
                 if (entry != null) {
-                    allResults.add(entry.withDictionary(dict.metadata.name.ifBlank { dict.name }, dict.path))
+                    allResults.add(entry.withDictionary(metadata.name.ifBlank { name }, path))
                 }
                 if (allResults.size >= maxResults) break
             } catch (e: OutOfMemoryError) {
-                Log.e(TAG, "search() - OOM for ${dict.indexPath}", e)
+                Log.e(TAG, "search() - OOM for $indexPath", e)
                 trimMemory(80)
                 break
             } catch (e: Exception) {
-                Log.w(TAG, "search() - error for ${dict.indexPath}: ${e.message}")
+                Log.w(TAG, "search() - error for $indexPath: ${e.message}")
             }
         }
         allResults

app/src/main/java/com/example/research/data/repository/LocalDictionaryRepository.kt

@@ -538,12 +538,12 @@ class LocalDictionaryRepository(
             val dictionaries = mutableDictionaries.value
             if (dictionaries.isEmpty()) return@withContext
 
-            for (dict in dictionaries) {
+            for ((_, _, indexPath) in dictionaries) {
                 try {
-                    val indexPath = resolveIndexPath(dict.indexPath)
+                    val resolvedIndexPath = resolveIndexPath(indexPath)
                     val indexSearcher = engine.getIndexSearcher()
-                    if (!indexSearcher.isMetadataLoaded(indexPath)) {
+                    if (!indexSearcher.isMetadataLoaded(resolvedIndexPath)) {
-                        engine.preloadIndexMetadata(indexPath)
+                        engine.preloadIndexMetadata(resolvedIndexPath)
                     }
                     yield()
                 } catch (_: Exception) { /* Ignore preload failure */ }

app/src/main/java/com/example/research/feature/download/repository/DictionaryCleaner.kt

@@ -54,17 +54,17 @@ class DictionaryCleaner(
         for ((prefix, items) in parsedByPrefix) {
             val latestDsl = latestDslDateByPrefix[prefix] ?: continue
             val dslDates = dslDatesByPrefix[prefix].orEmpty()
-            for (item in items) {
+            for ((name, _, date, ext) in items) {
-                if (DateUtils.isDateBefore(item.date, latestDsl)) {
+                if (DateUtils.isDateBefore(date, latestDsl)) {
-                    toDelete.add(item.name)
+                    toDelete.add(name)
                     continue
                 }
-                if (item.ext in indexExtensions && item.date != latestDsl) {
+                if (ext in indexExtensions && date != latestDsl) {
-                    toDelete.add(item.name)
+                    toDelete.add(name)
                     continue
                 }
-                if (item.ext in indexExtensions && item.date !in dslDates) {
+                if (ext in indexExtensions && date !in dslDates) {
-                    toDelete.add(item.name)
+                    toDelete.add(name)
                 }
             }
         }

app/src/main/java/com/example/research/feature/download/repository/DictionaryExtractor.kt

@@ -46,14 +46,13 @@ class DictionaryExtractor(
                 reportProgress(processedIndex.toFloat() / totalFiles)
             }
 
-            for (file in gzFiles) {
+            for ((fileName, uri) in gzFiles) {
-                val fileName = file.name
                 val baseName = fileName.dropLast(DictionaryConfig.GZ_EXTENSION.length)
                 val lowerBaseName = baseName.lowercase()
                 if (baseName.isBlank() ||
                     lowerBaseName.endsWith(DictionaryConfig.GZ_EXTENSION) ||
                     lowerBaseName.endsWith(".txt")) {
-                    ArchiveUtils.deleteFile(context, file.uri)
+                    ArchiveUtils.deleteFile(context, uri)
                     markFileProcessed()
                     continue
                 }
@@ -65,19 +64,19 @@ class DictionaryExtractor(
                 val dslFileName = "$dslBaseName${DictionaryConfig.DSL_EXTENSION}"
                 val existingDslFile = fileStorageManager.findFile(folderUri, dslFileName)
                 if (existingDslFile != null && existingDslFile.exists()) {
-                    ArchiveUtils.deleteFile(context, file.uri)
+                    ArchiveUtils.deleteFile(context, uri)
                     markFileProcessed()
                     continue
                 }
                 val dslUri = fileStorageManager.createFileInFolder(folderUri, dslFileName, overwrite = false)
                     ?: continue
-                val extractResult = ArchiveUtils.extractGzWithBom(context, file.uri, dslUri)
+                val extractResult = ArchiveUtils.extractGzWithBom(context, uri, dslUri)
                 if (extractResult.isSuccess) {
                     val extractedFile = fileStorageManager.getDocumentFile(dslUri)
                     if (extractedFile != null && extractedFile.exists()) {
                         if (extractedFile.length() == 0L) {
                             ArchiveUtils.deleteFile(context, dslUri)
-                            ArchiveUtils.deleteFile(context, file.uri)
+                            ArchiveUtils.deleteFile(context, uri)
                             markFileProcessed()
                             continue
                         }
@@ -92,7 +91,7 @@ class DictionaryExtractor(
                             ArchiveUtils.deleteFile(context, dslUri)
                         }
                     }
-                    ArchiveUtils.deleteFile(context, file.uri)
+                    ArchiveUtils.deleteFile(context, uri)
                 } else {
                     Log.e("DictionaryExtractor", "File extraction error: $fileName")
                     ArchiveUtils.deleteFile(context, dslUri)
@@ -100,12 +99,11 @@ class DictionaryExtractor(
                 markFileProcessed()
             }
 
-            for (file in rawDslFiles) {
+            for ((dslFileName, uri) in rawDslFiles) {
-                val dslFileName = file.name
                 val dzFileName = "$dslFileName.dz"
                 val existingDz = fileStorageManager.findFile(folderUri, dzFileName)
                 if (existingDz != null && existingDz.exists()) {
-                    ArchiveUtils.deleteFile(context, file.uri)
+                    ArchiveUtils.deleteFile(context, uri)
                     markFileProcessed()
                     continue
                 }
@@ -113,11 +111,11 @@ class DictionaryExtractor(
                 val fileBaseProgress = processedIndex.toFloat() / totalFiles
                 val fileProgressWeight = 1f / totalFiles
                 reportProgress(fileBaseProgress)
-                val compressResult = ensureDslDictZip(file.uri, dslFileName, folderUri) { compressProgress ->
+                val compressResult = ensureDslDictZip(uri, dslFileName, folderUri) { compressProgress ->
                     reportProgress(fileBaseProgress + (compressProgress * fileProgressWeight))
                 }
                 if (compressResult.isSuccess) {
-                    ArchiveUtils.deleteFile(context, file.uri)
+                    ArchiveUtils.deleteFile(context, uri)
                 }
                 markFileProcessed()
             }
@@ -130,11 +128,10 @@ class DictionaryExtractor(
                     !lowerName.endsWith(DictionaryConfig.DICTZIP_EXTENSION) &&
                     !lowerName.endsWith(".dsl.gz")
             }
-            for (file in remainingRawDslFiles) {
+            for ((dslFileName, uri) in remainingRawDslFiles) {
-                val dslFileName = file.name
+                val compressResult = ensureDslDictZip(uri, dslFileName, folderUri, onProgress = null)
-                val compressResult = ensureDslDictZip(file.uri, dslFileName, folderUri, onProgress = null)
                 if (compressResult.isSuccess) {
-                    ArchiveUtils.deleteFile(context, file.uri)
+                    ArchiveUtils.deleteFile(context, uri)
                 }
             }
 
@@ -152,18 +149,18 @@ class DictionaryExtractor(
         try {
             withContext(Dispatchers.IO + NonCancellable) {
                 val files = fileStorageManager.listFilesInFolder(folderUri)
-                for (file in files) {
+                for ((name, uri) in files) {
-                    val n = file.name.lowercase()
+                    val n = name.lowercase()
                     val isRawDsl = n.endsWith(DictionaryConfig.DSL_EXTENSION) &&
                         !n.endsWith(DictionaryConfig.DICTZIP_EXTENSION) &&
                         !n.endsWith(".dsl.gz")
                     val isBareDz = n.endsWith(".dz") && !n.endsWith(DictionaryConfig.DICTZIP_EXTENSION)
                     when {
-                        isBareDz -> ArchiveUtils.deleteFile(context, file.uri)
+                        isBareDz -> ArchiveUtils.deleteFile(context, uri)
                         isRawDsl -> {
-                            val pair = fileStorageManager.findFile(folderUri, file.name + ".dz")
+                            val pair = fileStorageManager.findFile(folderUri, "$name.dz")
                             if (pair == null || !pair.exists()) {
-                                ArchiveUtils.deleteFile(context, file.uri)
+                                ArchiveUtils.deleteFile(context, uri)
                             }
                         }
                     }

app/src/main/java/com/example/research/feature/download/repository/DictionaryRepository.kt

@@ -144,9 +144,8 @@ class DictionaryRepository(
         if (filesToDelete.isNotEmpty()) {
             var deletedCount = 0
 
-            for (file in filesToDelete) {
+            for ((fileName, uri) in filesToDelete) {
-                val fileName = file.name
+                val docFile = fileStorageManager.getDocumentFile(uri)
-                val docFile = fileStorageManager.getDocumentFile(file.uri)
                 if (docFile != null && docFile.exists()) {
                     val deleted = docFile.delete()
                     if (deleted) {

app/src/main/java/com/example/research/ui/about/AboutLibrariesData.kt

@@ -2,6 +2,7 @@ package com.example.research.ui.about
 
 import android.content.Context
 import androidx.annotation.RawRes
+import kotlinx.serialization.ExperimentalSerializationApi
 import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.json.Json
@@ -75,6 +76,7 @@ internal object AboutLibrariesParser {
         ignoreUnknownKeys = true
     }
 
+    @OptIn(ExperimentalSerializationApi::class)
     fun read(context: Context, @RawRes resourceId: Int): AboutLibrariesData =
         context.resources.openRawResource(resourceId)
             .use { stream -> json.decodeFromStream(stream) }

app/src/main/java/com/example/research/ui/about/AboutScreen.kt

@@ -5,7 +5,6 @@ import androidx.compose.animation.core.animateFloatAsState
 import androidx.compose.animation.core.tween
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.ExperimentalLayoutApi
 import androidx.compose.foundation.layout.FlowRow
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
@@ -57,7 +56,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.withContext
 
-@OptIn(ExperimentalMaterial3Api::class, ExperimentalLayoutApi::class)
+@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun AboutScreen(
     onNavigateBack: () -> Unit
@@ -182,7 +181,6 @@ private fun AboutHeader(versionName: String) {
     }
 }
 
-@OptIn(ExperimentalLayoutApi::class)
 @Composable
 private fun AboutLibraryRow(
     modifier: Modifier = Modifier,

app/src/main/java/com/example/research/ui/article/ArticleScreen.kt

@@ -19,7 +19,6 @@ import androidx.compose.foundation.lazy.itemsIndexed
 import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.foundation.text.selection.SelectionContainer
 import androidx.compose.material3.Button
-import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Surface
@@ -349,7 +348,6 @@ fun ArticleTitleBar(
     }
 }
 
-@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 internal fun ArticleScreen(
     articleState: ArticleState?,

app/src/main/java/com/example/research/ui/main/MainScreen.kt

@@ -81,15 +81,11 @@ fun MainRoute(
 
     val showDictionaryName = remember(settingsState) {
         val activeDictionaries = settingsState.dictionaries.filter { it.isActive }
-        if (activeDictionaries.isEmpty()) {
-            false
-        } else {
         activeDictionaries.any { dict ->
             val fileName = dict.path.substringAfterLast("/")
             !DictionaryConfig.isDabkrsDictionary(fileName)
         }
     }
-    }
 
     BoxWithConstraints {
         val isWide = maxWidth >= 600.dp

app/src/main/java/com/example/research/ui/main/components/MainTopBar.kt

@@ -4,7 +4,6 @@ package com.example.research.ui.main.components
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.WindowInsetsSides
@@ -17,7 +16,6 @@ import androidx.compose.foundation.layout.only
 import androidx.compose.foundation.layout.offset
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
-import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.layout.windowInsetsPadding
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.foundation.text.KeyboardOptions
@@ -72,6 +70,7 @@ import com.example.research.ui.theme.Spacing
 import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.launch
 import kotlin.math.roundToInt
+import kotlin.time.Duration.Companion.milliseconds
 
 private val TopBarHeight = Spacing.topBarHeight
 private val TopBarShape = RoundedCornerShape(28.dp)
@@ -150,7 +149,7 @@ fun MainTopBar(
                 onShowHistory = {
                     focusManager.clearFocus(force = true)
                     coroutineScope.launch {
-                        withTimeoutOrNull(350) {
+                        withTimeoutOrNull(350.milliseconds) {
                             snapshotFlow { imeInsets.getBottom(density) > 0 }
                                 .first { visible -> !visible }
                         }
@@ -201,7 +200,6 @@ fun MainTopBar(
 }
 
 @Composable
-@OptIn(ExperimentalMaterial3Api::class)
 private fun SearchField(
     searchState: TextFieldState,
     enabled: Boolean,
@@ -308,17 +306,15 @@ private fun SearchHistorySheet(
 ) {
     val sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
     val density = LocalDensity.current
-    val configuration = LocalConfiguration.current
+    val screenHeight = LocalConfiguration.current.screenHeightDp.dp
     var frozenHeight by remember { mutableStateOf<Dp?>(null) }
     if (frozenHeight == null) {
         frozenHeight = if (isSearchBarAtBottom) {
-            configuration.screenHeightDp.dp -
+            screenHeight - HistorySheetChrome - with(density) {
-                HistorySheetChrome -
+                WindowInsets.navigationBars.getBottom(this).toDp()
-                with(density) { WindowInsets.navigationBars.getBottom(this).toDp() }
-        } else {
-            with(density) {
-                (configuration.screenHeightDp.dp.toPx() - topBarBottomPx).toDp()
             }
+        } else {
+            screenHeight - with(density) { topBarBottomPx.toDp() }
         }
     }
     val maxContentHeight = frozenHeight!!

app/src/main/java/com/example/research/ui/navigation/AppNavigation.kt

@@ -13,7 +13,6 @@ import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
-import androidx.compose.material3.adaptive.ExperimentalMaterial3AdaptiveApi
 import androidx.compose.material3.adaptive.currentWindowAdaptiveInfoV2
 import androidx.compose.runtime.*
 import androidx.compose.runtime.saveable.*
@@ -39,7 +38,6 @@ enum class Screen {
     Home, Settings, Article, About
 }
 
-@OptIn(ExperimentalMaterial3AdaptiveApi::class)
 @Composable
 fun AppNavigation(
     searchViewModel: SearchViewModel,

app/src/main/java/com/example/research/ui/settings/SettingsScreen.kt

@@ -57,7 +57,6 @@ import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.sync.Mutex
 
-@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun SettingsRoute(
     viewModel: SettingsViewModel,

app/src/main/java/com/example/research/ui/theme/Spacing.kt

@@ -6,7 +6,6 @@ object Spacing {
     // Semantic spacing constants for specific UI elements
     val topBarPadding = 8.dp
     val topBarHeight = 56.dp
-    val searchTextStart = 68.dp
     val listItemVertical = 8.dp
 
     val contentStart = 32.dp