improved UI

composeApp/src/jvmMain/kotlin/net/sergeych/toread/BookPlatform.jvm.kt

@@ -3,13 +3,17 @@ package net.sergeych.toread
 import androidx.compose.ui.graphics.ImageBitmap
 import androidx.compose.ui.graphics.toComposeImageBitmap
 import net.sergeych.toread.fb2.Fb2Binary
-import net.sergeych.toread.storage.LibraryFileRecord
+import net.sergeych.toread.storage.BookReadingStatus
 import net.sergeych.toread.storage.ContentAnchor
+import net.sergeych.toread.storage.LibraryFileRecord
 import net.sergeych.toread.storage.ReadingStateRecord
 import net.sergeych.toread.storage.jdbc.H2LibraryDatabase
 import net.sergeych.toread.storage.jdbc.LibraryScanner
 import org.jetbrains.skia.Image
 import java.io.File
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
 import java.util.concurrent.atomic.AtomicBoolean
 import java.util.concurrent.TimeUnit
 import javax.swing.JFileChooser
@@ -129,6 +133,7 @@ actual suspend fun saveLibraryReadingPosition(fileId: String, position: ReadingP
     openLibraryDatabase().useLibrary { db ->
         val file = db.files.get(fileId) ?: return@useLibrary
         val clusterId = file.bodyClusterId ?: return@useLibrary
+        val now = System.currentTimeMillis()
         db.readingStates.upsert(
             ReadingStateRecord(
                 id = "state-$clusterId",
@@ -138,9 +143,16 @@ actual suspend fun saveLibraryReadingPosition(fileId: String, position: ReadingP
                     progress = position.itemIndex.toDouble(),
                     formatHintsJson = position.toFormatHintsJson(),
                 ),
-                updatedAt = System.currentTimeMillis(),
+                updatedAt = now,
             ),
         )
+        db.files.touchLastReadAt(fileId, now)
+    }
+}
+
+actual suspend fun markLibraryReadingStatus(fileId: String, status: BookReadingStatus): Boolean = withContext(Dispatchers.IO) {
+    openLibraryDatabase().useLibrary { db ->
+        db.files.updateReadingStatus(fileId, status)
     }
 }
 
@@ -249,6 +261,9 @@ actual fun watchPlatformDarkTheme(onChange: (Boolean) -> Unit): () -> Unit {
 
 actual fun libraryLogPath(): String? = libraryLogFile().absolutePath
 
+actual fun formatLibraryLastReadTime(millis: Long): String =
+    SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.getDefault()).format(Date(millis))
+
 private fun openLibraryDatabase(): H2LibraryDatabase {
     val libraryDir = File(System.getProperty("user.home"), ".toread/library")
     val dbDir = File(libraryDir, "db")
@@ -290,6 +305,8 @@ private fun LibraryFileRecord.toLibraryItem(): LibraryItem =
         sizeBytes = sizeBytes,
         storageUri = storageUri,
         lastSeenAt = lastSeenAt,
+        readingStatus = readingStatus,
+        lastReadAt = lastReadAt,
     )
 
 private fun libraryLogFile(): File =