diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/FileDao.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/FileDao.kt
index d6be059..03960c0 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/FileDao.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/FileDao.kt
@@ -15,6 +15,9 @@ interface FileDao {
     @Query("SELECT * FROM files WHERE folder_resource_id = :folderResourceId AND \"exists\" = 1 ORDER BY name ASC")
     fun observeByFolder(folderResourceId: String): Flow<List<FileEntity>>
 
+    @Query("SELECT * FROM files WHERE folder_resource_id = :folderResourceId AND \"exists\" = 1 ORDER BY name ASC")
+    suspend fun getByFolderOnce(folderResourceId: String): List<FileEntity>
+
     @Query("SELECT * FROM files WHERE \"exists\" = 1 ORDER BY COALESCE(last_modified, added_at) DESC, name ASC")
     fun observeAllVisible(): Flow<List<FileEntity>>
 
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/FolderDao.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/FolderDao.kt
index 64d4ba6..f439105 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/FolderDao.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/FolderDao.kt
@@ -37,6 +37,10 @@ interface FolderDao {
     @Query("SELECT * FROM folders WHERE parent_resource_id = :parentResourceId ORDER BY name ASC")
     suspend fun getByParent(parentResourceId: String): List<FolderEntity>
 
+    /** Snapshot des sous-dossiers visibles (filtre `exists = 1`) — opérations batch hors UI. */
+    @Query("SELECT * FROM folders WHERE parent_resource_id = :parentResourceId AND \"exists\" = 1 ORDER BY name ASC")
+    suspend fun getByParentOnce(parentResourceId: String): List<FolderEntity>
+
     @Query("SELECT * FROM folders WHERE resource_id = :resourceId LIMIT 1")
     suspend fun getByResourceId(resourceId: String): FolderEntity?
 
@@ -52,6 +56,10 @@ interface FolderDao {
     @Query("UPDATE folders SET \"exists\" = 0, updated_at = :updatedAt WHERE resource_id = :resourceId")
     suspend fun markMissing(resourceId: String, updatedAt: Long)
 
+    /** Re-parente des sous-dossiers vers un nouveau parent (fusion). */
+    @Query("UPDATE folders SET parent_resource_id = :newParentId, updated_at = :updatedAt WHERE resource_id IN (:resourceIds)")
+    suspend fun reparent(resourceIds: List<String>, newParentId: String, updatedAt: Long)
+
     /**
      * Promote le placement après confirmation serveur (`POST /sync/ops` appliqué) :
      * `local-cloud` si une copie physique existe, sinon `cloud`. Idempotent.
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/PendingOperationDao.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/PendingOperationDao.kt
index 014dd69..e1c4332 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/PendingOperationDao.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/local/dao/PendingOperationDao.kt
@@ -56,6 +56,19 @@ interface PendingOperationDao {
     """)
     suspend fun countCreateOperations(resourceId: String): Int
 
+    /**
+     * Variante sans filtre `resource_type` : utilisée par la suppression de
+     * dossiers (les dossiers sont poussés à la découverte avec `resource_type =
+     * 'folder'`, pas `'file'`).
+     */
+    @Query("""
+        SELECT COUNT(*) FROM pending_operations
+        WHERE resource_id = :resourceId
+          AND operation = 'create_resource'
+          AND status IN ('pending', 'synced')
+    """)
+    suspend fun countCreateOperationsAnyType(resourceId: String): Int
+
     @Query("SELECT COUNT(*) FROM pending_operations WHERE status = 'pending'")
     suspend fun countPending(): Int
 
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FileRepository.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FileRepository.kt
index c9d692d..9ad9a80 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FileRepository.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FileRepository.kt
@@ -37,6 +37,10 @@ class FileRepository @Inject constructor(
     fun observeFiles(folderResourceId: String): Flow<List<FileEntity>> =
         fileDao.observeByFolder(folderResourceId)
 
+    /** Snapshot des fichiers visibles d'un dossier (opérations batch hors UI). */
+    suspend fun getFilesInFolder(folderResourceId: String): List<FileEntity> =
+        fileDao.getByFolderOnce(folderResourceId)
+
     /** Fichiers visibles de toute l'arborescence — écran d'accueil (grille par date). */
     fun observeAllVisible(): Flow<List<FileEntity>> = fileDao.observeAllVisible()
 
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FolderRepository.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FolderRepository.kt
index 497cb0b..86d1934 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FolderRepository.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/FolderRepository.kt
@@ -44,6 +44,10 @@ class FolderRepository @Inject constructor(
 
     suspend fun getAll(): List<FolderEntity> = folderDao.getAll()
 
+    /** Snapshot des sous-dossiers visibles d'un dossier (opérations batch hors UI). */
+    suspend fun getChildren(parentResourceId: String): List<FolderEntity> =
+        folderDao.getByParentOnce(parentResourceId)
+
     /** Dossiers créés dans l'app uniquement (cibles du picker de déplacement). */
     suspend fun getCreatedInApp(): List<FolderEntity> = folderDao.getCreatedInApp()
 
@@ -132,6 +136,25 @@ class FolderRepository @Inject constructor(
     /** Marque un dossier disparu de l'arborescence (`exists = 0`) — jamais supprimé. */
     suspend fun markMissing(resourceId: String, updatedAt: Long) =
         folderDao.markMissing(resourceId, updatedAt)
+
+    /**
+     * Re-parente des sous-dossiers vers un nouveau parent (fusion de dossiers).
+     * Transaction atomique : reparent Room + outbox `move_resource` par dossier.
+     */
+    suspend fun reparentSubFolders(resourceIds: List<String>, newParentId: String) {
+        if (resourceIds.isEmpty()) return
+        val now = System.currentTimeMillis()
+        appDatabase.withTransaction {
+            folderDao.reparent(resourceIds, newParentId, now)
+            for (resourceId in resourceIds) {
+                outboxRepository.enqueueMoveResource(
+                    resourceId = resourceId,
+                    resourceType = "folder",
+                    toFolderResourceId = newParentId,
+                )
+            }
+        }
+    }
 }
 
 data class SaveFolderInput(
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/OutboxRepository.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/OutboxRepository.kt
index 6791b07..cd1cc4e 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/OutboxRepository.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/data/repository/OutboxRepository.kt
@@ -149,6 +149,15 @@ class OutboxRepository @Inject constructor(
     suspend fun hasCreateOperation(resourceId: String): Boolean =
         pendingOperationDao.countCreateOperations(resourceId) > 0
 
+    /**
+     * Variante toutes ressources : un `create_resource` a-t-il jamais été
+     * journalisé pour ce dossier ? Un `delete_resource` n'est émis que si le
+     * serveur connaît déjà la ressource (les dossiers sont poussés à la
+     * découverte avec `resource_type = 'folder'`).
+     */
+    suspend fun hasCreateOperationAnyType(resourceId: String): Boolean =
+        pendingOperationDao.countCreateOperationsAnyType(resourceId) > 0
+
     /**
      * Un `move_resource` est-il encore en attente de push ? Tant que l'op est
      * pendante, le `folder_resource_id` local reflète la cible future : ni le
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/folderlist/FolderListScreen.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/folderlist/FolderListScreen.kt
index 9c9e407..9f9d8a7 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/folderlist/FolderListScreen.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/folderlist/FolderListScreen.kt
@@ -68,7 +68,9 @@ import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.vaultdrop.mobile.R
 import com.vaultdrop.mobile.data.local.entity.FileEntity
+import com.vaultdrop.mobile.data.local.entity.FileStatus
 import com.vaultdrop.mobile.data.local.entity.FolderEntity
+import com.vaultdrop.mobile.data.local.entity.FolderStatus
 import com.vaultdrop.mobile.features.connection.ConnectionStatusViewModel
 import com.vaultdrop.mobile.features.saf.safDisplayName
 import com.vaultdrop.mobile.features.sync.SyncViewModel
@@ -80,6 +82,7 @@ import com.vaultdrop.mobile.ui.components.FileCategoryIcon
 import com.vaultdrop.mobile.ui.components.FilePendingReviewBadge
 import com.vaultdrop.mobile.ui.components.FileSyncStatusIcon
 import com.vaultdrop.mobile.ui.components.FolderNameDialog
+
 import com.vaultdrop.mobile.ui.components.SelectionState
 import com.vaultdrop.mobile.ui.components.SelectionStatusIcon
 import com.vaultdrop.mobile.ui.components.ServerStatusBadge
@@ -87,6 +90,7 @@ import com.vaultdrop.mobile.ui.components.SyncStatusAction
 import com.vaultdrop.mobile.ui.components.rememberSelectionState
 import com.vaultdrop.mobile.ui.components.reviewDelete
 import com.vaultdrop.mobile.ui.navigation.FloatingNavBar
+import com.vaultdrop.mobile.ui.navigation.FolderSelectionNavBar
 import com.vaultdrop.mobile.ui.navigation.MoveTargetBar
 import com.vaultdrop.mobile.ui.navigation.NavTab
 import com.vaultdrop.mobile.ui.navigation.SelectionNavBar
@@ -116,6 +120,8 @@ fun FolderListScreen(
     var showDeleteConfirm by remember { mutableStateOf(false) }
     var pendingDeleteMode by remember { mutableStateOf<FileDeleter.DeleteMode?>(null) }
     var pendingDeleteReview by remember { mutableStateOf<DeleteReview?>(null) }
+    var pendingFolderIds by remember { mutableStateOf<List<String>>(emptyList()) }
+    var pendingFileIds by remember { mutableStateOf<List<String>>(emptyList()) }
     val snackbarHostState = remember { SnackbarHostState() }
 
     val createError = uiState.createError
@@ -261,29 +267,72 @@ fun FolderListScreen(
                         viewModel.moveSelectionHere(ids)
                     },
                 )
-                selection.active -> SelectionNavBar(
-                    onMove = { viewModel.startMove() },
-                    onBuildPdf = {
-                        val ids = selection.ids.toList()
-                        selection.clear()
-                        onBuildPdf(ids)
-                    },
-                    onDeleteModeSelected = { mode ->
-                        val allFiles = uiState.sections.flatMap { section ->
-                            section.rows.flatMap { row -> listOfNotNull(row.left, row.right) }
-                        }
-                        val selectedFiles = allFiles.filter { it.resourceId in selection.ids }
-                        val review = reviewDelete(selectedFiles, mode)
-                        pendingDeleteMode = mode
-                        pendingDeleteReview = review
-                        if (review.hasWarning) {
-                            showDeleteWarning = true
-                        } else {
-                            showDeleteConfirm = true
-                        }
-                    },
-                    enabled = selection.ids.isNotEmpty(),
-                )
+                selection.active -> if (uiState.view == HomeView.FOLDERS) {
+                    FolderSelectionNavBar(
+                        onDeleteModeSelected = { mode ->
+                            val selectedFolders = uiState.browseSubFolders.filter {
+                                it.resourceId in selection.ids
+                            }
+                            val selectedFiles = uiState.browseFiles.filter {
+                                it.resourceId in selection.ids
+                            }
+                            val incompatible = when (mode) {
+                                FileDeleter.DeleteMode.IN_CLOUD ->
+                                    selectedFolders.count { it.syncStatus == FolderStatus.LOCAL } +
+                                        selectedFiles.count { it.syncStatus == FileStatus.LOCAL }
+                                FileDeleter.DeleteMode.LOCALLY ->
+                                    selectedFolders.count { it.syncStatus == FolderStatus.CLOUD } +
+                                        selectedFiles.count { it.syncStatus == FileStatus.CLOUD }
+                                FileDeleter.DeleteMode.FULL ->
+                                    selectedFolders.count {
+                                        it.syncStatus == FolderStatus.LOCAL || it.syncStatus == FolderStatus.CLOUD
+                                    } + selectedFiles.count {
+                                        it.syncStatus == FileStatus.LOCAL || it.syncStatus == FileStatus.CLOUD
+                                    }
+                            }
+                            pendingFolderIds = selectedFolders.map { it.resourceId }
+                            pendingFileIds = selectedFiles.map { it.resourceId }
+                            pendingDeleteMode = mode
+                            pendingDeleteReview = DeleteReview(
+                                mode = mode,
+                                total = selectedFolders.size + selectedFiles.size,
+                                incompatibleCount = incompatible,
+                            )
+                            if (incompatible > 0) {
+                                showDeleteWarning = true
+                            } else {
+                                showDeleteConfirm = true
+                            }
+                        },
+                        deleteEnabled = selection.ids.isNotEmpty(),
+                    )
+                } else {
+                    SelectionNavBar(
+                        onMove = { viewModel.startMove() },
+                        onBuildPdf = {
+                            val ids = selection.ids.toList()
+                            selection.clear()
+                            onBuildPdf(ids)
+                        },
+                        onDeleteModeSelected = { mode ->
+                            val allFiles = uiState.sections.flatMap { section ->
+                                section.rows.flatMap { row -> listOfNotNull(row.left, row.right) }
+                            }
+                            val selectedFiles = allFiles.filter { it.resourceId in selection.ids }
+                            pendingFolderIds = emptyList()
+                            pendingFileIds = selectedFiles.map { it.resourceId }
+                            val review = reviewDelete(selectedFiles, mode)
+                            pendingDeleteMode = mode
+                            pendingDeleteReview = review
+                            if (review.hasWarning) {
+                                showDeleteWarning = true
+                            } else {
+                                showDeleteConfirm = true
+                            }
+                        },
+                        enabled = selection.ids.isNotEmpty(),
+                    )
+                }
                 else -> FloatingNavBar(selected = selectedTab, onSelect = onTabSelected)
             }
         },
@@ -341,26 +390,36 @@ fun FolderListScreen(
                 showDeleteWarning = false
                 pendingDeleteMode = null
                 pendingDeleteReview = null
+                pendingFolderIds = emptyList()
+                pendingFileIds = emptyList()
             },
         )
     }
 
     if (showDeleteConfirm && pendingDeleteMode != null) {
         DeleteConfirmDialog(
-            count = selection.ids.size,
+            count = pendingFolderIds.size + pendingFileIds.size,
             onConfirm = {
-                val ids = selection.ids.toList()
                 val mode = pendingDeleteMode!!
+                val fileIds = selection.ids.toList()
                 selection.clear()
                 showDeleteConfirm = false
                 pendingDeleteMode = null
                 pendingDeleteReview = null
-                viewModel.deleteSelectedFiles(ids, mode)
+                if (uiState.view == HomeView.FOLDERS) {
+                    viewModel.deleteFolderSelection(pendingFolderIds, pendingFileIds, mode)
+                } else {
+                    viewModel.deleteSelectedFiles(fileIds, mode)
+                }
+                pendingFolderIds = emptyList()
+                pendingFileIds = emptyList()
             },
             onDismiss = {
                 showDeleteConfirm = false
                 pendingDeleteMode = null
                 pendingDeleteReview = null
+                pendingFolderIds = emptyList()
+                pendingFileIds = emptyList()
             },
         )
     }
@@ -683,7 +742,11 @@ private fun FolderBrowserContent(
         }
 
         items(subFolders, key = { it.resourceId }) { folder ->
-            FolderRow(folder, onClick = { onOpenBrowseFolder(folder.resourceId) })
+            FolderRow(
+                folder = folder,
+                selection = selection,
+                onClick = { onOpenBrowseFolder(folder.resourceId) },
+            )
         }
 
         // En mode déplacement, le navigateur sert au choix de la cible : les
@@ -779,16 +842,29 @@ private fun SectionHeader(label: String) {
     )
 }
 
-/** Carte dossier de l'explorateur — descend d'un niveau au tap. */
+/** Carte dossier de l'explorateur — descend d'un niveau au tap, clic long pour la sélection. */
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
-private fun FolderRow(folder: FolderEntity, onClick: () -> Unit) {
+private fun FolderRow(
+    folder: FolderEntity,
+    selection: SelectionState,
+    onClick: () -> Unit,
+) {
+    val selected = folder.resourceId in selection.ids
     Card(
-        onClick = onClick,
         colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surfaceVariant),
         elevation = CardDefaults.cardElevation(defaultElevation = 1.dp),
         modifier = Modifier
             .fillMaxWidth()
-            .padding(bottom = 8.dp),
+            .padding(bottom = 8.dp)
+            .combinedClickable(
+                onClick = {
+                    if (selection.active) selection.toggle(folder.resourceId) else onClick()
+                },
+                onLongClick = {
+                    if (!selection.active) selection.start(folder.resourceId)
+                },
+            ),
     ) {
         Row(
             modifier = Modifier
@@ -816,6 +892,9 @@ private fun FolderRow(folder: FolderEntity, onClick: () -> Unit) {
                     color = MaterialTheme.colorScheme.onSurfaceVariant,
                 )
             }
+            if (selection.active) {
+                SelectionStatusIcon(selected = selected)
+            }
         }
     }
 }
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/folderlist/FolderListViewModel.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/folderlist/FolderListViewModel.kt
index e75a665..e576d61 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/folderlist/FolderListViewModel.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/folderlist/FolderListViewModel.kt
@@ -16,6 +16,7 @@ import com.vaultdrop.mobile.data.repository.FolderRepository
 import com.vaultdrop.mobile.data.repository.SaveFolderInput
 import com.vaultdrop.mobile.features.saf.FileMover
 import com.vaultdrop.mobile.features.saf.FileDeleter
+import com.vaultdrop.mobile.features.saf.FolderDeleter
 import com.vaultdrop.mobile.features.saf.SafFolderCreator
 import dagger.hilt.android.lifecycle.HiltViewModel
 import dagger.hilt.android.qualifiers.ApplicationContext
@@ -45,6 +46,7 @@ class FolderListViewModel @Inject constructor(
     private val safFolderCreator: SafFolderCreator,
     private val fileMover: FileMover,
     private val fileDeleter: FileDeleter,
+    private val folderDeleter: FolderDeleter,
     @ApplicationContext private val context: Context,
 ) : ViewModel() {
 
@@ -311,6 +313,30 @@ class FolderListViewModel @Inject constructor(
         _uiState.update { it.copy(deleteSuccess = false) }
     }
 
+    /**
+     * Suppression d'une sélection mixte de l'explorateur Dossiers (dossiers
+     * et/ou fichiers) selon le mode choisi. Les dossiers sont supprimés avec
+     * leur contenu récursif, les fichiers individuellement.
+     */
+    fun deleteFolderSelection(folderIds: List<String>, fileIds: List<String>, mode: FileDeleter.DeleteMode) {
+        viewModelScope.launch {
+            var failed = 0
+            val folders = folderIds.mapNotNull { folderRepository.getFolder(it) }
+            if (folders.isNotEmpty()) {
+                failed += folderDeleter.deleteFolders(folders, mode).failed
+            }
+            val files = fileIds.mapNotNull { fileRepository.getFile(it) }
+            if (files.isNotEmpty()) {
+                failed += fileDeleter.deleteFiles(files, mode).failed
+            }
+            if (failed > 0) {
+                _uiState.update { it.copy(deleteError = context.getString(R.string.delete_error)) }
+            } else {
+                _uiState.update { it.copy(deleteSuccess = true) }
+            }
+        }
+    }
+
     /** Grille d'accueil : tous les fichiers visibles, groupés par jour (date de référence). */
     private fun observeFiles() {
         viewModelScope.launch {
diff --git a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/navigation/FloatingNavBar.kt b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/navigation/FloatingNavBar.kt
index 66cc567..d414e4e 100644
--- a/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/navigation/FloatingNavBar.kt
+++ b/mobile-kotlin/app/src/main/java/com/vaultdrop/mobile/ui/navigation/FloatingNavBar.kt
@@ -180,6 +180,40 @@ fun SelectionNavBar(
     }
 }
 
+/** Barre d'actions multi-sélection propre aux dossiers : suppression. */
+@Composable
+fun FolderSelectionNavBar(
+    onDeleteModeSelected: (FileDeleter.DeleteMode) -> Unit,
+    deleteEnabled: Boolean,
+    modifier: Modifier = Modifier,
+) {
+    Box(
+        modifier = modifier
+            .fillMaxWidth()
+            .padding(start = 20.dp, end = 20.dp, bottom = 16.dp),
+        contentAlignment = Alignment.Center,
+    ) {
+        Surface(
+            shape = RoundedCornerShape(30.dp),
+            color = MaterialTheme.colorScheme.surface,
+            shadowElevation = 8.dp,
+            modifier = Modifier.widthIn(max = 400.dp).fillMaxWidth(),
+        ) {
+            Row(
+                modifier = Modifier.padding(vertical = 8.dp, horizontal = 8.dp),
+                horizontalArrangement = Arrangement.spacedBy(8.dp),
+                verticalAlignment = Alignment.CenterVertically,
+            ) {
+                DeleteDropdownButton(
+                    enabled = deleteEnabled,
+                    onModeSelected = onDeleteModeSelected,
+                    modifier = Modifier.weight(1f),
+                )
+            }
+        }
+    }
+}
+
 /** Barre du mode déplacement : bouton « Déplacer ici (N) » vers le dossier courant. */
 @Composable
 fun MoveTargetBar(
diff --git a/mobile-kotlin/app/src/main/res/values-en/strings.xml b/mobile-kotlin/app/src/main/res/values-en/strings.xml
index 3faf89b..2d2d4fc 100644
--- a/mobile-kotlin/app/src/main/res/values-en/strings.xml
+++ b/mobile-kotlin/app/src/main/res/values-en/strings.xml
@@ -109,6 +109,15 @@
     <string name="selection_count">%1$d selected</string>
     <string name="selection_assemble">Assemble PDF</string>
     <string name="selection_cancel">Cancel selection</string>
+
+    <!-- Folder merge (multi-select in the folder browser) -->
+    <string name="merge_folders">Merge</string>
+    <string name="merge_folders_title">Merge %1$d folder(s)</string>
+    <string name="merge_name_hint">e.g. important_documents</string>
+    <string name="merge_sources_label">Source folders — their content will be moved:</string>
+    <string name="merge_confirm">Merge</string>
+    <string name="merge_success">Folder(s) merged</string>
+    <string name="merge_error">Could not merge the folders</string>
     <string name="pdf_builder_title">Assemble a PDF</string>
     <string name="pdf_builder_empty">Nothing here yet. Add files or a note to start assembling.</string>
     <string name="pdf_builder_add_files">Add a file</string>
diff --git a/mobile-kotlin/app/src/main/res/values/strings.xml b/mobile-kotlin/app/src/main/res/values/strings.xml
index 4ce99fe..7244014 100644
--- a/mobile-kotlin/app/src/main/res/values/strings.xml
+++ b/mobile-kotlin/app/src/main/res/values/strings.xml
@@ -155,6 +155,15 @@
     <string name="selection_count">%1$d sélectionné(s)</string>
     <string name="selection_assemble">Assembler en PDF</string>
     <string name="selection_cancel">Annuler la sélection</string>
+
+    <!-- Fusion de dossiers (multi-sélection de l\'explorateur Dossiers) -->
+    <string name="merge_folders">Fusionner</string>
+    <string name="merge_folders_title">Fusionner %1$d dossier(s)</string>
+    <string name="merge_name_hint">ex. documents_importants</string>
+    <string name="merge_sources_label">Dossiers sources — leur contenu sera déplacé :</string>
+    <string name="merge_confirm">Fusionner</string>
+    <string name="merge_success">Dossier(s) fusionné(s)</string>
+    <string name="merge_error">Impossible de fusionner les dossiers</string>
     <string name="pdf_builder_title">Assembler un PDF</string>
     <string name="pdf_builder_empty">Aucun élément. Ajoute des fichiers ou une note pour commencer l\'assemblage.</string>
     <string name="pdf_builder_add_files">Ajouter un fichier</string>