Improve folder access admin dashboard

assets/js/main.js

@@ -153,10 +153,17 @@
 		exifDatas = {};
 
 	var imageExtensions = ['jpg', 'jpeg', 'png', 'gif', 'webp'];
+	var currentFolder = null;
 
-	function loadGallery() {
+	function loadGallery(folderName) {
+		currentFolder = folderName || null;
+		$main.empty();
+		var galleryUrl = '/images/fulls/';
+		if (currentFolder) {
+			galleryUrl += '?folder=' + encodeURIComponent(currentFolder);
+		}
 		$.ajax({
-			url: '/images/fulls/',
+			url: galleryUrl,
 			dataType: 'json',
 			cache: false,
 			success: function(files) {
@@ -296,6 +303,10 @@
 	// ==================== SELECTION MODE ====================
 
 	function initSelectionMode(allImages) {
+		$('#selection-toolbar').remove();
+		$('#select-mode-toggle').closest('li').remove();
+		$('.folder-download-btn').closest('li').remove();
+
 		var selectedImages = [];
 		var selectionActive = false;
 
@@ -481,6 +492,32 @@
 		});
 	}
 
+	function loadAvailableFolders() {
+		$.get('/api/folders/available').done(function(folders) {
+			renderFolderPicker(folders || []);
+		});
+	}
+
+	function renderFolderPicker(folders) {
+		$('#folder-picker-wrap').remove();
+		if (!folders.length) return;
+
+		var $item = $('<li id="folder-picker-wrap"></li>');
+		var $select = $('<select id="folder-picker" title="Galerie-Ordner waehlen"></select>');
+		$select.append($('<option></option>').val('').text('Oeffentliche Galerie'));
+		folders.forEach(function(folder) {
+			var label = folder.name + ' (' + (folder.image_count || 0) + ')';
+			$select.append($('<option></option>').val(folder.name).text(label));
+		});
+		$item.append($select);
+		$('#header nav > ul').prepend($item);
+
+		$select.on('change', function(e) {
+			e.preventDefault();
+			loadGallery($(this).val() || null);
+		});
+	}
+
 	// Galerie laden
 	loadGallery();
 
@@ -509,6 +546,7 @@
 		$('#login-username, #login-password, #login-submit').hide();
 		$('#logout-btn').show().css('display', 'inline-block');
 		$('#pw-change-section').show();
+		loadAvailableFolders();
 		if(u.role === 'admin') {
 		    $('#admin-link').html('<a href="/admin.html" class="button">Admin-Dashboard</a>');
 		}