feat: add reset code confirmation dialog with skip option

- Add dialog to confirm resetting code to initial state
- Allow users to skip confirmation with "don't show again" checkbox
- Save preference to user settings
- Improve i18n and CodeEditor components

src/app.js

@@ -7,7 +7,8 @@ import { initI18n, t, getLanguage, setLanguage, applyTranslations } from "./i18n
 // Simplified state - LessonEngine now manages lesson state and progress
 const state = {
 	userSettings: {
-		disableFeedbackErrors: false
+		disableFeedbackErrors: false,
+		skipResetCodeConfirmation: false
 	},
 	showExpected: false
 };
@@ -62,7 +63,12 @@ const elements = {
 	resetDialog: document.getElementById("reset-dialog"),
 	resetDialogClose: document.getElementById("reset-dialog-close"),
 	cancelReset: document.getElementById("cancel-reset"),
-	confirmReset: document.getElementById("confirm-reset")
+	confirmReset: document.getElementById("confirm-reset"),
+	resetCodeDialog: document.getElementById("reset-code-dialog"),
+	resetCodeDialogClose: document.getElementById("reset-code-dialog-close"),
+	cancelResetCode: document.getElementById("cancel-reset-code"),
+	confirmResetCode: document.getElementById("confirm-reset-code"),
+	resetCodeDontShow: document.getElementById("reset-code-dont-show")
 };
 
 // Initialize the lesson engine - now the single source of truth
@@ -675,6 +681,35 @@ function handleResetConfirm() {
 	updateProgressDisplay();
 }
 
+function showResetCodeConfirmation() {
+	// Reset the checkbox state each time dialog is shown
+	elements.resetCodeDontShow.checked = false;
+	elements.resetCodeDialog.showModal();
+}
+
+function closeResetCodeDialog() {
+	elements.resetCodeDialog.close();
+}
+
+function handleResetCodeConfirm() {
+	// Save preference if checkbox is checked
+	if (elements.resetCodeDontShow.checked) {
+		state.userSettings.skipResetCodeConfirmation = true;
+		saveUserSettings();
+	}
+
+	closeResetCodeDialog();
+	resetCode();
+}
+
+function handleResetCodeClick() {
+	if (state.userSettings.skipResetCodeConfirmation) {
+		resetCode();
+	} else {
+		showResetCodeConfirmation();
+	}
+}
+
 // ================= INITIALIZATION =================
 
 function initCodeEditor() {
@@ -746,7 +781,7 @@ function init() {
 	elements.redoBtn.addEventListener("click", () => {
 		if (codeEditor) codeEditor.redo();
 	});
-	elements.resetCodeBtn.addEventListener("click", resetCode);
+	elements.resetCodeBtn.addEventListener("click", handleResetCodeClick);
 
 	// Dialogs
 	elements.helpBtn.addEventListener("click", showHelp);
@@ -761,6 +796,12 @@ function init() {
 	});
 	elements.cancelReset.addEventListener("click", closeResetDialog);
 	elements.confirmReset.addEventListener("click", handleResetConfirm);
+	elements.resetCodeDialogClose.addEventListener("click", closeResetCodeDialog);
+	elements.resetCodeDialog.addEventListener("click", (e) => {
+		if (e.target === elements.resetCodeDialog) closeResetCodeDialog();
+	});
+	elements.cancelResetCode.addEventListener("click", closeResetCodeDialog);
+	elements.confirmResetCode.addEventListener("click", handleResetCodeConfirm);
 
 	// Settings
 	elements.disableFeedbackToggle.addEventListener("change", (e) => {

src/config/lessons.js

@@ -19,6 +19,7 @@ import htmlTablesEN from "../../lessons/30-html-tables.json";
 import htmlMarqueeEN from "../../lessons/31-html-marquee.json";
 import htmlSvgEN from "../../lessons/32-html-svg.json";
 import flexboxEN from "../../lessons/flexbox.json";
+import goodbyeEN from "../../lessons/99-goodbye.json";
 
 // German lesson imports
 import welcomeDE from "../../lessons/de/00-welcome.json";
@@ -128,7 +129,9 @@ const moduleStoreEN = [
 	flexboxEN,
 	responsiveEN,
 	// CSS Animationen
-	transitionsAnimationsEN
+	transitionsAnimationsEN,
+	// Goodbye
+	goodbyeEN
 ];
 
 // German module store - ordered by learning path
@@ -154,7 +157,9 @@ const moduleStoreDE = [
 	flexboxDE,
 	responsiveDE,
 	// CSS Animationen
-	transitionsAnimationsDE
+	transitionsAnimationsDE,
+	// Goodbye
+	goodbyeEN
 ];
 
 // Polish module store - ordered by learning path
@@ -173,7 +178,8 @@ const moduleStorePL = [
 	unitsVariablesPL,
 	flexboxPL,
 	responsivePL,
-	transitionsAnimationsPL
+	transitionsAnimationsPL,
+	goodbyeEN
 ];
 
 // Spanish module store - ordered by learning path
@@ -192,7 +198,8 @@ const moduleStoreES = [
 	unitsVariablesES,
 	flexboxES,
 	responsiveES,
-	transitionsAnimationsES
+	transitionsAnimationsES,
+	goodbyeEN
 ];
 
 // Arabic module store - ordered by learning path
@@ -211,7 +218,8 @@ const moduleStoreAR = [
 	unitsVariablesAR,
 	flexboxAR,
 	responsiveAR,
-	transitionsAnimationsAR
+	transitionsAnimationsAR,
+	goodbyeEN
 ];
 
 // Ukrainian module store - ordered by learning path
@@ -230,7 +238,8 @@ const moduleStoreUK = [
 	unitsVariablesUK,
 	flexboxUK,
 	responsiveUK,
-	transitionsAnimationsUK
+	transitionsAnimationsUK,
+	goodbyeEN
 ];
 
 // Map of language codes to module stores

src/i18n.js

@@ -49,7 +49,8 @@ const translations = {
 		// Help dialog
 		helpTitle: "Help",
 		aboutTitle: "About Code Crispies",
-		aboutText: "Code Crispies is a free, open-source platform for learning web development through hands-on exercises. No account required - just start coding!",
+		aboutText:
+			"Code Crispies is a free, open-source platform for learning web development through hands-on exercises. No account required - just start coding!",
 		learningModesTitle: "Learning Modes",
 		modeCss: "<strong>CSS</strong> - Write CSS rules to style elements",
 		modeTailwind: "<strong>Tailwind</strong> - Apply utility classes directly in HTML",
@@ -84,7 +85,7 @@ const translations = {
 
 		// Contact
 		contactTitle: "Contact & Links",
-		contactText: "Code Crispies is developed by <a href=\"https://librete.ch\" target=\"_blank\">LibreTECH</a>",
+		contactText: 'Code Crispies is developed by <a href="https://librete.ch" target="_blank">LibreTECH</a>',
 
 		// Reset dialog
 		resetDialogTitle: "Reset Progress",
@@ -92,6 +93,12 @@ const translations = {
 		cancel: "Cancel",
 		resetAll: "Reset All",
 
+		// Reset code dialog
+		resetCodeDialogTitle: "Reset Code",
+		resetCodeDialogText: "Reset your code to the initial state for this lesson?",
+		dontShowAgain: "Don't show this again",
+		reset: "Reset",
+
 		// Dynamic content
 		loadingFallbackText: "Could not load lesson. Please select one from the menu or check the help.",
 		completed: "Completed",
@@ -149,13 +156,15 @@ const translations = {
 		// Help dialog
 		helpTitle: "Hilfe",
 		aboutTitle: "Über Code Crispies",
-		aboutText: "Code Crispies ist eine kostenlose Open-Source-Plattform zum Erlernen von Webentwicklung durch praktische Übungen. Kein Konto erforderlich - einfach loslegen!",
+		aboutText:
+			"Code Crispies ist eine kostenlose Open-Source-Plattform zum Erlernen von Webentwicklung durch praktische Übungen. Kein Konto erforderlich - einfach loslegen!",
 		learningModesTitle: "Lernmodi",
 		modeCss: "<strong>CSS</strong> - Schreibe CSS-Regeln zum Stylen von Elementen",
 		modeTailwind: "<strong>Tailwind</strong> - Wende Utility-Klassen direkt im HTML an",
 		modeHtml: "<strong>HTML</strong> - Übe semantisches Markup und native Elemente",
 		gettingStartedTitle: "Erste Schritte",
-		gettingStartedText: "Öffne das Menü (☰), um Lektionsmodule zu durchsuchen. Jedes Modul behandelt ein Thema mit aufeinander aufbauenden Übungen.",
+		gettingStartedText:
+			"Öffne das Menü (☰), um Lektionsmodule zu durchsuchen. Jedes Modul behandelt ein Thema mit aufeinander aufbauenden Übungen.",
 		completingLessonsTitle: "Lektionen abschließen",
 		completingStep1: "Lies die Aufgabenstellung auf der linken Seite",
 		completingStep2: "Schreibe deinen Code im Editor",
@@ -184,7 +193,7 @@ const translations = {
 
 		// Contact
 		contactTitle: "Kontakt & Links",
-		contactText: "Code Crispies wird von <a href=\"https://librete.ch\" target=\"_blank\">LibreTECH</a> entwickelt",
+		contactText: 'Code Crispies wird von <a href="https://librete.ch" target="_blank">LibreTECH</a> entwickelt',
 
 		// Reset dialog
 		resetDialogTitle: "Fortschritt zurücksetzen",
@@ -192,6 +201,12 @@ const translations = {
 		cancel: "Abbrechen",
 		resetAll: "Alles zurücksetzen",
 
+		// Reset code dialog
+		resetCodeDialogTitle: "Code zurücksetzen",
+		resetCodeDialogText: "Code auf den Anfangszustand dieser Lektion zurücksetzen?",
+		dontShowAgain: "Nicht mehr anzeigen",
+		reset: "Zurücksetzen",
+
 		// Dynamic content
 		loadingFallbackText: "Lektion konnte nicht geladen werden. Bitte wähle eine aus dem Menü oder prüfe die Hilfe.",
 		completed: "Erledigt",
@@ -250,7 +265,8 @@ const translations = {
 		// Help dialog
 		helpTitle: "Pomoc",
 		aboutTitle: "O Code Crispies",
-		aboutText: "Code Crispies to darmowa platforma open-source do nauki tworzenia stron internetowych poprzez praktyczne ćwiczenia. Nie wymaga konta - po prostu zacznij kodować!",
+		aboutText:
+			"Code Crispies to darmowa platforma open-source do nauki tworzenia stron internetowych poprzez praktyczne ćwiczenia. Nie wymaga konta - po prostu zacznij kodować!",
 		learningModesTitle: "Tryby nauki",
 		modeCss: "<strong>CSS</strong> - Pisz reguły CSS do stylizowania elementów",
 		modeTailwind: "<strong>Tailwind</strong> - Stosuj klasy utility bezpośrednio w HTML",
@@ -285,7 +301,7 @@ const translations = {
 
 		// Contact
 		contactTitle: "Kontakt i linki",
-		contactText: "Code Crispies jest rozwijany przez <a href=\"https://librete.ch\" target=\"_blank\">LibreTECH</a>",
+		contactText: 'Code Crispies jest rozwijany przez <a href="https://librete.ch" target="_blank">LibreTECH</a>',
 
 		// Reset dialog
 		resetDialogTitle: "Resetuj postęp",
@@ -293,6 +309,12 @@ const translations = {
 		cancel: "Anuluj",
 		resetAll: "Resetuj wszystko",
 
+		// Reset code dialog
+		resetCodeDialogTitle: "Resetuj kod",
+		resetCodeDialogText: "Przywrócić kod do stanu początkowego tej lekcji?",
+		dontShowAgain: "Nie pokazuj ponownie",
+		reset: "Resetuj",
+
 		// Dynamic content
 		loadingFallbackText: "Nie można załadować lekcji. Wybierz jedną z menu lub sprawdź pomoc.",
 		completed: "Ukończono",
@@ -351,13 +373,15 @@ const translations = {
 		// Help dialog
 		helpTitle: "Ayuda",
 		aboutTitle: "Acerca de Code Crispies",
-		aboutText: "Code Crispies es una plataforma gratuita de código abierto para aprender desarrollo web a través de ejercicios prácticos. No se requiere cuenta, ¡solo empieza a programar!",
+		aboutText:
+			"Code Crispies es una plataforma gratuita de código abierto para aprender desarrollo web a través de ejercicios prácticos. No se requiere cuenta, ¡solo empieza a programar!",
 		learningModesTitle: "Modos de aprendizaje",
 		modeCss: "<strong>CSS</strong> - Escribe reglas CSS para estilizar elementos",
 		modeTailwind: "<strong>Tailwind</strong> - Aplica clases de utilidad directamente en HTML",
 		modeHtml: "<strong>HTML</strong> - Practica marcado semántico y elementos nativos",
 		gettingStartedTitle: "Primeros pasos",
-		gettingStartedText: "Abre el menú (☰) para explorar los módulos de lecciones. Cada módulo cubre un tema específico con ejercicios progresivos.",
+		gettingStartedText:
+			"Abre el menú (☰) para explorar los módulos de lecciones. Cada módulo cubre un tema específico con ejercicios progresivos.",
 		completingLessonsTitle: "Completar lecciones",
 		completingStep1: "Lee las instrucciones de la tarea a la izquierda",
 		completingStep2: "Escribe tu código en el editor",
@@ -386,7 +410,7 @@ const translations = {
 
 		// Contact
 		contactTitle: "Contacto y enlaces",
-		contactText: "Code Crispies es desarrollado por <a href=\"https://librete.ch\" target=\"_blank\">LibreTECH</a>",
+		contactText: 'Code Crispies es desarrollado por <a href="https://librete.ch" target="_blank">LibreTECH</a>',
 
 		// Reset dialog
 		resetDialogTitle: "Reiniciar progreso",
@@ -394,6 +418,12 @@ const translations = {
 		cancel: "Cancelar",
 		resetAll: "Reiniciar todo",
 
+		// Reset code dialog
+		resetCodeDialogTitle: "Reiniciar código",
+		resetCodeDialogText: "¿Restaurar el código al estado inicial de esta lección?",
+		dontShowAgain: "No mostrar de nuevo",
+		reset: "Reiniciar",
+
 		// Dynamic content
 		loadingFallbackText: "No se pudo cargar la lección. Selecciona una del menú o consulta la ayuda.",
 		completed: "Completado",
@@ -487,7 +517,7 @@ const translations = {
 
 		// Contact
 		contactTitle: "التواصل والروابط",
-		contactText: "Code Crispies تم تطويره بواسطة <a href=\"https://librete.ch\" target=\"_blank\">LibreTECH</a>",
+		contactText: 'Code Crispies تم تطويره بواسطة <a href="https://librete.ch" target="_blank">LibreTECH</a>',
 
 		// Reset dialog
 		resetDialogTitle: "إعادة تعيين التقدم",
@@ -495,6 +525,12 @@ const translations = {
 		cancel: "إلغاء",
 		resetAll: "إعادة تعيين الكل",
 
+		// Reset code dialog
+		resetCodeDialogTitle: "إعادة تعيين الكود",
+		resetCodeDialogText: "استعادة الكود إلى الحالة الأولية لهذا الدرس؟",
+		dontShowAgain: "لا تظهر هذا مرة أخرى",
+		reset: "إعادة تعيين",
+
 		// Dynamic content
 		loadingFallbackText: "تعذر تحميل الدرس. اختر واحدًا من القائمة أو تحقق من المساعدة.",
 		completed: "مكتمل",
@@ -553,7 +589,8 @@ const translations = {
 		// Help dialog
 		helpTitle: "Допомога",
 		aboutTitle: "Про Code Crispies",
-		aboutText: "Code Crispies — це безкоштовна платформа з відкритим кодом для вивчення веб-розробки через практичні вправи. Обліковий запис не потрібен — просто починайте кодувати!",
+		aboutText:
+			"Code Crispies — це безкоштовна платформа з відкритим кодом для вивчення веб-розробки через практичні вправи. Обліковий запис не потрібен — просто починайте кодувати!",
 		learningModesTitle: "Режими навчання",
 		modeCss: "<strong>CSS</strong> - Пишіть правила CSS для стилізації елементів",
 		modeTailwind: "<strong>Tailwind</strong> - Застосовуйте утилітарні класи безпосередньо в HTML",
@@ -588,7 +625,7 @@ const translations = {
 
 		// Contact
 		contactTitle: "Контакти та посилання",
-		contactText: "Code Crispies розроблено <a href=\"https://librete.ch\" target=\"_blank\">LibreTECH</a>",
+		contactText: 'Code Crispies розроблено <a href="https://librete.ch" target="_blank">LibreTECH</a>',
 
 		// Reset dialog
 		resetDialogTitle: "Скинути прогрес",
@@ -596,6 +633,12 @@ const translations = {
 		cancel: "Скасувати",
 		resetAll: "Скинути все",
 
+		// Reset code dialog
+		resetCodeDialogTitle: "Скинути код",
+		resetCodeDialogText: "Відновити код до початкового стану цього уроку?",
+		dontShowAgain: "Більше не показувати",
+		reset: "Скинути",
+
 		// Dynamic content
 		loadingFallbackText: "Не вдалося завантажити урок. Виберіть один з меню або перевірте допомогу.",
 		completed: "Завершено",

src/impl/CodeEditor.js

@@ -12,19 +12,22 @@ import { autocompletion } from "@codemirror/autocomplete";
 import { abbreviationTracker, expandAbbreviation } from "@emmetio/codemirror6-plugin";
 
 // Custom overrides for One Dark theme
-const editorTheme = EditorView.theme({
+const editorTheme = EditorView.theme(
-	"&": {
+	{
-		height: "100%",
+		"&": {
-		fontSize: "14px"
+			height: "100%",
+			fontSize: "14px"
+		},
+		".cm-content": {
+			fontFamily: "'JetBrains Mono', 'Fira Code', monospace",
+			padding: "12px 0"
+		},
+		".cm-line": {
+			padding: "0 12px"
+		}
 	},
-	".cm-content": {
+	{ dark: true }
-		fontFamily: "'JetBrains Mono', 'Fira Code', monospace",
+);
-		padding: "12px 0"
-	},
-	".cm-line": {
-		padding: "0 12px"
-	}
-}, { dark: true });
 
 export class CodeEditor {
 	constructor(container, options = {}) {
@@ -55,19 +58,16 @@ export class CodeEditor {
 			// Emmet abbreviation tracking
 			abbreviationTracker(),
 			// High priority keymap for Emmet
-			Prec.highest(keymap.of([
+			Prec.highest(
-				{
+				keymap.of([
-					key: "Tab",
+					{
-					run: expandAbbreviation
+						key: "Tab",
-				}
+						run: expandAbbreviation
-			])),
+					}
+				])
+			),
 			// Standard keymaps including history (Ctrl+Z, Ctrl+Shift+Z)
-			keymap.of([
+			keymap.of([...historyKeymap, { key: "Tab", run: indentMore }, { key: "Shift-Tab", run: indentLess }, ...defaultKeymap]),
-				...historyKeymap,
-				{ key: "Tab", run: indentMore },
-				{ key: "Shift-Tab", run: indentLess },
-				...defaultKeymap
-			]),
 			autocompletion({
 				activateOnTyping: true,
 				maxRenderedOptions: 10

src/index.html

@@ -4,7 +4,10 @@
 		<meta charset="UTF-8" />
 		<link rel="icon" href="./favicon.ico" type="image/x-icon" />
 		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
-		<meta name="description" content="Code Crispies - Free, open-source platform for learning HTML and CSS through hands-on exercises. Master semantic markup, selectors, flexbox, animations and more." />
+		<meta
+			name="description"
+			content="Code Crispies - Free, open-source platform for learning HTML and CSS through hands-on exercises. Master semantic markup, selectors, flexbox, animations and more."
+		/>
 		<title>Code Crispies - Learn HTML & CSS Interactively</title>
 		<link rel="stylesheet" href="main.css" />
 	</head>
@@ -41,15 +44,20 @@
 									<div class="editor-tools">
 										<button id="undo-btn" class="btn btn-icon" data-i18n-title="undoTitle" title="Undo (Ctrl+Z)">↶</button>
 										<button id="redo-btn" class="btn btn-icon" data-i18n-title="redoTitle" title="Redo (Ctrl+Shift+Z)">↷</button>
-										<button id="reset-code-btn" class="btn btn-icon" data-i18n-title="resetCodeTitle" title="Reset to initial code">⟲</button>
+										<button
+											id="reset-code-btn"
+											class="btn btn-icon"
+											data-i18n-title="resetCodeTitle"
+											title="Reset to initial code"
+										>
+											⟲
+										</button>
 									</div>
-									<button id="run-btn" class="btn btn-run">
+									<button id="run-btn" class="btn btn-run"><img src="./gear.svg" alt="" /><span data-i18n="run">Run</span></button>
-										<img src="./gear.svg" alt="" /><span data-i18n="run">Run</span>
-									</button>
 								</div>
 							</div>
 							<div class="editor-content">
-								<textarea id="code-input" class="code-input" spellcheck="false" autocomplete="off" style="display: none;"></textarea>
+								<textarea id="code-input" class="code-input" spellcheck="false" autocomplete="off" style="display: none"></textarea>
 							</div>
 						</div>
 						<div class="hint-area" id="hint-area"></div>
@@ -142,7 +150,10 @@
 				</div>
 				<div class="dialog-content">
 					<h4 data-i18n="aboutTitle">About Code Crispies</h4>
-					<p data-i18n="aboutText">Code Crispies is a free, open-source platform for learning web development through hands-on exercises. No account required - just start coding!</p>
+					<p data-i18n="aboutText">
+						Code Crispies is a free, open-source platform for learning web development through hands-on exercises. No account required -
+						just start coding!
+					</p>
 
 					<h4 data-i18n="learningModesTitle">Learning Modes</h4>
 					<ul>
@@ -152,7 +163,9 @@
 					</ul>
 
 					<h4 data-i18n="gettingStartedTitle">Getting Started</h4>
-					<p data-i18n="gettingStartedText">Open the menu (☰) to browse lesson modules. Each module covers a specific topic with progressive exercises.</p>
+					<p data-i18n="gettingStartedText">
+						Open the menu (☰) to browse lesson modules. Each module covers a specific topic with progressive exercises.
+					</p>
 
 					<h4 data-i18n="completingLessonsTitle">Completing Lessons</h4>
 					<ol>
@@ -207,6 +220,26 @@
 				</div>
 			</dialog>
 
+			<!-- Reset Code Confirmation Dialog -->
+			<dialog id="reset-code-dialog" class="dialog">
+				<div class="dialog-header">
+					<h3 data-i18n="resetCodeDialogTitle">Reset Code</h3>
+					<button id="reset-code-dialog-close" class="dialog-close" aria-label="Close">&times;</button>
+				</div>
+				<div class="dialog-content">
+					<p data-i18n="resetCodeDialogText">Reset your code to the initial state for this lesson?</p>
+					<label class="toggle-switch" style="margin: 1rem 0">
+						<input type="checkbox" id="reset-code-dont-show" />
+						<span class="toggle-slider"></span>
+						<span class="toggle-label" data-i18n="dontShowAgain">Don't show this again</span>
+					</label>
+					<div class="dialog-actions">
+						<button id="cancel-reset-code" class="btn" data-i18n="cancel">Cancel</button>
+						<button id="confirm-reset-code" class="btn btn-ghost" data-i18n="reset">Reset</button>
+					</div>
+				</div>
+			</dialog>
+
 			<!-- Reset Confirmation Dialog -->
 			<dialog id="reset-dialog" class="dialog">
 				<div class="dialog-header">

src/main.css

@@ -98,7 +98,8 @@ body {
 	overflow: hidden;
 }
 
-code, kbd {
+code,
+kbd {
 	font-family: var(--font-code);
 }
 
@@ -272,8 +273,12 @@ code, kbd {
 }
 
 @keyframes fadeIn {
-	from { opacity: 0; }
+	from {
-	to { opacity: 1; }
+		opacity: 0;
+	}
+	to {
+		opacity: 1;
+	}
 }
 
 .module-pill {
@@ -656,7 +661,9 @@ code, kbd {
 	background: rgba(0, 0, 0, 0.4);
 	opacity: 0;
 	visibility: hidden;
-	transition: opacity 0.3s, visibility 0.3s;
+	transition:
+		opacity 0.3s,
+		visibility 0.3s;
 	z-index: 199;
 }
 
@@ -1054,7 +1061,6 @@ input:checked + .toggle-slider::before {
 	color: var(--text-color);
 }
 
-
 /* ================= DIALOG (Native HTML) ================= */
 .dialog {
 	border: none;