fix(i18n): sync all lesson translations with English source

Synchronizes 72 lesson files across 5 languages (de, pl, es, ar, uk) to match
the English source. This ensures code, solutions, and validations are identical
while only title, description, task, and message fields are translated.

Changes include:
- Box model lessons (01-box-model.json)
- Units and variables (05-units-variables.json)
- Transitions and animations (06-transitions-animations.json)
- Responsive design (08-responsive.json)
- HTML elements (20-html-elements.json)
- HTML forms basic and validation (21, 22)
- HTML details/summary, progress/meter (23, 24)
- HTML datalist, dialog, fieldset (25, 27, 28)
- HTML tables and SVG (30, 32)
- HTML marquee (31)
- Welcome module (00-welcome.json)

Fixes validation inconsistencies and removes extra content that exceeded
English source. German translations were largely correct; Polish, Spanish,
Arabic, and Ukrainian required full translations.

lessons/pl/00-welcome.json

@@ -2,15 +2,15 @@
 	"$schema": "../../schemas/code-crispies-module-schema.json",
 	"id": "welcome",
 	"title": "Code Crispies",
-	"description": "Welcome to Code Crispies - your interactive web development learning platform",
+	"description": "Witaj w Code Crispies - twojej interaktywnej platformie do nauki tworzenia stron",
 	"mode": "html",
 	"difficulty": "beginner",
 	"lessons": [
 		{
 			"id": "get-started",
-			"title": "Get Started",
-			"description": "<strong>Code Crispies</strong> is a free, open-source platform for learning web development through hands-on exercises. No account required!<br><br><strong>What you'll learn:</strong><br>• <strong>HTML</strong> - Semantic elements, forms, tables, SVG (<em>HTML Block & Inline</em>, <em>HTML Forms</em>, <em>HTML Tables</em>)<br>• <strong>CSS</strong> - Selectors, box model, flexbox, animations (<em>CSS Selectors</em>, <em>CSS Box Model</em>, <em>CSS Flexbox</em>)<br>• <strong>Responsive Design</strong> - Media queries and mobile-first layouts<br><br><strong>How it works:</strong><br>1. Read the task in the left panel<br>2. Write code in the editor<br>3. See live results in the preview<br>4. Get instant feedback with hints<br><br><strong>Keyboard shortcuts:</strong> <kbd>Ctrl+Z</kbd> to undo, <kbd>Ctrl+Shift+Z</kbd> to redo<br><br><strong>More resources:</strong><br>• <a href=\"https://nextlevelshit.github.io/html-over-js/\" target=\"_blank\">HTML over JS</a> - Native HTML vs JavaScript solutions<br>• <a href=\"https://nextlevelshit.github.io/web-engineering-mandala/\" target=\"_blank\">Web Engineering Mandala</a> - JavaScript technology roadmap",
-			"task": "Write <code>Hello World</code>",
+			"title": "Rozpocznij",
+			"description": "<strong>Code Crispies</strong> to darmowa platforma open-source do nauki tworzenia stron przez praktyczne ćwiczenia. Konto nie jest wymagane!<br><br><strong>Czego się nauczysz:</strong><br>• <strong>HTML</strong> - Elementy semantyczne, formularze, tabele, SVG (<em>HTML Blokowe i Liniowe</em>, <em>HTML Formularze</em>, <em>HTML Tabele</em>)<br>• <strong>CSS</strong> - Selektory, model pudełkowy, flexbox, animacje (<em>CSS Selektory</em>, <em>CSS Model pudełkowy</em>, <em>CSS Flexbox</em>)<br>• <strong>Responsive Design</strong> - Media queries i układy mobile-first<br><br><strong>Jak to działa:</strong><br>1. Przeczytaj zadanie w lewym panelu<br>2. Napisz kod w edytorze<br>3. Zobacz wyniki na żywo w podglądzie<br>4. Otrzymaj natychmiastową informację zwrotną ze wskazówkami<br><br><strong>Skróty klawiszowe:</strong> <kbd>Ctrl+Z</kbd> cofnij, <kbd>Ctrl+Shift+Z</kbd> ponów<br><br><strong>Więcej zasobów:</strong><br>• <a href=\"https://nextlevelshit.github.io/html-over-js/\" target=\"_blank\">HTML over JS</a> - Natywny HTML vs rozwiązania JavaScript<br>• <a href=\"https://nextlevelshit.github.io/web-engineering-mandala/\" target=\"_blank\">Web Engineering Mandala</a> - Mapa technologii JavaScript",
+			"task": "Napisz <code>Hello World</code>",
 			"previewHTML": "",
 			"previewBaseCSS": "body { font-family: system-ui, sans-serif; padding: 20px; text-align: center; font-size: 2rem; color: #6366f1; font-weight: bold; }",
 			"sandboxCSS": "",
@@ -21,15 +21,15 @@
 				{
 					"type": "contains",
 					"value": "Hello World",
-					"message": "Write <code>Hello World</code>"
+					"message": "Napisz <code>Hello World</code>"
 				}
 			]
 		},
 		{
 			"id": "overview",
-			"title": "Overview",
-			"description": "<strong>You're ready!</strong> Open the menu (☰) to explore all modules.<br><br><strong>Recommended learning path:</strong><br>1. <em>HTML Block & Inline</em> - Understand container vs inline elements<br>2. <em>HTML Forms</em> - Build interactive forms with validation<br>3. <em>CSS Selectors</em> - Target elements precisely<br>4. <em>CSS Box Model</em> - Master padding, margin, borders<br>5. <em>CSS Flexbox</em> - Create flexible layouts<br>6. <em>CSS Animations</em> - Add motion and transitions<br><br><strong>Tips:</strong><br>• Use <em>Show Expected</em> to see the target result<br>• Your progress is saved automatically<br>• Try Emmet in HTML mode: <kbd>ul>li*3</kbd> + Tab<br><br><strong>Open Source:</strong><br>• <a href=\"https://git.librete.ch/public/code-crispies\" target=\"_blank\">Gitea (Source)</a> · <a href=\"https://github.com/nextlevelshit/code-crispies\" target=\"_blank\">GitHub (Mirror)</a><br>• Made by <a href=\"https://librete.ch\" target=\"_blank\">LibreTECH</a> · <a href=\"https://www.linkedin.com/in/michael-werner-czechowski\" target=\"_blank\">Michael Czechowski</a>",
-			"task": "Click Next to continue",
+			"title": "Przegląd",
+			"description": "<strong>Jesteś gotowy!</strong> Otwórz menu (☰) aby odkryć wszystkie moduły.<br><br><strong>Zalecana ścieżka nauki:</strong><br>1. <em>HTML Blokowe i Liniowe</em> - Zrozum elementy kontenerowe vs liniowe<br>2. <em>HTML Formularze</em> - Twórz interaktywne formularze z walidacją<br>3. <em>CSS Selektory</em> - Celuj w elementy precyzyjnie<br>4. <em>CSS Model pudełkowy</em> - Opanuj padding, margin, borders<br>5. <em>CSS Flexbox</em> - Twórz elastyczne układy<br>6. <em>CSS Animacje</em> - Dodaj ruch i przejścia<br><br><strong>Wskazówki:</strong><br>• Użyj <em>Pokaż oczekiwane</em> aby zobaczyć docelowy wynik<br>• Twój postęp jest zapisywany automatycznie<br>• Wypróbuj Emmet w trybie HTML: <kbd>ul>li*3</kbd> + Tab<br><br><strong>Open Source:</strong><br>• <a href=\"https://git.librete.ch/public/code-crispies\" target=\"_blank\">Gitea (Source)</a> · <a href=\"https://github.com/nextlevelshit/code-crispies\" target=\"_blank\">GitHub (Mirror)</a><br>• Stworzone przez <a href=\"https://librete.ch\" target=\"_blank\">LibreTECH</a> · <a href=\"https://www.linkedin.com/in/michael-werner-czechowski\" target=\"_blank\">Michael Czechowski</a>",
+			"task": "Kliknij Dalej aby kontynuować",
 			"previewHTML": "<p>Hello World! 🌍</p><p>Hallo Welt!</p><p>Bonjour le monde!</p><p>¡Hola Mundo!</p><p>Ciao Mondo!</p><p>Olá Mundo!</p><p>こんにちは世界!</p><p>你好世界!</p><p>안녕 세상!</p><p>Привет мир!</p><p dir=\"rtl\">שלום עולם!</p><p dir=\"rtl\">مرحبا بالعالم!</p>",
 			"previewBaseCSS": "body { font-family: system-ui, sans-serif; padding: 12px; } p { margin: 6px 0; padding: 6px 12px; border-radius: 6px; font-weight: 600; font-size: 0.95em; } p:nth-child(1) { background: #fef3c7; color: #92400e; font-size: 1.2em; } p:nth-child(2) { background: #dcfce7; color: #166534; } p:nth-child(3) { background: #dbeafe; color: #1e40af; } p:nth-child(4) { background: #fce7f3; color: #9d174d; } p:nth-child(5) { background: #e0e7ff; color: #4338ca; } p:nth-child(6) { background: #fef9c3; color: #854d0e; } p:nth-child(7) { background: #fee2e2; color: #991b1b; } p:nth-child(8) { background: #f3e8ff; color: #7c3aed; } p:nth-child(9) { background: #ccfbf1; color: #0f766e; } p:nth-child(10) { background: #fae8ff; color: #86198f; } p:nth-child(11) { background: #fef3c7; color: #b45309; } p:nth-child(12) { background: #d1fae5; color: #047857; }",
 			"sandboxCSS": "",
@@ -39,8 +39,8 @@
 			"validations": [
 				{
 					"type": "contains",
-					"value": "Hello World",
-					"message": "Click Next to continue"
+					"value": "Hello",
+					"message": "Kliknij Dalej aby kontynuować"
 				}
 			]
 		},