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/ar/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": "مرحباً بك في Code Crispies - منصتك التفاعلية لتعلم تطوير الويب",
 	"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": "ابدأ",
+			"description": "<strong>Code Crispies</strong> منصة مجانية ومفتوحة المصدر لتعلم تطوير الويب من خلال التمارين العملية. لا حاجة لحساب!<br><br><strong>ما ستتعلمه:</strong><br>• <strong>HTML</strong> - العناصر الدلالية، النماذج، الجداول، SVG (<em>HTML كتلي وسطري</em>، <em>HTML النماذج</em>، <em>HTML الجداول</em>)<br>• <strong>CSS</strong> - المحددات، نموذج الصندوق، flexbox، الحركات (<em>CSS المحددات</em>، <em>CSS نموذج الصندوق</em>، <em>CSS Flexbox</em>)<br>• <strong>التصميم المتجاوب</strong> - استعلامات الوسائط وتخطيطات mobile-first<br><br><strong>كيف يعمل:</strong><br>1. اقرأ المهمة في اللوحة اليسرى<br>2. اكتب الكود في المحرر<br>3. شاهد النتائج مباشرة في المعاينة<br>4. احصل على ملاحظات فورية مع تلميحات<br><br><strong>اختصارات لوحة المفاتيح:</strong> <kbd>Ctrl+Z</kbd> تراجع، <kbd>Ctrl+Shift+Z</kbd> إعادة<br><br><strong>المزيد من الموارد:</strong><br>• <a href=\"https://nextlevelshit.github.io/html-over-js/\" target=\"_blank\">HTML over JS</a> - HTML الأصلي مقابل حلول JavaScript<br>• <a href=\"https://nextlevelshit.github.io/web-engineering-mandala/\" target=\"_blank\">Web Engineering Mandala</a> - خارطة تقنيات JavaScript",
+			"task": "اكتب <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": "اكتب <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": "نظرة عامة",
+			"description": "<strong>أنت جاهز!</strong> افتح القائمة (☰) لاستكشاف جميع الوحدات.<br><br><strong>مسار التعلم الموصى به:</strong><br>1. <em>HTML كتلي وسطري</em> - افهم عناصر الحاوية مقابل السطرية<br>2. <em>HTML النماذج</em> - أنشئ نماذج تفاعلية مع التحقق<br>3. <em>CSS المحددات</em> - استهدف العناصر بدقة<br>4. <em>CSS نموذج الصندوق</em> - أتقن padding، margin، borders<br>5. <em>CSS Flexbox</em> - أنشئ تخطيطات مرنة<br>6. <em>CSS الحركات</em> - أضف الحركة والانتقالات<br><br><strong>نصائح:</strong><br>• استخدم <em>إظهار المتوقع</em> لرؤية النتيجة المستهدفة<br>• يُحفظ تقدمك تلقائياً<br>• جرب Emmet في وضع HTML: <kbd>ul>li*3</kbd> + Tab<br><br><strong>مفتوح المصدر:</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>• صُنع بواسطة <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": "انقر التالي للمتابعة",
 			"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": "انقر التالي للمتابعة"
 				}
 			]
 		},