feat(i18n): Internationalize marketing pages and components

- HomePage.tsx: Add translation keys for features, testimonials, section titles
- FeaturesPage.tsx: Add translation keys for automation engine, multi-tenancy sections
- Hero.tsx: Add translation keys for headline, CTAs, trust signals, visual content
- ContactPage.tsx: Add translation keys for form headings, success messages
- PricingPage.tsx: Add translation keys for FAQ section
- PrivacyPolicyPage.tsx: Full internationalization of 15-section privacy policy
- TermsOfServicePage.tsx: Full internationalization of 16-section terms of service
- Footer.tsx & Navbar.tsx: Add translation keys for brand name, aria-labels

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/pages/marketing/PricingPage.tsx

@@ -12,10 +12,10 @@ const PricingPage: React.FC = () => {
       {/* Header */}
       <div className="pt-24 pb-12 text-center px-4 sm:px-6 lg:px-8">
         <h1 className="text-4xl font-bold text-gray-900 dark:text-white mb-4">
-          Simple, Transparent Pricing
+          {t('marketing.pricing.title')}
         </h1>
         <p className="text-xl text-gray-600 dark:text-gray-400 max-w-2xl mx-auto">
-          Start for free, upgrade as you grow. No hidden fees.
+          {t('marketing.pricing.subtitle')}
         </p>
       </div>
 
@@ -27,24 +27,24 @@ const PricingPage: React.FC = () => {
       {/* FAQ Section */}
       <div className="max-w-3xl mx-auto px-4 sm:px-6 lg:px-8 pb-20">
         <h2 className="text-3xl font-bold text-center text-gray-900 dark:text-white mb-12">
-          Frequently Asked Questions
+          {t('marketing.pricing.faq.title')}
         </h2>
         <FAQAccordion items={[
           {
-            question: "Do I need to know Python to use SmoothSchedule?",
-            answer: "Not at all! You can use our pre-built plugins from the marketplace for common tasks like email reminders and reports. Python is only needed if you want to write custom scripts."
+            question: t('marketing.pricing.faq.needPython.question'),
+            answer: t('marketing.pricing.faq.needPython.answer')
           },
           {
-            question: "What happens if I exceed my plan's limits?",
-            answer: "We'll notify you when you're close to your limit. If you exceed it, we'll give you a grace period to upgrade. We won't cut off your service immediately."
+            question: t('marketing.pricing.faq.exceedLimits.question'),
+            answer: t('marketing.pricing.faq.exceedLimits.answer')
           },
           {
-            question: "Can I use my own domain name?",
-            answer: "Yes! On the Pro and Business plans, you can connect your own custom domain (e.g., booking.yourcompany.com) for a fully branded experience."
+            question: t('marketing.pricing.faq.customDomain.question'),
+            answer: t('marketing.pricing.faq.customDomain.answer')
           },
           {
-            question: "Is my data safe?",
-            answer: "Absolutely. We use dedicated secure vaults (Postgres schemas) to physically isolate your data from other customers. It's the gold standard for multi-tenant security."
+            question: t('marketing.pricing.faq.dataSafety.question'),
+            answer: t('marketing.pricing.faq.dataSafety.answer')
           }
         ]} />
       </div>