feat: Add GDPR compliance and improve UI/UX

GDPR Compliance:
- Delete CV files immediately after processing
- Add DataRetentionJob to auto-purge data after 30 days
- Add DeleteAllUserDataAsync for right to erasure
- Add Privacy Policy page with GDPR information
- Add privacy link and GDPR badge to footer

UI/UX Improvements:
- Add "Why Choose RealCV" benefits section to homepage
- Fix pricing page: Professional card highlight, consistent button styles
- Improve text contrast on dark backgrounds (0.75 → 0.85 opacity)
- Fix auth page messaging consistency
- Fix CSS --realcv-accent variable (was self-referencing)

UK Terminology:
- Change "hiring" to "recruitment" throughout
- Change "bad hires" to "poor appointments"

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/RealCV.Web/Components/Pages/Account/Register.razor

@@ -97,9 +97,9 @@
 
             <p class="text-center text-muted small mb-4">
                 By creating an account, you agree to our
-                <a href="#" class="text-decoration-none">Terms of Service</a>
+                <a href="/privacy" class="text-decoration-none">Terms of Service</a>
                 and
-                <a href="#" class="text-decoration-none">Privacy Policy</a>
+                <a href="/privacy" class="text-decoration-none">Privacy Policy</a>
             </p>
 
             <div class="auth-divider">
@@ -123,9 +123,9 @@
                     <path d="M9.796 1.343c-.527-1.79-3.065-1.79-3.592 0l-.094.319a.873.873 0 0 1-1.255.52l-.292-.16c-1.64-.892-3.433.902-2.54 2.541l.159.292a.873.873 0 0 1-.52 1.255l-.319.094c-1.79.527-1.79 3.065 0 3.592l.319.094a.873.873 0 0 1 .52 1.255l-.16.292c-.892 1.64.901 3.434 2.541 2.54l.292-.159a.873.873 0 0 1 1.255.52l.094.319c.527 1.79 3.065 1.79 3.592 0l.094-.319a.873.873 0 0 1 1.255-.52l.292.16c1.64.893 3.434-.902 2.54-2.541l-.159-.292a.873.873 0 0 1 .52-1.255l.319-.094c1.79-.527 1.79-3.065 0-3.592l-.319-.094a.873.873 0 0 1-.52-1.255l.16-.292c.893-1.64-.902-3.433-2.541-2.54l-.292.159a.873.873 0 0 1-1.255-.52l-.094-.319zm-2.633.283c.246-.835 1.428-.835 1.674 0l.094.319a1.873 1.873 0 0 0 2.693 1.115l.291-.16c.764-.415 1.6.42 1.184 1.185l-.159.292a1.873 1.873 0 0 0 1.116 2.692l.318.094c.835.246.835 1.428 0 1.674l-.319.094a1.873 1.873 0 0 0-1.115 2.693l.16.291c.415.764-.42 1.6-1.185 1.184l-.291-.159a1.873 1.873 0 0 0-2.693 1.116l-.094.318c-.246.835-1.428.835-1.674 0l-.094-.319a1.873 1.873 0 0 0-2.692-1.115l-.292.16c-.764.415-1.6-.42-1.184-1.185l.159-.291A1.873 1.873 0 0 0 1.945 8.93l-.319-.094c-.835-.246-.835-1.428 0-1.674l.319-.094A1.873 1.873 0 0 0 3.06 4.377l-.16-.292c-.415-.764.42-1.6 1.185-1.184l.292.159a1.873 1.873 0 0 0 2.692-1.115l.094-.319z"/>
                 </svg>
             </div>
-            <h2 class="auth-brand-title">Start Your Free Trial</h2>
+            <h2 class="auth-brand-title">Create Your Free Account</h2>
             <p class="auth-brand-text">
-                Get 3 free CV verifications to experience the power of AI-driven credential analysis.
+                Get 3 free CV verifications per month. No credit card required.
             </p>
 
             <div class="auth-features">
@@ -157,7 +157,7 @@
 
             <div class="auth-testimonial">
                 <blockquote>
-                    "We reduced bad hires by 40% in the first quarter using RealCV."
+                    "We reduced unsuitable appointments by 40% in the first quarter using RealCV."
                 </blockquote>
                 <cite>- Recruitment Manager, Financial Services</cite>
             </div>