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.Infrastructure/Services/CVCheckService.cs

@@ -185,17 +185,78 @@ public sealed class CVCheckService : ICVCheckService
 
         var fileName = cvCheck.OriginalFileName;
 
+        // GDPR: Delete the uploaded file if it still exists
+        if (!string.IsNullOrWhiteSpace(cvCheck.BlobUrl))
+        {
+            try
+            {
+                await _fileStorageService.DeleteAsync(cvCheck.BlobUrl);
+                _logger.LogDebug("Deleted file for CV check {CheckId}", checkId);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogWarning(ex, "Failed to delete file for CV check {CheckId}", checkId);
+                // Continue with deletion even if file deletion fails
+            }
+        }
+
         _dbContext.CVFlags.RemoveRange(cvCheck.Flags);
         _dbContext.CVChecks.Remove(cvCheck);
         await _dbContext.SaveChangesAsync();
 
-        _logger.LogInformation("Deleted CV check {CheckId} for user {UserId}", checkId, userId);
+        _logger.LogInformation("GDPR: Deleted CV check {CheckId} and associated data for user {UserId}", checkId, userId);
 
         await _auditService.LogAsync(userId, AuditActions.CVDeleted, "CVCheck", checkId, $"File: {fileName}");
 
         return true;
     }
 
+    public async Task<int> DeleteAllUserDataAsync(Guid userId)
+    {
+        _logger.LogInformation("GDPR: Deleting all CV data for user {UserId}", userId);
+
+        var userChecks = await _dbContext.CVChecks
+            .Include(c => c.Flags)
+            .Where(c => c.UserId == userId)
+            .ToListAsync();
+
+        if (userChecks.Count == 0)
+        {
+            _logger.LogDebug("No CV checks found for user {UserId}", userId);
+            return 0;
+        }
+
+        var deletedCount = 0;
+
+        foreach (var check in userChecks)
+        {
+            // Delete the file if it exists
+            if (!string.IsNullOrWhiteSpace(check.BlobUrl))
+            {
+                try
+                {
+                    await _fileStorageService.DeleteAsync(check.BlobUrl);
+                }
+                catch (Exception ex)
+                {
+                    _logger.LogWarning(ex, "Failed to delete file for CV check {CheckId}", check.Id);
+                }
+            }
+
+            _dbContext.CVFlags.RemoveRange(check.Flags);
+            _dbContext.CVChecks.Remove(check);
+            deletedCount++;
+        }
+
+        await _dbContext.SaveChangesAsync();
+
+        _logger.LogInformation("GDPR: Deleted {Count} CV checks for user {UserId}", deletedCount, userId);
+
+        await _auditService.LogAsync(userId, AuditActions.CVDeleted, null, null, $"Deleted all data: {deletedCount} checks");
+
+        return deletedCount;
+    }
+
     private static CVCheckDto MapToDto(CVCheck cvCheck)
     {
         return new CVCheckDto