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/Jobs/ProcessCVCheckJob.cs

@@ -265,6 +265,12 @@ public sealed class ProcessCVCheckJob
                 cvCheckId, score);
 
             await _auditService.LogAsync(cvCheck.UserId, AuditActions.CVProcessed, "CVCheck", cvCheckId, $"Score: {score}");
+
+            // GDPR: Delete the uploaded CV file immediately after processing
+            // We only need the extracted data and report, not the original file
+            await DeleteCVFileAsync(cvCheck.BlobUrl, cvCheckId);
+            cvCheck.BlobUrl = string.Empty; // Clear the URL as file no longer exists
+            await _dbContext.SaveChangesAsync(cancellationToken);
         }
         catch (Exception ex)
         {
@@ -287,6 +293,29 @@ public sealed class ProcessCVCheckJob
         }
     }
 
+    /// <summary>
+    /// GDPR: Safely delete the uploaded CV file after processing.
+    /// </summary>
+    private async Task DeleteCVFileAsync(string blobUrl, Guid cvCheckId)
+    {
+        if (string.IsNullOrWhiteSpace(blobUrl))
+        {
+            _logger.LogDebug("No file to delete for CV check {CheckId}", cvCheckId);
+            return;
+        }
+
+        try
+        {
+            await _fileStorageService.DeleteAsync(blobUrl);
+            _logger.LogInformation("GDPR: Deleted CV file for check {CheckId}", cvCheckId);
+        }
+        catch (Exception ex)
+        {
+            // Log but don't fail the job - file deletion is important but shouldn't break processing
+            _logger.LogWarning(ex, "Failed to delete CV file for check {CheckId}: {BlobUrl}", cvCheckId, blobUrl);
+        }
+    }
+
     private static (int Score, List<FlagResult> Flags) CalculateVeracityScore(
         List<CompanyVerificationResult> verifications,
         List<EducationVerificationResult> educationResults,