feat: Display candidate name from CV data instead of filename

- Added CandidateName field to CVCheckDto
- Extract candidate name from ReportJson or ExtractedDataJson
- Dashboard now shows actual candidate name for JSON uploads
- PDF export uses candidate name from report

This fixes the issue where JSON files showed their filename (e.g.,
"CLEAN-001") instead of the actual candidate name from the CV data.

🤖 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

@@ -184,10 +184,38 @@ public sealed class CVCheckService : ICVCheckService
 
     private static CVCheckDto MapToDto(CVCheck cvCheck)
     {
+        string? candidateName = null;
+
+        // Try to get candidate name from ReportJson first (completed checks)
+        if (!string.IsNullOrEmpty(cvCheck.ReportJson))
+        {
+            try
+            {
+                var report = JsonSerializer.Deserialize<VeracityReport>(cvCheck.ReportJson, JsonDefaults.CamelCase);
+                candidateName = report?.CandidateName;
+            }
+            catch { /* Ignore deserialization errors */ }
+        }
+
+        // Fallback to ExtractedDataJson if no name in report
+        if (string.IsNullOrEmpty(candidateName) && !string.IsNullOrEmpty(cvCheck.ExtractedDataJson))
+        {
+            try
+            {
+                using var doc = JsonDocument.Parse(cvCheck.ExtractedDataJson);
+                if (doc.RootElement.TryGetProperty("fullName", out var nameElement))
+                {
+                    candidateName = nameElement.GetString();
+                }
+            }
+            catch { /* Ignore deserialization errors */ }
+        }
+
         return new CVCheckDto
         {
             Id = cvCheck.Id,
             OriginalFileName = cvCheck.OriginalFileName,
+            CandidateName = candidateName,
             Status = cvCheck.Status.ToString(),
             VeracityScore = cvCheck.VeracityScore,
             ProcessingStage = cvCheck.ProcessingStage,