Change report download from JSON to PDF

- Add GenerateSingleReport() method to PdfReportService for individual CV reports
- PDF includes: score header, employment verification table, timeline analysis,
  gaps/overlaps sections, and color-coded flags (critical/warning/info)
- Update Report.razor to use PdfReportService instead of JSON serialization
- Add TrueCV.Web.Services to _Imports.razor

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

src/TrueCV.Web/Components/Pages/Report.razor

@@ -9,6 +9,7 @@
 @inject ILogger<Report> Logger
 @inject IJSRuntime JSRuntime
 @inject IAuditService AuditService
+@inject PdfReportService PdfReportService
 
 <PageTitle>Verification Report - TrueCV</PageTitle>
 
@@ -603,58 +604,11 @@
 
         try
         {
-            var reportData = new
-            {
-                CandidateName = _check.OriginalFileName,
-                GeneratedAt = _report.GeneratedAt,
-                OverallScore = _report.OverallScore,
-                ScoreLabel = _report.ScoreLabel,
-                EmploymentVerifications = _report.EmploymentVerifications.Select(v => new
-                {
-                    v.ClaimedCompany,
-                    ClaimedStartDate = v.ClaimedStartDate?.ToString("yyyy-MM"),
-                    ClaimedEndDate = v.ClaimedEndDate?.ToString("yyyy-MM"),
-                    v.MatchedCompanyName,
-                    v.MatchedCompanyNumber,
-                    v.MatchScore,
-                    v.IsVerified,
-                    v.VerificationNotes
-                }),
-                TimelineAnalysis = new
-                {
-                    _report.TimelineAnalysis.TotalGapMonths,
-                    _report.TimelineAnalysis.TotalOverlapMonths,
-                    Gaps = _report.TimelineAnalysis.Gaps.Select(g => new
-                    {
-                        StartDate = g.StartDate.ToString("yyyy-MM"),
-                        EndDate = g.EndDate.ToString("yyyy-MM"),
-                        g.Months
-                    }),
-                    Overlaps = _report.TimelineAnalysis.Overlaps.Select(o => new
-                    {
-                        o.Company1,
-                        o.Company2,
-                        OverlapStart = o.OverlapStart.ToString("yyyy-MM"),
-                        OverlapEnd = o.OverlapEnd.ToString("yyyy-MM"),
-                        o.Months
-                    })
-                },
-                Flags = _report.Flags.Select(f => new
-                {
-                    f.Severity,
-                    f.Title,
-                    f.Description,
-                    f.ScoreImpact
-                })
-            };
+            var candidateName = Path.GetFileNameWithoutExtension(_check.OriginalFileName);
+            var pdfBytes = PdfReportService.GenerateSingleReport(candidateName, _report);
 
-            var json = System.Text.Json.JsonSerializer.Serialize(reportData, new System.Text.Json.JsonSerializerOptions
-            {
-                WriteIndented = true
-            });
-
-            var fileName = $"TrueCV_Report_{Path.GetFileNameWithoutExtension(_check.OriginalFileName)}_{DateTime.Now:yyyyMMdd}.json";
-            await DownloadFileAsync(fileName, json, "application/json");
+            var fileName = $"TrueCV_Report_{candidateName}_{DateTime.Now:yyyyMMdd}.pdf";
+            await DownloadFileAsync(fileName, pdfBytes, "application/pdf");
         }
         catch (Exception ex)
         {
@@ -662,9 +616,8 @@
         }
     }
 
-    private async Task DownloadFileAsync(string fileName, string content, string contentType)
+    private async Task DownloadFileAsync(string fileName, byte[] bytes, string contentType)
     {
-        var bytes = System.Text.Encoding.UTF8.GetBytes(content);
         var base64 = Convert.ToBase64String(bytes);
         await JSRuntime.InvokeVoidAsync("downloadFile", fileName, base64, contentType);
     }