Set quote status to Converted and show job number link on quote details

- CreateJobFromQuote now sets QuoteStatusId to CONVERTED after creating the job
- Added ConvertedToJobNumber to QuoteDto, populated in Details action
- 'View Job' button on Quote Details now shows the job number (e.g. 'View Job JOB-2505-0001')

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/PowderCoating.Web/Controllers/QuotesController.cs

@@ -315,6 +315,7 @@ public class QuotesController : Controller
                 else
                 {
                     quoteDto.ConvertedToJobId = quote.ConvertedToJobId;
+                    quoteDto.ConvertedToJobNumber = linkedJob.JobNumber;
                 }
             }
             else
@@ -3164,9 +3165,14 @@ public class QuotesController : Controller
                 uniquePrepServiceIds.Count, job.JobNumber);
         }
 
-        // Update quote to track the conversion
+        // Update quote to track the conversion and mark it as converted
         quote.ConvertedToJobId = job.Id;
         quote.ConvertedDate = DateTime.UtcNow;
+        var companyIdForStatus = quote.CompanyId;
+        var quoteStatuses = await _lookupCache.GetQuoteStatusLookupsAsync(companyIdForStatus);
+        var convertedQuoteStatus = quoteStatuses.FirstOrDefault(s => s.StatusCode == "CONVERTED");
+        if (convertedQuoteStatus != null)
+            quote.QuoteStatusId = convertedQuoteStatus.Id;
         await _unitOfWork.SaveChangesAsync();
 
         // The interceptor just bumped quote.UpdatedAt as part of the ConvertedToJobId write.