Fix FK violation on kiosk intake submission: set JobPriorityId

ProcessSubmissionAsync was creating a Job without JobPriorityId, leaving
it as 0 which violates the FK to JobPriorityLookups. Look up the NORMAL
priority the same way JobsController does everywhere else.

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

src/PowderCoating.Web/Controllers/KioskController.cs

@@ -586,10 +586,13 @@ public class KioskController : Controller
                                             : "RemoteIntake";
         }
 
-        // 3. Create Job in Pending status
+        // 3. Create Job in Pending status with Normal priority
-        var statuses     = await _lookupCache.GetJobStatusLookupsAsync(companyId);
+        var statuses      = await _lookupCache.GetJobStatusLookupsAsync(companyId);
         var pendingStatus = statuses.FirstOrDefault(s => s.StatusCode == AppConstants.StatusCodes.Job.Pending);
 
+        var priorities     = await _lookupCache.GetJobPriorityLookupsAsync(companyId);
+        var normalPriority = priorities.FirstOrDefault(p => p.PriorityCode == "NORMAL") ?? priorities.FirstOrDefault();
+
         var jobNumber = await GenerateJobNumberAsync(companyId);
         var job = new Job
         {
@@ -597,6 +600,7 @@ public class KioskController : Controller
             CustomerId          = customer!.Id,
             JobNumber           = jobNumber,
             JobStatusId         = pendingStatus?.Id ?? 1,
+            JobPriorityId       = normalPriority?.Id ?? 1,
             SpecialInstructions = session.JobDescription,
             Description         = $"Walk-in intake — {session.CustomerFirstName} {session.CustomerLastName}".Trim()
         };