Simplify lab trial dispatch and fix per-jaw pricing

lib/features/clinic/jobs/clinic_jobs_repository.dart

@@ -112,7 +112,11 @@ class ClinicJobsRepository {
   }
 
   Future<Job> approveAtClinic(String jobId, Job job, {String? note}) async {
-    final nextStep = job.nextStep;
+    if (job.status != JobStatus.inProgress ||
+        job.location != JobLocation.atClinic) {
+      throw StateError('Yalnızca klinikteki üretim işleri onaylanabilir.');
+    }
+    final nextStep = job.provaRequired ? job.currentStep : job.nextStep;
     if (nextStep == null) throw Exception('Bu aşamadan ileri gidilemez.');
 
     final record = await _pb.collection('jobs').update(jobId, body: {