fix: update PipelineProgress when job completes via essential_completed path

When a job completes via the essential_completed branch (all essential
processors done but some non-essential failed), the PipelineProgress
was not being updated to 100%, causing a discrepancy where the status
showed 'completed' but progress showed <100%.

Now PipelineProgress.mark_completed() is called in both completion paths.

src/worker/job_worker.rs

@@ -1977,6 +1977,11 @@ impl JobWorker {
 
             self.redis.delete_worker_job(uuid).await?;
 
+            // Update PipelineProgress to completed
+            let mut pp = PipelineProgress::new(uuid);
+            pp.mark_completed();
+            publish_pipeline_progress(self.redis.as_ref(), uuid, &pp).await;
+
             info!(
                 "Job {} completed with {} non-essential failures",
                 job_id,