fix: add job-level WS events so jobs show completed status

- Frontend: handleWsEvent now distinguishes host vs job events
  - Host events only update detail rows + optimistic counters
  - Job events (event_type=job) set authoritative status + counts
- Backend ws_relay: NotifyPayload now includes event_type field
  - Host events: event_type=host
  - update_parent_job_status fires pg_notify with event_type=job
- Backend job_executor: sync_job_status fires pg_notify with event_type=job
- Backend jobs cancel endpoint fires pg_notify with event_type=job
- Fixes jobs appearing stuck because host status was mapped to job status

crates/pm-worker/src/job_executor.rs

@@ -17,6 +17,7 @@ use std::sync::Arc;
 use chrono::{Duration as ChronoDuration, Utc};
 use pm_agent_client::{types::ApplyPatchesRequest, AgentClient};
 use pm_core::config::AppConfig;
+use serde_json::json;
 use sqlx::{FromRow, PgPool};
 use tokio::{sync::Semaphore, time};
 use uuid::Uuid;
@@ -840,6 +841,28 @@ async fn sync_job_status(pool: &PgPool, job_id: Uuid) {
         tracing::error!(%job_id, error = %e, "sync_job_status: failed to update parent job");
     }
 
+    // Fire job-level pg_notify so the frontend can update the job row.
+    let notify_payload = json!({
+        "event_type": "job",
+        "job_id": job_id.to_string(),
+        "host_id": "",
+        "status": new_status,
+        "succeeded_count": counts.succeeded_count,
+        "failed_count": counts.failed_count,
+        "host_count": counts.total_count,
+    });
+    if let Ok(payload_str) = serde_json::to_string(&notify_payload) {
+        if let Err(e) = sqlx::query("SELECT pg_notify('job_update', $1)")
+            .bind(&payload_str)
+            .execute(pool)
+            .await
+        {
+            tracing::error!(%job_id, error = %e, "sync_job_status: job-level pg_notify failed");
+        } else {
+            tracing::info!(%job_id, status = %new_status, "sync_job_status: job-level pg_notify sent");
+        }
+    }
+
     // Send email notifications for completed/failed jobs
     if set_completed {
         // Spawn email notification in background — non-blocking