fix(events): close review gaps found in the follow-up sweep

- deletion flow emitted job/instance envelopes before the transaction that
  closed the job rows; subscribers refetching on the notification saw
  status 'running' with no further event. Emits now happen after commit,
  including the failure path
- interrupted-deletion sweep now emits job envelopes with the job's real
  request_id (it previously stayed silent while the secure-execution sweep
  already emitted)
- verified during the sweep: backup restore validation re-derives the
  expected schema via migrateDatabase, so migration 18 is automatically
  covered; no tables reference audit_events or operation_preparations, so
  the retention deletes cannot trip FK constraints

apps/api/src/application/operations/delete-instance-operation.ts

@@ -328,14 +328,6 @@ export class DeleteInstanceOperation {
     }
     try {
       await this.instances.delete(input.instanceId, input.revision, { allowJobHistory: true });
-      this.#emit({
-        kind: 'instance',
-        id: this.id(),
-        occurredAt: this.clock().toISOString(),
-        requestId: input.requestId,
-        instanceId: input.instanceId,
-      });
-      this.#emitJob(ids.job, input.requestId);
       const finished = this.clock().toISOString();
       this.db.transaction(() => {
         this.db
@@ -356,6 +348,16 @@ export class DeleteInstanceOperation {
           )
           .run(finished, finished, ids.job);
       })();
+      // Events only after the terminal rows are committed, so a subscriber that
+      // refetches on the notification sees the finished job, not 'running'.
+      this.#emit({
+        kind: 'instance',
+        id: this.id(),
+        occurredAt: this.clock().toISOString(),
+        requestId: input.requestId,
+        instanceId: input.instanceId,
+      });
+      this.#emitJob(ids.job, input.requestId);
     } catch (error) {
       const finished = this.clock().toISOString();
       const state = error instanceof InstanceServiceError ? 'failed' : 'unknown-result';
@@ -375,6 +377,7 @@ export class DeleteInstanceOperation {
           .prepare('UPDATE jobs SET status=?,finished_at=?,updated_at=? WHERE id=?')
           .run(state, finished, finished, ids.job);
       })();
+      this.#emitJob(ids.job, input.requestId);
     }
     return this.job(ids.job);
   }
@@ -449,9 +452,10 @@ export class DeleteInstanceOperation {
     const finished = this.clock().toISOString();
     return this.db.transaction(() => {
       const jobs = this.db
-        .prepare("SELECT id FROM jobs WHERE operation_id=? AND status='running'")
+        .prepare("SELECT id, request_id FROM jobs WHERE operation_id=? AND status='running'")
-        .all(OPERATION_ID) as Array<{ id: string }>;
+        .all(OPERATION_ID) as Array<{ id: string; request_id: string }>;
-      for (const { id } of jobs) {
+      for (const { id, request_id: requestId } of jobs) {
+        this.#emitJob(id, requestId);
         this.db
           .prepare(
             "UPDATE job_items SET status='unknown-result',result_code='INTERRUPTED',finished_at=?,updated_at=? WHERE job_id=? AND status='running'",