Merge remote-tracking branch 'origin/worktree/process-plugin-streaming-72f9b3' into worktree/job-kill-delivery

# Conflicts:
#	apps/web/tests/background-job-list.e2e.ts
#	apps/web/tests/live-job-stream.e2e.ts
#	apps/web/tests/snapshots/live-job-stream/settled.expected.md
#	apps/web/tests/snapshots/live-job-stream/streaming.expected.md
#	packages/api/job-controller/README.i18n.yaml
#	packages/api/job-controller/README.md
#	packages/api/job-controller/README.zh.md
#	snapshots/web/background-job-list/running.expected.md
#	snapshots/web/background-job-list/settled.expected.md

packages/api/session-controller/src/control.ts

@@ -212,6 +212,6 @@ function jobView(job: JobSnapshot): SessionJob {
     ...(job.detail === undefined ? {} : { detail: job.detail }),
     startedAt: job.startedAt,
     ...(job.finishedAt === undefined ? {} : { finishedAt: job.finishedAt }),
-    ...(job.outputTotal === undefined ? {} : { outputTotal: job.outputTotal }),
+    ...(job.outputTotal === undefined ? {} : { record: true as const }),
   }
 }

packages/api/session-controller/src/types.ts

@@ -489,11 +489,12 @@ export interface SessionJob {
   readonly startedAt: number
   readonly finishedAt?: number
   /**
-   * Total UTF-8 bytes the job's observation record holds so far. Present
-   * exactly when the job declared a record — the row is observable through
-   * the job controller's `job.observe` stream.
+   * Present exactly when the job declared an observation record: the row is
+   * observable through the job controller's `job.observe` stream, whose
+   * `opened` anchor carries the live byte offsets. The roster refreshes on
+   * lifecycle commits only, so it mirrors no byte count.
    */
-  readonly outputTotal?: number
+  readonly record?: true
 }
 
 /** Complete live control baseline emitted once per control stream generation. */