phase3(契约层): protocol.ts + 落盘状态 + store 失败策略/判活原语

多进程执行解耦的 Phase 0 共享契约（worker 与 daemon 都 import 它）：
- executor/protocol.ts: JobSpec(daemon→worker 唯一输入) + OutboxRecord(worker→daemon) +
  文件 IO(job/outbox/heartbeat) + isWorkerAlive(心跳为主/boot 窗口 pid 兜底/防 pid 复用)
- schema+db+types+mappers: runs.worker_pid/last_seq、tasks.next_eligible_at(持久化退避)
- store: failTaskAttempt(失败/重试策略唯一落点) + setNextEligibleAt/setWorkerPid/setLastSeq +
  countExecuting + executingWithLatestExecutorRun + reconcileInterrupted(isAlive 注入,默认保守回收)

纯增量,140 测试全绿。worker.ts/pipeline.ts(worker 侧) 与 orchestrator/ingest/index(daemon 侧) 待接。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/daemon/index.ts

@@ -62,7 +62,7 @@ async function main(): Promise<void> {
   await app.listen({ host: cfg.host, port: cfg.port });
   app.log.info(`maestrod 就绪 · db=${cfg.dbFile} · http://${cfg.host}:${cfg.port} · ws ${cfg.host}:${cfg.port}/ws`);
   if (rec.blocked || rec.released) app.log.info(`依赖对账：转入等依赖 ${rec.blocked} · 放行可执行 ${rec.released}`);
-  if (itr.tasks) app.log.info(`中断恢复：${itr.tasks} 个执行中任务重新入队（${itr.runs} 个 run 标记中断）`);
+  if (itr.readopted || itr.reclaimed) app.log.info(`中断恢复：re-adopt ${itr.readopted} · 回收 ${itr.reclaimed}`);
 
   const syncTimer = startSyncLoop(store, app);
   const orchTimer = startOrchestrator(store, app);   // 编排器：自动领取可执行任务（MAESTRO_ORCH_INTERVAL 秒，0=关闭）