M4: 范式引擎与任务运行时

skill-engine(L4):载方法不载权力(白名单外工具即拒)、结晶片段经 ToolInvoker 留痕、
  装配入信封、技能目录渐进披露

flow-engine(L5):四种步型、确定性谓词跳步、重试与声明给定的兜底、
  异步步即监听(时限必配)、写类工具登记动作意向、步序位置持久

loop-engine(L5):自研 CMMN 子集解析器(表外构件直接报错,子集封顶可机器证明)、
  两副标准生命周期与迁移拓扑(引擎不得私改)、Enabled ≠ Active、
  语义性前提标待裁量评估(引擎不代裁量)、DMN 确定性求值 + 命中行留痕、
  DRD 缺口演绎与拓扑序、双向驱动与交集导航(断点即人环)、三型行动、
  终局唯放行与 Harness

task(L6):终态五名裁定(released 唯一成功)、Harness 预算环外强制与停滞熔断
  (监听中是健康态)、控制三语义(叫停不是终态,记最重档纠正)、改派留痕通知双方、
  断点续跑三份持久状态、封卷触发蒸馏钩子

301 个测试通过,门禁五道全绿

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KeDBx2PHLavbURXB8LJJ7m

apps/api/src/modules/task/index.ts

@@ -0,0 +1,64 @@
+/**
+ * module: task —— 唯一出口。只做 re-export,不写逻辑(编码规范 §10.1)。
+ */
+export type {
+  BudgetBreach,
+  BudgetCaps,
+  Consumption,
+  ControlOutcome,
+  ControlSemantic,
+  HarnessVerdict,
+  Paradigm,
+  ResumeReadiness,
+  StartTaskInput,
+  Task,
+  TaskRuntimeState,
+  TaskService,
+  TaskSnapshot,
+  TerminalCause,
+  TerminalState,
+  TickOutcome,
+} from './contract.ts';
+export { TaskAlreadyTerminalError, TaskNotFoundError } from './contract.ts';
+
+export type {
+  ActivityLoader,
+  Clock,
+  IdGenerator,
+  InteractionPhaseSetter,
+  ListenerProbe,
+  MemoryRecorder,
+  ParadigmEngine,
+  PersistenceProbe,
+  ReassignNotifier,
+  SchemaValidator,
+  TaskEventPublisher,
+  TaskStore,
+} from './port.ts';
+
+export type { TaskServiceDeps } from './internal/usecase/task-service.ts';
+export { createTaskService } from './internal/usecase/task-service.ts';
+
+export {
+  budgetBreaches,
+  durationMs,
+  isStalled,
+  judge,
+  terminalOf,
+  ZERO_CONSUMPTION,
+} from './internal/domain/harness.ts';
+export {
+  applyControl,
+  decideTerminal,
+  isPassiveOpen,
+  isSuccess,
+  isTerminalControl,
+  landingBlocked,
+  RESUME_SOURCES,
+  rejectionKeepsRunning,
+  resumeReadiness,
+  triggersFailureDisposition,
+} from './internal/domain/lifecycle.ts';
+
+export { createTaskStore } from './internal/adapter/task-store.ts';
+export { taskTable } from './internal/adapter/task-schema.ts';