dsh_workflow

把 DSH 的一次性多 Agent 调度升级为可生成、可保存、可治理、可观察、可恢复的 Workflow 层：完整参考 KodaX workflow 设计能力，基于 Cordis、ctx.subagents、Session、后台 jobs、审批等 DSH 机制独立实现——命名/发现/生成/复用/暂停恢复/重跑续跑/持久证据/成本记录与治理，零核心 patch 的 bundle 形态。

Upgrades DSH's one-shot multi-agent dispatch into a Workflow layer that is generatable, saveable, governable, observable and resumable: a KodaX-workflow-inspired reimplementation on DSH's own Cordis, ctx.subagents, sessions, background jobs and approvals — naming, discovery, generation, reuse, pause/resume, rerun/continue, persistent evidence, cost tracking and governance as a zero-core-patch bundle.