dsh-swarm-orchestrator: Role-Based AI Swarm Orchestration in DeepSeek Harness

`dsh-swarm-orchestrator` addresses the bottlenecks encountered by a single agent when handling complex tasks by providing a supervised multi-agent team solution. The system implements a structured workflow in which an architect formulates plans, parallel builders execute a task DAG, reviewers enforce quality gates, and an integrator delivers the results. Core features include model fallback chains, a real-time dashboard, feedback-review loops, and memory-safe concurrency control. This plugin runs in the DSH host and is suited to long-running task scenarios that require parallel processing and strict quality control.