Update nexus wiki content

wiki/concepts/Pipeline-State-Management.md

@@ -0,0 +1,31 @@
+---
+title: "Pipeline-State-Management"
+type: concept
+tags: []
+sources: [agents-orchestrator]
+last_updated: 2026-05-29
+---
+
+## Definition
+**Pipeline State Management**（流水线状态管理）是 [[AgentsOrchestrator]] 在整个开发流程中追踪和维护项目状态的能力——追踪当前任务、所处阶段、完成状态，在 Agent 间传递上下文信息，处理错误并实现恢复。
+
+## Core Responsibilities
+- **Track progress**: Maintain state of current task, phase, and completion status
+- **Context preservation**: Pass relevant information between agents
+- **Error recovery**: Handle agent failures gracefully with retry logic
+- **Documentation**: Record decisions and pipeline progression
+
+## State Tracking Elements
+- Current task and phase
+- Completion status of each task
+- Retry count per task
+- Agent handoff context
+- Quality gate decisions (PASS/FAIL)
+
+## Relationship to Other Concepts
+- Complementary to [[Agent-Handoff]] — provides the state infrastructure that enables smooth agent transitions
+- Enhanced by [[Quality-Gate]] — quality gates update pipeline state
+- Referenced in [[AgentsOrchestrator]] Phase 3 Dev-QA Loop
+
+## Sources
+- [[agents-orchestrator]]