feat(wiki): ingest nexus-spatial-discovery — 8-agent product discovery exercise

Ingest raw/Agent/agency-agents/examples/nexus-spatial-discovery.md
Source: 8 The Agency agents parallel discovery exercise for Nexus Spatial
Products: AI spatial command center (SpatialAIOps category)
Key findings: 2D-first/WebXR strategy, debugging as killer use case

Entities created: Nexus-Spatial, CrewAI
Concepts created: SpatialAIOps, Command-Theater-Interface,
  Debugging-Visualization, Semantic-Zoom, Growth-Loop

wiki/concepts/Debugging-Visualization.md

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+---
+title: "Debugging Visualization"
+type: concept
+tags: [spatial-computing, debugging, ux, multi-agent]
+last_updated: 2026-03-05
+---
+
+## Definition
+
+调试可视化（Debugging Visualization）——通过空间叠加将运行时追踪信息直接叠加在工作流结构之上，提供 3D 可视化的调试体验。
+
+由 [[nexus-spatial-discovery]] 中 [[UX-Researcher]] 识别为 **杀手级用例（Killer Use Case）**。
+
+## Why It's the Killer Use Case
+
+1. **Real quantified pain point**：用户花费 40% 时间通过日志检查调试 Agent 失败（[[nexus-spatial-discovery]] 用户画像数据）
+2. **2D tools handle it poorly**：现有 2D 工具无法有效可视化复杂的 Agent 执行追踪
+3. **3D uniquely suited**：工作流结构（节点+连接）+ 运行时数据（时间序列/调用栈/token消耗）天然适合 3D 叠加
+
+## UX Research Finding
+
+> "Debugging Is the Killer Use Case. Spatial overlay of runtime traces on workflow structure solves a real, quantified pain point that no 2D tool handles well." — [[UX-Researcher]]
+
+[[Product-Trend-Researcher]] 和 [[XR-Interface-Architect]] 均独立得出相同结论。
+
+## Implementation in Nexus Spatial
+
+- 7 种 Agent 状态可视化：Idle / Queued / Running / Streaming / Completed / Error / Paused
+- 状态通过边缘光晕、内饰动画、声音、粒子系统区分
+- LOD 节点系统：hover 显示最近 I/O，selected 显示完整追踪
+
+## Key Design Insight
+
+空间计算对**结构性**任务（放置、连接、重排节点）增加价值，但对**参数性**任务（文本输入、配置）制造摩擦。界面必须无缝混合空间和 2D 模式——2D 面板锚定在空间位置。
+
+## Related Concepts
+
+- [[Command-Theater-Interface]]：调试可视化的界面容器
+- [[Semantic-Zoom]]：调试视图的导航模式
+- [[SpatialAIOps]]：调试可视化是 SpatialAIOps 的核心差异化
+- [[Nexus-Spatial]]：调试可视化作为核心功能