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/Semantic-Zoom.md

@@ -0,0 +1,40 @@
+---
+title: "Semantic Zoom"
+type: concept
+tags: [spatial-computing, navigation, ux, xr]
+last_updated: 2026-03-05
+---
+
+## Definition
+
+语义缩放（Semantic Zoom）——4 级导航范式，随用户缩放层级揭示不同粒度的信息，类似 iPad/iOS 地图的缩放交互但应用于工作流导航。
+
+由 [[nexus-spatial-discovery]] 中 [[XR-Interface-Architect]] 定义。
+
+## Four Levels
+
+| Level | What You See | Use Case |
+|-------|-------------|---------|
+| Fleet View | All workflows as abstract shapes, color-coded by status | Overview, portfolio management |
+| Workflow View | Node graph with labels and connections | Building, editing workflows |
+| Node View | Expanded configuration, recent I/O, status metrics | Inspection, configuration |
+| Trace View | Full execution trace with data inspection | Debugging, root cause analysis |
+
+## Design Principles
+
+1. **Glanceable Before Inspectable**：关键信息在 2 秒内通过颜色/大小/运动/位置感知
+2. **Progressive Spatial Complexity**：新用户从接近 2D 开始，空间能力随信心增长逐步揭示
+3. **Smooth transitions**：Overview → Focus 600ms，Focus → Detail 500ms，最大 600ms
+
+## Relation to Command Theater
+
+- Fleet View 对应 Overview Canopy（大范围，高空俯瞰）
+- Workflow/Node View 对应 Focus Arc（主要工作区）
+- Trace View 对应 Utility Rails（详细日志/追踪面板）
+
+## Related Concepts
+
+- [[Command-Theater-Interface]]：Semantic Zoom 的空间容器
+- [[Debugging-Visualization]]：Trace View 层级的主要应用
+- [[SpatialAIOps]]：Semantic Zoom 是 SpatialAIOps 导航的核心模式
+- [[Nexus-Spatial]]：Semantic Zoom 作为核心导航范式