opencode: add OAC

opencode/context/openagents-repo/plugins/navigation.md

@@ -0,0 +1,42 @@
+<!-- Context: openagents-repo/navigation | Priority: critical | Version: 1.0 | Updated: 2026-02-15 -->
+
+# OpenAgents Plugins
+
+**Purpose**: Plugin architecture and documentation for OpenAgents Control
+
+---
+
+## Structure
+
+```
+openagents-repo/plugins/
+├── navigation.md (this file)
+├── context/
+│   └── [context plugin files]
+└── [plugin files]
+```
+
+---
+
+## Quick Routes
+
+| Task | Path |
+|------|------|
+| **Context plugin** | `./context/` |
+| **View plugins** | `./` |
+| **Guides** | `../guides/navigation.md` |
+
+---
+
+## By Type
+
+**Context Plugin** → Context system plugin documentation  
+**Plugin Architecture** → How plugins work in OpenAgents
+
+---
+
+## Related Context
+
+- **OpenAgents Navigation** → `../navigation.md`
+- **Guides** → `../guides/navigation.md`
+- **Core Concepts** → `../core-concepts/navigation.md`