chore: install openagent opencode

Signed-off-by: Dmytro Stanchiev <git@dmytros.dev>

.opencode/context/core/system/navigation.md

@@ -0,0 +1,40 @@
+<!-- Context: core/navigation | Priority: critical | Version: 1.0 | Updated: 2026-02-15 -->
+
+# Core System
+
+**Purpose**: System guides and paths for core operations
+
+---
+
+## Structure
+
+```
+core/system/
+├── navigation.md (this file)
+└── [system guides and paths]
+```
+
+---
+
+## Quick Routes
+
+| Task | Path |
+|------|------|
+| **System guides** | `./` |
+| **Core standards** | `../standards/navigation.md` |
+| **Context system** | `../context-system/navigation.md` |
+
+---
+
+## By Type
+
+**System Guides** → Operational guides for core systems  
+**Paths** → System paths and directory structures
+
+---
+
+## Related Context
+
+- **Core Navigation** → `../navigation.md`
+- **Context System** → `../context-system/navigation.md`
+- **Core Standards** → `../standards/navigation.md`