chore: install openagent opencode

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

.opencode/context/core/context-system/guides/navigation-templates.md

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+<!-- Context: core/navigation-templates | Priority: high | Version: 1.0 | Updated: 2026-02-15 -->
+
+# Navigation File Templates
+
+**Purpose**: Ready-to-use templates for navigation files
+
+---
+
+## Category Navigation Template
+
+```markdown
+# {Category} Navigation
+
+**Purpose**: [1 sentence]
+
+---
+
+## Structure
+
+```
+{category}/
+├── navigation.md
+├── {subcategory}/
+│   ├── navigation.md
+│   └── {files}.md
+```
+
+---
+
+## Quick Routes
+
+| Task | Path |
+|------|------|
+| **{Task 1}** | `{path}` |
+| **{Task 2}** | `{path}` |
+| **{Task 3}** | `{path}` |
+
+---
+
+## By {Concern/Type}
+
+**{Section 1}** → {description}
+**{Section 2}** → {description}
+**{Section 3}** → {description}
+
+---
+
+## Related Context
+
+- **{Category}** → `../{category}/navigation.md`
+```
+
+**Token count**: ~200-250 tokens
+
+---
+
+## Specialized Navigation Template
+
+```markdown
+# {Domain} Navigation
+
+**Scope**: [What this covers]
+
+---
+
+## Structure
+
+```
+{Relevant directories across multiple categories}
+```
+
+---
+
+## Quick Routes
+
+| Task | Path |
+|------|------|
+| **{Task 1}** | `{path}` |
+| **{Task 2}** | `{path}` |
+
+---
+
+## By {Framework/Approach}
+
+**{Tech 1}** → `{path}`
+**{Tech 2}** → `{path}`
+
+---
+
+## Common Workflows
+
+**{Workflow 1}**:
+1. `{file1}` ({purpose})
+2. `{file2}` ({purpose})
+```
+
+**Token count**: ~250-300 tokens
+
+---
+
+## Good Example (Token-Efficient)
+
+```markdown
+# Development Navigation
+
+**Purpose**: Software development across all stacks
+
+---
+
+## Structure
+
+```
+development/
+├── navigation.md
+├── ui-navigation.md
+├── principles/
+├── frontend/
+├── backend/
+└── data/
+```
+
+---
+
+## Quick Routes
+
+| Task | Path |
+|------|------|
+| **UI/Frontend** | `ui-navigation.md` |
+| **Backend/API** | `backend-navigation.md` |
+| **Clean code** | `principles/clean-code.md` |
+
+---
+
+## By Concern
+
+**Principles** → Universal practices
+**Frontend** → React, Vue, state
+**Backend** → APIs, Node, auth
+**Data** → SQL, NoSQL, ORMs
+```
+
+**Token count**: ~180 tokens ✅
+
+---
+
+## Bad Example (Too Verbose)
+
+```markdown
+# Development Navigation
+
+**Purpose**: This navigation file helps you find software development 
+patterns, standards, and best practices across all technology stacks 
+including frontend, backend, databases, and infrastructure.
+
+---
+
+## Introduction
+
+The development category contains comprehensive guides and patterns 
+for building modern applications. Whether you're working on frontend 
+user interfaces, backend APIs, database integrations...
+
+[... continues for 500+ tokens]
+```
+
+**Token count**: 500+ tokens ❌
+
+---
+
+## Troubleshooting
+
+| Issue | Solution |
+|-------|----------|
+| Too many tokens | Remove verbose descriptions, shorten entries |
+| Hard to scan | Use tables instead of paragraphs |
+| Missing files | Add to structure and quick routes |
+| Unclear paths | Use relative paths, add brief descriptions |
+
+---
+
+## Related
+
+- `navigation-design-basics.md` - Core principles and steps
+- `../standards/mvi.md` - MVI principle
+- `../examples/navigation-examples.md` - More examples