Backup before route_lib.c refactoring

.opencode/context/development/data/navigation.md

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+# Data Layer Navigation
+
+**Purpose**: Database and data access patterns
+
+**Status**: 🚧 Placeholder - Content coming soon
+
+---
+
+## Planned Structure
+
+```
+data/
+├── navigation.md
+│
+├── sql-patterns/
+│   ├── postgres-patterns.md
+│   ├── mysql-patterns.md
+│   └── query-optimization.md
+│
+├── nosql-patterns/
+│   ├── mongodb-patterns.md
+│   ├── redis-patterns.md
+│   └── dynamodb-patterns.md
+│
+└── orm-patterns/
+    ├── prisma-patterns.md
+    ├── typeorm-patterns.md
+    └── sequelize-patterns.md
+```
+
+---
+
+## Related Context
+
+- **Backend Navigation** → `../backend-navigation.md`
+- **Core Standards** → `../../core/standards/code-quality.md`