Backup before route_lib.c refactoring

.opencode/context/development/frameworks/navigation.md

@@ -0,0 +1,29 @@
+# Frameworks Navigation
+
+**Purpose**: Full-stack and meta-frameworks that span multiple architectural layers.
+
+---
+
+## Structure
+
+```
+frameworks/
+├── navigation.md
+└── tanstack-start/
+    ├── navigation.md
+    └── [patterns].md
+```
+
+---
+
+## Quick Routes
+
+| Task | Path |
+|------|------|
+| **Tanstack Start** | `tanstack-start/navigation.md` |
+
+---
+
+## By Framework
+
+**Tanstack Start** → Full-stack React framework with SSR and server functions.