feat(macros): add Routable trait and update route! macro

Introduce a `Routable` trait with `to_chain` and `to_render`
methods, replacing direct `Grouped` usage in the `route!` macro
so error branches correctly route through the rendering pipeline

1 files changed, 3 insertions, 0 deletions

diff --git a/mingling_core/src/asset.rs b/mingling_core/src/asset.rs
index b1fd617..9b9a5d4 100644
--- a/mingling_core/src/asset.rs
+++ b/mingling_core/src/asset.rs
@@ -21,3 +21,6 @@ pub mod node;
 
 #[doc(hidden)]
 pub mod renderer;
+
+#[doc(hidden)]
+pub mod routable;