Move to_chain and to_render to Groupped trait

1 files changed, 22 insertions, 0 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4dc1aa9..9875171 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -195,6 +195,28 @@ use mingling::{res::ExitCode, REPL};
 use mingling::{res::ResExitCode, res::ResREPL};
 ```
 
+3. **\[core\]** **\[macros\]** Migrated `to_chain()` and `to_render()` methods from being generated individually per type by `#[derive(Groupped)]` and `pack!` macros, to being provided as default trait methods on the `Groupped` trait itself.
+
+   Previously, each packed or derived type had its own inherent `to_chain()` and `to_render()` methods generated by the macros. Now, these methods are defined on the `Groupped<Group>` trait with default implementations, making them available to all types that implement the trait without redundant code generation.
+
+   ```rust
+   // Before (generated per type by macros):
+   impl MyType {
+       pub fn to_chain(self) -> ChainProcess<Group> {
+           AnyOutput::new(self).route_chain()
+       }
+       pub fn to_render(self) -> ChainProcess<Group> {
+           AnyOutput::new(self).route_renderer()
+       }
+   }
+
+   // After (provided by Groupped trait default methods):
+   // just ensure Groupped is implemented — to_chain() and to_render()
+   // are automatically available
+   ```
+
+   Removed the per-type inherent method generation from both `groupped.rs` and `pack.rs` in `mingling_macros`.
+
 ### Release 0.1.9 (2026-05-29)
 
 #### Fixes: