docs: add module-level documentation and improve doc comments

1 files changed, 4 insertions, 0 deletions

diff --git a/mingling_pathf/src/patterns/group.rs b/mingling_pathf/src/patterns/group.rs
index 99d1137..0e4b50d 100644
--- a/mingling_pathf/src/patterns/group.rs
+++ b/mingling_pathf/src/patterns/group.rs
@@ -1,3 +1,7 @@
+//! The `GroupPattern` matches the `group!` and `group_structural!` macros and
+//! extracts the type name or alias defined within them.
+//! This is used to track type groups for code generation or analysis.
+
 use syn::Item;
 
 use crate::pattern_analyzer::{AnalyzeItem, AnalyzePattern};