feat(dispatcher, gen_program): add From impl and default Entry pack type

Add a `From<pack_Type> for crate::Entry` implementation in
`dispatcher!()` macro and a default `Entry` pack type in
`gen_program!()` for ergonomic program entry handling

3 files changed, 12 insertions, 0 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2d9198b..5fe8be1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -136,6 +136,10 @@ None
 
 4. **[`pathf:patterns`]** Added `CommandPattern` to the `pathf` pattern analyzer, matching functions annotated with `#[command]`. The pattern tracks the generated hidden module (`__command_{fn}_module`) and marks it as a local module item via `AnalyzeItem::local_module()`. The build system generates a glob re-export `use path::__command_{fn}_module::*;` to bring all generated types (`Entry*`, `CMD*`, chain struct, dispatcher static) into scope.
 
+5. **[`macros:dispatcher`]** Added a `From<pack_Type> for crate::Entry` implementation inside the `dispatcher!()` macro expansion. When the `dispatcher!()` macro generates the entry pack type (via `pack!(#pack = Vec<String>)`), it now also generates `impl From<#pack> for crate::Entry { fn from(value: #pack) -> Self { crate::Entry::new(value.inner) } }`. This allows pack types generated by `dispatcher!()` to be directly converted into `crate::Entry`, enabling ergonomic integration with program-level entry handling.
+
+6. **[`macros:gen_program`]** Added a `pack!(Entry = Vec<String>)` invocation inside the `__this_program_impl` module generated by `gen_program!()`. This creates a `Entry` pack type (aliasing a `Vec<String>` container) directly in the generated module, providing a default entry point type for the program that can be used by `dispatcher!()`-generated types and other chain infrastructure without requiring the user to define a separate entry pack type manually.
+
 #### **BREAKING CHANGES** (API CHANGES):
 
 None
diff --git a/mingling_macros/src/func/dispatcher.rs b/mingling_macros/src/func/dispatcher.rs
index 45ac4c8..ef02618 100644
--- a/mingling_macros/src/func/dispatcher.rs
+++ b/mingling_macros/src/func/dispatcher.rs
@@ -121,6 +121,12 @@ pub(crate) fn dispatcher(input: TokenStream) -> TokenStream {
 
         ::mingling::macros::pack!(#(#entry_attrs)* #pack = Vec<String>);
 
+        impl From<#pack> for crate::Entry {
+            fn from(value: #pack) -> Self {
+                crate::Entry::new(value.inner)
+            }
+        }
+
         #comp_entry
         #dispatch_tree_entry
 
diff --git a/mingling_macros/src/func/gen_program.rs b/mingling_macros/src/func/gen_program.rs
index 0c35318..d50041e 100644
--- a/mingling_macros/src/func/gen_program.rs
+++ b/mingling_macros/src/func/gen_program.rs
@@ -56,6 +56,8 @@ pub(crate) fn gen_program_impl(_input: TokenStream) -> TokenStream {
             /// Alias for the current program type `ThisProgram`
             pub type Next = ::mingling::ChainProcess<ThisProgram>;
 
+            ::mingling::macros::pack!(Entry = Vec<String>);
+
             impl ::mingling::Routable<ThisProgram> for ::mingling::ChainProcess<ThisProgram>
             {
                 fn to_chain(self) -> ::mingling::ChainProcess<ThisProgram> {