Refactor ruin_app, add some README files, minor usability in reactivity

lib/ruin_app_proc_macros/src/lib.rs

@@ -686,23 +686,49 @@ fn expand_node(node: &Node) -> proc_macro2::TokenStream {
         let value = &property.value;
         quote! { .#name(#value) }
     });
-    let children = expand_children(&node.children);
 
     if is_component_path(path) {
+        // Component nodes: eager children so #[component] builder impls keep working.
+        let children = expand_children(&node.children);
         quote! {
             #path::builder()
                 #(#prop_calls)*
                 .children(#children)
         }
-    } else {
+    } else if is_text_path(path) {
+        // text(): children are TextChildren (string/value), not Views — keep eager.
+        let children = expand_children(&node.children);
         quote! {
             ::ruin_app::#path()
                 #(#prop_calls)*
                 .children(#children)
         }
+    } else {
+        // Primitive container nodes (column, row, block, button, scroll_box, …):
+        // Wrap children in a LazyChildren closure so that PartialTextStyle context is
+        // pushed BEFORE children run, enabling correct text style inheritance.
+        //
+        // Each child is spread via Children::into_views(), which handles:
+        //   - Child::Node results (View) via impl<T: IntoView> Children for T
+        //   - &str literals via Children for &str
+        //   - ChildViews (slot values) via Children for ChildViews (flattens)
+        let items = node.children.iter().map(expand_child);
+        quote! {
+            ::ruin_app::#path()
+                #(#prop_calls)*
+                .children(::ruin_app::LazyChildren(|| {
+                    let mut __v: ::std::vec::Vec<::ruin_app::View> = ::std::vec::Vec::new();
+                    #(__v.extend(::ruin_app::Children::into_views(#items));)*
+                    __v
+                }))
+        }
     }
 }
 
+fn is_text_path(path: &Path) -> bool {
+    path.segments.len() == 1 && path.segments[0].ident == "text"
+}
+
 fn expand_provider_node(node: &Node) -> proc_macro2::TokenStream {
     let path = &node.path;
     let value = match node.props.as_slice() {