syntax: Merge ALL definitions into Bind, and allow type variable introducers at every Bind

src/span.rs

@@ -14,7 +14,7 @@ impl std::fmt::Debug for Span {
     }
 }
 
-#[allow(non_snake_case)]
+#[expect(non_snake_case)]
 /// Stores the start and end byte position
 pub fn Span(head: u32, tail: u32) -> Span {
     Span { head, tail }