mem: typed allocation helpers + drop bare malloc/free (Phase 2.2); resolve 0119 as |>-contract clarification

specs.md

@@ -2291,7 +2291,19 @@ p := Point.{3, 4};
 print("{}\n", p.point_sum());  // calls point_sum(p) → 7
 ```
 
-UFCS works with pointer receivers (auto-deref applies) and generic functions. If the field name exists as both a struct field and a free function, the struct field takes priority.
+UFCS works with pointer receivers (auto-deref applies). Generic struct
+*methods* dispatch via dot; a generic **free function** (any `$T` in its
+signature) is NOT dot-rewritten — call it directly or fluently via the
+pipe operator, which desugars at parse time to the direct call:
+
+```sx
+first_of :: (xs: []$T) -> T { xs[0] }
+
+first_of(xs);        // direct
+xs |> first_of();    // fluent — desugars to first_of(xs)
+```
+
+If the field name exists as both a struct field and a free function, the struct field takes priority.
 
 #### UFCS Aliases
 The `ufcs` keyword creates a name alias for a function, decoupling the method name from the function name: