218 pun fill binds by name not index

// PIN — a scalar-bind pun fill binds the field it NAMES, never the slot its
// append index lands on.
//
// desugarBindingPuns appends the synthesized pun arg at the END of the arg
// list. Here `x` fills `render-at`'s FIRST parameter but arrives at arg index
// 1 — index resolution bound it to `text`, emitting `.text = x` (a host type
// error downstream; KORU080 upstream). Name-first resolution (ast.
// resolveArgParamName) binds `x` to `x` regardless of position.
//
// Found via examples/style_reuse.k — `write-styled`'s `style` fill survived
// only because it appended at index 3 where field 3 happens to be `style`.
const std = @import("std");
~import std/io

~tor mkx {} -> i32
~proc mkx|zig { return 7; }

~tor render-at { x: i32, text: string }
~proc render-at|zig { std.debug.print("{d}:{s}\n", .{ x, text }); }

~mkx(): x |> render-at(text: "pun")