fixes

examples/issue-0002.sx

@@ -0,0 +1,31 @@
+// issue-0002: impl for built-in types fails with "expected type name after 'for'"
+//
+// `impl Protocol for f32` should work the same as `impl Protocol for MyStruct`.
+// Currently the parser rejects built-in type names (f32, s64, bool, etc.) after `for`.
+
+Lerpable :: protocol #inline {
+    lerp :: (b: Self, t: f32) -> Self;
+}
+
+impl Lerpable for f32 {
+    lerp :: (self: f32, b: f32, t: f32) -> f32 { self + (b - self) * t; }
+}
+
+do_lerp :: (a: Lerpable, b: f32, t: f32) -> f32 {
+    a.lerp(b, t);
+}
+
+main :: () -> void {
+    // Static call through impl
+    result := f32.lerp(0.0, 10.0, 0.5);
+    print("lerp(0, 10, 0.5) = {}\n", result);
+
+    // Protocol dispatch through #inline erasure
+    val : f32 = 0.0;
+    p : *f32 = @val;
+    l : Lerpable = xx p;
+    result2 := do_lerp(l, 10.0, 0.25);
+    print("lerp(0, 10, 0.25) = {}\n", result2);
+}
+
+#import "modules/std.sx";