....

examples/issue-0003.sx

@@ -0,0 +1,25 @@
+// Issue: enum literal inference in match expression used as assignment RHS
+// When a match expression is assigned to a field with a known enum type,
+// the enum literals in case arms should infer their type from the assignment target.
+
+Color :: enum {
+    red;
+    green;
+    blue;
+    none;
+}
+
+Thing :: struct {
+    color: Color;
+}
+
+main :: () {
+    t : Thing = ---;
+    value : u8 = 1;
+    t.color = if value == {
+        case 1: .red;      // error: cannot infer enum type for literal
+        case 2: .green;
+        case 3: .blue;
+        else: .none;
+    };
+}

examples/issue-0004-defs.sx

@@ -0,0 +1,18 @@
+#import "modules/std.sx";
+
+Color :: struct {
+    r, g, b, a: u8;
+}
+
+COLOR_WHITE :: Color.{ r = 255, g = 255, b = 255, a = 255 };
+
+// Additional case: struct constant with enum-typed fields
+HAlign :: enum { leading; center; trailing; }
+VAlign :: enum { top; center; bottom; }
+
+Alignment :: struct {
+    h: HAlign;
+    v: VAlign;
+}
+
+ALIGN_CENTER :: Alignment.{ h = .center, v = .center };

examples/issue-0004.sx

@@ -0,0 +1,20 @@
+// Issue: top-level constants from imported files are not visible
+// COLOR_WHITE works after fix, but ALIGN_CENTER (struct with enum fields) does not.
+// Error: undefined identifier 'ALIGN_CENTER'
+
+#import "modules/std.sx";
+#import "examples/issue-0004-defs.sx";
+
+Thing :: struct {
+    color: Color;
+    alignment: Alignment;
+
+    make :: () -> Thing {
+        Thing.{ color = COLOR_WHITE, alignment = ALIGN_CENTER };
+    }
+}
+
+main :: () {
+    t := Thing.make();
+    print("{}\n", t.color.r);
+}