phase: 20.49 COMPLETE; 20.50 Flow+String minimal reps; 20.51 selfhost v0/v1 minimal (Option A/B); hv1-inline binop/unop/copy; docs + run_all + CURRENT_TASK -> 21.0

examples/mix_num_bool_promote.hako

@@ -0,0 +1,16 @@
+// Mixed numeric/boolean promote demo
+// Enable: NYASH_JIT_EXEC=1 NYASH_JIT_THRESHOLD=1
+
+static box Main {
+    main() {
+        local a, f
+        a = 7
+        f = 7.5
+        // mixed compare (i64 < f64) should promote to f64 compare and yield b1
+        if (a < f) {
+            return 1
+        } else {
+            return 0
+        }
+    }
+}