test(golden): #45 bitwise ve #38 modül-düzeyi değişken golden testleri

4 yeni test: bitwise/basic, bitwise/compound, global/basic, global/init_expr.
19/19 golden test geçiyor.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/golden/bitwise/basic.expected

@@ -0,0 +1,5 @@
+8
+14
+24
+6
+-1

tests/golden/bitwise/basic.sqt

@@ -0,0 +1,10 @@
+int main() {
+    int a = 12;
+    int b = 10;
+    print(a & b);
+    print(a | b);
+    print(a << 1);
+    print(a >> 1);
+    print(~0);
+    return 0;
+}

tests/golden/bitwise/compound.expected

@@ -0,0 +1,4 @@
+6
+14
+56
+28

tests/golden/bitwise/compound.sqt

@@ -0,0 +1,12 @@
+int main() {
+    int x = 15;
+    x &= 6;
+    print(x);
+    x |= 8;
+    print(x);
+    x <<= 2;
+    print(x);
+    x >>= 1;
+    print(x);
+    return 0;
+}

tests/golden/global/basic.expected

@@ -0,0 +1,3 @@
+5
+105
+8

tests/golden/global/basic.sqt

@@ -0,0 +1,12 @@
+int counter = 0;
+int total = 100;
+
+int main() {
+    counter = 5;
+    total = total + counter;
+    print(counter);
+    print(total);
+    counter += 3;
+    print(counter);
+    return 0;
+}

tests/golden/global/init_expr.expected

@@ -0,0 +1,2 @@
+10
+20

tests/golden/global/init_expr.sqt

@@ -0,0 +1,9 @@
+int base = 10;
+int doubled = 0;
+
+int main() {
+    doubled = base * 2;
+    print(base);
+    print(doubled);
+    return 0;
+}