Fix ModuloBox E0046 error and add null literal support

Co-authored-by: moe-charm <217100418+moe-charm@users.noreply.github.com>

test_static_box_patterns.nyash

@@ -0,0 +1,71 @@
+// Test for proper static box usage patterns
+static box StaticBoxTest {
+    init { console, test_result }
+    
+    main() {
+        me.console = new ConsoleBox()
+        me.console.log("🧪 Testing proper static box patterns")
+        
+        // ✅ Correct: Call static method directly
+        local result = StaticBoxTest.test_static_method()
+        me.console.log("Static method result: " + result)
+        
+        // ✅ Correct: Access static box fields through me
+        me.test_result = "Static box initialization successful"
+        me.console.log("Static field access: " + me.test_result)
+        
+        me.console.log("✅ Static box pattern tests completed")
+        return "Static box usage verified"
+    }
+    
+    test_static_method() {
+        return "Static method executed successfully"
+    }
+}
+
+// Test proxy server pattern (simplified)
+static box SimpleProxyTest {
+    init { console, port, running }
+    
+    main() {
+        me.console = new ConsoleBox()
+        me.console.log("🌐 Testing simplified proxy server pattern")
+        
+        // ✅ Correct: Initialize static box fields
+        me.port = 8080
+        me.running = true
+        
+        me.console.log("Proxy configured on port: " + me.port)
+        me.console.log("Proxy running status: " + me.running)
+        
+        // ✅ Correct: Call other static methods
+        local startup_result = SimpleProxyTest.simulate_startup()
+        me.console.log("Startup result: " + startup_result)
+        
+        return "Proxy simulation complete"
+    }
+    
+    simulate_startup() {
+        return "Proxy server simulation started successfully"
+    }
+}
+
+// Entry point
+static box Main {
+    init { console }
+    
+    main() {
+        me.console = new ConsoleBox()
+        me.console.log("🚀 Testing Static Box Patterns")
+        
+        // Test both static box patterns
+        local test1_result = StaticBoxTest.main()
+        me.console.log("Test 1: " + test1_result)
+        
+        local test2_result = SimpleProxyTest.main()
+        me.console.log("Test 2: " + test2_result)
+        
+        me.console.log("✅ All static box pattern tests passed")
+        return "Static box tests complete"
+    }
+}