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

local_tests/test_kilo_memory_simple.hako

@@ -0,0 +1,48 @@
+// 🧪 Kilo Memory Efficiency Simple Test - Phase 10 Feature Verification
+
+static box Main {
+    init { console }
+    
+    main() {
+        me.console = new ConsoleBox()
+        me.console.log("🧪 Phase 10 Kilo Memory Test")
+        
+        // Simple text buffer simulation
+        local buffer = new ArrayBox()
+        me.console.log("📊 Created empty buffer")
+        
+        // Test 1: Add some text
+        buffer.push("Hello World")
+        buffer.push("Second Line")
+        me.console.log("✅ Added 2 lines: " + buffer.length() + " total")
+        
+        // Test 2: Memory monitoring simulation  
+        local line_count = buffer.length()
+        local estimated_memory = line_count * 20  // Simple estimation
+        me.console.log("📈 Estimated memory: " + estimated_memory + " bytes")
+        
+        // Test 3: "Accidental full copy" simulation
+        local old_memory = estimated_memory
+        buffer.push("This is a much longer line that might cause memory issues if copied inefficiently")
+        
+        local new_line_count = buffer.length() 
+        local new_memory = new_line_count * 20
+        local memory_growth = new_memory - old_memory
+        
+        me.console.log("📊 Memory growth: " + old_memory + " -> " + new_memory + " (+"+memory_growth+")")
+        
+        if (memory_growth > 100) {
+            me.console.log("⚠️ Large memory growth detected! Possible inefficient copy")
+        } else {
+            me.console.log("✅ Memory growth within normal range")
+        }
+        
+        // Test 4: Operation counting
+        local operation_count = 3  // We did 3 push operations
+        local memory_per_op = new_memory / operation_count
+        me.console.log("📈 Average memory per operation: " + memory_per_op + " bytes")
+        
+        me.console.log("🎉 Phase 10 Kilo memory efficiency test complete!")
+        return "Kilo memory test finished"
+    }
+}