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/kilo_simple_test.hako

@@ -0,0 +1,79 @@
+// Simple Kilo Editor Test - Step by step validation
+// Test basic Box operations before full editor
+
+local s1
+local s2
+local s3
+local result
+
+print("=== StringBox Methods Test ===")
+
+// Test basic StringBox operations
+s1 = ""  // Create empty string instead of new StringBox()
+print("Created empty StringBox")
+
+s2 = "Hello"
+print("String length test:")
+result = s2.length()
+print(result)
+
+print("String substring test:")
+result = s2.substring(1, 4)
+print(result)
+
+print("String concat test:")
+s3 = " World"
+result = s2.concat(s3)
+print(result)
+
+print("=== ArrayBox Methods Test ===")
+
+local arr
+local item
+local len
+
+arr = new ArrayBox()
+print("Created empty ArrayBox")
+
+len = arr.length()
+print("Array length:")
+print(len)
+
+print("=== Basic Editor Component Test ===")
+
+// Test a simple editor component without full complexity
+box SimpleEditor {
+    init { text, cursor }
+    
+    init_empty() {
+        me.text = ""
+        me.cursor = 0
+    }
+    
+    append_char(ch) {
+        me.text = me.text.concat(ch)
+        me.cursor = me.cursor + 1
+    }
+    
+    get_text() {
+        return me.text
+    }
+    
+    get_cursor() {
+        return me.cursor
+    }
+}
+
+local editor
+editor = new SimpleEditor()
+editor.init_empty()
+
+print("Testing simple editor:")
+editor.append_char("H")
+editor.append_char("i")
+
+print("Editor text:")
+print(editor.get_text())
+
+print("Editor cursor:")
+print(editor.get_cursor())