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_state_sharing_validation.hako

@@ -0,0 +1,31 @@
+// 🎯 Phase B-C 验证测试 - 确认状态共享修复是否有效
+static box Main {
+    init { array_test, map_test, buffer_test, socket_test }
+    main() {
+        // ArrayBox测试 
+        local arr
+        arr = new ArrayBox()
+        arr.push("hello")
+        me.array_test = arr.length()  // 期待: 1
+        
+        // MapBox测试
+        local map
+        map = new MapBox()
+        map.set("key1", "value1")
+        me.map_test = map.size()      // 期待: 1
+        
+        // BufferBox测试  
+        local buf
+        buf = new BufferBox()
+        buf.write([72, 101, 108, 108, 111])  // "Hello"
+        me.buffer_test = buf.length() // 期待: 5
+        
+        // SocketBox测试
+        local sock
+        sock = new SocketBox()
+        sock.bind("127.0.0.1", 8080)
+        me.socket_test = 1            // 暂时设为1，表示创建成功
+        
+        return me.array_test
+    }
+}