feat: Prepare for code modularization and cleanup

- Archive old documentation and test files to `docs/archive/` and `local_tests/`.
- Remove various temporary and old files from the project root.
- Add `nekocode-rust` analysis tool and its output files (`nekocode/`, `.nekocode_sessions/`, `analysis.json`).
- Minor updates to `apps/chip8_nyash/chip8_emulator.nyash` and `local_tests` files.

This commit cleans up the repository and sets the stage for further code modularization efforts, particularly in the `src/interpreter` and `src/parser` modules, based on recent analysis.

local_tests/test_state_sharing_validation.nyash

@@ -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
+    }
+}