初始提交：三玩法 Web 原型与设计文档

- 玩法一 数字一笔：规则库、求解器、26 关、竖屏触摸 Web 原型、测试
- 玩法二 连连气球：连消畅玩版核心、Web 原型、Cocos 球槽组件与导出脚本
- 玩法三 六边一笔：规则库、求解器、10 关 + 转墙实验包、Web 原型、测试
- 产品文档、UI 设计规范、各玩法 GDD / HANDOFF
- 文档移除全部外部参考作引用；删除玩法二 v0 旧稿

modes/02-connect-1234/scripts/check-cocos.mjs

@@ -0,0 +1,22 @@
+import { access, readdir, writeFile } from 'node:fs/promises';
+import { resolve } from 'node:path';
+import { spawnSync } from 'node:child_process';
+let declarations = process.argv[2] || process.env.COCOS_TYPES;
+if (!declarations) {
+  const root = '/Applications/Cocos/Creator';
+  try {
+    for (const version of (await readdir(root)).sort((a, b) => b.localeCompare(a, undefined, { numeric: true }))) {
+      const candidate = `${root}/${version}/CocosCreator.app/Contents/Resources/resources/3d/engine/bin/.declarations/cc.d.ts`;
+      try { await access(candidate); declarations = candidate; break; } catch {}
+    }
+  } catch {}
+}
+if (!declarations) throw new Error('请用 COCOS_TYPES 或命令参数提供 Creator 的 cc.d.ts 路径。');
+const target = resolve('cocos/export/02-connect-1234');
+const config = resolve('cocos/export/tsconfig.check.json');
+await writeFile(config, JSON.stringify({ compilerOptions: { target: 'ES2020', module: 'ESNext', moduleResolution: 'Bundler',
+  lib: ['ES2020', 'DOM'], strict: true, experimentalDecorators: true, useDefineForClassFields: false,
+  noEmit: true, skipLibCheck: true, types: [], baseUrl: '.', paths: { cc: [resolve(declarations)] } }, include: [target] }, null, 2));
+console.log(`检查真实 Creator 类型：${declarations}`);
+const result = spawnSync(process.execPath, ['node_modules/typescript/bin/tsc', '-p', config], { stdio: 'inherit' });
+process.exit(result.status ?? 1);