清理冗余路由代码，修复首页标题与模板安全

- 简化 http-api/http-tcp/web-toolkit 的 router.py，抽取重复代码
- 修复 ws-api middleware 中间件返回值传递问题
- 修复 web-toolkit template.py 安全漏洞 (eval → AST 验证)
- 将首页标题从 "OSS Runtime" 改为 "Future OSS"
- 更新 README.md 与 static/banner.svg
- 新增 i18n 国际化插件 (骨架)
- 新增 oss/shared/ 共享模块

store/@{FutureOSS}/i18n/manifest.json

@@ -0,0 +1,23 @@
+{
+  "metadata": {
+    "name": "i18n",
+    "version": "1.0.0",
+    "author": "FutureOSS",
+    "description": "国际化多语言支持 - 提供翻译加载/语言切换/HTTP中间件",
+    "type": "middleware"
+  },
+  "config": {
+    "enabled": true,
+    "args": {
+      "default_locale": "zh-CN",
+      "fallback_locale": "en-US",
+      "locales_dir": "locales",
+      "supported_locales": ["zh-CN", "en-US", "zh-TW"],
+      "auto_detect": true,
+      "cookie_name": "locale",
+      "query_param": "lang"
+    }
+  },
+  "dependencies": [],
+  "permissions": ["lifecycle"]
+}