release: v5.4.2 - terminal模拟器 + Operit桥接

新增插件:
- terminal: 持久交互式终端，纯标准库，全平台，13个测试
- operit_bridge: Operit AI工具格式桥接，47个脚本288个工具，12个测试

其他:
- plugins/operit/: 47个Operit官方脚本
- 更新plugin_registry.json/plugins_config.py
- 更新about.txt/CHANGELOG.md至v5.4.2

plugins/operit/time.ts

@@ -0,0 +1,88 @@
+/* METADATA
+{
+  name: time
+
+  display_name: {
+    zh: "时间"
+    en: "Time"
+  }
+  description: {
+    zh: "提供时间相关功能。实际上，激活本包的同时已经能够获取时间了。"
+    en: "Provides time-related utilities. In practice, current time is already available once this package is enabled."
+  }
+  enabledByDefault: true
+  category: "Utility"
+  tools: [
+    {
+      name: get_time
+      description: {
+        zh: "获取当前时间。当使用此包时，AI已经自动获取了当前的时间信息。"
+        en: "Get the current time. When using this package, the AI may already have the current time context."
+      }
+      parameters: []
+    },
+    {
+      name: format_time
+      description: {
+        zh: "格式化时间。提供各种时间格式化选项。"
+        en: "Format time. Provides various time formatting options."
+      }
+      parameters: []
+    }
+  ]
+}*/
+
+const timePackage = (function () {
+  async function get_time(): Promise<any> {
+    const now = new Date();
+
+    return {
+      timestamp: now.getTime(),
+      iso: now.toISOString(),
+      local: now.toLocaleString(),
+      date: {
+        year: now.getFullYear(),
+        month: now.getMonth() + 1,
+        day: now.getDate(),
+        weekday: now.toLocaleDateString(undefined, { weekday: 'long' })
+      },
+      time: {
+        hours: now.getHours(),
+        minutes: now.getMinutes(),
+        seconds: now.getSeconds()
+      }
+    };
+  }
+
+  async function format_time(): Promise<any> {
+    const now = new Date();
+
+    const pad = (n: number) => n.toString().padStart(2, '0');
+
+    const hours = now.getHours();
+    const minutes = now.getMinutes();
+    const seconds = now.getSeconds();
+
+    const time24h = `${pad(hours)}:${pad(minutes)}:${pad(seconds)}`;
+
+    const suffix = hours >= 12 ? 'PM' : 'AM';
+    const hour12 = hours % 12 === 0 ? 12 : hours % 12;
+    const time12h = `${pad(hour12)}:${pad(minutes)}:${pad(seconds)} ${suffix}`;
+
+    return {
+      iso: now.toISOString(),
+      date: `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())}`,
+      time24h,
+      time12h
+    };
+  }
+
+  return {
+    get_time,
+    format_time
+  };
+})();
+
+// 逐个导出
+exports.get_time = timePackage.get_time;
+exports.format_time = timePackage.format_time;