fix: make product copy direct and factual

The website, README, and Smart Heartbeat interface used promotional superlatives, generic benefit labels, and personified growth language that obscured the actual product behavior. The English README is now the repository entry point with a separate Chinese version, and both website and in-app copy describe concrete capabilities, reports, suggestions, and execution boundaries.

Release note: 优化官网、README 与智能心跳界面的中英文文案，去除空泛宣传和拟人化表达，改为直接说明产品能力、运行记录与建议内容。

sites/scripts/validate.mjs

@@ -249,18 +249,18 @@ for (const breakpoint of ["1199px", "959px", "719px"]) {
 
 const requiredCopy = [
   "免注册",
-  "支持信创软硬件的一站式 AI 助手",
-  "首个全面覆盖国产化 CPU 架构的开源桌面 AI 助理产品",
+  "支持信创软硬件的",
+  "桌面版本覆盖国产 x64、ARM64 和龙芯 LoongArch",
   "龙芯 LoongArch 独立编译预览版",
   "龙芯 LoongArch（实验预览）",
   "桌面助手",
-  "AI 编程工具台",
+  "AI 编程",
   "Windows、macOS、Linux",
   "统信 UOS",
   "银河麒麟",
   "海光 · 兆芯（x64）",
   "鲲鹏 · 飞腾（ARM64）",
-  "独创的统一 Agent Runtime",
+  "Agent Runtime 可连接",
   "直连模型、OpenCode、Continue",
   "DeepSeek Harness",
   "魔法笔记",
@@ -275,10 +275,10 @@ for (const copy of requiredCopy) {
 
 const requiredEnglishCopy = [
   "No account required.",
-  "Your all-in-one",
-  "AI assistant.",
+  "Model chat and coding agents",
+  "on your desktop.",
   "Windows, macOS, and Linux",
-  "Unified Agent Runtime",
+  "Agent Runtimes in one desktop interface",
   "Direct models",
   "OpenCode",
   "Continue",