init: @ui-arch 私人组件库 monorepo

- core/table-core: Headless 表格内核（排序/筛选/分页/选择插件 + 冒烟 9 项）
- core/frame: signal/computed/effect + hyperscript 微框架（零依赖）
- skin/ui: 16 个 DOM 组件（含自绘 select、滑动指示条 tabs、行选择 dataTable、form 表单校验）
- design/tokens: --ua-* 设计令牌（light/dark）
- tools/cli: ua 命令行（index/list/info/docs/style/mcp）+ MCP 注册表服务
- apps: demo 演示站（esbuild 单文件）+ docs 双轨文档（人类版 + llms-full.txt）

packages/design/tokens/tokens.json

@@ -0,0 +1,14 @@
+{
+  "$schema": "https://design-tokens.github.io/community-group/format/",
+  "color": {
+    "bg": { "light": "#ffffff", "dark": "#101216" },
+    "surface": { "light": "#f6f7f9", "dark": "#1a1c22" },
+    "text": { "light": "#1c1e21", "dark": "#e7e9ec" },
+    "textMuted": { "light": "#6b7280", "dark": "#888780" },
+    "accent": { "light": "#185fa5", "dark": "#378add" },
+    "danger": "#a32d2d",
+    "success": "#0f6e56"
+  },
+  "radius": { "sm": "4px", "md": "8px", "lg": "12px" },
+  "space": { "1": "4px", "2": "8px", "3": "12px", "4": "16px" }
+}