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/package.json

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+{
+  "name": "@ui-arch/tokens",
+  "version": "0.1.0",
+  "description": "Design tokens for the @ui-arch component library (CSS variables + JSON)",
+  "type": "module",
+  "exports": {
+    "./tokens.css": "./tokens.css",
+    "./tokens.json": "./tokens.json"
+  },
+  "files": [
+    "tokens.css",
+    "tokens.json"
+  ],
+  "license": "MIT"
+}

packages/design/tokens/tokens.css

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+/* @ui-arch design tokens - light theme defaults + dark theme overrides */
+:root {
+  --ua-color-bg: #ffffff;
+  --ua-color-surface: #f6f7f9;
+  --ua-color-text: #1c1e21;
+  --ua-color-text-muted: #6b7280;
+  --ua-color-border: rgba(0, 0, 0, 0.15);
+  --ua-color-accent: #185fa5;
+  --ua-color-accent-contrast: #ffffff;
+  --ua-color-danger: #a32d2d;
+  --ua-color-success: #0f6e56;
+  --ua-color-warning: #9a6b1f;
+
+  --ua-radius-sm: 4px;
+  --ua-radius-md: 8px;
+  --ua-radius-lg: 12px;
+
+  --ua-space-1: 4px;
+  --ua-space-2: 8px;
+  --ua-space-3: 12px;
+  --ua-space-4: 16px;
+  --ua-space-table-cell: var(--ua-space-2) var(--ua-space-3);
+
+  --ua-font-size-sm: 12px;
+  --ua-font-size-md: 13px;
+  --ua-font-size-lg: 14px;
+}
+
+[data-theme='dark'] {
+  --ua-color-bg: #101216;
+  --ua-color-surface: #1a1c22;
+  --ua-color-text: #e7e9ec;
+  --ua-color-text-muted: #888780;
+  --ua-color-border: rgba(255, 255, 255, 0.15);
+  --ua-color-accent: #378add;
+  --ua-color-accent-contrast: #042c53;
+  --ua-color-danger: #d96a6a;
+  --ua-color-success: #4fc39e;
+  --ua-color-warning: #d9a94f;
+}

packages/design/tokens/tokens.json

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+{
+  "$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" }
+}

packages/design/tokens/ua.manifest.json

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+{
+  "name": "@ui-arch/tokens",
+  "type": "design-tokens",
+  "description": "Single source of design tokens. Skin packages consume CSS variables only - hardcoded colors inside skins are forbidden. Dark theme overrides values under [data-theme='dark'], never names.",
+  "tags": [
+    "tokens",
+    "theme",
+    "css-variables"
+  ],
+  "api": {
+    "entry": "tokens.css",
+    "exports": [
+      "tokens.css: import '@ui-arch/tokens/tokens.css' once at app root",
+      "tokens.json: programmatic access for tools and agents"
+    ],
+    "keyTypes": [
+      "--ua-color-*",
+      "--ua-space-*",
+      "--ua-radius-*"
+    ]
+  },
+  "usage": "import '@ui-arch/tokens/tokens.css'; then use var(--ua-color-accent) etc. in any skin package",
+  "docs": {
+    "intro": "设计令牌唯一来源：CSS 变量 --ua-* + 同名 JSON。皮肤只允许消费变量，禁止硬编码颜色；暗色只换值不换名。",
+    "steps": [
+      "引入：在应用入口 import '@ui-arch/tokens/tokens.css'",
+      "消费：组件样式一律 var(--ua-color-accent) 这类变量，不写死色值",
+      "暗色：根元素设 data-theme=dark，变量值自动切换",
+      "扩展：新令牌先同时加进 tokens.css 与 tokens.json，再重新生成文档站"
+    ]
+  }
+}