chore: scaffold monorepo and migrate uhd_web design system (W0-A)

- pnpm workspace: apps/{web,server}, packages/{contracts,db,domain,adapters,tasks,agent,testkit}
- server: Hono + zod-openapi, API Key auth with scopes, redacting pino logger, SSE event bus with replay, worker heartbeat
- db: Kysely + pg, file migrator, 0001_init (settings/api_key/audit_event/outbox_event)
- web: React Router 7 SPA console shell with 12 workspace placeholders, uhd_web tokens/ui/guard scripts
- docs: ADR-001 (Node over Deno), dev runbook, design system rules

Co-Authored-By: Claude Fable 5.1 <[email protected]>

apps/web/scripts/gen-design-tokens.mjs

@@ -0,0 +1,39 @@
+#!/usr/bin/env node
+// 从 apps/web/app/app.css 抽出自定义工具类的 token 名,生成 app/lib/design-tokens.generated.ts,
+// 供 cn() 的 tailwind-merge 登记。不登记的话合并器会把 `text-control` 当成文字颜色、
+// 和 `text-muted-foreground` 冲突后丢掉字号(2026-09-12 页面级复验抓到的)。
+// 手动维护登记表会漂移,所以改成生成:改了 app.css 跑 `pnpm gen:tokens`,CI 校验生成物是最新的。
+import { readFileSync, writeFileSync } from "node:fs";
+
+const css = readFileSync(new URL("../app/app.css", import.meta.url), "utf8");
+const pick = (ns) => [
+  ...new Set([...css.matchAll(new RegExp(`^\\s*--${ns}-([a-z0-9-]+)\\s*:`, "gm"))].map((m) => m[1])),
+];
+const tokens = {
+  fontSizes: pick("text").filter((n) => !/^(xs|sm|base|lg|xl|\dxl)$/.test(n)),
+  eases: pick("ease"),
+  radii: pick("radius"),
+  durations: [...new Set([...css.matchAll(/^@utility duration-([a-z0-9-]+)/gm)].map((m) => m[1]))],
+};
+const out = `// 由 scripts/gen-design-tokens.mjs 从 app/app.css 生成,不要手改;改了 app.css 跑 pnpm gen:tokens
+export const DESIGN_TOKENS = ${JSON.stringify(tokens, null, 2)} as const;
+`;
+const target = new URL("../app/lib/design-tokens.generated.ts", import.meta.url);
+if (process.argv.includes("--check")) {
+  let current = "";
+  try {
+    current = readFileSync(target, "utf8");
+  } catch {}
+  if (current !== out) {
+    console.error("app/lib/design-tokens.generated.ts 已过期,运行 pnpm gen:tokens");
+    process.exit(1);
+  }
+  console.log(
+    `design token 登记表是最新的(字号 ${tokens.fontSizes.length} / 缓动 ${tokens.eases.length} / 圆角 ${tokens.radii.length} / 时长 ${tokens.durations.length})`,
+  );
+} else {
+  writeFileSync(target, out);
+  console.log(
+    `已生成 app/lib/design-tokens.generated.ts(字号 ${tokens.fontSizes.length} / 缓动 ${tokens.eases.length} / 圆角 ${tokens.radii.length} / 时长 ${tokens.durations.length})`,
+  );
+}