chore: D22 落地——docs/SDD/wiki/CLAUDE.md 進 repo（Gitea private 預設全 push）

頂層 D22 決策（leo 2026-07-03 拍板）：推什麼由開發環境歸屬決定，
Gitea private＝除機敏值/build 產物/.github 外全 push。
解 T1.5 卡點：雲端工人 clone 拿得到 credential-store-migration.md，可就地改寫 SDD。
機敏掃描兩輪通過（新增 189 檔約 2.1MB，node_modules/dist/wasm 照舊排除）。

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

landing/middleware.ts

@@ -0,0 +1,22 @@
+import { NextResponse } from 'next/server';
+import type { NextRequest } from 'next/server';
+
+export function middleware(request: NextRequest) {
+  const { pathname } = request.nextUrl;
+
+  // Protect /dashboard and /mira (login required; mira 額外白名單檢查在 layout)
+  if (pathname.startsWith('/dashboard') || pathname.startsWith('/mira')) {
+    const session = request.cookies.get('arcrun_session');
+    if (!session?.value) {
+      const loginUrl = new URL('/login', request.url);
+      loginUrl.searchParams.set('redirect', pathname);
+      return NextResponse.redirect(loginUrl);
+    }
+  }
+
+  return NextResponse.next();
+}
+
+export const config = {
+  matcher: ['/dashboard', '/dashboard/:path*', '/mira', '/mira/:path*'],
+};