fix: TypeScript-ошибка в exportTokens, next.config.ts для Vercel

- colors/page.tsx: Record<string, unknown> вместо Record<string, string>
- next.config.ts: turbopack.root только в development (Vercel conflict fix)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/web/app/foundation/colors/page.tsx

@@ -247,7 +247,7 @@ function ContrastRow({ pair }: { pair: typeof CONTRAST_PAIRS[0] }) {
 
 /* ─── Экспорт токенов ──────────────────────────────────────────────── */
 function exportTokens() {
-  const tokens: Record<string, Record<string, string>> = { colors: {} };
+  const tokens: Record<string, Record<string, unknown>> = { colors: {} };
   BRAND_COLORS.forEach(c => {
     const key = c.oracal !== "—" ? `brand-${c.oracal.toLowerCase()}` : "brand-white";
     const { r, g, b } = hexToRgb(c.hex);