feat(planning): ship holiday-aware planning and assistant upgrades

apps/web/next.config.ts

@@ -2,7 +2,9 @@ import path from "path";
 import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
+  distDir: process.env.NEXT_DIST_DIR ?? ".next",
   output: "standalone",
+  outputFileTracingRoot: path.resolve(__dirname, "../.."),
   devIndicators: false,
   experimental: {
     optimizePackageImports: ["recharts", "date-fns"],