fix(web): force dynamic rendering for runtime env injection

Next.js pre-renders the root layout at build time, causing
process.env reads in runtimeEnvScript() to capture CI build-arg
values instead of Docker runtime env vars. Adding force-dynamic
ensures the layout renders per-request so container env vars
(like NEXT_PUBLIC_API_URL) are read at runtime.

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

apps/web/src/app/layout.tsx

@@ -5,6 +5,8 @@ import { ErrorBoundary } from "@/components/error-boundary";
 import { ThemeProvider } from "@/providers/ThemeProvider";
 import "./globals.css";
 
+export const dynamic = "force-dynamic";
+
 export const metadata: Metadata = {
   title: "Mosaic Stack",
   description: "Mosaic Stack Web Application",