fix: prisma migrate now runs at container startup + dotenv optional

Two related fixes for the deploy pipeline so DB schema changes never
again leave the site half-deployed.

PRISMA CONFIG (prisma.config.ts)
- "import 'dotenv/config'" was hard-required, but dotenv isn't installed
  in the production runtime image (env vars come from docker-compose).
- Wrapped in try/catch so it loads .env locally and silently no-ops in
  the container — `prisma migrate deploy` works in both environments.

DOCKERFILE
- Copies node_modules/prisma + prisma.config.ts to the runner stage so
  the CLI is available at runtime, not just at build.
- New CMD runs `prisma migrate deploy` before booting the server.
  Idempotent — already-applied migrations are skipped. If the DB is
  unreachable, the container exits and docker-compose retries.
- This means: from now on, `git pull && docker compose up -d --build app`
  is the entire deploy. No more "did you remember to run migrations?".

DEFENSIVE TRY/CATCH (applications/[slug]/page.tsx)
- prisma.application.findUnique and prisma.globalNode.findMany now have
  try/catch with logged errors. A transient DB hiccup or missing
  Application slug now degrades gracefully (renders "not found" or empty
  cases wall) instead of triggering a 500 Internal Server Error.

DEPLOY (David, this is the recovery sequence on the VPS)
  cd /opt/flux-srl
  git pull
  docker compose up -d --build app
  # The container will run pending migrations on its own.
  # No need to run `prisma migrate deploy` manually anymore.

src/app/[locale]/applications/[slug]/page.tsx

@@ -93,9 +93,12 @@ export default async function ApplicationPage({ params }: { params: Promise<{ sl
   const { slug, locale } = resolvedParams;
 
   // 1. Buscamos la Teoría General de la Aplicación
-  const rawData = await prisma.application.findUnique({
-    where: { slug }
-  });
+  let rawData: any = null;
+  try {
+    rawData = await prisma.application.findUnique({ where: { slug } });
+  } catch (error) {
+    console.error(`[applications/${slug}] DB error fetching application:`, error);
+  }
 
   if (!rawData) {
     return (
@@ -110,14 +113,19 @@ export default async function ApplicationPage({ params }: { params: Promise<{ sl
   const data = getLocalizedData(rawData, locale);
 
   // 2. Buscamos el "Muro de Soluciones" (Casos Reales específicos de esta app)
-  const rawRealCases = await prisma.globalNode.findMany({
-    where: { 
-      application: slug, 
-      isActive: true,
-      projectOverview: { not: null } 
-    },
-    orderBy: { createdAt: 'desc' }
-  });
+  let rawRealCases: any[] = [];
+  try {
+    rawRealCases = await prisma.globalNode.findMany({
+      where: {
+        application: slug,
+        isActive: true,
+        projectOverview: { not: null },
+      },
+      orderBy: { createdAt: "desc" },
+    });
+  } catch (error) {
+    console.error(`[applications/${slug}] DB error fetching cases:`, error);
+  }
 
   // 🔥 TRADUCIMOS TODOS LOS CASOS DE ESTUDIO DEL MURO
   const realCases = rawRealCases.map((node: any) => getLocalizedData(node, locale));