feat: scaffold Strapi 5 CMS with PostgreSQL and i18n config

Add Strapi 5 headless CMS application at apps/cms/ with:
- PostgreSQL database configuration (afterlife database)
- i18n plugin enabled with Spanish (default) and English locales
- TypeScript configuration
- Standard Strapi middleware stack
- Environment variable template (.env.example)
- Admin panel locale support for es/en

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

apps/cms/config/admin.ts

@@ -0,0 +1,13 @@
+export default ({ env }) => ({
+  auth: {
+    secret: env("ADMIN_JWT_SECRET"),
+  },
+  apiToken: {
+    salt: env("API_TOKEN_SALT"),
+  },
+  transfer: {
+    token: {
+      salt: env("TRANSFER_TOKEN_SALT"),
+    },
+  },
+});