Integrate Prisma for content; enhance SEO, i18n, and deployment workflows

Co-authored-by: dennis <dennis@konkol.net>

env.example

@@ -34,6 +34,14 @@ N8N_API_KEY=your-n8n-api-key
 # JWT_SECRET=your-jwt-secret
 # ENCRYPTION_KEY=your-encryption-key
 ADMIN_BASIC_AUTH=admin:your_secure_password_here
+ADMIN_SESSION_SECRET=change_me_to_a_long_random_string_at_least_32_chars
+
+# Prisma migrations at container startup
+# - default: migrations are executed (`prisma migrate deploy`)
+# - set to true ONCE if you already have an existing DB that was created before migrations existed
+PRISMA_AUTO_BASELINE=false
+# emergency switch (not recommended for normal operation)
+# SKIP_PRISMA_MIGRATE=true
 
 # Monitoring (optional)
 # SENTRY_DSN=your-sentry-dsn