chore(config): add demo profile and expose missing prod env vars

Author: tkahng

src/main/resources/application-demo.properties

@@ -0,0 +1,30 @@
+# Demo profile — same defaults as local; override via env vars
+spring.config.import=optional:file:./.env[.properties]
+
+# PostgreSQL
+spring.datasource.url=${DB_URL:jdbc:postgresql://localhost:5432/garden}
+spring.datasource.username=${DB_USERNAME:garden}
+spring.datasource.password=${DB_PASSWORD:garden}
+
+# MinIO (S3-compatible)
+storage.endpoint=${STORAGE_ENDPOINT:http://localhost:9000}
+storage.bucket=${STORAGE_BUCKET:garden}
+storage.private-bucket=${STORAGE_PRIVATE_BUCKET:garden-private}
+storage.access-key=${STORAGE_ACCESS_KEY:minioadmin}
+storage.secret-key=${STORAGE_SECRET_KEY:minioadmin}
+storage.base-url=${STORAGE_BASE_URL:http://localhost:9000/garden}
+
+# Mail — defaults to local dummy (MailHog/no-op)
+spring.mail.host=${MAIL_HOST:localhost}
+spring.mail.port=${MAIL_PORT:1025}
+spring.mail.username=${MAIL_USERNAME:}
+spring.mail.password=${MAIL_PASSWORD:}
+spring.mail.properties.mail.smtp.auth=${MAIL_SMTP_AUTH:false}
+spring.mail.properties.mail.smtp.starttls.enable=${MAIL_SMTP_STARTTLS:false}
+
+# JWT secret
+app.jwt.secret=${JWT_SECRET:bG9jYWxEZXZTZWNyZXRLZXlUaGF0SXNBdExlYXN0MzJCeXRlc0xvbmc=}
+
+# Google OAuth2
+spring.security.oauth2.client.registration.google.client-id=${GOOGLE_CLIENT_ID:local-client-id}
+spring.security.oauth2.client.registration.google.client-secret=${GOOGLE_CLIENT_SECRET:local-client-secret}

src/main/resources/application-prod.properties

@@ -2,10 +2,30 @@
 springdoc.api-docs.enabled=false
 springdoc.swagger-ui.enabled=false
 
+# Database
+spring.datasource.url=${DB_URL}
+spring.datasource.username=${DB_USERNAME}
+spring.datasource.password=${DB_PASSWORD}
+
 # Cloudflare R2 (S3-compatible) — set these env vars at deploy time
 storage.endpoint=${STORAGE_ENDPOINT}
 storage.bucket=${STORAGE_BUCKET}
 storage.private-bucket=${STORAGE_PRIVATE_BUCKET}
 storage.access-key=${STORAGE_ACCESS_KEY}
 storage.secret-key=${STORAGE_SECRET_KEY}
 storage.base-url=${STORAGE_BASE_URL}
+
+# Mail
+spring.mail.host=${MAIL_HOST}
+spring.mail.port=${MAIL_PORT}
+spring.mail.username=${MAIL_USERNAME}
+spring.mail.password=${MAIL_PASSWORD}
+spring.mail.properties.mail.smtp.auth=${MAIL_SMTP_AUTH:true}
+spring.mail.properties.mail.smtp.starttls.enable=${MAIL_SMTP_STARTTLS:true}
+
+# Google OAuth2
+spring.security.oauth2.client.registration.google.client-id=${GOOGLE_CLIENT_ID}
+spring.security.oauth2.client.registration.google.client-secret=${GOOGLE_CLIENT_SECRET}
+
+# Admin notifications (optional)
+app.admin-notification-email=${ADMIN_NOTIFICATION_EMAIL:}