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.env.example

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+# Shared JWT secret (must match OnlyOffice Document Server)
+JWT_SECRET=change-me-to-a-long-random-secret
+
+# URLs
+PUBLIC_URL=http://localhost:3000
+INTERNAL_URL=http://backend:3000
+ONLYOFFICE_URL=http://localhost:8080
+ONLYOFFICE_INTERNAL_URL=http://onlyoffice
+
+# Session
+SESSION_TTL_MS=900000
+PORT=3000
+TEMP_DIR=/tmp/sejong
+
+# Upload
+MAX_UPLOAD_MB=50