In Progress Project Description Ongi-Team/ongi-device ESP32/FreeRTOS 기반 복약 자동화 IoT 디바이스 (ESP-IDF / C) Team-po/Server 팀 협업 플랫폼 백엔드 (Spring Boot / Java) Completed Project Description linux-system-programming System-level C tools — file management daemon, signal handling, ext2 filesystem analyzer (C) operating-system xv6 kernel implementation — scheduler, virtual memory, copy-on-write, file system snapshot (C) compiler C subset compiler — RD/LR parser, semantic analysis, symbol table, code generation (C) googit-hub Git-like CLI tool with Google Drive-based backup and restore (C)