refactor(structure): reorganize app layout

BREAKING CHANGE: root backend/frontend directories and old run/manage entrypoints were removed. Use apps/backend, apps/frontend, and python main.py commands instead.

deploy/systemd/checkin-app.service.example

@@ -0,0 +1,66 @@
+# ==============================================================================
+# CheckIn App V2 - Systemd Service File Example
+# ==============================================================================
+#
+# This file defines a systemd service for running the CheckIn App backend
+#
+# Installation:
+#   1. Copy this file: sudo cp deploy/systemd/checkin-app.service.example /etc/systemd/system/checkin-app.service
+#   2. Edit the file and replace placeholders with your actual values
+#   3. Reload systemd: sudo systemctl daemon-reload
+#   4. Enable service: sudo systemctl enable checkin-app.service
+#   5. Start service: sudo systemctl start checkin-app.service
+#   6. Check status: sudo systemctl status checkin-app.service
+#
+# Management Commands:
+#   Start:   sudo systemctl start checkin-app
+#   Stop:    sudo systemctl stop checkin-app
+#   Restart: sudo systemctl restart checkin-app
+#   Status:  sudo systemctl status checkin-app
+#   Logs:    sudo journalctl -u checkin-app -f
+#
+# ==============================================================================
+
+[Unit]
+Description=CheckIn App V2 - Backend API Service
+Documentation=https://github.com/Cccc-owo/CheckInApp
+After=network.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+# CHANGE THIS: Replace with your actual username
+User=username
+
+# CHANGE THIS: Replace with your actual installation path
+# Example: /home/username/CheckInApp
+WorkingDirectory=/path/to/CheckInApp
+
+# Start backend using the Python project manager
+ExecStart=/path/to/CheckInApp/venv/bin/python /path/to/CheckInApp/main.py backend --no-reload
+
+# Restart policy
+Restart=on-failure
+RestartSec=10s
+
+# Kill settings
+KillSignal=SIGTERM
+KillMode=mixed
+
+# Timeout settings
+TimeoutStartSec=60
+TimeoutStopSec=30
+
+# Resource limits
+LimitNOFILE=65535
+
+# Security settings
+NoNewPrivileges=true
+
+# Logging
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=checkin-app
+
+[Install]
+WantedBy=multi-user.target