Add full AARS system - Attendance & Accident Record System

- FastAPI backend with SQLite database
- React + TailwindCSS frontend
- JWT authentication
- Excel upload/download for attendance and accident records
- Shift roster management with S7a/S7b split
- Lateness/OT calculation based on shift times
- Roster info API endpoints
- Export API with token query parameter support
- Docker compose deployment

docker-compose.yml

@@ -0,0 +1,21 @@
+version: '3.8'
+
+services:
+  aars:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    ports:
+      - "18775:8000"
+    volumes:
+      - ./data:/app/data
+    environment:
+      - TZ=Asia/Hong_Kong
+      - PYTHONUNBUFFERED=1
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8000/api/auth/me"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s