feat: run.sh restart/stop/status + real DB connector + GitLab CI

1. run.sh: start/stop/restart/status/logs/build/test
   - PID file management in .pids/
   - Colored output, health check wait, log files
   - Auto alembic migrate on start

2. DB Connector (replaces mock aiomysql):
   - MySQL: aiomysql (connect/query/dml/test)
   - PostgreSQL: asyncpg (connect/query/dml/test)
   - SQLite: sqlite3 via executor (connect/query/dml/test)
   - Unified interface: DBConnector.test_connection/execute_query/execute_dml
   - Connection test returns version + latency

3. GitLab CI/CD pipeline:
   - test: backend pytest + frontend build
   - build: Docker images (manual trigger)
   - deploy: SSH deploy (manual trigger)
   - Cache: pip + node_modules

Tests: 128 passing, frontend build: OK

run.sh

@@ -4,43 +4,235 @@ set -e
 SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
 cd "$SCRIPT_DIR"
 
-echo "=== Web-Lite 数据审核平台启动脚本 ==="
+PID_DIR="$SCRIPT_DIR/.pids"
+BACKEND_PID_FILE="$PID_DIR/backend.pid"
+FRONTEND_PID_FILE="$PID_DIR/frontend.pid"
+LOG_DIR="$SCRIPT_DIR/logs"
 
-command -v python3 >/dev/null 2>&1 || { echo "需要 Python 3.11+"; exit 1; }
-command -v node >/dev/null 2>&1 || { echo "需要 Node.js 18+"; exit 1; }
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+CYAN='\033[0;36m'
+NC='\033[0m'
 
-# Backend
-echo "[1/4] 安装后端依赖..."
-cd "$SCRIPT_DIR/backend"
-if [ ! -d "venv" ]; then
-  python3 -m venv venv
-fi
-source venv/bin/activate
-pip install -r requirements.txt -q
+log()  { echo -e "${CYAN}[sql-platform]${NC} $1"; }
+ok()   { echo -e "${GREEN}[OK]${NC} $1"; }
+warn() { echo -e "${YELLOW}[WARN]${NC} $1"; }
+err()  { echo -e "${RED}[ERROR]${NC} $1"; }
 
-echo "[2/4] 启动后端 (http://localhost:9000)..."
-python -m uvicorn app.main:app --host 0.0.0.0 --port 9000 --reload &
-BACKEND_PID=$!
+ensure_dirs() {
+    mkdir -p "$PID_DIR" "$LOG_DIR"
+}
 
-# Frontend
-echo "[3/4] 安装前端依赖..."
-cd "$SCRIPT_DIR/frontend"
-if [ ! -d "node_modules" ]; then
-  npm install
-fi
+is_running() {
+    local pid_file=$1
+    local name=$2
+    if [ -f "$pid_file" ]; then
+        local pid=$(cat "$pid_file")
+        if kill -0 "$pid" 2>/dev/null; then
+            return 0
+        else
+            rm -f "$pid_file"
+        fi
+    fi
+    return 1
+}
 
-echo "[4/4] 启动前端 (http://localhost:5173)..."
-npm run dev &
-FRONTEND_PID=$!
+stop_service() {
+    local pid_file=$1
+    local name=$2
+    if is_running "$pid_file" "$name"; then
+        local pid=$(cat "$pid_file")
+        log "停止 $name (PID: $pid)..."
+        kill "$pid" 2>/dev/null || true
+        # 等待进程退出
+        for i in $(seq 1 10); do
+            if ! kill -0 "$pid" 2>/dev/null; then
+                break
+            fi
+            sleep 0.3
+        done
+        # 强制杀死
+        if kill -0 "$pid" 2>/dev/null; then
+            kill -9 "$pid" 2>/dev/null || true
+        fi
+        rm -f "$pid_file"
+        ok "$name 已停止"
+    else
+        warn "$name 未运行"
+    fi
+}
 
-echo ""
-echo "=== 服务已启动 ==="
-echo "前端: http://localhost:5173"
-echo "后端: http://localhost:9000"
-echo "API 文档: http://localhost:9000/docs"
-echo "默认账号: admin / 123456"
-echo ""
-echo "按 Ctrl+C 停止所有服务"
+stop_all() {
+    stop_service "$FRONTEND_PID_FILE" "前端"
+    stop_service "$BACKEND_PID_FILE" "后端"
+}
 
-trap "kill $BACKEND_PID $FRONTEND_PID 2>/dev/null; exit 0" INT TERM
-wait
+start_backend() {
+    if is_running "$BACKEND_PID_FILE" "后端"; then
+        warn "后端已在运行 (PID: $(cat $BACKEND_PID_FILE))"
+        return
+    fi
+
+    log "启动后端..."
+
+    cd "$SCRIPT_DIR/backend"
+    if [ ! -d "venv" ]; then
+        log "创建 Python 虚拟环境..."
+        python3 -m venv venv
+    fi
+    source venv/bin/activate
+
+    if [ ! -f "venv/lib/python*/site-packages/fastapi/__init__.py" ] 2>/dev/null; then
+        log "安装后端依赖..."
+        pip install -r requirements.txt -q 2>&1 | tail -3
+    fi
+
+    # 数据库迁移
+    venv/bin/alembic upgrade head 2>/dev/null || true
+
+    nohup venv/bin/python -m uvicorn app.main:app \
+        --host 0.0.0.0 --port 9000 --reload \
+        > "$LOG_DIR/backend.log" 2>&1 &
+    echo $! > "$BACKEND_PID_FILE"
+
+    # 等待后端就绪
+    for i in $(seq 1 15); do
+        if curl -s http://localhost:9000/docs > /dev/null 2>&1; then
+            ok "后端已启动 → http://localhost:9000 (PID: $(cat $BACKEND_PID_FILE))"
+            return
+        fi
+        sleep 0.5
+    done
+    warn "后端启动中... 查看日志: tail -f $LOG_DIR/backend.log"
+}
+
+start_frontend() {
+    if is_running "$FRONTEND_PID_FILE" "前端"; then
+        warn "前端已在运行 (PID: $(cat $FRONTEND_PID_FILE))"
+        return
+    fi
+
+    log "启动前端..."
+
+    cd "$SCRIPT_DIR/frontend"
+    if [ ! -d "node_modules" ]; then
+        log "安装前端依赖..."
+        npm install --silent 2>&1 | tail -3
+    fi
+
+    nohup npx vite --host 0.0.0.0 --port 5173 \
+        > "$LOG_DIR/frontend.log" 2>&1 &
+    echo $! > "$FRONTEND_PID_FILE"
+
+    # 等待前端就绪
+    for i in $(seq 1 15); do
+        if curl -s http://localhost:5173 > /dev/null 2>&1; then
+            ok "前端已启动 → http://localhost:5173 (PID: $(cat $FRONTEND_PID_FILE))"
+            return
+        fi
+        sleep 0.5
+    done
+    warn "前端启动中... 查看日志: tail -f $LOG_DIR/frontend.log"
+}
+
+show_status() {
+    echo ""
+    echo "=== Web-Lite 数据审核平台 状态 ==="
+    echo ""
+
+    if is_running "$BACKEND_PID_FILE" "后端"; then
+        echo -e "  后端:  ${GREEN}● 运行中${NC}  PID: $(cat $BACKEND_PID_FILE)  → http://localhost:9000"
+    else
+        echo -e "  后端:  ${RED}○ 未运行${NC}"
+    fi
+
+    if is_running "$FRONTEND_PID_FILE" "前端"; then
+        echo -e "  前端:  ${GREEN}● 运行中${NC}  PID: $(cat $FRONTEND_PID_FILE)  → http://localhost:5173"
+    else
+        echo -e "  前端:  ${RED}○ 未运行${NC}"
+    fi
+
+    echo ""
+    echo "  API 文档: http://localhost:9000/docs"
+    echo "  默认账号: admin / 123456"
+    echo "  日志目录: $LOG_DIR/"
+    echo ""
+}
+
+show_logs() {
+    local target=${1:-all}
+    case "$target" in
+        backend|b)  tail -f "$LOG_DIR/backend.log" ;;
+        frontend|f) tail -f "$LOG_DIR/frontend.log" ;;
+        *)          tail -f "$LOG_DIR/backend.log" "$LOG_DIR/frontend.log" ;;
+    esac
+}
+
+case "${1:-start}" in
+    start)
+        ensure_dirs
+        log "=== 启动服务 ==="
+        start_backend
+        start_frontend
+        echo ""
+        ok "全部服务已启动"
+        echo "  前端: http://localhost:5173"
+        echo "  后端: http://localhost:9000"
+        echo "  文档: http://localhost:9000/docs"
+        ;;
+
+    stop)
+        log "=== 停止服务 ==="
+        stop_all
+        ;;
+
+    restart)
+        log "=== 重启服务 ==="
+        stop_all
+        sleep 1
+        ensure_dirs
+        start_backend
+        start_frontend
+        ok "全部服务已重启"
+        ;;
+
+    status|s)
+        show_status
+        ;;
+
+    logs|l)
+        show_logs "$2"
+        ;;
+
+    build)
+        log "=== 构建生产版本 ==="
+        cd "$SCRIPT_DIR/backend" && source venv/bin/activate
+        log "构建后端..."
+        pip install -r requirements.txt -q
+        ok "后端依赖已安装"
+
+        cd "$SCRIPT_DIR/frontend"
+        log "构建前端..."
+        npm run build
+        ok "前端构建完成 → frontend/dist/"
+        ;;
+
+    test|t)
+        log "=== 运行测试 ==="
+        cd "$SCRIPT_DIR/backend" && source venv/bin/activate
+        python -m pytest tests/ -v --tb=short "$@"
+        ;;
+
+    *)
+        echo "用法: ./run.sh {start|stop|restart|status|logs|build|test}"
+        echo ""
+        echo "  start    启动前后端服务 (默认)"
+        echo "  stop     停止所有服务"
+        echo "  restart  重启所有服务"
+        echo "  status   查看服务状态"
+        echo "  logs     查看日志 (backend/frontend/all)"
+        echo "  build    构建生产版本"
+        echo "  test     运行后端测试"
+        ;;
+esac