feat: Install sqlx-cli if not present and run database migrations during setup

install.sh

@@ -238,9 +238,14 @@ RestartSec=5
 WantedBy=multi-user.target
 EOF
 
-    # 运行数据库迁移
+    # 安装 sqlx-cli（若未安装）并运行数据库迁移
+    export PATH="$HOME/.cargo/bin:$PATH"
+    if ! command -v sqlx &> /dev/null; then
+        cargo install sqlx-cli --no-default-features --features postgres
+    fi
     cd $INSTALL_DIR/src/server
-    DATABASE_URL="postgres://funmc:${DB_PASSWORD}@localhost/funmc" cargo sqlx migrate run
+    export DATABASE_URL="postgres://funmc:${DB_PASSWORD}@localhost/funmc"
+    sqlx migrate run
     
     # 启动服务
     systemctl daemon-reload