feat(logging): improve local and docker log handling

deploy.sh

@@ -85,7 +85,8 @@ cmd_deploy() {
             echo "  访问地址: http://localhost:${APP_PORT}"
             echo "  默认账号见环境变量 ADMIN_USERNAME/ADMIN_PASSWORD（未设置则为 admin/admin123）"
             echo ""
-            echo "  查看日志: $COMPOSE logs -f"
+            echo "  查看应用日志: ./deploy.sh logs"
+            echo "  查看容器输出: ./deploy.sh logs container"
             echo "  停止服务: $COMPOSE down"
             echo "  重启服务: $COMPOSE restart"
             echo "  重置数据: ./deploy.sh reset"
@@ -156,12 +157,24 @@ cmd_reset() {
 }
 
 cmd_logs() {
+    local mode="${1:-app}"
+    if [ "$mode" = "app" ]; then
+        local app_log
+        app_log="$ROOT_DIR/logs/app-$(date '+%Y-%m-%d').log"
+        mkdir -p "$ROOT_DIR/logs"
+        echo "跟踪应用文件日志: ${app_log}（Ctrl+C 退出）"
+        exec tail -n "${LOG_TAIL_LINES:-200}" -F "$app_log"
+    fi
+    if [ "$mode" != "container" ]; then
+        echo "用法: ./deploy.sh logs [app|container]"
+        exit 1
+    fi
     COMPOSE=$(detect_compose)
     if [ -z "$COMPOSE" ]; then
         echo "❌ 未检测到 docker compose"
         exit 1
     fi
-    $COMPOSE logs -f
+    $COMPOSE logs --tail "${LOG_TAIL_LINES:-200}" -f
 }
 
 cmd_migrate_mysql() {
@@ -271,7 +284,7 @@ cmd_help() {
     echo "    reset     删除所有数据并重置（需确认）"
     echo "    migrate-mysql  先启动 MySQL 并迁移 data/web.db"
     echo "    migrate   仅执行数据库结构迁移"
-    echo "    logs      查看实时日志"
+    echo "    logs [app|container]  查看应用文件日志（默认）或容器输出"
     echo "    stop      停止服务"
     echo "    restart   重启服务"
     echo "    dev       本地调试启动（后端 reload + 前端热更新）"
@@ -289,7 +302,7 @@ case "${1:-}" in
     reset)   cmd_reset   ;;
     migrate-mysql) cmd_migrate_mysql ;;
     migrate) cmd_migrate ;;
-    logs)    cmd_logs    ;;
+    logs)    shift; cmd_logs "${1:-app}" ;;
     stop)    cmd_stop    ;;
     restart) cmd_restart ;;
     dev)     cmd_dev     ;;