diff --git a/backend/apps/common/services/system_log_service.py b/backend/apps/common/services/system_log_service.py
index efe2d7bd..4ac8c61f 100644
--- a/backend/apps/common/services/system_log_service.py
+++ b/backend/apps/common/services/system_log_service.py
@@ -91,7 +91,7 @@ class SystemLogService:
         raw_lines = [ln for ln in raw.splitlines() if ln.strip()]
 
         # 解析日志行，提取时间戳用于排序
-        # 支持 JSON 格式日志（包含 asctime 字段）
+        # 支持 JSON 格式日志（包含 asctime 字段）和方括号格式 [2025-12-17 17:09:06]
         parsed: list[tuple[datetime | None, int, str]] = []
         for idx, line in enumerate(raw_lines):
             ts: datetime | None = None
@@ -104,6 +104,16 @@ class SystemLogService:
                         ts = datetime.strptime(asctime, "%Y-%m-%d %H:%M:%S")
                 except Exception:
                     ts = None
+            # 尝试解析方括号格式日志: [2025-12-17 17:09:06]
+            elif line.startswith("["):
+                try:
+                    # 提取第一个方括号内的时间戳
+                    end_bracket = line.find("]")
+                    if end_bracket > 1:
+                        time_str = line[1:end_bracket]
+                        ts = datetime.strptime(time_str, "%Y-%m-%d %H:%M:%S")
+                except Exception:
+                    ts = None
             parsed.append((ts, idx, line))
 
         # 按时间戳排序（无时间戳的行排在最后，保持原始顺序）
diff --git a/install.sh b/install.sh
index e84599d7..dd598d6b 100755
--- a/install.sh
+++ b/install.sh
@@ -388,6 +388,21 @@ fi
 # 准备 HTTPS 证书（无域名也可使用自签）
 generate_self_signed_cert
 
+# ==============================================================================
+# 预拉取 Worker 镜像（避免扫描时等待）
+# ==============================================================================
+step "预拉取 Worker 镜像..."
+DOCKER_USER=$(grep "^DOCKER_USER=" "$DOCKER_DIR/.env" 2>/dev/null | cut -d= -f2)
+DOCKER_USER=${DOCKER_USER:-yyhuni}
+WORKER_IMAGE="${DOCKER_USER}/xingrin-worker:${APP_VERSION}"
+
+info "正在拉取: $WORKER_IMAGE"
+if docker pull "$WORKER_IMAGE"; then
+    success "Worker 镜像拉取完成"
+else
+    warn "Worker 镜像拉取失败，扫描时会自动重试拉取"
+fi
+
 # ==============================================================================
 # 启动服务
 # ==============================================================================