Refactored orchestrator for staged file handling, added structured prompt support, adjusted Feishu file handling

tools/shell/shell.go

@@ -94,6 +94,9 @@ func (t *Tool) Call(ctx context.Context, input string) (string, error) {
 	if runtime.GOOS == "windows" {
 		// Windows 下使用 cmd /C 执行，兼容 date、dir 等内建命令。
 		cmd = exec.CommandContext(runCtx, "cmd", "/C", trimmed)
+	} else if requiresShellParsing(trimmed) {
+		// 包含管道、重定向等语法时，必须交给 shell 解释。
+		cmd = exec.CommandContext(runCtx, "sh", "-c", trimmed)
 	} else {
 		cmd = exec.CommandContext(runCtx, base, parts[1:]...)
 	}
@@ -126,3 +129,7 @@ func normalizeWindowsCommand(command string) string {
 		return command
 	}
 }
+
+func requiresShellParsing(command string) bool {
+	return strings.ContainsAny(command, "|&;<>()$`\\\n")
+}