Initial commit

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

lib/tools_base/widget/sheet_handle_bar.dart

@@ -0,0 +1,17 @@
+import 'package:flutter/material.dart';
+
+/// 吸底弹窗顶部的拖动条（36×5 胶囊），全站 bottomSheet 共用。
+class SheetHandleBar extends StatelessWidget {
+  /// 深色弹窗默认白色 20% 透明；浅底或设计另配了色的弹窗自己传
+  final Color color;
+  const SheetHandleBar({super.key, this.color = const Color(0x33FFFFFF)});
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: 36,
+      height: 5,
+      decoration: BoxDecoration(color: color, borderRadius: BorderRadius.circular(100)),
+    );
+  }
+}