🎨 feat: Implement responsive design for SelectableButtonGroup component

This commit introduces a comprehensive responsive design system for the SelectableButtonGroup component that adapts to container width changes, particularly optimized for dynamic sidebar layouts.

## Key Features

### 1. Container Width Detection
- Added `useContainerWidth` hook using ResizeObserver API
- Real-time container width monitoring for responsive calculations
- Automatic layout adjustments based on available space

### 2. Intelligent Column Layout
Implements a 4-tier responsive system:
- **≤280px**: 1 column + tags (mobile portrait)
- **281-380px**: 2 columns + tags (narrow screens)
- **381-460px**: 3 columns - tags (general case, prioritizes readability)
- **>460px**: 3 columns + tags (wide screens, full feature display)

### 3. Dynamic Tag Visibility
- Tags automatically hide in medium-width containers (381-460px) to improve text readability
- Tags show in narrow and wide containers where space allows for optimal UX
- Responsive threshold ensures content clarity across all viewport sizes

### 4. Adaptive Grid Spacing
- Compact spacing `[4,4]` for containers ≤400px
- Standard spacing `[6,6]` for larger containers
- Additional `.sbg-compact` CSS class for fine-tuned styling in narrow layouts

### 5. Sidebar Integration
- Perfectly compatible with dynamic sidebar width: `clamp(280px, 24vw, 520px)`
- Automatically adjusts as sidebar scales with viewport changes
- Maintains optimal button density and information display at all sizes

## Technical Implementation

- **Hook**: `useContainerWidth.js` - ResizeObserver-based width detection
- **Component**: Enhanced `SelectableButtonGroup.jsx` with responsive logic
- **Styling**: Added `.sbg-compact` mode in `index.css`
- **Performance**: Efficient span calculation using `Math.floor(24 / perRow)`

## Benefits

- Improved UX across all screen sizes and sidebar configurations
- Better text readability through intelligent tag hiding
- Seamless integration with existing responsive sidebar system
- Maintains component functionality while optimizing space utilization

Closes: Responsive design implementation for model marketplace sidebar components

web/src/hooks/common/useContainerWidth.js

@@ -0,0 +1,52 @@
+/*
+Copyright (C) 2025 QuantumNous
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+For commercial licensing, please contact support@quantumnous.com
+*/
+
+import { useState, useEffect, useRef } from 'react';
+
+/**
+ * 检测容器宽度的 Hook
+ * @returns {[ref, width]} 容器引用和当前宽度
+ */
+export const useContainerWidth = () => {
+  const [width, setWidth] = useState(0);
+  const ref = useRef(null);
+
+  useEffect(() => {
+    const element = ref.current;
+    if (!element) return;
+
+    const resizeObserver = new ResizeObserver(entries => {
+      for (let entry of entries) {
+        const { width: newWidth } = entry.contentRect;
+        setWidth(newWidth);
+      }
+    });
+
+    resizeObserver.observe(element);
+
+    // 初始化宽度
+    setWidth(element.getBoundingClientRect().width);
+
+    return () => {
+      resizeObserver.disconnect();
+    };
+  }, []);
+
+  return [ref, width];
+};