v9.5: 實作標籤完全不重疊算法

- 新增 _calculate_lane_conflicts_v2() 分開返回標籤重疊和線穿框分數
- 修改泳道選擇算法，優先選擇無標籤重疊的泳道
- 兩階段搜尋：優先側別無可用泳道則嘗試另一側
- 增強日誌輸出，顯示標籤範圍和詳細衝突分數

🤖 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>

frontend-react/tailwind.config.js

@@ -0,0 +1,38 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+  content: [
+    "./index.html",
+    "./src/**/*.{js,ts,jsx,tsx}",
+  ],
+  theme: {
+    extend: {
+      colors: {
+        primary: {
+          50: '#f0f4ff',
+          100: '#e0eafe',
+          200: '#c7d7fe',
+          300: '#a5b9fc',
+          400: '#8191f8',
+          500: '#667eea',
+          600: '#5b68e0',
+          700: '#4c52cd',
+          800: '#3e43a6',
+          900: '#363b83',
+        },
+        secondary: {
+          50: '#faf5ff',
+          100: '#f3e8ff',
+          200: '#e9d5ff',
+          300: '#d8b4fe',
+          400: '#c084fc',
+          500: '#764ba2',
+          600: '#6b4391',
+          700: '#5a3778',
+          800: '#4a2d61',
+          900: '#3d2550',
+        },
+      },
+    },
+  },
+  plugins: [],
+}