feat: 灯条段排序。

src/stores/led-strip.store.tsx

@@ -1,11 +1,12 @@
 import { createStore } from 'solid-js/store';
-import { DisplayConfig } from '../models/display-config';
 import { LedStripConfig, LedStripPixelMapper } from '../models/led-strip-config';
 
 export const [ledStripStore, setLedStripStore] = createStore({
-  displays: new Array<DisplayConfig>(),
   strips: new Array<LedStripConfig>(),
   mappers: new Array<LedStripPixelMapper>(),
-  colors: new Uint8ClampedArray(),
-  sortedColors: new Array<string>(),
+  colors: new Array<string>(),
+  sortedColors: new Uint8ClampedArray(),
+  get totalLedCount() {
+    return Math.max(0, ...ledStripStore.mappers.map((m) => Math.max(m.start, m.end)));
+  },
 });