feat: festive Chinese red background and prize config unification

- Change all big screen backgrounds to pure Chinese red (#c41230)
- Remove vignette effect for consistent display on different screens
- Unify all prize data to match prizes.json configuration
- Add demo participants fallback when no data imported
- Fix particle visibility reset in startGalaxy()

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/client-screen/src/assets/styles/global.scss

@@ -10,7 +10,8 @@ html, body {
   width: 100%;
   height: 100%;
   overflow: hidden;
-  background: $color-bg-dark;
+  // Chinese New Year festive pure red background
+  background: #c41230;
   font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
   color: $color-text-light;
   -webkit-font-smoothing: antialiased;

packages/client-screen/src/assets/styles/variables.scss

@@ -11,10 +11,10 @@ $color-gold-light: #ffd966;
 $color-gold-dark: #d4a84b;
 $color-gold-deep: #b8923f;
 
-// Cinematic background
-$color-bg-dark: #0a0a0a;
-$color-bg-wine: #2a0a0e;
-$color-bg-gradient: linear-gradient(180deg, #2a0a0e 0%, #1a0808 50%, #0a0505 100%);
+// Cinematic background - Festive Chinese Red
+$color-bg-dark: #c41230;
+$color-bg-wine: #c41230;
+$color-bg-gradient: linear-gradient(180deg, #d4232a 0%, #c41230 50%, #a01028 100%);
 
 // Text
 $color-text-light: #ffffff;

packages/client-screen/src/pixi/BackgroundEffect.ts

@@ -2,7 +2,7 @@ import { Application, Container, Graphics, Ticker } from 'pixi.js';
 
 // Cinematic color palette
 const COLORS = {
-  wineRed: 0x2a0a0e,
+  wineRed: 0xc41230, // Festive bright Chinese red
   gold: 0xf0c239,
   goldDark: 0xd4a84b,
   goldLight: 0xffd700,
@@ -81,24 +81,8 @@ export class BackgroundEffect {
   }
 
   private drawVignette(): void {
-    const vignette = new Graphics();
-    const w = this.app.screen.width;
-    const h = this.app.screen.height;
-    const cx = w / 2;
-    const cy = h / 2;
-    const maxRadius = Math.sqrt(cx * cx + cy * cy);
-
-    // Create radial gradient effect with multiple circles
-    for (let i = 20; i >= 0; i--) {
-      const ratio = i / 20;
-      const radius = maxRadius * (0.3 + ratio * 0.7);
-      const alpha = ratio * 0.8;
-
-      vignette.circle(cx, cy, radius);
-      vignette.fill({ color: 0x000000, alpha });
-    }
-
-    this.app.stage.addChildAt(vignette, 0);
+    // Disabled vignette for pure solid color background
+    // Keep method for potential future use
   }
 
   private initDustParticles(): void {

packages/client-screen/src/pixi/LotteryMachine.ts

@@ -11,7 +11,7 @@ const COLORS = {
   red: 0xc21f30,
   redLight: 0xe63946,
   redDark: 0x8b0000,
-  wineRed: 0x2a0a0e,
+  wineRed: 0xc41230, // Festive bright Chinese red
   black: 0x000000,
   white: 0xffffff,
 };
@@ -245,9 +245,13 @@ export class LotteryMachine {
     this.confettiContainer.removeChildren();
     this.dimOverlay.clear();
 
-    // Reset particles
+    // Reset particles - restore visibility
     this.nameParticles.forEach((p) => {
       p.isWinner = false;
+      if (p.text) {
+        p.text.visible = true;
+        p.text.alpha = 1;
+      }
     });
 
     this.phase = 'galaxy';

packages/client-screen/src/views/HorseRaceView.vue

@@ -138,7 +138,7 @@ $color-text-muted: #888;
   height: 100%;
   position: relative;
   overflow: hidden;
-  background: #0a0a0a;
+  background: #c41230;
 }
 
 .race-canvas {

packages/client-screen/src/views/LuckyDrawView.vue

@@ -144,12 +144,22 @@ function startGalaxy() {
   // Clear previous winners
   winners.value = [];
 
-  // 使用真实参与者数据（如果有的话）
-  const participants = realParticipants.length > 0 ? realParticipants : [];
-  
+  // 使用真实参与者数据，如果没有则使用演示数据
+  let participants = realParticipants.length > 0 ? realParticipants : [];
+
   if (participants.length === 0) {
-    console.warn('[抽奖] 无参与者数据，请先导入名单');
-    return;
+    console.warn('[抽奖] 无参与者数据，使用演示数据');
+    // 演示数据
+    participants = [
+      { id: 'demo1', name: '张三', department: '技术部', zodiac: 'horse', age: 30 },
+      { id: 'demo2', name: '李四', department: '市场部', zodiac: 'other', age: 28 },
+      { id: 'demo3', name: '王五', department: '财务部', zodiac: 'horse', age: 32 },
+      { id: 'demo4', name: '赵六', department: '人事部', zodiac: 'other', age: 26 },
+      { id: 'demo5', name: '钱七', department: '运营部', zodiac: 'horse', age: 35 },
+      { id: 'demo6', name: '孙八', department: '技术部', zodiac: 'other', age: 29 },
+      { id: 'demo7', name: '周九', department: '市场部', zodiac: 'horse', age: 31 },
+      { id: 'demo8', name: '吴十', department: '财务部', zodiac: 'other', age: 27 },
+    ];
   }
 
   // Set participants and start galaxy view