feat(companion): 全面确立以陪吃·陪喝·陪唱为主的核心架构，重构首屏推荐阵容与歌声试听

server/src/core/theme/theme.manager.ts

@@ -0,0 +1,113 @@
+/**
+ * 陪玩系统双主题色彩管理系统
+ * 严格遵照 UI/UX 规范：无 Emoji、全矢量的色彩 Token 体系
+ */
+
+export const THEME_KEYS = {
+  COOL: 'cool',
+  WARM: 'warm'
+} as const;
+
+export type ThemeKey = (typeof THEME_KEYS)[keyof typeof THEME_KEYS];
+
+export interface ThemeTokens {
+  bgPrimary: string;
+  bgSurface: string;
+  bgSurfaceElevated: string;
+  bgSurfaceGlass: string;
+  colorBrand: string;
+  colorBrandLight: string;
+  colorBrandGold: string;
+  colorBrandGlow: string;
+  colorBrandGradient: string;
+  borderSubtle: string;
+  borderFocus: string;
+  textPrimary: string;
+  textSecondary: string;
+  textMuted: string;
+  shadowBrand: string;
+}
+
+export interface ThemeItem {
+  key: ThemeKey;
+  name: string;
+  description: string;
+  tokens: ThemeTokens;
+}
+
+export const THEMES: Record<ThemeKey, ThemeItem> = {
+  [THEME_KEYS.COOL]: {
+    key: THEME_KEYS.COOL,
+    name: '冷光暗夜',
+    description: '深邃暗夜黑与电竞靛蓝流光，专业沉浸质感',
+    tokens: {
+      bgPrimary: '#0A0F1D',
+      bgSurface: '#151D30',
+      bgSurfaceElevated: '#1E2942',
+      bgSurfaceGlass: 'rgba(21, 29, 48, 0.85)',
+      colorBrand: '#6366F1',
+      colorBrandLight: '#818CF8',
+      colorBrandGold: '#F59E0B',
+      colorBrandGlow: 'rgba(99, 102, 241, 0.35)',
+      colorBrandGradient: 'linear-gradient(135deg, #6366F1, #8B5CF6)',
+      borderSubtle: '#1E293B',
+      borderFocus: '#4F46E5',
+      textPrimary: '#F8FAFC',
+      textSecondary: '#94A3B8',
+      textMuted: '#64748B',
+      shadowBrand: '0 8rpx 24rpx rgba(99, 102, 241, 0.35)'
+    }
+  },
+  [THEME_KEYS.WARM]: {
+    key: THEME_KEYS.WARM,
+    name: '暖阳赤焰',
+    description: '深邃暖焦糖褐与暖阳曜橙流光，热情温馨有活力',
+    tokens: {
+      bgPrimary: '#140E0A',
+      bgSurface: '#221711',
+      bgSurfaceElevated: '#2E1F17',
+      bgSurfaceGlass: 'rgba(34, 23, 17, 0.85)',
+      colorBrand: '#F97316',
+      colorBrandLight: '#FB923C',
+      colorBrandGold: '#F59E0B',
+      colorBrandGlow: 'rgba(249, 115, 22, 0.35)',
+      colorBrandGradient: 'linear-gradient(135deg, #F97316, #F59E0B)',
+      borderSubtle: '#342217',
+      borderFocus: '#EA580C',
+      textPrimary: '#FFF7ED',
+      textSecondary: '#C7B5A7',
+      textMuted: '#8C7565',
+      shadowBrand: '0 8rpx 24rpx rgba(249, 115, 22, 0.35)'
+    }
+  }
+};
+
+export class ThemeManager {
+  private currentKey: ThemeKey = THEME_KEYS.COOL;
+
+  getCurrentThemeKey(): ThemeKey {
+    return this.currentKey;
+  }
+
+  getCurrentTheme(): ThemeItem {
+    return THEMES[this.currentKey];
+  }
+
+  getCurrentTokens(): ThemeTokens {
+    return this.getCurrentTheme().tokens;
+  }
+
+  switchTheme(key: ThemeKey): ThemeItem {
+    if (key in THEMES) {
+      this.currentKey = key;
+    } else {
+      // 非法或未知主题容错平滑降级至默认冷光暗夜
+      this.currentKey = THEME_KEYS.COOL;
+    }
+    return this.getCurrentTheme();
+  }
+
+  getAvailableThemes(): ThemeItem[] {
+    return Object.values(THEMES);
+  }
+}