improvement(wrapped): 清理主题系统，Wrapped 固定 Modern

- 移除 useWrappedTheme 与主题切换入口（仅保留 Modern 视觉）

- 封面/卡片/年份选择器/热力图等组件去掉 Win98/Gameboy/DOS 分支与样式

- 删除 themedHeatColor、CRT/像素字体相关样式，降低维护成本

frontend/components/wrapped/shared/WrappedYearSelector.vue

@@ -1,45 +1,6 @@
 <template>
-  <div class="year-selector" :class="selectorClass">
-    <!-- Game Boy 风格 -->
-    <div v-if="theme === 'gameboy'" class="year-gameboy">
-      <div class="gameboy-year-box">
-        <button
-          class="gameboy-arrow"
-          :disabled="!canGoPrev"
-          @click="prevYear"
-          aria-label="Previous year"
-        >◀</button>
-        <span class="gameboy-year-value">{{ modelValue }}</span>
-        <button
-          class="gameboy-arrow"
-          :disabled="!canGoNext"
-          @click="nextYear"
-          aria-label="Next year"
-        >▶</button>
-      </div>
-    </div>
-
-    <!-- Win98 风格 -->
-    <div v-else-if="theme === 'win98'" class="year-win98">
-      <div class="win98-year-box">
-        <button
-          class="win98-arrow"
-          :disabled="!canGoPrev"
-          @click="prevYear"
-          aria-label="Previous year"
-        >◄</button>
-        <span class="win98-year-value">{{ modelValue }}年</span>
-        <button
-          class="win98-arrow"
-          :disabled="!canGoNext"
-          @click="nextYear"
-          aria-label="Next year"
-        >►</button>
-      </div>
-    </div>
-
-    <!-- Modern 风格：下拉菜单（默认） -->
-    <div v-else class="year-modern">
+  <div class="year-selector">
+    <div class="year-modern">
       <div class="relative inline-flex items-center">
         <select
           class="appearance-none bg-transparent pr-5 pl-0 py-0.5 rounded-md wrapped-label text-xs text-[#00000066] text-right focus:outline-none focus-visible:ring-2 focus-visible:ring-[#07C160]/30 hover:bg-[#000000]/5 transition disabled:opacity-70 disabled:cursor-default"
@@ -81,8 +42,6 @@ const props = defineProps({
 
 const emit = defineEmits(['update:modelValue'])
 
-const { theme } = useWrappedTheme()
-
 const currentIndex = computed(() => props.years.indexOf(props.modelValue))
 const canGoPrev = computed(() => currentIndex.value > 0)
 const canGoNext = computed(() => currentIndex.value < props.years.length - 1)
@@ -106,10 +65,6 @@ const onSelectChange = (e) => {
   }
 }
 
-const selectorClass = computed(() => {
-  return `year-selector-${theme.value}`
-})
-
 // 全局左右键切换年份（所有主题）
 const handleKeydown = (e) => {
   if (props.years.length <= 1) return
@@ -144,102 +99,4 @@ onBeforeUnmount(() => {
   display: flex;
   align-items: center;
 }
-
-/* ========== Game Boy 风格 ========== */
-.year-gameboy {
-  font-family: 'Press Start 2P', 'Courier New', monospace;
-}
-
-.gameboy-year-box {
-  display: flex;
-  align-items: center;
-  gap: 4px;
-  background: #0f380f;
-  border: 3px solid #306230;
-  padding: 6px 8px;
-  box-shadow:
-    inset 2px 2px 0 #9bbc0f,
-    inset -2px -2px 0 #0f380f;
-}
-
-.gameboy-arrow {
-  background: #306230;
-  border: none;
-  color: #9bbc0f;
-  font-size: 8px;
-  padding: 4px 6px;
-  cursor: pointer;
-  transition: background 0.1s;
-}
-
-.gameboy-arrow:hover:not(:disabled) {
-  background: #8bac0f;
-  color: #0f380f;
-}
-
-.gameboy-arrow:disabled {
-  opacity: 0.3;
-  cursor: not-allowed;
-}
-
-.gameboy-year-value {
-  color: #9bbc0f;
-  font-size: 10px;
-  min-width: 40px;
-  text-align: center;
-  letter-spacing: 2px;
-}
-
-/* ========== Win98 风格 ========== */
-.year-win98 {
-  font-family: "MS Sans Serif", Tahoma, "Microsoft Sans Serif", "Segoe UI", sans-serif;
-  font-size: 11px;
-}
-
-.win98-year-box {
-  display: inline-flex;
-  align-items: center;
-  background: #c0c0c0;
-  padding: 2px;
-  border: 1px solid #808080;
-  box-shadow:
-    inset 1px 1px 0 #ffffff,
-    inset -1px -1px 0 #000000;
-}
-
-.win98-year-value {
-  min-width: 62px;
-  text-align: center;
-  color: #000000;
-  padding: 2px 8px;
-  background: #ffffff;
-  border: 1px solid #808080;
-  box-shadow:
-    inset 1px 1px 0 #000000,
-    inset -1px -1px 0 #ffffff;
-}
-
-.win98-arrow {
-  width: 24px;
-  height: 22px;
-  background: #c0c0c0;
-  border: 1px solid #808080;
-  box-shadow:
-    inset 1px 1px 0 #ffffff,
-    inset -1px -1px 0 #000000;
-  cursor: pointer;
-  font: inherit;
-  line-height: 1;
-}
-
-.win98-arrow:active:not(:disabled) {
-  box-shadow:
-    inset 1px 1px 0 #000000,
-    inset -1px -1px 0 #ffffff;
-}
-
-.win98-arrow:disabled {
-  opacity: 0.5;
-  cursor: not-allowed;
-}
 </style>