feat(微信订阅): 接入歌曲排期模板并加固部署流程

订阅消息（小程序侧唯一能主动触达用户的通道）：
- 新增 server/utils/wechatSubscribeFields.ts：按微信字段类型裁剪值（thing≤20、
  phrase 必须 5 个汉字、time/date/character_string 各自上限），空白压成一行，
  北京时间 time 由 playTime 的开始时间生成，解析不出退化为当天 00:00。
- wechatSubscribeService 内置 SONG_SELECTED 模板（站长新给的那个模板 ID），
  并转发上述纯函数；notificationService.createSongSelectedNotification 现在会带上
  playDate/playTime/sequence，三个排期接口（schedule / publish / bulk-publish）补传 sequence。
- 新增 test/wechatSubscribeFields.test.mjs（10 例，node --test 全绿）。
- test-subscribe 管理接口支持 vars 覆盖并返回真实发送值，方便站长核对字段名。

部署流程（Gitea Actions 容器里没有 buildx 插件，旧流程在此硬失败）：
- 每个 job 各自安装/探测 docker-buildx（v0.19.3，走 gh-proxy 再退直连），
  不把 `buildx version` 当唯一依据；装不上时降级为普通 `docker build` 继续发布，
  不再因为缺插件整条流水线失败。

注意：SONG_SELECTED 的字段名（thing2/date4/time1/character_string3/phrase5）是按常见
命名推断的，需在公众平台后台核对；不一致时用环境变量覆盖，模板 ID 变更后老用户需重新授权。

old_playlist.vue

@@ -0,0 +1,114 @@
+<template>
+  <div class="flex flex-col space-y-8 pb-12 lg:pb-20 animate-in fade-in slide-in-from-bottom-4 duration-500">
+    <div class="flex flex-col space-y-2">
+      <h2 class="text-2xl font-bold tracking-tight text-zinc-100">鍥剧墖姝屽崟</h2>
+      <p class="text-sm text-zinc-500">閫夋嫨鏃ユ湡鐢熸垚骞挎挱鎺掓湡鍗＄墖骞跺垎浜?/p>
+    </div>
+    
+    <div class="flex flex-col gap-8">
+      <!-- 璁剧疆闈㈡澘 -->
+      <div class="w-full flex flex-col gap-6">
+        <div class="bg-zinc-900/40 border border-zinc-800 rounded-xl p-6 space-y-6 shadow-lg">
+          <h3 class="text-lg font-bold flex items-center gap-2 text-zinc-100 shrink-0">
+            <Layout class="w-4 h-4 text-blue-500" /> 鍗＄墖璁剧疆
+          </h3>
+
+          <div class="flex flex-col gap-5 items-end">
+            <!-- 鏃ユ湡閫夋嫨 -->
+            <div class="space-y-2 flex-1 w-full">
+              <label class="text-[11px] font-black uppercase text-zinc-600 tracking-wider">鎺掓湡鏃ユ湡</label>
+              
+              <!-- 绫讳技鎺掓湡绠＄悊鐨勬棩鏈熼€夋嫨鍣?-->
+              <AdminDatePicker
+                :modelValue="selectedDate"
+                @update:modelValue="selectedDate = $event"
+                @change="fetchSchedules"
+              />
+            </div>
+            
+            <button
+              :disabled="loading || schedules.length === 0"
+              class="w-full py-3 h-[54px] bg-blue-600 hover:bg-blue-500 text-white text-xs font-bold rounded-xl shadow-lg shadow-blue-900/20 transition-colors uppercase tracking-wider disabled:opacity-50 disabled:cursor-not-allowed flex items-center justify-center gap-2 shrink-0"
+              @click="showModal = true"
+            >
+              <ImageIcon class="w-4 h-4" />
+              {{ loading ? '鍔犺浇涓?..' : (schedules.length === 0 ? '璇ユ棩鏈熸棤鎺掓湡' : '鐢熸垚鍗＄墖') }}
+            </button>
+          </div>
+        </div>
+      </div>
+      
+      <!-- 棰勮鍖?-->
+      <div class="w-full flex flex-col gap-4">
+        <div v-if="schedules.length > 0" class="bg-zinc-900/40 border border-zinc-800 rounded-xl p-6 shadow-lg">
+          <h3 class="text-lg font-bold text-zinc-100 mb-4">鎺掓湡棰勮 ({{ schedules.length }} 棣?</h3>
+          <div class="space-y-3">
+            <div v-for="(schedule, index) in schedules" :key="schedule.id" class="flex items-center gap-3 p-3 bg-zinc-950/50 border border-zinc-800/50 rounded-lg">
+              <span class="text-blue-500 font-bold w-6">{{ index + 1 }}.</span>
+              <div class="flex-1 overflow-hidden">
+                <p class="text-sm text-zinc-200 font-medium truncate">{{ schedule.song?.title || schedule.title }}</p>
+                <p class="text-xs text-zinc-500 truncate">{{ schedule.song?.artist || schedule.artist }}</p>
+              </div>
+            </div>
+          </div>
+        </div>
+        <div v-else-if="!loading" class="flex flex-col items-center justify-center py-20 bg-zinc-900/20 border border-zinc-800/50 rounded-xl border-dashed">
+          <CalendarDays class="w-12 h-12 text-zinc-700 mb-4" />
+          <p class="text-zinc-500">璇ユ棩鏈熸病鏈夋帓鏈熺殑姝屾洸</p>
+        </div>
+      </div>
+    </div>
+    
+    <AdminPlaylistCardGenerator
+      :show="showModal"
+      :songs="schedules"
+      :default-title="`${selectedDate} 鏍″洯骞挎挱姝屽崟`"
+      @close="showModal = false"
+    />
+  </div>
+</template>
+
+<script setup>
+import { ref, onMounted } from 'vue'
+import { Layout, Image as ImageIcon, CalendarDays } from '@lucide/vue'
+  import AdminDatePicker from './AdminDatePicker.vue'
+  import AdminPlaylistCardGenerator from './PlaylistCardGenerator.vue'
+  import { useAuth } from '~/composables/useAuth'
+
+  const auth = useAuth()
+  
+  const selectedDate = ref(new Date().toISOString().split('T')[0])
+const schedules = ref([])
+const loading = ref(false)
+const showModal = ref(false)
+
+const fetchSchedules = async () => {
+    loading.value = true
+    try {
+      const response = await $fetch('/api/admin/schedule/full', {
+        ...auth.getAuthConfig(),
+        query: {
+          date: selectedDate.value,
+          includeDrafts: 'true'
+        }
+      })
+      if (response.success && response.data && response.data.schedules) {
+        schedules.value = response.data.schedules
+      } else {
+        schedules.value = []
+      }
+    } catch (error) {
+    console.error('Failed to fetch schedules:', error)
+    if (window.$showNotification) {
+      window.$showNotification('鑾峰彇鎺掓湡澶辫触', 'error')
+    }
+  } finally {
+    loading.value = false
+  }
+}
+
+onMounted(() => {
+  fetchSchedules()
+})
+
+</script>