feat(records): 训练勋章 UI 改造

- 勋章图标从 emoji 改为矢量 SVG 线性图标（utils/icons.js 新增 bolt/moon/diamond 路径及 white 变体）
- 命名改为累计语义（一周累计/半月累计/月度累计/双月累计/百日累计），并标注"非连续打卡"
- 进度条改回等距节点，解锁时填充正好抵达节点、满级满格
- 新增单枚解锁庆祝：持久化已见解锁集合，进入页面弹 toast + 节点 pop 动画
- 已解锁节点常驻显示勋章名 + 右上角 ✓ 角标，直观体现"已拥有"
- utils/storage.js 新增 totalDays（累计去重训练日），为勋章统计提供数据源

pages/records/records.js

@@ -14,6 +14,10 @@ Page({
     totalSessions: 0,
     maxDuration: 0,
     maxDurationText: '',
+    totalDays: 0,
+    trainingBadges: [],
+    badgeProgress: 0,
+    nextBadgeHint: '',
     currentYear: new Date().getFullYear(),
     currentMonth: new Date().getMonth() + 1,
     monthRecords: [],
@@ -69,6 +73,43 @@ Page({
       if (historyList.length >= 30) break
     }
 
+    // 累计训练天数勋章(里程碑进度条):统计口径=累计去重训练日(可中断)。
+    // 节点等距排列(间距一致、视觉整齐),填充在区间内线性插值,
+    // 解锁时填充正好抵达该节点,满级时填充满格。
+    const totalDays = stats.totalDays
+    const badgeDefs = config.trainingDayBadges
+    const n = badgeDefs.length
+    const maxDays = badgeDefs[n - 1].days
+    const TRACK_PAD = 4                       // 首尾留白,保证首尾节点/标签不溢出
+    const segWidth = n > 1 ? (100 - TRACK_PAD * 2) / (n - 1) : 0
+    const posOf = (i) => TRACK_PAD + i * segWidth
+    const trainingBadges = badgeDefs.map((b, i) => ({
+      ...b,
+      unlocked: totalDays >= b.days,
+      pos: Math.round(posOf(i) * 10) / 10
+    }))
+    let badgeProgress
+    if (totalDays <= 0) {
+      badgeProgress = 0
+    } else if (totalDays >= maxDays) {
+      badgeProgress = 100
+    } else {
+      let i = 0
+      while (i < n - 1 && totalDays >= badgeDefs[i + 1].days) i++
+      const ratio = (totalDays - badgeDefs[i].days) / (badgeDefs[i + 1].days - badgeDefs[i].days)
+      badgeProgress = Math.round((posOf(i) + ratio * segWidth) * 10) / 10
+    }
+
+    // 单枚解锁庆祝反馈:对比持久化"已见解锁集合",只庆祝新增勋章。
+    // 首次运行(无存储)仅初始化集合,避免老用户一打开就被历史勋章刷屏。
+    const unlockedDays = trainingBadges.filter(b => b.unlocked).map(b => b.days)
+    const newlySet = this._checkBadgeCelebration(unlockedDays)
+    if (newlySet) trainingBadges.forEach(b => { b.justUnlocked = newlySet.has(b.days) })
+    const nextIdx = trainingBadges.findIndex(b => !b.unlocked)
+    const nextBadgeHint = nextIdx === -1
+      ? '全部勋章已解锁！'
+      : `还差 ${badgeDefs[nextIdx].days - totalDays} 天解锁「${badgeDefs[nextIdx].name}」`
+
     const theme = themeMod.getCurrentTheme()
     this.setData({
       theme,
@@ -78,6 +119,10 @@ Page({
       totalSessions: stats.totalSessions,
       maxDuration: stats.maxDuration,
       maxDurationText: util.formatDuration(stats.maxDuration),
+      totalDays,
+      trainingBadges,
+      badgeProgress,
+      nextBadgeHint,
       monthRecords: records,
       historyList,
       listMode: this.data.listMode || 'month',
@@ -245,5 +290,44 @@ Page({
     return {
       title: config.share.timelineTitle
     }
+  },
+
+  /**
+   * 点击勋章节点:显示勋章名称与解锁状态。
+   */
+  onBadgeTap(e) {
+    const days = Number(e.currentTarget.dataset.days)
+    const b = config.trainingDayBadges.find(x => x.days === days)
+    if (!b) return
+    const unlocked = this.data.totalDays >= days
+    wx.showToast({
+      title: unlocked ? `已解锁：${b.name}` : `再练 ${days - this.data.totalDays} 天解锁「${b.name}」`,
+      icon: 'none',
+      duration: 1800
+    })
+  },
+
+  /**
+   * 单枚勋章解锁庆祝:对比持久化的"已见解锁集合",只对新增的解锁弹 toast
+   * 并标记 justUnlocked(节点高亮动画)。首次运行(无存储)仅初始化集合、不庆祝,
+   * 避免老用户一打开就刷一堆历史勋章。返回新增天数集合(无新增返回 null)。
+   */
+  _checkBadgeCelebration(unlockedDays) {
+    const KEY = 'badge_celebrated'
+    const prev = wx.getStorageSync(KEY)
+    if (!Array.isArray(prev)) {
+      wx.setStorageSync(KEY, unlockedDays)
+      return null
+    }
+    const prevSet = new Set(prev)
+    const newly = unlockedDays.filter(d => !prevSet.has(d))
+    wx.setStorageSync(KEY, unlockedDays)
+    if (newly.length === 0) return null
+    const names = newly.map(d => {
+      const b = config.trainingDayBadges.find(x => x.days === d)
+      return b ? b.name : (d + '天')
+    })
+    wx.showToast({ title: '解锁勋章：' + names.join('、'), icon: 'none', duration: 2000 })
+    return new Set(newly)
   }
 })