feat(fe): 新增 seg-tabs 与 stat-ring 组件

seg-tabs 合并三套长得像但尺寸各不同的横向切换：plan 的 .inline-tabs
（灰槽白块）、community 的 .feed-tab（白药丸+阴影）、record 的 .rf-chip
（白药丸无阴影，高度还差 10rpx）。variant="solid|pill" 二选一，items
同时支持字符串数组和 {key,label} 数组。

stat-ring 是首页门面用的完成度环。用 SVG data-uri 画，和 record 页的
体重折线图同一套路——canvas 在 scroll-view 里的层级、滚动跟随和截图
行为全是坑。中心内容走 slot。

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

pets-fe/preview-v2.html

@@ -526,3 +526,46 @@ view,text{box-sizing:border-box}
   </div>
 </div>
 
+<h2>11 · 首页门面（方案 C）</h2>
+<p class="hint">状态环 + 状态 chip 做门面，今日任务提到首屏，4 色分类块替掉 8 宫格 emoji，最后一块深色 CTA。</p>
+<div class="stage">
+  <div class="card" style="display:flex;gap:14px;align-items:center">
+    <div style="position:relative;width:90px;height:90px;flex:none">
+      <img src="data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20100%20100%22%3E%3Ccircle%20cx%3D%2250%22%20cy%3D%2250%22%20r%3D%2242%22%20fill%3D%22none%22%20stroke%3D%22%23FFE6BA%22%20stroke-width%3D%228%22%20stroke-linecap%3D%22round%22%2F%3E%3Cg%20transform%3D%22rotate(-90%2050%2050)%22%3E%3Ccircle%20cx%3D%2250%22%20cy%3D%2250%22%20r%3D%2242%22%20fill%3D%22none%22%20stroke%3D%22%23F5A947%22%20stroke-width%3D%228%22%20stroke-linecap%3D%22round%22%20stroke-dasharray%3D%22263.9%22%20stroke-dashoffset%3D%2273.9%22%2F%3E%3C%2Fg%3E%3C%2Fsvg%3E" style="width:100%;height:100%;display:block">
+      <div style="position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center">
+        <div style="font-size:var(--fs-xl);font-weight:var(--fw-b);line-height:1">72<span style="font-size:var(--fs-cap)">%</span></div>
+        <div style="font-size:var(--fs-cap);color:var(--muted)">完成度</div>
+      </div>
+    </div>
+    <div style="flex:1;min-width:0">
+      <div style="font-size:var(--fs-lg);font-weight:var(--fw-b)">小橘今天状态不错</div>
+      <div class="muted" style="font-size:var(--fs-sm);margin-top:2px">还有 3 件事没做完</div>
+      <div class="row" style="gap:6px;margin-top:8px">
+        <span class="chip green"><i class="pt-i pt-i-trend" style="width:12px;height:12px"></i> 体重稳定</span>
+        <span class="chip"><i class="pt-i pt-i-warn" style="width:12px;height:12px"></i> 驱虫将到期</span>
+      </div>
+    </div>
+  </div>
+
+  <div class="card">
+    <div class="section-head"><span class="sh-title">今日任务</span><span class="link">管理</span></div>
+    <div class="task-list">
+      <div class="task done"><span class="circle"><i class="pt-i pt-i-check" style="width:11px;height:11px"></i></span><div class="task-text"><div class="tt-b">早餐喂食</div></div></div>
+      <div class="task"><span class="circle"></span><div class="task-text"><div class="tt-b">记录体重</div><div class="tt-p">上次 4.2kg</div></div><span class="priority">重要</span></div>
+      <div class="task"><span class="circle"></span><div class="task-text"><div class="tt-b">梳毛 10 分钟</div></div></div>
+    </div>
+  </div>
+
+  <div class="card">
+    <div class="section-head"><span class="sh-title">快速记录</span></div>
+    <div class="grid4" style="grid-template-columns:repeat(4,1fr)">
+      <div class="qk tone-1"><i class="pt-i pt-i-weight" style="width:22px;height:22px"></i><span>体重</span></div>
+      <div class="qk tone-2"><i class="pt-i pt-i-food" style="width:22px;height:22px"></i><span>饮食</span></div>
+      <div class="qk tone-3"><i class="pt-i pt-i-symptom" style="width:22px;height:22px"></i><span>异常</span></div>
+      <div class="qk tone-4"><i class="pt-i pt-i-photo" style="width:22px;height:22px"></i><span>照片</span></div>
+    </div>
+  </div>
+
+  <div class="btn btn-dark btn-block"><i class="pt-i pt-i-ai" style="width:16px;height:16px"></i> 问问 AI 养宠助手</div>
+</div>
+