feat: 养护模板/社区运营/体重趋势/计划日历 + 雪花ID重构 + 文件表与图片上传

后端
- 主键改雪花字符串 ID（pkg/idgen + Base.BeforeCreate），全表外键/JWT/中间件随之调整
- 新增 files 表：/api/upload 按 MD5 去重，返回 {id,url,md5}，服务端只收图片
- 头像/记录附图/帖子图改 file_id 关联，读取解析为 URL
- 养护模板（物种×阶段）后台可配 + AI 生成草稿；建档按模板生成任务/计划/提醒
- 社区 AI 运营：虚拟账号池 + 每日定时/手动生成，帖子带 AI 标
- 计划路线图节点带真实日期；首页周历与计划日历同源；新增 day-plan 当日安排
- 体重趋势接口带备注；记录列表分页

小程序
- 公共图片上传 utils/upload.js（仅图片）；记录拍照/我的头像/社区发图三处接入
- 首页日历点选查当日任务；记录页体重趋势可点看备注 + 时间轴分页折叠
- 计划页日历点选查当日计划；自定义 tabBar 高度调整

后台（React）
- 新增「养护模板」「社区运营」页；用户管理加机器人筛选

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

pets-fe/pages/plan/plan.js

@@ -1,6 +1,18 @@
 const store = require('../../utils/store.js');
 const api = require('../../utils/api.js');
 
+// "2026-07-04" → "7月4日"
+function fmtMD(date) {
+  if (!date) return '';
+  const p = date.split('-');
+  if (p.length < 3) return '';
+  return +p[1] + '月' + +p[2] + '日';
+}
+
+function pad2(n) {
+  return n < 10 ? '0' + n : '' + n;
+}
+
 function buildCells(year, month, taskedDays, today) {
   const first = new Date(year, month - 1, 1);
   const lead = (first.getDay() + 6) % 7; // 周一为一周起点
@@ -10,7 +22,7 @@ function buildCells(year, month, taskedDays, today) {
   const cells = [];
   for (let i = 0; i < lead; i++) cells.push({ day: 0 });
   for (let d = 1; d <= daysInMonth; d++) {
-    cells.push({ day: d, tasked: !!set[d], today: d === today });
+    cells.push({ day: d, date: year + '-' + pad2(month) + '-' + pad2(d), tasked: !!set[d], today: d === today });
   }
   return cells;
 }
@@ -23,6 +35,8 @@ Page({
     calCells: [],
     calLabel: '',
     calLoaded: false,
+    selectedCalDate: '',
+    dayDetail: null,
     aiInput: '',
     aiPlan: null,
     aiBusy: false,
@@ -56,7 +70,12 @@ Page({
     if (!id) return;
     api
       .getPlan(id)
-      .then((plan) => this.setData({ plan }))
+      .then((plan) => {
+        if (plan && plan.tasks) {
+          plan.tasks = plan.tasks.map((t) => ({ ...t, dateLabel: fmtMD(t.date) }));
+        }
+        this.setData({ plan });
+      })
       .catch(() => this.setData({ plan: null }));
   },
   loadCalendar() {
@@ -70,6 +89,29 @@ Page({
           calLabel: `${res.year} 年 ${res.month} 月`,
           calLoaded: true,
         });
+        if (res.today) {
+          this.selectCalDay(res.year + '-' + pad2(res.month) + '-' + pad2(res.today));
+        }
+      })
+      .catch(() => {});
+  },
+  onTapCalDay(e) {
+    const date = e.currentTarget.dataset.date;
+    if (date) this.selectCalDay(date);
+  },
+  selectCalDay(date) {
+    const id = store.currentPetId();
+    if (!id) return;
+    this.setData({ selectedCalDate: date });
+    api
+      .dayPlan(id, date)
+      .then((res) => {
+        const nodes = (res.plan_nodes || []).map((n) => ({ title: n.title, desc: n.description, done: n.done }));
+        const tasks = (res.tasks || []).map((t) => ({ title: t.title, desc: t.description, done: t.done }));
+        const reminders = (res.reminders || []).map((r) => ({ title: r.title }));
+        this.setData({
+          dayDetail: { date, nodes, tasks, reminders, empty: !nodes.length && !tasks.length && !reminders.length },
+        });
       })
       .catch(() => {});
   },

pets-fe/pages/plan/plan.wxml

@@ -27,7 +27,7 @@
     </view>
     <view class="timeline">
       <view wx:for="{{plan.tasks}}" wx:key="id" class="time-block">
-        <view class="time-label">{{item.day_label}}</view>
+        <view class="time-label">{{item.day_label}}<text wx:if="{{item.dateLabel}}" class="time-date">{{item.dateLabel}}</text></view>
         <view class="plan-task {{item.done ? 'done' : ''}}">
           <view class="pk-check" catchtap="toggleTimelineTask" data-id="{{item.id}}">{{item.done ? '✓' : ''}}</view>
           <view class="pk-body" data-type="{{item.sheet_type}}" bindtap="openSheet">
@@ -46,9 +46,26 @@
       <view class="cal-grid">
         <text class="cal-w">一</text><text class="cal-w">二</text><text class="cal-w">三</text><text class="cal-w">四</text><text class="cal-w">五</text><text class="cal-w">六</text><text class="cal-w">日</text>
         <view wx:for="{{calCells}}" wx:key="index"
-              class="cal-cell {{item.today ? 'today' : ''}} {{item.tasked ? 'tasked' : ''}} {{item.day === 0 ? 'blank' : ''}}">{{item.day || ''}}</view>
+              class="cal-cell {{item.today ? 'today' : ''}} {{item.tasked ? 'tasked' : ''}} {{item.day === 0 ? 'blank' : ''}} {{item.date && item.date === selectedCalDate ? 'sel' : ''}}"
+              data-date="{{item.date}}" bindtap="onTapCalDay">{{item.day || ''}}</view>
       </view>
     </view>
+
+    <view wx:if="{{dayDetail}}" class="day-detail">
+      <view class="dd-title">{{dayDetail.date}} 的安排</view>
+      <block wx:if="{{!dayDetail.empty}}">
+        <view wx:for="{{dayDetail.nodes}}" wx:key="title" class="dd-item">
+          <text class="dd-tag plan">计划</text><text class="dd-b {{item.done ? 'done' : ''}}">{{item.title}}</text>
+        </view>
+        <view wx:for="{{dayDetail.tasks}}" wx:key="title" class="dd-item">
+          <text class="dd-tag task">任务</text><text class="dd-b {{item.done ? 'done' : ''}}">{{item.title}}</text>
+        </view>
+        <view wx:for="{{dayDetail.reminders}}" wx:key="title" class="dd-item">
+          <text class="dd-tag rem">提醒</text><text class="dd-b">{{item.title}}</text>
+        </view>
+      </block>
+      <view wx:else class="dd-empty">这天没有安排</view>
+    </view>
   </view>
 
   <!-- AI 计划 -->

pets-fe/pages/plan/plan.wxss

@@ -17,6 +17,7 @@
 .timeline::before{content:"";position:absolute;left:12rpx;top:12rpx;bottom:16rpx;width:4rpx;background:#E8DED0}
 .time-block{position:relative;margin-bottom:28rpx}
 .time-label{font-weight:900;color:var(--primary-dark);font-size:26rpx;margin-bottom:16rpx;position:relative}
+.time-date{margin-left:12rpx;font-weight:600;color:var(--muted);font-size:22rpx}
 .time-label::before{
   content:"";position:absolute;left:-34rpx;top:8rpx;width:24rpx;height:24rpx;border-radius:50%;
   background:var(--primary);border:6rpx solid #fff;box-shadow:0 0 0 4rpx #F5D5A8;
@@ -44,6 +45,19 @@
 .cal-cell.blank{background:transparent}
 .cal-cell.today{background:#FFF3DF;color:var(--primary-dark)}
 .cal-cell.tasked::after{content:"";position:absolute;bottom:10rpx;width:10rpx;height:10rpx;border-radius:50%;background:var(--green)}
+.cal-cell.sel{background:var(--primary);color:#fff}
+.cal-cell.sel.tasked::after{background:#fff}
+
+.day-detail{margin-top:24rpx;border-top:1rpx solid var(--line);padding-top:24rpx}
+.dd-title{font-weight:900;font-size:28rpx;margin-bottom:16rpx}
+.dd-item{display:flex;align-items:center;gap:16rpx;padding:14rpx 0}
+.dd-tag{flex:none;font-size:20rpx;font-weight:700;padding:2rpx 12rpx;border-radius:999rpx}
+.dd-tag.plan{background:#FFF2DC;color:var(--primary-dark)}
+.dd-tag.task{background:#E6F4EA;color:#2E7D5B}
+.dd-tag.rem{background:#EAF0FF;color:#3B6BE5}
+.dd-b{font-size:27rpx;color:var(--text)}
+.dd-b.done{text-decoration:line-through;color:var(--muted)}
+.dd-empty{padding:20rpx 0;color:var(--muted);font-size:26rpx;text-align:center}
 
 .extracted{display:grid;grid-template-columns:1fr 1fr;gap:16rpx;margin:24rpx 0}
 .extract{background:#FBFAF8;border-radius:30rpx;padding:20rpx;font-size:24rpx}