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/components/bottom-sheet/bottom-sheet.js

@@ -1,5 +1,6 @@
 const store = require('../../utils/store.js');
 const api = require('../../utils/api.js');
+const upload = require('../../utils/upload.js');
 
 function fmtDate(iso) {
   if (!iso) return '';
@@ -39,8 +40,10 @@ Component({
     optSel: {},
     dateVals: { vaccine: '2026-07-21', deworm: '2026-07-15' },
     wInput: '',
+    wNote: '',
     costAmount: '',
     postContent: '',
+    postImages: [],
     addName: '',
     addBirthday: '',
     addWeight: '',
@@ -81,6 +84,7 @@ Component({
         patch.optSel = {};
         patch.costAmount = '';
         patch.postContent = '';
+        patch.postImages = [];
         patch.addName = '';
         patch.addBirthday = '';
         patch.addWeight = '';
@@ -90,7 +94,10 @@ Component({
         patch.riskData = null;
         patch.saving = false;
       }
-      if (type === 'weight') patch.wInput = (pet.weight || '').replace('kg', '');
+      if (type === 'weight') {
+        patch.wInput = (pet.weight || '').replace('kg', '');
+        patch.wNote = '';
+      }
       if (type === 'editPet') {
         // 预填当前宠物档案
         patch.addName = pet.name || '';
@@ -185,8 +192,26 @@ Component({
       this.setData({ [`dateVals.${e.currentTarget.dataset.key}`]: e.detail.value });
     },
     onWInput(e) { this.setData({ wInput: e.detail.value }); },
+    onWNote(e) { this.setData({ wNote: e.detail.value }); },
     onCostInput(e) { this.setData({ costAmount: e.detail.value }); },
     onPostInput(e) { this.setData({ postContent: e.detail.value }); },
+    onPickPostImages() {
+      const left = 9 - this.data.postImages.length;
+      if (left <= 0) return wx.showToast({ title: '最多 9 张', icon: 'none' });
+      upload
+        .chooseAndUploadImages(left)
+        .then((list) => this.setData({ postImages: this.data.postImages.concat(list) }))
+        .catch((e) => {
+          if (e && e.canceled) return;
+          wx.showToast({ title: (e && e.message) || '上传失败', icon: 'none' });
+        });
+    },
+    onRemovePostImage(e) {
+      const i = e.currentTarget.dataset.index;
+      const arr = this.data.postImages.slice();
+      arr.splice(i, 1);
+      this.setData({ postImages: arr });
+    },
     onAddName(e) { this.setData({ addName: e.detail.value }); },
     onAddBirthday(e) { this.setData({ addBirthday: e.detail.value }); },
     onAddWeight(e) { this.setData({ addWeight: e.detail.value }); },
@@ -290,33 +315,24 @@ Component({
       if (!w) w = (this.data.pet.weight || '').replace('kg', '');
       const num = parseFloat(w) || 0;
       const weight = w.includes('kg') ? w : w + 'kg';
-      this.createAndClose({ type: 'weight', icon: '⚖️', title: '体重 ' + weight, num_value: num });
+      this.createAndClose({ type: 'weight', icon: '⚖️', title: '体重 ' + weight, num_value: num, description: (this.data.wNote || '').trim() });
     },
     onSavePhoto() {
       const id = store.currentPetId();
       if (!id) return this.close();
-      wx.chooseMedia({
-        count: 1,
-        mediaType: ['image'],
-        success: (res) => {
-          const path = res.tempFiles[0].tempFilePath;
-          wx.showLoading({ title: '上传中...' });
-          api
-            .uploadFile(path)
-            .then((up) =>
-              api.createRecord(id, { type: 'photo', icon: '📷', title: '成长照片', image_url: up.url }),
-            )
-            .then((saved) => {
-              wx.hideLoading();
-              this.triggerEvent('saved', saved);
-              this.close();
-            })
-            .catch((e) => {
-              wx.hideLoading();
-              wx.showToast({ title: e.message || '上传失败', icon: 'none' });
-            });
-        },
-      });
+      upload
+        .chooseAndUploadImage()
+        .then((f) =>
+          api.createRecord(id, { type: 'photo', icon: '📷', title: '成长照片', image_file_id: f.id, image_url: f.url }),
+        )
+        .then((saved) => {
+          this.triggerEvent('saved', saved);
+          this.close();
+        })
+        .catch((e) => {
+          if (e && e.canceled) return;
+          wx.showToast({ title: (e && e.message) || '上传失败', icon: 'none' });
+        });
     },
 
     // 组装宠物档案表单
@@ -416,7 +432,7 @@ Component({
           identity,
           content,
           tags: [tag],
-          images: [],
+          image_file_ids: this.data.postImages.map((i) => i.id),
         });
         this.triggerEvent('posted');
         this.close();