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-be/internal/service/record.go

@@ -19,26 +19,46 @@ type RecordInput struct {
 	NumValue    float64
 	Category    string
 	ImageURL    string
+	ImageFileID string
 	Extra       datatypes.JSON
 	OccurredAt  *time.Time
 }
 
 // ListRecords 列出宠物的健康记录（可按 type 过滤）
-func (s *Service) ListRecords(userID, petID uint, recordType string) ([]model.HealthRecord, error) {
+func (s *Service) ListRecords(userID, petID string, recordType string, offset, limit int) ([]model.HealthRecord, int64, error) {
 	if _, err := s.ownedPet(userID, petID); err != nil {
-		return nil, err
+		return nil, 0, err
 	}
-	q := s.db.Where("pet_id = ?", petID)
+	q := s.db.Model(&model.HealthRecord{}).Where("pet_id = ?", petID)
 	if recordType != "" {
 		q = q.Where("type = ?", recordType)
 	}
+	var total int64
+	if err := q.Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
 	var records []model.HealthRecord
-	err := q.Order("occurred_at desc, id desc").Find(&records).Error
-	return records, err
+	err := q.Order("occurred_at desc, id desc").Offset(offset).Limit(limit).Find(&records).Error
+	// 用 file_id 回填图片 URL
+	ids := make([]string, 0)
+	for i := range records {
+		if records[i].ImageFileID != "" && records[i].ImageURL == "" {
+			ids = append(ids, records[i].ImageFileID)
+		}
+	}
+	if len(ids) > 0 {
+		urls := s.fileURLs(ids)
+		for i := range records {
+			if records[i].ImageURL == "" {
+				records[i].ImageURL = urls[records[i].ImageFileID]
+			}
+		}
+	}
+	return records, total, err
 }
 
 // CreateRecord 新增健康记录；weight 类型同步更新宠物体重
-func (s *Service) CreateRecord(userID, petID uint, in RecordInput) (*model.HealthRecord, error) {
+func (s *Service) CreateRecord(userID, petID string, in RecordInput) (*model.HealthRecord, error) {
 	pet, err := s.ownedPet(userID, petID)
 	if err != nil {
 		return nil, err
@@ -50,7 +70,11 @@ func (s *Service) CreateRecord(userID, petID uint, in RecordInput) (*model.Healt
 	rec := model.HealthRecord{
 		PetID: petID, UserID: userID, Type: in.Type, Icon: in.Icon,
 		Title: in.Title, Description: in.Description, NumValue: in.NumValue,
-		Category: in.Category, ImageURL: in.ImageURL, Extra: in.Extra, OccurredAt: occurred,
+		Category: in.Category, ImageURL: in.ImageURL, ImageFileID: in.ImageFileID, Extra: in.Extra, OccurredAt: occurred,
+	}
+	// 传了 file_id 未传 url 时，用 file 表的 url 回填 ImageURL 便于直接展示
+	if in.ImageFileID != "" && rec.ImageURL == "" {
+		rec.ImageURL = s.fileURL(in.ImageFileID)
 	}
 	if err := s.db.Transaction(func(tx *gorm.DB) error {
 		if err := tx.Create(&rec).Error; err != nil {
@@ -70,7 +94,7 @@ func (s *Service) CreateRecord(userID, petID uint, in RecordInput) (*model.Healt
 }
 
 // DeleteRecord 删除记录
-func (s *Service) DeleteRecord(userID, recordID uint) error {
+func (s *Service) DeleteRecord(userID, recordID string) error {
 	res := s.db.Where("id = ? AND user_id = ?", recordID, userID).Delete(&model.HealthRecord{})
 	if res.Error != nil {
 		return res.Error
@@ -85,10 +109,11 @@ func (s *Service) DeleteRecord(userID, recordID uint) error {
 type WeightPoint struct {
 	Value      float64   `json:"value"`
 	OccurredAt time.Time `json:"occurred_at"`
+	Note       string    `json:"note"` // 记录时填的备注
 }
 
 // WeightTrend 最近 N 次体重（升序）
-func (s *Service) WeightTrend(userID, petID uint, limit int) ([]WeightPoint, error) {
+func (s *Service) WeightTrend(userID, petID string, limit int) ([]WeightPoint, error) {
 	if _, err := s.ownedPet(userID, petID); err != nil {
 		return nil, err
 	}
@@ -102,7 +127,7 @@ func (s *Service) WeightTrend(userID, petID uint, limit int) ([]WeightPoint, err
 	}
 	points := make([]WeightPoint, 0, len(records))
 	for i := len(records) - 1; i >= 0; i-- {
-		points = append(points, WeightPoint{Value: records[i].NumValue, OccurredAt: records[i].OccurredAt})
+		points = append(points, WeightPoint{Value: records[i].NumValue, OccurredAt: records[i].OccurredAt, Note: records[i].Description})
 	}
 	return points, nil
 }