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/pet.go

@@ -20,9 +20,10 @@ type PetInput struct {
 	Weight   string
 	Stage    string
 	Age      string
-	Color    string
-	Breed    string
-	Goals    datatypes.JSON
+	Color        string
+	Breed        string
+	AvatarFileID string
+	Goals        datatypes.JSON
 }
 
 func normalizeWeight(w string) string {
@@ -37,19 +38,31 @@ func normalizeWeight(w string) string {
 }
 
 // ListPets 用户的全部宠物
-func (s *Service) ListPets(userID uint) ([]model.Pet, error) {
+func (s *Service) ListPets(userID string) ([]model.Pet, error) {
 	var pets []model.Pet
 	err := s.db.Where("user_id = ?", userID).Order("id asc").Find(&pets).Error
+	ids := make([]string, 0, len(pets))
+	for i := range pets {
+		ids = append(ids, pets[i].AvatarFileID)
+	}
+	urls := s.fileURLs(ids)
+	for i := range pets {
+		pets[i].AvatarURL = urls[pets[i].AvatarFileID]
+	}
 	return pets, err
 }
 
 // GetPet 取单只宠物（校验归属）
-func (s *Service) GetPet(userID, petID uint) (*model.Pet, error) {
-	return s.ownedPet(userID, petID)
+func (s *Service) GetPet(userID, petID string) (*model.Pet, error) {
+	p, err := s.ownedPet(userID, petID)
+	if err == nil && p != nil {
+		p.AvatarURL = s.fileURL(p.AvatarFileID)
+	}
+	return p, err
 }
 
 // CreatePet 新增宠物并生成默认数据
-func (s *Service) CreatePet(userID uint, in PetInput) (*model.Pet, error) {
+func (s *Service) CreatePet(userID string, in PetInput) (*model.Pet, error) {
 	pet := model.Pet{
 		UserID:       userID,
 		Name:         in.Name,
@@ -62,6 +75,7 @@ func (s *Service) CreatePet(userID uint, in PetInput) (*model.Pet, error) {
 		Age:          in.Age,
 		Color:        in.Color,
 		Breed:        in.Breed,
+		AvatarFileID: in.AvatarFileID,
 		HealthStatus: "正常",
 		Goals:        in.Goals,
 	}
@@ -77,7 +91,7 @@ func (s *Service) CreatePet(userID uint, in PetInput) (*model.Pet, error) {
 }
 
 // UpdatePet 更新宠物字段
-func (s *Service) UpdatePet(userID, petID uint, fields map[string]any) (*model.Pet, error) {
+func (s *Service) UpdatePet(userID, petID string, fields map[string]any) (*model.Pet, error) {
 	if _, err := s.ownedPet(userID, petID); err != nil {
 		return nil, err
 	}
@@ -91,13 +105,13 @@ func (s *Service) UpdatePet(userID, petID uint, fields map[string]any) (*model.P
 }
 
 // DeletePet 删除宠物并级联清除其记录/任务/计划/提醒/每日建议（不留孤儿数据）
-func (s *Service) DeletePet(userID, petID uint) error {
+func (s *Service) DeletePet(userID, petID string) error {
 	if _, err := s.ownedPet(userID, petID); err != nil {
 		return err
 	}
 	return s.db.Transaction(func(tx *gorm.DB) error {
 		// 先删计划明细（按 plan_id），再删计划
-		var planIDs []uint
+		var planIDs []string
 		tx.Model(&model.Plan{}).Where("pet_id = ?", petID).Pluck("id", &planIDs)
 		if len(planIDs) > 0 {
 			if err := tx.Where("plan_id IN ?", planIDs).Delete(&model.PlanTask{}).Error; err != nil {
@@ -117,7 +131,7 @@ func (s *Service) DeletePet(userID, petID uint) error {
 }
 
 // Onboarding 建首宠 + 标记用户已引导
-func (s *Service) Onboarding(userID uint, in PetInput) (*model.Pet, error) {
+func (s *Service) Onboarding(userID string, in PetInput) (*model.Pet, error) {
 	pet, err := s.CreatePet(userID, in)
 	if err != nil {
 		return nil, err
@@ -128,41 +142,55 @@ func (s *Service) Onboarding(userID uint, in PetInput) (*model.Pet, error) {
 	return pet, nil
 }
 
-// seedPetDefaults 为新宠生成默认今日任务、提醒、30 天计划
+// seedPetDefaults 为新宠按「物种 × 阶段」养护模板生成今日任务、提醒、30 天计划
 func (s *Service) seedPetDefaults(tx *gorm.DB, pet *model.Pet) error {
 	today := time.Now()
-	tasks := []model.DailyTask{
-		{PetID: pet.ID, UserID: pet.UserID, TaskDate: today, Title: "记录一次体重", Description: "幼年期建议每周至少记录 2 次", Priority: "重要"},
-		{PetID: pet.ID, UserID: pet.UserID, TaskDate: today, Title: "观察饮水和排便", Description: "换粮、应激都可能影响排便状态", SheetType: "poop"},
-		{PetID: pet.ID, UserID: pet.UserID, TaskDate: today, Title: "检查疫苗预约", Description: "第 2 针疫苗还有 5 天", SheetType: "vaccine"},
-	}
-	if err := tx.Create(&tasks).Error; err != nil {
-		return err
+	items := s.careTemplateItems(SpeciesOf(pet.Type), pet.Stage)
+
+	var tasks []model.DailyTask
+	var reminders []model.Reminder
+	var planTasks []model.PlanTask
+	for _, it := range items {
+		switch it.Kind {
+		case model.CareKindTask:
+			tasks = append(tasks, model.DailyTask{
+				PetID: pet.ID, UserID: pet.UserID, TaskDate: today,
+				Title: it.Title, Description: it.Description, Priority: it.Priority, SheetType: it.SheetType,
+			})
+		case model.CareKindPlan:
+			planTasks = append(planTasks, model.PlanTask{
+				Day: it.Day, DayLabel: it.DayLabel, Title: it.Title, Description: it.Description, SheetType: it.SheetType,
+			})
+		case model.CareKindReminder:
+			r := model.Reminder{
+				PetID: pet.ID, UserID: pet.UserID, Type: it.ReminderType,
+				Title: it.Title, Frequency: it.Frequency,
+			}
+			if it.OffsetDays > 0 {
+				due := today.AddDate(0, 0, it.OffsetDays)
+				r.NextDueDate = &due
+			}
+			reminders = append(reminders, r)
+		}
 	}
 
-	vaccineDue := today.AddDate(0, 0, 18)
-	dewormDue := today.AddDate(0, 0, 12)
-	reminders := []model.Reminder{
-		{PetID: pet.ID, UserID: pet.UserID, Type: model.ReminderVaccine, Title: "第 2 针疫苗", NextDueDate: &vaccineDue},
-		{PetID: pet.ID, UserID: pet.UserID, Type: model.ReminderDeworm, Title: "体内外驱虫", NextDueDate: &dewormDue},
-		{PetID: pet.ID, UserID: pet.UserID, Type: model.ReminderWeight, Title: "体重记录", Frequency: "每周二、周五"},
-		{PetID: pet.ID, UserID: pet.UserID, Type: model.ReminderMonthlyReport, Title: "月度报告", Frequency: "每月 1 日"},
+	if len(tasks) > 0 {
+		if err := tx.Create(&tasks).Error; err != nil {
+			return err
+		}
 	}
-	if err := tx.Create(&reminders).Error; err != nil {
-		return err
+	if len(reminders) > 0 {
+		if err := tx.Create(&reminders).Error; err != nil {
+			return err
+		}
 	}
 
 	start := today
 	end := today.AddDate(0, 0, 30)
 	plan := model.Plan{
 		PetID: pet.ID, UserID: pet.UserID, Kind: model.PlanThirtyDay, Stage: pet.Stage,
-		StartDate: &start, EndDate: &end, CompletionPct: 40, Status: "active",
-		Tasks: []model.PlanTask{
-			{Day: 0, DayLabel: "今天", Title: "观察排便状态", Description: "记录颜色、形态、次数，发现软便可连续观察。", SheetType: "taskDetail"},
-			{Day: 1, DayLabel: "明天", Title: "检查疫苗预约", Description: "距离下一针还有 5 天，提前确认医院和时间。", SheetType: "vaccine"},
-			{Day: 7, DayLabel: "第 7 天", Title: "体重趋势检查", Description: "幼年期每周称重，观察是否稳定增长。", SheetType: "weight"},
-			{Day: 14, DayLabel: "第 14 天", Title: "复盘饮食与便便", Description: "如果近期换粮，建议把换粮过程和异常记录合并查看。", SheetType: "taskDetail"},
-		},
+		StartDate: &start, EndDate: &end, CompletionPct: 0, Status: "active",
+		Tasks: planTasks,
 	}
 	return tx.Create(&plan).Error
 }