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/handler/record.go

@@ -19,18 +19,22 @@ type recordReq struct {
 	NumValue    float64        `json:"num_value"`
 	Category    string         `json:"category"`
 	ImageURL    string         `json:"image_url"`
+	ImageFileID string         `json:"image_file_id"`
 	Extra       datatypes.JSON `json:"extra"`
 	OccurredAt  string         `json:"occurred_at"`
 }
 
 // ListRecords GET /api/pets/:id/records?type=
 func (h *Handler) ListRecords(c *gin.Context) {
-	records, err := h.svc.ListRecords(middleware.UserID(c), uintParam(c, "id"), c.Query("type"))
+	var pq response.PageQuery
+	_ = c.ShouldBindQuery(&pq)
+	pq.Normalize()
+	records, total, err := h.svc.ListRecords(middleware.UserID(c), idParam(c, "id"), c.Query("type"), pq.Offset(), pq.Limit())
 	if err != nil {
 		respondErr(c, err)
 		return
 	}
-	response.OK(c, records)
+	response.OK(c, response.NewPage(records, total, pq))
 }
 
 // CreateRecord POST /api/pets/:id/records
@@ -42,14 +46,14 @@ func (h *Handler) CreateRecord(c *gin.Context) {
 	}
 	in := service.RecordInput{
 		Type: req.Type, Icon: req.Icon, Title: req.Title, Description: req.Description,
-		NumValue: req.NumValue, Category: req.Category, ImageURL: req.ImageURL, Extra: req.Extra,
+		NumValue: req.NumValue, Category: req.Category, ImageURL: req.ImageURL, ImageFileID: req.ImageFileID, Extra: req.Extra,
 	}
 	if req.OccurredAt != "" {
 		if t, err := time.Parse(time.RFC3339, req.OccurredAt); err == nil {
 			in.OccurredAt = &t
 		}
 	}
-	rec, err := h.svc.CreateRecord(middleware.UserID(c), uintParam(c, "id"), in)
+	rec, err := h.svc.CreateRecord(middleware.UserID(c), idParam(c, "id"), in)
 	if err != nil {
 		respondErr(c, err)
 		return
@@ -59,7 +63,7 @@ func (h *Handler) CreateRecord(c *gin.Context) {
 
 // DeleteRecord DELETE /api/records/:id
 func (h *Handler) DeleteRecord(c *gin.Context) {
-	if err := h.svc.DeleteRecord(middleware.UserID(c), uintParam(c, "id")); err != nil {
+	if err := h.svc.DeleteRecord(middleware.UserID(c), idParam(c, "id")); err != nil {
 		respondErr(c, err)
 		return
 	}
@@ -68,7 +72,7 @@ func (h *Handler) DeleteRecord(c *gin.Context) {
 
 // WeightTrend GET /api/pets/:id/records/weight-trend
 func (h *Handler) WeightTrend(c *gin.Context) {
-	points, err := h.svc.WeightTrend(middleware.UserID(c), uintParam(c, "id"), 7)
+	points, err := h.svc.WeightTrend(middleware.UserID(c), idParam(c, "id"), 7)
 	if err != nil {
 		respondErr(c, err)
 		return