init: 毛孩子计划 小程序 + Go 后端 + 内嵌后台

- pets-fe: 微信原生小程序（首页/计划/记录/报告/社区/引导），
  服务端驱动、无假数据；弹层改用 scroll-view，打开时隐藏自定义 tabBar
- pets-be: Gin + GORM(MySQL, sundynix_ 前缀) + MinIO，统一响应/分页，
  微信 code2session 登录，provider-neutral AI(DeepSeek)，go:embed React 后台
- 修复：分段选择类型不匹配（字符串 vs 数字）导致选不中

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

pets-be/internal/handler/record.go

@@ -0,0 +1,77 @@
+package handler
+
+import (
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"gorm.io/datatypes"
+
+	"github.com/sundynix/pets-be/internal/middleware"
+	"github.com/sundynix/pets-be/internal/service"
+	"github.com/sundynix/pets-be/pkg/response"
+)
+
+type recordReq struct {
+	Type        string         `json:"type"`
+	Icon        string         `json:"icon"`
+	Title       string         `json:"title"`
+	Description string         `json:"description"`
+	NumValue    float64        `json:"num_value"`
+	Category    string         `json:"category"`
+	ImageURL    string         `json:"image_url"`
+	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"))
+	if err != nil {
+		respondErr(c, err)
+		return
+	}
+	response.OK(c, records)
+}
+
+// CreateRecord POST /api/pets/:id/records
+func (h *Handler) CreateRecord(c *gin.Context) {
+	var req recordReq
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.FailParams(c, err.Error())
+		return
+	}
+	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,
+	}
+	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)
+	if err != nil {
+		respondErr(c, err)
+		return
+	}
+	response.OK(c, rec)
+}
+
+// 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 {
+		respondErr(c, err)
+		return
+	}
+	response.OK(c, gin.H{"deleted": true})
+}
+
+// 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)
+	if err != nil {
+		respondErr(c, err)
+		return
+	}
+	response.OK(c, points)
+}