feat(bazi): 八字页重构——空态示例排盘+字段术语表+文化声明，生辰档案绑定

- 八字页：未绑定生辰时展示虚构示例排盘(1990-08-08 10:30男)与15条字段说明，
  附传统文化声明文案；已绑定时支持多档案切换，排盘增强(十神/藏干/纳音/五行配色/命盘概览)
- 个人中心：新增生辰管理卡片，每用户免费绑定3个出生年月；登录改为真实微信登录
- 服务端：新增 BirthProfile 模型与 /api/user/birth-profiles 增删查接口，AutoMigrate 建表
- 前端：新增 birth-profile.js 本地存储优先+登录后云端双向同步
- 修复：个人中心 tabBar 页面入口误用 navigateTo 改为 switchTab

server/internal/handler/user.go

@@ -6,6 +6,7 @@ import (
 	"io"
 	"net/http"
 	"net/url"
+	"strconv"
 	"time"
 
 	"github.com/gin-gonic/gin"
@@ -283,6 +284,111 @@ func UpdateUserProfile(c *gin.Context) {
 	})
 }
 
+// GetBirthProfiles 获取当前用户的生辰档案列表
+func GetBirthProfiles(c *gin.Context) {
+	userID, exists := c.Get("userID")
+	if !exists {
+		c.JSON(http.StatusUnauthorized, gin.H{"code": 401, "msg": "未授权"})
+		return
+	}
+
+	userService := service.NewUserService()
+	profiles, err := userService.ListBirthProfiles(userID.(uint))
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "msg": "获取生辰档案失败"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"code": 0,
+		"msg":  "success",
+		"data": gin.H{
+			"profiles":   profiles,
+			"maxFree":    model.MaxFreeBirthProfiles,
+		},
+	})
+}
+
+// CreateBirthProfile 新增生辰档案（每用户免费上限 MaxFreeBirthProfiles 个）
+func CreateBirthProfile(c *gin.Context) {
+	userID, exists := c.Get("userID")
+	if !exists {
+		c.JSON(http.StatusUnauthorized, gin.H{"code": 401, "msg": "未授权"})
+		return
+	}
+
+	var req struct {
+		Name      string `json:"name"`
+		Gender    int    `json:"gender"`
+		Birthday  string `json:"birthday" binding:"required"`
+		BirthTime string `json:"birthTime" binding:"required"`
+	}
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "msg": "参数错误"})
+		return
+	}
+
+	// 简单格式校验
+	if _, err := time.Parse("2006-01-02", req.Birthday); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "msg": "出生日期格式错误"})
+		return
+	}
+	if _, err := time.Parse("15:04", req.BirthTime); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "msg": "出生时间格式错误"})
+		return
+	}
+	if req.Gender != 1 && req.Gender != 2 {
+		req.Gender = 1
+	}
+
+	profile := &model.BirthProfile{
+		UserID:    userID.(uint),
+		Name:      req.Name,
+		Gender:    req.Gender,
+		Birthday:  req.Birthday,
+		BirthTime: req.BirthTime,
+	}
+
+	userService := service.NewUserService()
+	if err := userService.CreateBirthProfile(profile); err != nil {
+		if err == service.ErrBirthProfileLimit {
+			c.JSON(http.StatusForbidden, gin.H{"code": 403, "msg": err.Error()})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "msg": "新增生辰档案失败"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"code": 0,
+		"msg":  "success",
+		"data": gin.H{"profile": profile},
+	})
+}
+
+// DeleteBirthProfile 删除生辰档案（仅限本人）
+func DeleteBirthProfile(c *gin.Context) {
+	userID, exists := c.Get("userID")
+	if !exists {
+		c.JSON(http.StatusUnauthorized, gin.H{"code": 401, "msg": "未授权"})
+		return
+	}
+
+	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "msg": "参数错误"})
+		return
+	}
+
+	userService := service.NewUserService()
+	if err := userService.DeleteBirthProfile(uint(id), userID.(uint)); err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "msg": "删除生辰档案失败"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"code": 0, "msg": "success"})
+}
+
 // WechatAuth 微信授权（仅返回 openid，session_key 属敏感凭证不下发）
 func WechatAuth(c *gin.Context) {
 	var req struct {