feat(ECR-011): 昵称、首页贴士与档案 Self 唯一/合盘交叉校验

每账号仅一条 self（migration 40902）；合盘只选 TA；账号昵称可改；首页穿衣/颜色/养生贴士。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/internal/handler/auth.go

@@ -23,6 +23,7 @@ func (h *AuthHandler) Register(api *gin.RouterGroup) {
 	g.POST("/login", h.Login)
 	g.POST("/logout", h.Logout)
 	g.GET("/me", h.Me)
+	g.PATCH("/me", h.PatchMe)
 }
 
 type authBody struct {
@@ -97,6 +98,30 @@ func (h *AuthHandler) Me(c *gin.Context) {
 	response.OK(c, me)
 }
 
+type patchMeBody struct {
+	Nickname string `json:"nickname"`
+}
+
+// PatchMe handles PATCH /auth/me (update nickname).
+func (h *AuthHandler) PatchMe(c *gin.Context) {
+	userID, ok := middleware.UserIDFromContext(c)
+	if !ok {
+		response.Fail(c, http.StatusUnauthorized, 40100, "unauthorized")
+		return
+	}
+	var body patchMeBody
+	if err := c.ShouldBindJSON(&body); err != nil {
+		response.Fail(c, http.StatusBadRequest, 10000, "invalid request")
+		return
+	}
+	me, err := h.Svc.UpdateNickname(c.Request.Context(), userID, body.Nickname)
+	if err != nil {
+		response.Fail(c, http.StatusBadRequest, 40113, err.Error())
+		return
+	}
+	response.OK(c, me)
+}
+
 func bearerToken(c *gin.Context) string {
 	h := c.GetHeader("Authorization")
 	if strings.HasPrefix(strings.ToLower(h), "bearer ") {

apps/api/internal/handler/home.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/gin-gonic/gin"
 
+	"github.com/yuxingu/digital-psychology/apps/api/internal/middleware"
 	"github.com/yuxingu/digital-psychology/apps/api/internal/repository"
 	"github.com/yuxingu/digital-psychology/apps/api/internal/service/home"
 	"github.com/yuxingu/digital-psychology/apps/api/pkg/response"
@@ -19,6 +20,7 @@ type HomeHandler struct {
 func (h *HomeHandler) Register(api *gin.RouterGroup) {
 	g := api.Group("/home")
 	g.GET("/tools", h.Tools)
+	g.GET("/daily-tips", h.DailyTips)
 }
 
 func (h *HomeHandler) Tools(c *gin.Context) {
@@ -32,3 +34,13 @@ func (h *HomeHandler) Tools(c *gin.Context) {
 	}
 	response.OK(c, gin.H{"items": items})
 }
+
+func (h *HomeHandler) DailyTips(c *gin.Context) {
+	uid, _ := middleware.UserIDFromContext(c)
+	tips, err := h.Svc.DailyTips(c.Request.Context(), uid)
+	if err != nil {
+		response.Fail(c, http.StatusInternalServerError, 50031, "daily tips failed")
+		return
+	}
+	response.OK(c, tips)
+}

apps/api/internal/handler/profile.go

@@ -1,6 +1,7 @@
 package handler
 
 import (
+	"errors"
 	"net/http"
 	"time"
 
@@ -56,6 +57,10 @@ func (h *ProfileHandler) Create(c *gin.Context) {
 		RelationType: req.RelationType, BirthTime: req.BirthTime, BirthPlace: req.BirthPlace,
 	})
 	if err != nil {
+		if errors.Is(err, profile.ErrSelfExists) {
+			response.Fail(c, http.StatusConflict, 40902, err.Error())
+			return
+		}
 		response.Fail(c, http.StatusBadRequest, 30001, err.Error())
 		return
 	}