feat(supervisor): support revoke binding and tighten access

internal/quitcheckin/handler/supervisor_handler.go

@@ -94,3 +94,26 @@ func (h *Handler) GetSupervisorStatus(c *gin.Context) {
 	}
 	c.JSON(http.StatusOK, model.Success(res))
 }
+
+type revokeSupervisorBindingRequest struct {
+	OwnerUID      int `json:"owner_uid"`
+	SupervisorUID int `json:"supervisor_uid"`
+}
+
+// RevokeSupervisorBinding POST /api/v2/supervisor/revoke
+func (h *Handler) RevokeSupervisorBinding(c *gin.Context) {
+	user := middleware.MustCurrentUser(c)
+
+	var req revokeSupervisorBindingRequest
+	if err := c.ShouldBindJSON(&req); err != nil || req.OwnerUID <= 0 || req.SupervisorUID <= 0 {
+		c.JSON(http.StatusBadRequest, model.Error(http.StatusBadRequest, "请求参数错误"))
+		return
+	}
+
+	if err := h.service.RevokeSupervisorBinding(c.Request.Context(), int(user.ID), req.OwnerUID, req.SupervisorUID, time.Now()); err != nil {
+		c.JSON(http.StatusBadRequest, model.Error(http.StatusBadRequest, "解除失败"))
+		return
+	}
+
+	c.JSON(http.StatusOK, model.Success(gin.H{"ok": true}))
+}

internal/quitcheckin/service/supervisor.go

@@ -45,6 +45,7 @@ var (
 	ErrInviteUsed      = errors.New("邀请已被使用")
 	ErrCannotBindSelf  = errors.New("不能绑定自己为监督人")
 	ErrBindingExists   = errors.New("监督关系已存在")
+	ErrBindingNotFound = errors.New("监督关系不存在")
 )
 
 func (s *Service) CreateSupervisorInvite(ctx context.Context, ownerUID int, now time.Time, days int) (SupervisorInviteResult, error) {
@@ -221,6 +222,31 @@ func (s *Service) GetSupervisorStatus(ctx context.Context, ownerUID int) (Superv
 	return SupervisorStatusResult{Items: items}, nil
 }
 
+// RevokeSupervisorBinding 解除监督关系（owner 或 supervisor 任一方均可解除）。
+func (s *Service) RevokeSupervisorBinding(ctx context.Context, actorUID int, ownerUID int, supervisorUID int, now time.Time) error {
+	if ownerUID <= 0 || supervisorUID <= 0 {
+		return ErrBindingNotFound
+	}
+	if actorUID != ownerUID && actorUID != supervisorUID {
+		return ErrBindingNotFound
+	}
+
+	result := s.db.WithContext(ctx).
+		Model(&quitmodel.SupervisorBinding{}).
+		Where("owner_uid = ? AND supervisor_uid = ? AND status = ?", ownerUID, supervisorUID, "active").
+		Updates(map[string]interface{}{
+			"status":     "revoked",
+			"updated_at": now,
+		})
+	if result.Error != nil {
+		return result.Error
+	}
+	if result.RowsAffected == 0 {
+		return ErrBindingNotFound
+	}
+	return nil
+}
+
 func newInviteToken() string {
 	// 80-bit random -> base32 -> ~16 chars, URL safe-ish, upper-case; unify to lower for nicer display.
 	buf := make([]byte, 10)

internal/quitcheckin/service/supervisor_test.go

@@ -102,3 +102,51 @@ func TestSupervisorInviteBindAndOverview(t *testing.T) {
 		t.Fatalf("status=%v, want one supervisor uid=%d", status.Items, supervisorUID)
 	}
 }
+
+func TestSupervisorRevokeBindingBySupervisor(t *testing.T) {
+	t.Parallel()
+
+	db := setupSupervisorTestDB(t)
+	svc := NewService(db)
+	ctx := context.Background()
+
+	ownerUID := 3101
+	supervisorUID := 3102
+	now := time.Date(2026, 4, 16, 10, 0, 0, 0, time.Local)
+
+	if err := db.Create(&usermodel.User{ID: uint(ownerUID), NickName: "owner"}).Error; err != nil {
+		t.Fatalf("seed owner user: %v", err)
+	}
+	if err := db.Create(&usermodel.User{ID: uint(supervisorUID), NickName: "supervisor"}).Error; err != nil {
+		t.Fatalf("seed supervisor user: %v", err)
+	}
+
+	startDate := time.Date(2026, 4, 10, 0, 0, 0, 0, time.Local)
+	if _, err := svc.UpsertProfile(ctx, ownerUID, UpsertProfileRequest{
+		QuitStartDate:      &startDate,
+		PackPriceCent:      intPtr(2500),
+		BaselineCigsPerDay: intPtr(10),
+	}, "owner", "", now); err != nil {
+		t.Fatalf("upsert profile: %v", err)
+	}
+
+	invite, err := svc.CreateSupervisorInvite(ctx, ownerUID, now, 7)
+	if err != nil {
+		t.Fatalf("create invite: %v", err)
+	}
+	if err := svc.BindSupervisorInvite(ctx, supervisorUID, invite.Token, now); err != nil {
+		t.Fatalf("bind: %v", err)
+	}
+
+	if err := svc.RevokeSupervisorBinding(ctx, supervisorUID, ownerUID, supervisorUID, now); err != nil {
+		t.Fatalf("revoke by supervisor: %v", err)
+	}
+
+	overview, err := svc.GetSupervisorOverview(ctx, supervisorUID, now)
+	if err != nil {
+		t.Fatalf("overview: %v", err)
+	}
+	if len(overview.Items) != 0 {
+		t.Fatalf("overview items=%d, want=0 after revoke", len(overview.Items))
+	}
+}

internal/routes/quitcheckin_routes.go

@@ -19,6 +19,7 @@ func registerQuitCheckinRoutes(protected *gin.RouterGroup, handler *quitcheckinh
 
 		v2.POST("/supervisor/invites", handler.CreateSupervisorInvite)
 		v2.POST("/supervisor/bind", handler.BindSupervisorInvite)
+		v2.POST("/supervisor/revoke", handler.RevokeSupervisorBinding)
 		v2.GET("/supervisor/overview", handler.GetSupervisorOverview)
 		v2.GET("/supervisor/status", handler.GetSupervisorStatus)