feat(admin): reset a user's recommendations from the users panel

- POST /admin/users/{id}/reset-recommendations clears the taste profile
  (onboarding, CF vector, bandit), play stats and wave impressions; likes,
  dislikes and history stay, wave sessions stay so a playing wave keeps going
- moderators may reset plain users, admins anyone including themselves;
  the reset is written to the audit log
- users panel gets the menu action with a confirmation; docs updated

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

services/api/internal/auth/admin_handler.go

@@ -97,6 +97,18 @@ func (h *Handler) ResetUserPassword(ctx context.Context, req gen.ResetUserPasswo
 	return gen.ResetUserPassword200JSONResponse{TemporaryPassword: password}, nil
 }
 
+// ResetUserRecommendations реализует gen.StrictServerInterface.
+func (h *Handler) ResetUserRecommendations(ctx context.Context, req gen.ResetUserRecommendationsRequestObject) (gen.ResetUserRecommendationsResponseObject, error) {
+	p, err := principal(ctx)
+	if err != nil {
+		return nil, err
+	}
+	if err := h.svc.ResetRecommendations(ctx, p, req.Id); err != nil {
+		return nil, err
+	}
+	return gen.ResetUserRecommendations204Response{}, nil
+}
+
 // ListAudit реализует gen.StrictServerInterface.
 func (h *Handler) ListAudit(ctx context.Context, req gen.ListAuditRequestObject) (gen.ListAuditResponseObject, error) {
 	p, err := principal(ctx)