refactor: migrate SCIM sync to actor + add tests (#1680)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>

backend/internal/controller/oidc_controller.go

@@ -51,8 +51,6 @@ func NewOidcController(group *gin.RouterGroup, authMiddleware *middleware.AuthMi
 
 	group.GET("/oidc/users/me/clients", authMiddleware.WithAdminNotRequired().Add(), httpserver.Handle(oc.listOwnAccessibleClientsHandler))
 
-	group.GET("/oidc/clients/:id/scim-service-provider", authMiddleware.Add(), httpserver.Handle(oc.getClientScimServiceProviderHandler))
-
 }
 
 type OidcController struct {
@@ -607,29 +605,3 @@ func (oc *OidcController) getClientPreviewHandler(c *gin.Context) error {
 	c.JSON(http.StatusOK, preview)
 	return nil
 }
-
-// getClientScimServiceProviderHandler godoc
-// @Summary Get SCIM service provider
-// @Description Get the SCIM service provider configuration for an OIDC client
-// @Tags OIDC
-// @Produce json
-// @Param id path string true "Client ID"
-// @Success 200 {object} dto.ScimServiceProviderDTO "SCIM service provider configuration"
-// @Failure default {object} dto.ErrorDto "Error"
-// @Router /api/oidc/clients/{id}/scim-service-provider [get]
-func (oc *OidcController) getClientScimServiceProviderHandler(c *gin.Context) error {
-	clientID := c.Param("id")
-
-	provider, err := oc.oidcService.GetClientScimServiceProvider(c.Request.Context(), clientID)
-	if err != nil {
-		return err
-	}
-
-	var providerDto dto.ScimServiceProviderDTO
-	if err := dto.MapStruct(provider, &providerDto); err != nil {
-		return err
-	}
-
-	c.JSON(http.StatusOK, providerDto)
-	return nil
-}