feat: Refactor template handling and brand management

- Removed schema_json from article templates and related queries.
- Updated brand service to include website field in requests and responses.
- Simplified template wizard view by eliminating unused schema fields and related logic.
- Added tests for ark text format handling.
- Created migrations for dropping schema_json and adding website to brands.

server/internal/tenant/transport/template_handler.go

@@ -54,20 +54,6 @@ func (h *TemplateHandler) Detail(c *gin.Context) {
 	response.Success(c, data)
 }
 
-func (h *TemplateHandler) Schema(c *gin.Context) {
-	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
-	if err != nil {
-		response.Error(c, response.ErrBadRequest(40001, "invalid_id", "template id must be a number"))
-		return
-	}
-	data, err := h.svc.Schema(c.Request.Context(), id)
-	if err != nil {
-		response.Error(c, err)
-		return
-	}
-	response.Success(c, data)
-}
-
 func (h *TemplateHandler) Generate(c *gin.Context) {
 	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
 	if err != nil {