refactor(environment): rename urls payload to data

- replace hardcoded URL keys with a generic key-value data map

- align backend DTOs, MCP schemas, and service import/export mapping

- update environment UI forms to edit JSON data instead of fixed fields

client/src/api/client.ts

@@ -118,13 +118,13 @@ export const environments = {
   get(id: string): Promise<Environment> {
     return request(`/environments/${id}`);
   },
-  create(name: string, urls: Environment['urls']): Promise<Environment> {
+  create(name: string, data: Environment['data']): Promise<Environment> {
     return request('/environments', {
       method: 'POST',
-      body: JSON.stringify({ name, urls }),
+      body: JSON.stringify({ name, data }),
     });
   },
-  update(id: string, patch: Partial<Pick<Environment, 'name' | 'urls'>>): Promise<Environment> {
+  update(id: string, patch: Partial<Pick<Environment, 'name' | 'data'>>): Promise<Environment> {
     return request(`/environments/${id}`, {
       method: 'PATCH',
       body: JSON.stringify(patch),