feat: implement smoketest and extend host provisioning with template linking

- Add runSmoketest mutation to automate end-to-end verification.

- Add SmoketestExecutor and HostDeleter to support automated testing and cleanup.

- Extend createHost and importHosts to allow linking templates by name or ID.

- Update docs/howtos/cookbook.md with new recipe steps and AI/MCP guidance.

- Update .junie/guidelines.md with new verification and deployment standards.

- Add src/test/template_link.test.ts and update existing tests to cover new functionality.

- Regenerate GraphQL types to match schema updates.

src/datasources/zabbix-hosts.ts

@@ -228,3 +228,9 @@ export class ZabbixCreateHostRequest extends ZabbixRequest<CreateHostResponse> {
         return args?.zabbix_params || {};
     }
 }
+
+export class ZabbixDeleteHostsRequest extends ZabbixRequest<{ hostids: string[] }> {
+    constructor(authToken?: string | null, cookie?: string | null) {
+        super("host.delete", authToken, cookie);
+    }
+}