Fix .env creating an invalid array of endpoints (#2997)

* Fix .env creating an invalid array of endpoints

* Update changelog

Author: stwiname

packages/cli/CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Fixed
+- Issue initializing .env file endpoints array (#2997)
 
 ## [6.6.2] - 2025-12-16
 ### Fixed

packages/cli/src/controller/init-controller.ts

@@ -319,7 +319,9 @@ export async function prepareEnv(projectPath: string, project: ProjectSpecBase):
   }
 
   //adding env configs
-  const envData = `ENDPOINT=${JSON.stringify(project.endpoint)}\nCHAIN_ID=${chainId}`;
+  const endpointStr = Array.isArray(project.endpoint) ? project.endpoint.join(',') : JSON.stringify(project.endpoint);
+
+  const envData = `ENDPOINT=${endpointStr}\nCHAIN_ID=${chainId}`;
   await fs.promises.writeFile(envPath, envData, 'utf8');
   await fs.promises.writeFile(envDevelopPath, envData, 'utf8');
   await fs.promises.writeFile(envLocalPath, envData, 'utf8');