Feature flags env variable gating (#9481)

closes #9032

---------

Co-authored-by: Antoine Moreaux <moreaux.antoine@gmail.com>

packages/twenty-server/src/engine/core-modules/client-config/client-config.entity.ts

@@ -94,4 +94,7 @@ export class ClientConfig {
 
   @Field(() => ApiConfig)
   api: ApiConfig;
+
+  @Field(() => Boolean)
+  canManageFeatureFlags: boolean;
 }

packages/twenty-server/src/engine/core-modules/client-config/client-config.resolver.ts

@@ -59,6 +59,9 @@ export class ClientConfigResolver {
         ),
       },
       analyticsEnabled: this.environmentService.get('ANALYTICS_ENABLED'),
+      canManageFeatureFlags:
+        this.environmentService.get('DEBUG_MODE') ||
+        this.environmentService.get('IS_BILLING_ENABLED'),
     };
 
     return Promise.resolve(clientConfig);