Address PR feedback for OpenCode integration

packages/adapters/opencode-local/src/ui/build-config.ts

@@ -57,6 +57,8 @@ export function buildOpenCodeLocalConfig(v: CreateConfigValues): Record<string,
   if (v.promptTemplate) ac.promptTemplate = v.promptTemplate;
   if (v.model) ac.model = v.model;
   if (v.thinkingEffort) ac.variant = v.thinkingEffort;
+  // OpenCode sessions can run until the CLI exits naturally; keep timeout disabled (0)
+  // and rely on graceSec for termination handling when a timeout is configured elsewhere.
   ac.timeoutSec = 0;
   ac.graceSec = 20;
   const env = parseEnvBindings(v.envBindings);