diff --git a/scripts/scenarios/start-app.ts b/scripts/scenarios/start-app.ts
index 5dee3f26c1..2cecaa8d2c 100644
--- a/scripts/scenarios/start-app.ts
+++ b/scripts/scenarios/start-app.ts
@@ -70,12 +70,14 @@ const prepareHome = Effect.fn("startApp.prepareHome")(function* (home: string) {
     path.join(home, "userdata/settings.json"),
     yield* encodeSettings({
       defaultModelSelection: REPLAY,
+      sourceControlWritingStyle: { followChangeRequestTemplates: true },
+      sourceControlWriterModelSelection: {instanceId: "opencode", model: "openai/gpt-6-luna"},
       providerInstances: Object.fromEntries(
         REAL_PROVIDERS.map((driver) => [
           driver,
           {
             driver,
-            enabled: false,
+            enabled: driver === "opencode",
             ...(driver === "codex" ? { config: { binaryPath: noModel } } : {}),
           },
         ]),