diff --git a/apps/backend/scripts/spike-orchestrator-e2e.mts b/apps/backend/scripts/spike-orchestrator-e2e.mts
index 92c789834..1a8258d81 100644
--- a/apps/backend/scripts/spike-orchestrator-e2e.mts
+++ b/apps/backend/scripts/spike-orchestrator-e2e.mts
@@ -6,8 +6,8 @@
  * snapshot if STACK_CONFIG_AGENT_BASE_SNAPSHOT_ID is set, else cold-install the
  * agent SDK), clone the repo, agent edits the config, COMMIT + PUSH to the branch.
  *
- * WARNING: this pushes a commit to `main` of the target repo. Point it at a
- * throwaway repo (default: hexclave/stackframe-website-2026).
+ * WARNING: this pushes a commit to the target repo. Point SPIKE_OWNER,
+ * SPIKE_REPO, and SPIKE_BRANCH at a throwaway repo/branch.
  *
  * Run from apps/backend:
  *   pnpm dlx dotenv-cli -e .env.development.local -e .env.development -- \
diff --git a/packages/shared-backend/src/config-updater.ts b/packages/shared-backend/src/config-updater.ts
index 7f471e56d..dbfa2cc85 100644
--- a/packages/shared-backend/src/config-updater.ts
+++ b/packages/shared-backend/src/config-updater.ts
@@ -190,7 +190,9 @@ function configFileExportsConfig(content: string, configFilePath: string): boole
     // packages). For the structural sanity check we only need to know a runtime
     // `config` binding still exists after the agent edited the file. Covers
     // `export const config`, `export let config`, `export { config }`, etc.
-    return /\bexport\s+(?:const|let|var)\s+config\b/.test(content) || /\bexport\s*\{[^}]*\bconfig\b/.test(content);
+    // Excludes type-only exports (`export { type config }`) which have no
+    // runtime binding.
+    return /\bexport\s+(?:const|let|var)\s+config\b/.test(content) || /\bexport\s*\{[^}]*(?<!\btype\s)\bconfig\b/.test(content);
   }
 }