diff --git a/README.md b/README.md
index 5675188121..34532ef739 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,8 @@ Found a bug or have feedback? [Open an issue](https://github.com/PostHog/code/is
 
 # PostHog Code
 
+<!-- CI test comment: verifying the pipeline picks up changes on this branch -->
+
 This is the monorepo for PostHog Code apps and the agent framework that powers them.
 
 ## Development
diff --git a/packages/host-router/src/ports/connectivity-client.ts b/packages/host-router/src/ports/connectivity-client.ts
index cb6c67e5a3..c5d95d8508 100644
--- a/packages/host-router/src/ports/connectivity-client.ts
+++ b/packages/host-router/src/ports/connectivity-client.ts
@@ -7,3 +7,6 @@ export const CONNECTIVITY_CLIENT = Symbol.for(
 export interface HostConnectivityClient {
   connectivity: WorkspaceClient["connectivity"];
 }
+
+// CI test: deliberate type error to verify the pipeline fails as expected.
+const _ciTestBrokenValue: number = "this is not a number";