fix: re-throw error when state update fails after dispatch (#23) (#25)

When a worker session is successfully dispatched but activateWorker
fails to update projects.json, the error was being logged but not
re-thrown. This caused task_pickup to return success even though
the state wasn't updated, leading to task_complete failures later.

Now we re-throw the error after logging the warning, so the caller
knows the state update failed even though the session is running.

Fixes: #23

lib/dispatch.ts

@@ -226,6 +226,10 @@ export async function dispatchTask(
         error: (err as Error).message,
         sessionKey,
       });
+      // Re-throw so caller knows state update failed
+      throw new Error(
+        `State update failed after successful session dispatch: ${(err as Error).message}. Session is running but projects.json was not updated.`,
+      );
     } else {
       // Dispatch failed — rollback label
       try {