Worked on enhancing hash-based routing for Single Page Applications embedded via iframe within the nextcloud/external repository. Focused on enabling deep linking and maintaining consistent navigation state, the developer implemented JavaScript logic to support internal links using hash fragments and ensured that navigation state persisted across hash changes. The approach included updating the iframe source dynamically in response to URL hash modifications, allowing seamless navigation within the embedded SPA. This work leveraged front end development skills and JavaScript to address the challenge of preserving navigation context, resulting in improved usability for SPAs integrated into Nextcloud through iframes.