- Fix EventSource is not defined error in queue dashboard
- Add browser guards for all EventSource usage
- Replace static constants (EventSource.OPEN/CLOSED) with numeric values
- Fix setInterval SSR violation in LLM health indicator
- Replace $effect anti-pattern with onMount in share page
- Add comprehensive SvelteKit SSR best practices documentation
- Add SSR audit and testing verification
All changes follow SvelteKit best practices and are verified against
official documentation. Production build succeeds with no SSR errors.
Closes: FixEventSourceSSR
See: docs/outcomes/FixEventSourceSSR.md
