Periodic client-side refresh for Shares/Config tabs using Alpine.js
setInterval, with toggle and configurable interval (2-30s) in header.
Dashboard (SSE) and Logs (own polling) are excluded. Shares tab
preserves row expansion state across refreshes via ?expand= param.
Adds [x-cloak] CSS rule and conditional x-cloak on detail rows to
prevent flash during content swaps.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>