The event drawer, and not re-fetching everything

Events are clickable everywhere now - tables, lists, timelines - and they all open the same detail drawer, with its meta, the session timeline and the raw data in scrollable sections.

Making them clickable is easy, the problem is what happens after. Expanding a row unmounted and mounted the content again, so every open was a new request for data I already had. ExpandableListItem now hides with CSS instead of unmounting, and the event store keeps the session events in a useMapStore cache. Same clicks, a lot fewer calls.

ResponsiveView replaced the media queries that were switching between table and list. Doing that in CSS meant both were in the DOM at all times, which is exactly what I was trying to avoid above.

The rest is components: shared UserDetailsList and EventUserName, expanded rows for users and summaries in two columns, and deep signals so the drawer updates while it's open.