Replace the global "Your Spaces" grid with a space-centric dashboard showing
members, previously open tools, recent activity, active votes, and quick
actions. Fix layout cut-off by positioning dashboard fixed below header+tab
row (top: 92px) with sidebar-push support.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
When the last tab is closed, a dashboard appears showing the user's
spaces (sorted by most recent visit), notifications, and quick actions.
Clicking any item creates a new tab and hides the dashboard. Browser
back/forward handles dashboard state correctly.
Also adds proper cache headers for HTML and Vite-hashed assets.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Jeff Emmett