- Event type: trim the dropdown to the four types that are actually emitted
(Created / Started / Stopped / Deleted) — updated/attached/detached were
never recorded — and actually send the selection (event_types) to the API,
which previously dropped it so the filter did nothing.
- Add a resource-name text filter (debounced, case-insensitive substring).
- Remove the "filter by user" select: the events list has no User column.
Scope still applies (members see only their own events).
Add the Usage page with Summary / Tokens / GPU Instances / Storage / Resource
Events tabs over the new metering endpoints: per-resource breakdowns with
date / scope / user / resource filters, trend charts, server-side sortable
tables (GPU-Hours, Instance-Hours, GB-Days, GB-Hours), Excel export with an
in-dialog preview, and KPI cards with help tooltips explaining each metric.
MaaS-only users (no Kubernetes cluster and no resource events) get a
tokens-only view with the tab bar dropped; GPU Service / the full page unlock
for admins, cluster owners, or anyone who has run a resource. Instance-type
rows reuse the GPU Instances list styling, and deleted users / instances /
volumes are flagged in breakdowns and filters.
