The Usage page gated cross-user features (default ``scope=all``,
the user filter, the per-user breakdown dimension) on
``currentUser.is_admin`` alone. The backend's
``_can_use_all_scope`` already grants the same surface to Org
owners — the page just never asked. Result: a non-admin Org owner
landed on ``scope=self`` with no user filter and no per-user
group-by, even though the API would have happily served them the
org-wide picture.
Switch the three sites to ``useAccess().canSeeOrgAdmin``, which
already encodes "platform admin OR owner of the selected
(non-Personal) Org". One predicate, no new helper.
Sites:
- ``index.tsx``: ``initialScope`` defaults to ``all`` for managers.
- ``filter-bar.tsx``: the user filter + nested API-key cascader
surface (vs the flat API-key picker for members).
- ``daily-usage.tsx``: the ``user`` group-by option in the chart.
Align with gpustack backend commits 7b57cd3b (add route dimension to
usage breakdown) and 51fd25c8 (use model_route_id as models_called):
* group_by, filters, and BreakdownItem now use the `route` dimension;
`models` filter cascader is replaced with a flat `routes` selector
(routes have no provider/cluster grouping).
* Tab / group_by option / column header keep the user-facing "模型 / Model"
wording — only the underlying data dimension changed.
* Drop cluster_name / provider_type columns from the breakdown table;
drop api_keys_used column per design.
* Fix pre-existing excel export bug in use-export-table — string
dataIndex was lodash-joined char-by-char ("input_tokens" →
"i_n_p_u_t..."), array dataIndex was used as a flat key against nested
rows. Rebuilt around buildSheetMeta that emits a stable field key plus
a formatMap using _.get(row, path) for nested values. Sheet name kept
as `models` to match the visible column label.
