admin.go: adminProviderView gains ModelMeta (map[string]adminModelMetaView,
keyed by upstream model id) and adminAliasView gains its own ModelMeta —
both built via g.registry.resolveMetaFor/resolveMetaForAliasName
(feature v0.23). adminModelMetaView uses pointer fields
(*int/*float64), not plain zero values: a nil pointer means unknown, a
non-nil pointer (even one pointing at 0) means known, so a free model's
real zero cost never gets confused with an absent one over JSON.
resolveMetaForAliasName resolves an alias's metadata for this
unrestricted admin view via an internal &group{} (GroupConfig's own
documented empty-means-all semantics) — buildAdminOverview already
shows every provider/alias unconditionally, with no group filtering
anywhere else in its response either.
webui/src/types/api.ts: AdminModelMetaView mirrors the Go shape
(optional numbers, undefined means unknown); AdminProviderView.modelMeta
and AdminAliasView.modelMeta wire it through.
webui/src/lib/format.ts: formatContextWindow (binary-K "256k"-style),
formatModelCostHover ("in $X / out $Y per MTok", or "free"), and
their shared formatUsdPerMTok building block.
ModelChip.vue (operator scope refinement): every chip — the accordion's
model chips, the alias table's chips, a group's usage-detail chips —
gains optional contextTokens/inputPerMTokUsd/outputPerMTokUsd props.
When known, they append a resolved-metadata phrase to the existing
copy-state hover text, bound to BOTH title and aria-label (the same
mouse-vs-keyboard/screen-reader parity ProviderRateBadge.vue already
applies); when nothing is known, the hover is unchanged from before this
feature. An alias's chip carries its INHERITED metadata, matching the
alias-inheritance rule the backend already applies.
ProvidersView.vue: the accordion's model list gains a visible, muted
context-only chip ("256k") beside each ModelChip — cost stays
hover-only on the chip itself, per the operator's own "chips +
hover would be redundant on price" resolution.
