Miner dashboard: ledgers route skeleton/chart/pagination adoption

[JSONbored]

Context

Part of epic #6504's visual/ui-kit track. apps/loopover-miner-ui/src/routes/ledgers.tsx:117-134 hand-duplicates the same 4-branch loading/error/empty/data JSX pattern with plain-text loading ("Loading local ledgers…") and static full-dump event tables (lines 41-57, 178-195) with no sort/filter/pagination.

Requirements

• Adopt Skeleton/chart.tsx for the claims cards' loading state.
• Adopt pagination.tsx for both event tables.
• Adopt the shared async-state primitives from the ui-kit-port child issue of this same epic instead of the hand-rolled 4-branch JSX.
• Leave the underlying ledgers.ts fetcher and the existing governor pause/resume action buttons untouched — restyle-only, per the epic's explicit boundary.

Deliverables

• ledgers.tsx restyled with skeleton/chart/pagination across claims cards and both event tables
• Shared async-state primitives adopted
• Before/after screenshots

Test Coverage Requirements

99%+ Codecov patch coverage on every changed line and branch, plus a regression test for the new/changed behavior (note: apps/** UI code may fall outside the strict Codecov patch gate — check coverage.include — but a before/after screenshot table per this repo's UI-PR convention is still required for any visual change).

Expected Outcome

The ledgers route has content-shaped loading states and paginated event tables instead of static full dumps.

Links & Resources

Epic: #6504. apps/loopover-miner-ui/src/routes/ledgers.tsx:41-57,117-134,178-195.

[linear-code]

JSO-4715