[codex] Restore pagination on bounties list

[xclear-cast]

Summary

Restores pagination on the /bounties issue list after PR #983 started rendering the entire sorted issue array in both card and table views.

Changes

• Slice sortedIssues into paginatedIssues before rendering cards or rows.
• Restore the rows-per-page selector using the existing list/card row constants.
• Reset/clamp the current page when filters, search, sort, view mode, or rows-per-page change.
• Move the shared lightweight TablePagination component from components/miners to components/common and update existing imports.
• Guard bounty card/table/chart repository display against missing repository metadata so /bounties does not crash on sparse rows.

Validation

• npm ci
• npm run build
• npx playwright screenshot --wait-for-timeout=3000 http://127.0.0.1:5174/bounties bounty-page.png

Fixes #1027.

[anderdc]

Duplicate of #1028 which is better scoped/implemented. Closing.