Add GUI pagination for records view

[songmeo]

Problem

The records API already supports forward pagination via seqno_min, but the GUI does not expose a way for users to move past the first page of results.

Current behavior

• /cf3d/api/v1/records defaults to limit=1000
• The response includes enough information to resume paging forward
• The GUI shows the first page only

Proposed change

Implement GUI pagination for the records view.

Suggested approach:

• Add a Next page action in the records UI
• Resume with seqno_min = last returned record seqno + 1 for lossless paging
• Preserve current device and boot filters while paging
• Make it clear when the result set is truncated by the page limit
• Previous-page support can come later if needed

Notes

The backend support already exists, so this is primarily a GUI client flow issue.