Fix loot pagination counts with filters

[ianfhunter]

Motivation

• Pagination copy in the Loot tab could report misleading totals when name/type/purchasable filters were active and did not handle the zero-results filtered state clearly.

Description

• Add unfilteredResultCount and compute it when results are first built to preserve the original result total in assets/js/loot.js.
• Introduce activeDisplayFilters() and resultCountLabel() helpers to produce filter-aware result labels (e.g. "X filtered items (from Y items)").
• Update the pagination rendering to always show accurate filtered counts and to display an explicit zero-results message when filters remove all rows.

Testing

• Static syntax check with node --check assets/js/loot.js completed successfully.
• Repository diff/whitespace checks ran with no reported issues.

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Codex Task

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2026-07-27 13:43 UTC