Explore: a filter bar, and Explore the answers on the Statistics page

The explore page has a filter bar to type filters in (client, name or it and below, view, type, result, blocked), starting from the current filters and suggesting values from what is shown, so taking every filter out no longer means going back. The Statistics page opens it with Explore the answers.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/web/static/assets/style.css

@@ -614,3 +614,8 @@ table.recent-queries td.oneline-cell { max-width: 40ch; white-space: nowrap; ove
 .swatch.db { background: var(--accent); }
 .swatch.other { background: var(--muted); opacity: 0.45; }
 .card .disk-bar { margin: 6px 0 4px; height: 8px; }
+
+/* Explore: the filter bar. */
+form.explore-filters { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; }
+form.explore-filters label { color: var(--muted); display: inline-flex; gap: 6px; align-items: center; }
+.explore-filter-panel { padding-top: 10px; padding-bottom: 10px; }