Add searchable table index rail behaviors

src/RolemasterDb.App/wwwroot/app.css

@@ -1171,6 +1171,57 @@ pre,
     gap: 0.35rem;
 }
 
+.tables-index-controls {
+    display: grid;
+    gap: 0.75rem;
+}
+
+.tables-index-search-label {
+    position: absolute;
+    width: 1px;
+    height: 1px;
+    padding: 0;
+    margin: -1px;
+    overflow: hidden;
+    clip: rect(0, 0, 0, 0);
+    white-space: nowrap;
+    border: 0;
+}
+
+.tables-index-search {
+    width: 100%;
+}
+
+.tables-family-filters {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.35rem;
+}
+
+.tables-family-filter {
+    border: 1px solid rgba(127, 96, 55, 0.2);
+    border-radius: 999px;
+    background: rgba(255, 250, 242, 0.86);
+    color: var(--ink-soft);
+    font-size: 0.8rem;
+    padding: 0.28rem 0.6rem;
+    transition: border-color 0.16s ease, background-color 0.16s ease, color 0.16s ease;
+}
+
+.tables-family-filter:hover,
+.tables-family-filter:focus-visible {
+    border-color: rgba(184, 121, 59, 0.3);
+    background: rgba(255, 244, 228, 0.94);
+    color: var(--ink);
+    outline: none;
+}
+
+.tables-family-filter.is-selected {
+    background: rgba(188, 117, 43, 0.16);
+    border-color: rgba(188, 117, 43, 0.3);
+    color: var(--ink-strong);
+}
+
 .tables-index-title {
     margin: 0;
     color: var(--ink-strong);
@@ -1183,6 +1234,35 @@ pre,
     gap: 0.35rem;
 }
 
+.tables-index-section {
+    display: grid;
+    gap: 0.5rem;
+}
+
+.tables-index-section-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 0.75rem;
+}
+
+.tables-index-section-header h3 {
+    margin: 0;
+    font-size: 0.95rem;
+    color: var(--ink-strong);
+}
+
+.tables-index-section-count {
+    color: var(--ink-soft);
+    font-size: 0.78rem;
+}
+
+.tables-index-empty {
+    margin: 0;
+    color: var(--ink-soft);
+    font-size: 0.9rem;
+}
+
 .table-index-option {
     display: flex;
     align-items: flex-start;
@@ -1210,6 +1290,10 @@ pre,
     background: rgba(248, 238, 221, 0.98);
 }
 
+.table-index-option.is-active {
+    box-shadow: inset 0 0 0 1px rgba(15, 148, 136, 0.3);
+}
+
 .table-index-option.is-curated {
     background: rgba(102, 138, 83, 0.12);
 }