Make model descriptions expandable

Summary:
- render compact catalog descriptions as expandable details
- keep row height compact by default while exposing full text on click
- add template coverage for expandable descriptions

Tests:
- go test -count=1 ./internal/adminapi
- go test -count=1 ./...

Author: dzarlax

internal/adminapi/adminapi_test.go

@@ -209,6 +209,9 @@ func TestModelsBrowserRendersCardAndTableModes(t *testing.T) {
 		if !strings.Contains(html, "Balanced multilingual model") {
 			t.Fatalf("compact view missing model description: %s", html)
 		}
+		if !strings.Contains(html, "<details class=\"catalog-row__description\">") || !strings.Contains(html, "catalog-row__description-full") {
+			t.Fatalf("compact view should render expandable full description: %s", html)
+		}
 		if strings.Contains(html, "catalog-audit-table") {
 			t.Fatalf("compact view should not render audit table")
 		}

internal/adminapi/templates/partials_layout.html

@@ -42,7 +42,12 @@
   .catalog-row__title { display: grid; gap: 0.35rem; }
   .catalog-row__name { margin-top: 0.12rem; color: var(--text-secondary); font-size: 0.78rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
   .catalog-row__chips { display: flex; gap: 0.3rem; flex-wrap: wrap; }
-  .catalog-row__description { margin-top: 0.4rem; color: var(--text-secondary); font-size: 0.8rem; line-height: 1.35; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
+  .catalog-row__description { margin-top: 0.4rem; color: var(--text-secondary); font-size: 0.8rem; line-height: 1.35; }
+  .catalog-row__description summary { cursor: pointer; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; list-style: none; }
+  .catalog-row__description summary::-webkit-details-marker { display: none; }
+  .catalog-row__description summary::after { content: " More"; color: var(--accent); font-weight: 600; white-space: nowrap; }
+  .catalog-row__description[open] summary { display: none; }
+  .catalog-row__description-full { color: var(--text-secondary); }
   .catalog-row__why { font-size: 0.86rem; color: var(--text); }
   .catalog-row__reasons, .catalog-row__warnings { display: flex; gap: 0.35rem; flex-wrap: wrap; margin-top: 0.4rem; font-size: 0.78rem; }
   .catalog-row__reasons { color: var(--text-secondary); }
@@ -112,7 +117,7 @@
     .catalog-view-toggle .btn, .catalog-tabs .btn { flex: 1 1 auto; }
     .catalog-sort, .catalog-sort-dir { flex: 1 1 8rem; width: auto; }
     .catalog-row { grid-template-columns: 1fr; gap: 0.65rem; }
-    .catalog-row__description { -webkit-line-clamp: 3; }
+    .catalog-row__description summary { -webkit-line-clamp: 3; }
     .catalog-grid { grid-template-columns: 1fr; }
     .catalog-card { padding: 0.75rem; }
     .catalog-card__header { flex-direction: column; gap: 0.5rem; }

internal/adminapi/templates/partials_models_row.html

@@ -75,7 +75,12 @@
           {{if .Free}}<span class="badge badge--success" title="Free tier">FREE</span>{{end}}
         </div>
       </div>
-      {{if .Description}}<div class="catalog-row__description" title="{{.Description}}">{{.Description}}</div>{{end}}
+      {{if .Description}}
+      <details class="catalog-row__description">
+        <summary>{{.Description}}</summary>
+        <div class="catalog-row__description-full">{{.Description}}</div>
+      </details>
+      {{end}}
     </div>
 
     <div class="catalog-row__decision">