redesign command palette

- add collapsible search groups
- reduce modal padding
- reduce command item padding
- use breadcrumbs for pagination
- move page breadcrumbs to the bottom

src/renderer/features/search/components/collapsible-command-group.module.css

@@ -0,0 +1,42 @@
+.root {
+    display: flex;
+    flex-direction: column;
+    gap: var(--theme-spacing-xs);
+
+    &:not(:last-child) {
+        margin-bottom: var(--theme-spacing-xs);
+    }
+}
+
+
+.heading {
+    display: flex;
+    gap: var(--theme-spacing-xs);
+    align-items: center;
+    font-size: var(--theme-font-size-sm);
+    cursor: pointer;
+    user-select: none;
+    opacity: 0.8;
+}
+
+.heading:hover {
+    opacity: 1;
+}
+
+.heading:focus-visible {
+    outline: 2px solid var(--theme-colors-primary);
+    outline-offset: 2px;
+}
+
+.chevron {
+    flex-shrink: 0;
+    width: 1rem;
+    height: 1rem;
+    opacity: 0.9;
+}
+
+.items {
+    display: flex;
+    flex-direction: column;
+    gap: 0;
+}