First commit

frontend/app/composables/useSearch.ts

@@ -0,0 +1,20 @@
+/* Shared open state for the article search popup (SearchModal.vue).
+   The sidebar search bar and the keyboard shortcuts flip this flag;
+   the modal itself owns the live searching. */
+export function useSearch() {
+  const open = useState<boolean>('search:open', () => false)
+
+  function show() {
+    open.value = true
+  }
+
+  function hide() {
+    open.value = false
+  }
+
+  function toggle() {
+    open.value = !open.value
+  }
+
+  return { open, show, hide, toggle }
+}