Initial commit: AI chat assistant with workflow chat, workspace, and profile tabs

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

composables/useDrawer.uts

@@ -0,0 +1,29 @@
+/**
+ * useDrawer — Drawer open/close state management
+ *
+ * Controls the left-slide drawer that contains history and workspace views.
+ * Simple boolean toggle — no persistence needed.
+ */
+
+export function useDrawer() {
+  const isDrawerOpen = ref(false)
+
+  function openDrawer(): void {
+    isDrawerOpen.value = true
+  }
+
+  function closeDrawer(): void {
+    isDrawerOpen.value = false
+  }
+
+  function toggleDrawer(): void {
+    isDrawerOpen.value = !isDrawerOpen.value
+  }
+
+  return {
+    isDrawerOpen,
+    openDrawer,
+    closeDrawer,
+    toggleDrawer,
+  }
+}