initial: mirror of @fn_library from fn_registry

75 components + DESIGN_SYSTEM.md + sync script.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

components/dropdown_menu.md

@@ -0,0 +1,74 @@
+---
+name: dropdown_menu
+kind: component
+lang: ts
+domain: ui
+version: "1.0.0"
+purity: impure
+signature: "DropdownMenu(props: DropdownMenuProps): JSX.Element"
+description: "Menu de acciones y contexto accesible con items, checkboxes, radios, separadores y submenus. Base-UI Menu primitive."
+tags: [dropdown, menu, component, ui, interactive, overlay, mantine]
+uses_functions: []
+uses_types: []
+returns: []
+returns_optional: false
+error_type: ""
+imports: ["@mantine/core"]
+output: "Componente DropdownMenu que renderiza menú desplegable accesible con items, checkboxes, radios y submenus"
+tested: false
+tests: []
+test_file_path: ""
+file_path: "frontend/functions/ui/dropdown_menu.tsx"
+props:
+  - name: open
+    type: "boolean"
+    required: false
+    description: "Estado controlado de apertura"
+  - name: defaultOpen
+    type: "boolean"
+    required: false
+    description: "Estado inicial de apertura"
+  - name: onOpenChange
+    type: "(open: boolean) => void"
+    required: false
+    description: "Callback cuando cambia el estado"
+  - name: modal
+    type: "boolean"
+    required: false
+    description: "Comportamiento modal (default: true)"
+emits: [onOpenChange]
+has_state: false
+framework: react
+variant: []
+---
+
+## Ejemplo
+
+```tsx
+<DropdownMenu>
+  <DropdownMenuTrigger asChild>
+    <Button variant="outline">Acciones</Button>
+  </DropdownMenuTrigger>
+  <DropdownMenuContent>
+    <DropdownMenuLabel>Mi cuenta</DropdownMenuLabel>
+    <DropdownMenuSeparator />
+    <DropdownMenuItem onActivate={() => console.log("Perfil")}>
+      Perfil
+    </DropdownMenuItem>
+    <DropdownMenuCheckboxItem checked={showBookmarks} onCheckedChange={setShowBookmarks}>
+      Marcadores
+    </DropdownMenuCheckboxItem>
+    <DropdownMenuSeparator />
+    <DropdownMenuSub>
+      <DropdownMenuSubTrigger>Mas opciones</DropdownMenuSubTrigger>
+      <DropdownMenuSubContent>
+        <DropdownMenuItem>Opcion A</DropdownMenuItem>
+      </DropdownMenuSubContent>
+    </DropdownMenuSub>
+  </DropdownMenuContent>
+</DropdownMenu>
+```
+
+## Notas
+
+Exports: DropdownMenu, DropdownMenuTrigger, DropdownMenuContent, DropdownMenuItem, DropdownMenuCheckboxItem, DropdownMenuRadioGroup, DropdownMenuRadioItem, DropdownMenuGroup, DropdownMenuLabel, DropdownMenuSeparator, DropdownMenuShortcut, DropdownMenuSub, DropdownMenuSubTrigger, DropdownMenuSubContent, DropdownMenuPortal.