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/alert.md

@@ -0,0 +1,50 @@
+---
+name: alert
+kind: component
+lang: ts
+domain: ui
+version: "1.0.0"
+purity: impure
+signature: "Alert(props: { variant?: 'default' | 'destructive' }): JSX.Element"
+description: "Alerta accesible con variantes default y destructive. Mantine Alert con slots para título, descripción y acción."
+tags: [alert, feedback, component, ui, notification, mantine]
+uses_functions: []
+uses_types: []
+returns: []
+returns_optional: false
+error_type: ""
+imports: ["@mantine/core", react]
+output: "Componente Alert que renderiza una alerta accesible via Mantine Alert con slots para título, descripción y acción"
+tested: false
+tests: []
+test_file_path: ""
+file_path: "frontend/functions/ui/alert.tsx"
+props:
+  - name: variant
+    type: "'default' | 'destructive'"
+    required: false
+    description: "Variante visual"
+emits: []
+has_state: false
+framework: react
+variant: [default, destructive]
+source_repo: "https://gitea-dgg044oo04woo4ggcsws4gk0.organic-machine.com/Bl4cksmith/Frontend_Library"
+source_license: "MIT"
+source_file: "frontend/src/components/ui/alert.tsx"
+---
+
+## Ejemplo
+
+```tsx
+<Alert variant="destructive">
+  <AlertCircle />
+  <AlertTitle>Error</AlertTitle>
+  <AlertDescription>Something went wrong.</AlertDescription>
+</Alert>
+```
+
+## Notas
+
+Exporta 4 subcomponentes composables via data-slot: Alert, AlertTitle, AlertDescription, AlertAction.
+AlertAction se posiciona absolute top-right para acciones secundarias (ej: boton cerrar).
+alertVariants se exporta como objeto vacio por compatibilidad (Mantine gestiona variantes via color prop).