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/number_input.md

@@ -0,0 +1,92 @@
+---
+name: number_input
+kind: component
+lang: ts
+domain: ui
+version: "1.0.0"
+purity: impure
+signature: "FnNumberInput(props: FnNumberInputProps): JSX.Element"
+description: "Input numerico con min/max, step, prefijo y sufijo. Wrapper sobre Mantine NumberInput."
+tags: [mantine, input, number, form, component, ui]
+uses_functions: []
+uses_types: []
+returns: []
+returns_optional: false
+error_type: ""
+imports: ["@mantine/core"]
+framework: react
+props:
+  - name: value
+    type: "number | string"
+    required: false
+    description: "Valor actual del input"
+  - name: onChange
+    type: "(value: number | string) => void"
+    required: false
+    description: "Callback cuando cambia el valor"
+  - name: min
+    type: "number"
+    required: false
+    description: "Valor minimo permitido"
+  - name: max
+    type: "number"
+    required: false
+    description: "Valor maximo permitido"
+  - name: step
+    type: "number"
+    required: false
+    description: "Incremento/decremento por click"
+  - name: label
+    type: "string"
+    required: false
+    description: "Etiqueta del input"
+  - name: description
+    type: "string"
+    required: false
+    description: "Texto descriptivo debajo del input"
+  - name: error
+    type: "string"
+    required: false
+    description: "Mensaje de error"
+  - name: placeholder
+    type: "string"
+    required: false
+    description: "Placeholder del input"
+  - name: prefix
+    type: "string"
+    required: false
+    description: "Texto prefijo dentro del input (ej: $)"
+  - name: suffix
+    type: "string"
+    required: false
+    description: "Texto sufijo dentro del input (ej: kg)"
+output: "Input numerico con controles de incremento, validacion y decoradores de texto"
+tested: false
+tests: []
+test_file_path: ""
+file_path: "frontend/functions/ui/number_input.tsx"
+emits: []
+has_state: false
+variant: []
+---
+
+## Ejemplo
+
+```tsx
+import { FnNumberInput } from '@fn_library'
+
+<FnNumberInput
+  label="Precio"
+  value={price}
+  onChange={setPrice}
+  min={0}
+  max={10000}
+  step={0.01}
+  prefix="$"
+  description="Precio unitario en USD"
+/>
+```
+
+## Notas
+
+Wrapper sobre Mantine `NumberInput`. Soporta prefix/suffix para decorar el valor visualmente. Los controles de incremento/decremento respetan min/max/step.