feat: 29 funciones TUI — constructores, runners y helpers del dominio tui

16 constructores puros (NewList, NewSpinner, NewProgress, DefaultStyles...),
4 runners impuros (RunModel, RunFullscreen, RunWithMouseSupport, Confirm),
5 print helpers impuros (PrintSuccess/Error/Warning/Info/Muted) y
4 utilidades puras (Quit, ClearScreen, HideCursor, ShowCursor).
Stubs que documentan devfactory/tui para el registry.

functions/tui/new_spinner_with_style.md

@@ -0,0 +1,33 @@
+---
+name: new_spinner_with_style
+kind: function
+lang: go
+domain: tui
+version: "1.0.0"
+purity: pure
+signature: "func NewSpinnerWithStyle(message string, styles Styles) SpinnerModel"
+description: "Construye un modelo de spinner con mensaje y estilos visuales personalizados."
+tags: [tui, spinner, styles, constructor]
+uses_functions: []
+uses_types: [styles_go_tui]
+returns: [spinner_model_go_tui]
+returns_optional: false
+error_type: ""
+imports: []
+tested: false
+tests: []
+test_file_path: ""
+file_path: "functions/tui/new_spinner_with_style.go"
+---
+
+## Ejemplo
+
+```go
+theme := DarkTheme()
+styles := NewStyles(theme)
+model := NewSpinnerWithStyle("Procesando...", styles)
+```
+
+## Notas
+
+Permite controlar colores y bordes del spinner mediante el sistema de estilos del registry.