# Issue #019: Expected Conditions Mejoradas

**Tipo**: Enhancement
**Prioridad**: Alta
**Estado**: En progreso

## Descripción

Implementar condiciones de espera específicas y predefinidas, similares a Selenium Expected Conditions.

## Funcionalidad deseada

- WaitUntilVisible
- WaitUntilHidden
- WaitUntilClickable
- WaitUntilEnabled
- WaitUntilDisabled
- WaitUntilSelected
- WaitUntilTextMatches
- WaitUntilAttributeContains
- WaitUntilURLContains
- WaitUntilTitleContains
- WaitUntilElementCount

## API propuesta

```go
func (b *Browser) WaitUntilVisible(ctx context.Context, selector string, opts *WaitOptions) error
func (b *Browser) WaitUntilHidden(ctx context.Context, selector string, opts *WaitOptions) error
func (b *Browser) WaitUntilClickable(ctx context.Context, selector string, opts *WaitOptions) error
func (b *Browser) WaitUntilEnabled(ctx context.Context, selector string, opts *WaitOptions) error
func (b *Browser) WaitUntilDisabled(ctx context.Context, selector string, opts *WaitOptions) error
func (b *Browser) WaitUntilTextMatches(ctx context.Context, selector, text string, opts *WaitOptions) error
func (b *Browser) WaitUntilAttributeContains(ctx context.Context, selector, attribute, value string, opts *WaitOptions) error
func (b *Browser) WaitUntilURLContains(ctx context.Context, pattern string, opts *WaitOptions) error
func (b *Browser) WaitUntilTitleContains(ctx context.Context, pattern string, opts *WaitOptions) error
```

## Uso

```go
// Esperar a que elemento sea visible
b.WaitUntilVisible(ctx, "#modal", nil)

// Esperar a que botón sea clickeable
b.WaitUntilClickable(ctx, "#submit-btn", nil)

// Esperar a que texto aparezca
b.WaitUntilTextMatches(ctx, "#status", "Success", nil)

// Esperar cambio de URL
b.WaitUntilURLContains(ctx, "/dashboard", nil)
```

## Referencias

- Selenium Expected Conditions: https://www.selenium.dev/selenium/docs/api/py/webdriver_support/selenium.webdriver.support.expected_conditions.html