Add nuxt-skills and update auto quotes to use new policy API structure

- Add nuxt-skills (vue, nuxt, nuxt-ui) to .claude/skills/
- Create useCustomerSelection() composable for managing insured/buyer selection
- Create usePolicyApi() composable for policy API operations
- Update auto quote components to use insured/buyer instead of client
- Update vehicle fields: remove valorVehiculo, add market_value, requested_value, rc_limits
- Make chassis_number and engine_number optional
- Update auto quote types and composables to match new API structure
- Update auto quote page to submit to policy API with new structure

.claude/skills/nuxt-ui/components/slider.md

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+# Slider
+
+An input to select a numeric value within a range.
+
+> Based on [Reka UI Slider](https://reka-ui.com/docs/components/slider)
+
+## Key Props
+
+- `step`: to set the increment value of the Slider.
+- `orientation`: to change the orientation of the Slider.
+- `color`: to change the color of the Slider.
+- `size`: to change the size of the Slider.
+- `tooltip`: to display a [Tooltip](/docs/components/tooltip) around the Slider thumbs with the current value.
+- `disabled`: to disable the Slider.
+- `inverted`: to visually invert the Slider.
+
+## Usage
+
+```vue
+<USlider
+  <!-- props here -->
+/>
+```