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/scroll-area.md

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+# ScrollArea
+
+Creates scrollable containers with optional virtualization for large lists.
+
+> Based on [Reka UI ScrollArea](https://reka-ui.com/docs/components/scroll-area)
+
+## Key Props
+
+- `orientation`: to control scroll direction (`'vertical'` or `'horizontal'`).
+- `items`: array of data to render within the scrollable area.
+- `virtualize`: enables performance optimization for large datasets (renders only visible items). Supports `estimateSize`, `lanes`, `gap`.
+- `as`: specifies the underlying HTML element or component (defaults to `'div'`).
+- `ui`: customization object for styling root, viewport, and items.
+
+## Usage
+
+```vue
+<UScrollArea
+  <!-- props here -->
+/>
+```