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/icon.md

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+# Icon
+
+A component to display any icon from Iconify or another component.
+
+## Key Props
+
+- `name`: to display an icon:
+
+## ::component-code
+
+props:
+name: 'i-lucide-lightbulb'
+class: 'size-5'
+
+---
+
+::
+
+::framework-only
+#nuxt
+:::caution{to="/docs/getting-started/integrations/icons/nuxt#collections"}
+It's highly recommended to install the icons collections you need, read more about this.
+
+## Usage
+
+```vue
+<UIcon
+  <!-- props here -->
+/>
+```