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/chip.md

@@ -0,0 +1,20 @@
+# Chip
+
+An indicator of a numeric value or a state.
+
+## Key Props
+
+- `color`: to change the color of the Chip.
+- `size`: to change the size of the Chip.
+- `text`: to set the text of the Chip.
+- `position`: to change the position of the Chip.
+- `inset`: to display the Chip inside the component.
+- `standalone`: alongside the `inset` prop to display the Chip inline.
+
+## Usage
+
+```vue
+<UChip
+  <!-- props here -->
+/>
+```