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/tooltip.md

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+# Tooltip
+
+A popup that reveals information when hovering over an element.
+
+> Based on [Reka UI Tooltip](https://reka-ui.com/docs/components/tooltip)
+
+## Key Props
+
+- `text`: to set the content of the Tooltip.
+- `kbds`: to render [Kbd](/docs/components/kbd) components in the Tooltip.
+- `content`: to control how the Tooltip content is rendered, like its `align` or `side` for example.
+- `arrow`: to display an arrow on the Tooltip.
+- `disabled`: to disable the Tooltip.
+
+## Usage
+
+```vue
+<UTooltip
+  <!-- props here -->
+/>
+```