Migrate LiveWell+ frontend from React to Vue

[XinSkyrim]

Summary

• replace the React entry point with a Vue-powered application shell and routing between feature tabs
• reimplement the social, task, health, and status experiences as Vue single-file components with equivalent styling and animations
• remove unused React-only component library in favor of lean Vue components and update build tooling/dependencies for Vite + Vue

Testing

• npm install (fails: registry returned 403 so dependencies could not be downloaded)

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https://chatgpt.com/codex/tasks/task_e_68efc1942b988328a6858ec1ad83ed18