Refactor web app to use DataStar store and routing

[jongrantwritescode]

Summary

• replace the static HTML shell with a module entry point and shared styles for the rebuilt Canon UI
• add a centralized API service plus a DataStar-backed application store and router to manage universes, queue stats, and jobs
• rebuild the sidebar, main view, and universe modal components to dispatch store actions and render dynamic content

Testing

• npm run build
• npm run lint (fails: ESLint configuration is missing)

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https://chatgpt.com/codex/tasks/task_e_68d1bdae5b308324b7386448e02e222d