Adjust split pane breakpoint handling

[dt2patel]

Summary

• ensure the app root split pane explicitly uses the lg breakpoint
• remove custom split pane styling so Ionic defaults control layout

Testing

• not run (not requested)

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https://chatgpt.com/codex/tasks/task_b_68f07d31b224832188e0e4aa23cc2d20

[gemini-code-assist]

Summary of Changes

Hello @dt2patel, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refines the application's split pane behavior by explicitly setting the "lg" breakpoint and removing custom styling. This change ensures that the split pane layout is consistently managed by Ionic's default mechanisms, leading to a more predictable and maintainable user interface across different screen sizes.

Highlights

• Split Pane Breakpoint: The application's root split pane now explicitly utilizes the "lg" breakpoint, ensuring consistent behavior for its layout.
• Custom Styling Removal: Custom CSS styling for "ion-split-pane" has been removed, allowing Ionic's default layout controls to manage its appearance and responsiveness.

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[gemini-code-assist]

Code Review

This pull request removes a redundant scoped style for ion-split-pane in App.vue. The custom style was setting --side-width to 304px, which is already the default value when using the when="lg" breakpoint on the component. This change is a good cleanup, simplifying the code and relying on Ionic's default behavior, which improves maintainability.