[FE-29] Add responsive layout for mobile and tablet breakpoints in opsce folder

[yusuftomilola]

Problem

The sidebar and dashboard layout are designed only for desktop screens. On mobile and tablet devices, the layout breaks — the sidebar overflows, tables are unscrollable, and modals are too wide.

Proposed Solution

Create frontend/opsce/components/layout/ResponsiveSidebar.tsx that collapses to a slide-out drawer on screens below the md breakpoint. Update the dashboard layout to use this component.

Acceptance Criteria

• On screens smaller than 768px: sidebar is hidden, a hamburger menu icon shown in topbar
• Tapping the hamburger opens the sidebar as a slide-in drawer with a backdrop overlay
• Tapping the backdrop or a navigation link closes the drawer
• DataTable components are horizontally scrollable on small screens (no overflow clipping)
• Modals are full-screen on mobile (below sm breakpoint)
• Summary cards on the dashboard stack vertically on mobile

[Praizfotos]

@Praizfotos has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

HELLO PLEASE I'D LOVE TO SOLVE THIS ISSUE

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[Anadudev]

@Anadudev has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

I want to work on this

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[portableDD]

@portableDD has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Can i Handle this?

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[Alimzy]

@Alimzy has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

I am a software engineer experienced in frontend and backend projects and i have solved similar issue. Thank you

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[drips-wave]

Congratulations, @portableDD! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

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This issue has been completed by @portableDD as part of the Stellar Wave Program's 5th Wave 🥳

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