Add a global keyboard shortcuts cheat-sheet modal (?) with a help link in footer

[greatest0fallt1me]

Description

This is a UI/UX issue. Discovery of keyboard shortcuts (Cmd-K, ESC to close modal, / to focus search) is currently invisible. Add a "?" shortcut that opens a centered modal listing all global shortcuts in a two-column layout, plus a footer link.

Requirements and Context

• Reference: src/App.tsx
• Modal must be focus-trapped, ESC-closeable, restore focus on close
• Shortcut chord rendered as styled <kbd> elements
• Skip rendering on touch-only devices
• Must be secure, tested, and documented
• Should be efficient and easy to review

Suggested Execution

1. Fork the repo and create a branch

   git checkout -b feature/shortcuts-cheatsheet

2. Implement changes
   • src/components/ShortcutsModal.tsx
   • src/App.tsx — register global ? listener
3. Test and commit
   • Open with ?, close with ESC, verify focus restoration
   • Verify it does not render in iOS Safari touch context

Example commit message

feat: keyboard shortcuts cheat-sheet modal

Acceptance Criteria

• Pressing ? opens the modal
• ESC closes and restores focus
• All shortcuts rendered with <kbd> styling
• Footer link opens the same modal

Guidelines

• <kbd> styling token-driven for both themes
• Avoid keyboard handler conflicts inside input fields
• Clear documentation and inline comments
• Timeframe: 96 hours

[gloskull]

Hi, I’d love to work on this issue. I have 4 years of experience across backend, frontend, full-stack, and smart contract development. I understand the task clearly and can deliver a clean, efficient, well-tested solution on time, with strong focus on code quality and maintainability. My PR will be submitted in under 10 hours.

[Ayomide-codex]

@Ayomide-codex has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I can resolve your issue. Please assign

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Ayomide-codex to this issue.

[drips-wave]

Congratulations, @Ayomide-codex! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @Ayomide-codex: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

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