[Frontend] Add Husky + lint-staged pre-commit checks

[floxxih]

Automate frontend quality checks before commit to reduce CI churn.

Acceptance Criteria:

• Staged files run lint/format checks
• Hook setup is documented
• Failure output is clear

[zhero-o]

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

Hi, I would like to work on this issue. Can I get assigned?

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

[johnsmccain]

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

i would like to work with you

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

[drips-wave]

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

🧑‍💻 @johnsmccain: 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.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

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🌊 Happy Wave 🌊

[drips-wave]

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

😎 @johnsmccain: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

🧑‍💻 Repo maintainers: How'd the contributor do? Leave a review to share your experience working with them.