Add Strict CORS Policies

[Abdulazeem-code]

Description

Limit API access to trusted origins only.

Acceptance Criteria

• CORS only allows VITE_API_BASE and specified domains
• Rejects requests from unknown origins

Implementation Steps

1. Install cors package
2. Configure corsOptions based on env variables
3. Apply middleware

Branching Instructions

Please create a branch from main following this naming convention:
feat/strict-cors

[Olagoke22]

@Olagoke22 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would like to work on this issue maintainer

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Olagoke22 to this issue.

[habdullhigh]

@habdullhigh has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

i would like to work on this issue maintanier

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

[drips-wave]

Congratulations, @Olagoke22! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @Olagoke22: 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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