fix: return 501 error for phone verification in production

[Copilot]

📌 PR Title

fix: return 501 error for phone verification in production

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📝 Description

Addresses code review feedback from PR #61. Phone verification was silently succeeding in production without actually sending SMS, creating confusing UX where users receive success messages but never get verification codes.

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✅ Changes Made

🔐 Authentication System

• resend-verification/route.ts: Returns 501 (Not Implemented) for phone verification in production instead of silent success
• register/route.ts: Same fix for registration flow

if (process.env.NODE_ENV === 'development') {
    console.log(`📱 PHONE VERIFICATION TOKEN for ${phone}:`, token);
} else {
    return NextResponse.json(
        { error: "Phone verification is not yet implemented" },
        { status: 501 }
    );
}

---

🔍 How to Test

1. Run npm install to install dependencies
2. Run npm run dev
3. Attempt phone verification in development mode (should log token)
4. In production mode, phone verification should return 501 error

---

⚡ Additional Notes

• SMS implementation will be added in a future phase
• Email verification continues to work normally

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Project	Deployment	Preview	Comments	Updated (UTC)
smart-todo	Ready	Preview	Comment	Nov 27, 2025 8:15pm
smart-todo-wum3	Error			Nov 27, 2025 8:15pm

[Copilot]

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

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• checkpoint.prisma.io
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• fonts.googleapis.com
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