fix(email): verification code delivery

[NodeByteLTD]

Summary

Describe what changed and why.

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Chore / maintenance

Testing

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• pnpm lint
• pnpm build
• Relevant tests for changed area

Commands/results:

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Screenshots / Evidence (if applicable)

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Checklist

• I linked related issue(s)
• I updated docs where needed
• I updated changelog for user-facing changes
• I removed secrets from code, logs, and screenshots

Summary by CodeRabbit

• New Features
  • Added backup email verification: Users can now securely add a backup email address. A verification email with a time-limited token (15-minute expiry) is automatically sent to validate ownership.

[coderabbitai]

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Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

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Review profile: CHILL

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Run ID: 19f6bd4d-5f43-48ec-af04-5d9c31084bbd

📥 Commits

Reviewing files that changed from the base of the PR and between f408756 and 22c59a0.

📒 Files selected for processing (2)

• apps/web/src/server/api/routers/user.ts
• apps/web/src/server/mailer.ts

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Walkthrough

This PR activates backup email verification by adding a new sendBackupEmailVerificationEmail helper function to the mailer module and wiring it into the user router's addBackupEmail handler to send verification emails during pending-verification creation.

Changes

Backup Email Verification Flow

Layer / File(s)	Summary
Email verification helper apps/web/src/server/mailer.ts	New sendBackupEmailVerificationEmail(email, token) function constructs and sends a verification email with token and 15-minute expiry messaging, skipping in development mode.
Router integration apps/web/src/server/api/routers/user.ts	Router imports and calls the new helper in addBackupEmail to send verification email to the backup address, replacing a previously commented-out TODO.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

✨ Finishing Touches

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🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch develop

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