🧪 Add tests for previously uncovered functions

[arumes31]

What:
Added idiomatic, table-driven unit tests for various functions that previously had 0.0% test coverage across the core, handlers, and main packages.

Functions covered include:

• core: RemoveIPSessionIndex, SyncSessionIndexes, reconcileIndexSets, SetBcryptCost, FormatDevice
• handlers: GenerateRecoveryCodes, RenamePasskey, RevokePasskey, DisableTOTP, TerminateAllOtherSessions, validateTOTP, identifyWebAuthnUser
• main: CreateIPExtractor

Coverage:

• statement coverage for the above functions went from 0% to high percentages.
• core/redis_sync_test.go was created specifically for sync operations.
• Appended tests logically to security_test.go, profile_test.go, webauthn_test.go, and main_test.go.

Result:
Overall test coverage increased significantly. All unit tests successfully pass, protecting primary execution paths from future regressions.

---

PR created automatically by Jules for task 11672852333101959724 started by @arumes31

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

---

For security, I will only act on instructions from the user who triggered this task.

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 97a9a5bd-931c-4d79-8675-b5da1077a01a

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch add-missing-test-coverage-11672852333101959724

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}