feat(slots): thread rescheduledBy param from URL through to tRPC input

[bcornish1797]

Second of three PRs splitting #28636.

Threads a new rescheduledBy URL param through useScheduleForEvent, useSchedule, and the tRPC getSchedule input. Nothing consumes it yet; Part C (#28911) reads it to decide whether a reschedule is host-initiated. Small additive change, backwards compatible at both the URL and schema levels (nullish).

[github-actions]

Welcome to Cal.diy, @bcornish1797! Thanks for opening this pull request.

A few things to keep in mind:

• This is Cal.diy, not Cal.com. Cal.diy is a community-driven, fully open-source fork of Cal.com licensed under MIT. Your changes here will be part of Cal.diy — they will not be deployed to the Cal.com production app.
• Please review our Contributing Guidelines if you haven't already.
• Make sure your PR title follows the Conventional Commits format.

A maintainer will review your PR soon. Thanks for contributing!

[coderabbitai]

📝 Walkthrough

Walkthrough

This change adds support for a rescheduledBy query-string parameter throughout the schedule management system. The parameter is extracted in the useEvent hook, forwarded to the useSchedule hook, and propagated through the API request input to the backend. The getScheduleSchemaObject Zod schema is updated to validate and include the new optional rescheduledBy field, extending the type definitions used by the schedule retrieval logic.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately summarizes the main change: threading the rescheduledBy parameter from URL through frontend hooks to tRPC input schema.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description check	✅ Passed	The PR description clearly relates to the changeset, explaining the purpose of threading a rescheduledBy parameter through the codebase as part of a three-part feature series.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

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.}

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

---

Bcornish seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[github-actions]

This PR has been marked as stale due to inactivity. If you're still working on it or need any help, please let us know or update the PR to keep it active.

[github-actions]

This PR has been closed due to inactivity. Please feel free to reopen it if you'd like to continue the work.