feat: [Booking Flow Refactor - 4] Add BookingValidationService

[hariombalhara]

What does this PR do?

• Fixes #XXXX (GitHub issue number)
• Fixes CAL-XXXX (Linear issue number - should be visible at the bottom of the GitHub issue description)

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Mandatory Tasks (DO NOT REMOVE)

• I have self-reviewed the code (A decent size PR without self-review might be rejected).
• I have updated the developer docs in /docs if this PR makes changes that would require a documentation change. If N/A, write N/A here and check the checkbox.
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• Are there environment variables that should be set?
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Checklist

• I haven't read the contributing guide
• My code doesn't follow the style guidelines of this project
• I haven't commented my code, particularly in hard-to-understand areas
• I haven't checked if my changes generate no new warnings

[linear]

PRI-305

[github-actions]

Hey there and thank you for opening this pull request! 👋🏼

We require pull request titles to follow the Conventional Commits specification and it looks like your proposed title needs to be adjusted.

Details:

No release type found in pull request title "Add BookingValidationService". Add a prefix to indicate what kind of release this pull request corresponds to. For reference, see https://www.conventionalcommits.org/

Available types:
 - feat: A new feature
 - fix: A bug fix
 - docs: Documentation only changes
 - style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
 - refactor: A code change that neither fixes a bug nor adds a feature
 - perf: A code change that improves performance
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 - ci: Changes to our CI configuration files and scripts (example scopes: Travis, Circle, BrowserStack, SauceLabs)
 - chore: Other changes that don't modify src or test files
 - revert: Reverts a previous commit

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✨ Finishing touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch hariom/pri-305-bookingcreateservice-phases-1-quick-enrichment-and-validation

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[hariombalhara]

• feat: [Booking Flow Refactor - 4] Add BookingValidationService #23797 👈 (View in Graphite)
• feat: [Booking flow refactor - 3] Rename booking handlers to service names and remove Prisma import from InstantBookingCreateService #23682 : 3 other dependent PRs (#23839 , #24022 , #24025 )
• chore: [Booking flow refactor - 2] Integrate Booking services #23156 : 2 other dependent PRs (#23283 , #23296 )
• chore: [Booking Refactor - Preparation - 0]Move modules required by RegularBookingService to moduleLoader format #23740
• main

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2 Skipped Deployments

Project	Deployment	Preview	Comments	Updated (UTC)
cal	Ignored			Sep 23, 2025 9:20am
cal-eu	Ignored			Sep 23, 2025 9:20am