Improve unpair schema in homekit

[arturpragacz]

Proposed change

Improve UNPAIR_SERVICE_SCHEMA in homekit.

As this service required just devices, using ENTITY_SERVICE_FIELDS was unnecessarily complex. Additionally a device selector provides a better UI here than target selector.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request:
• Link to developer documentation pull request:
• Link to frontend pull request:

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• I have followed the perfect PR recommendations
• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.

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[home-assistant]

Hey there @bdraco, mind taking a look at this pull request as it has been labeled with an integration (homekit) you are listed as a code owner for? Thanks!

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[Copilot]

Pull Request Overview

This PR improves the HomeKit unpair service schema by simplifying the validation and adding proper field documentation. The changes make the device_id parameter explicitly required and provide user-friendly descriptions for the service and its fields.

Key changes:

• Simplified the unpair service schema validation to directly require device_id as a string
• Added proper field documentation in strings.json for the device_id parameter
• Updated services.yaml to use fields instead of target with proper device selector

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
homeassistant/components/homekit/__init__.py	Simplified UNPAIR_SERVICE_SCHEMA to directly require device_id as string instead of using complex entity service validation
homeassistant/components/homekit/services.yaml	Changed from target-based to fields-based schema with required device_id and device selector
homeassistant/components/homekit/strings.json	Added field documentation for device_id parameter in the unpair service

[bdraco]

tested, works as expected

[frenck]

Tagged this for the current beta, nice little QoL.