Pooldose: Add select platform

[lmaertin]

Breaking change

Proposed change

This PR adds a select platform to the pooldose integration with 8 select entities for configuring pool device settings.

• Added select platform with entities for:
  • Water meter unit (m³, L)
  • Flow rate unit (m³/h, L/s)
  • pH/ORP/Chlorine dosing type (acid/base, dosing set selection)
  • pH/ORP/Chlorine dosing method (proportional, timed, on_off)
• Implemented unit conversion between HA units (m³) and API values (m3) using `REVERSE_UNIT_MAPPING`
• Added comprehensive test suite with 9 tests covering all functionality
• Added translations and icons for all select entities
• Some config entities are hidden by default (entity_registry_enabled_default=False)

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: Pooldose: add selects home-assistant.io#42609
• Link to developer documentation pull request:
• Link to frontend pull request:

Checklist

• I understand the code I am submitting and can explain how it works.
• 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.
• Any generated code has been carefully reviewed for correctness and compliance with project standards.

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.

To help with the load of incoming pull requests:

• I have reviewed two other open pull requests in this repository.

[Copilot]

Pull request overview

This PR adds a select platform to the pooldose integration, introducing 8 select entities for configuring pool device settings such as water meter units, flow rate units, and dosing types/methods for pH, ORP, and chlorine systems. The implementation includes unit conversion between Home Assistant's display units (e.g., m³) and the API's internal values (e.g., m3), comprehensive test coverage with 9 test cases, and proper translations with icons.

Key Changes

• Added select platform with 8 configurable entities for pool device settings
• Implemented unit conversion logic using a new REVERSE_UNIT_MAPPING dictionary for translating HA units to API values
• Refactored sensor platform naming from use_dynamic_unit to use_unit_conversion for consistency

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
homeassistant/components/pooldose/select.py	New select platform implementation with 8 entity descriptions and unit conversion support
homeassistant/components/pooldose/const.py	Added REVERSE_UNIT_MAPPING for HA-to-API unit conversion and updated comment clarity
homeassistant/components/pooldose/sensor.py	Renamed use_dynamic_unit to use_unit_conversion for consistent terminology
homeassistant/components/pooldose/__init__.py	Registered SELECT platform in PLATFORMS list
homeassistant/components/pooldose/strings.json	Added translations for all 8 select entities with state mappings
homeassistant/components/pooldose/icons.json	Added icon mappings for all select entities
tests/components/pooldose/test_select.py	Comprehensive test suite with 9 tests covering entity creation, state changes, unavailability, and unit conversion
tests/components/pooldose/snapshots/test_select.ambr	Snapshot data for select entity validation
tests/components/pooldose/fixtures/instantvalues.json	Added fixture data for all 8 select entities
tests/components/pooldose/conftest.py	Added set_select mock method to support testing

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

Learn more about our pull request process.