Add details to Husqvarna Automower restricted reason sensor

[Thomas55555]

Proposed change

If the mower is restricted in mowing it can have different reasons, one of them is called external. For example IFTT can prevent the mower from mowing, if the user build an condition for that. With this PR we give the user more information, if available.

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:

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  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 enhances the restricted‐reason sensor to surface detailed external reasons when the mower is externally blocked.

• Imported and integrated ExternalReasons into the restricted‐reason sensor.
• Added a _get_restricted_reason callback to return external_reason when present.
• Updated tests, snapshots, and translation strings to cover all new external reasons.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
tests/components/husqvarna_automower/test_sensor.py	Added test_restricted_reason_sensor for external reason logic.
tests/components/husqvarna_automower/snapshots/test_sensor.ambr	Expanded snapshots to include new ExternalReasons members.
homeassistant/components/husqvarna_automower/strings.json	Added translation strings for all external reasons.
homeassistant/components/husqvarna_automower/sensor.py	Imported ExternalReasons, updated RESTRICTED_REASONS, and added _get_restricted_reason.

Comments suppressed due to low confidence (2)

tests/components/husqvarna_automower/test_sensor.py:139

• [nitpick] The docstring mentions the work area sensor but this test covers the restricted‐reason sensor. Please update it to accurately describe the restricted‐reason test.

    """Test the work area sensor."""

homeassistant/components/husqvarna_automower/sensor.py:190

• [nitpick] This list now includes external reasons as well as restricted ones. Renaming RESTRICTED_REASONS to something like RESTRICTION_OPTIONS or REASON_OPTIONS would more clearly convey its merged purpose.

    RestrictedReasons.NONE,

[Copilot]

[nitpick] Manually listing each ExternalReasons value risks falling out of sync if new reasons are added. Consider generating the list dynamically from the enum (e.g., list(ExternalReasons)).

[Thomas55555]

But if they are not manually listed and the library gets more new reasons, we might just bump the library and forget to update strings.json. So we have no translations for them.

[NoRi2909]

Are those about https://ifttt.com/automower ?

Then it looks like we need one more "T" in "IFTTT"

Also words that can be translated should be lowercase.

[Thomas55555]

Yes