Add microampere (µA) to CURRENT sensor class

[Phunkafizer]

Proposed change

Type of change

• Document existing features within Home Assistant
• Document new or changing features for which there is an existing pull request elsewhere
• Spelling or grammatical corrections, or rewording for improved clarity
• Changes to the backend of this documentation
• Remove stale or deprecated documentation

Checklist

• I have read and followed the documentation guidelines.
• I have verified that my changes render correctly in the documentation.

Additional information

• Link to relevant existing code or pull request:
  Add unit 'µA' for the units of electric current core#166786

Summary by CodeRabbit

• Documentation
  • Updated current sensor documentation to include support for additional measurement units. The current sensor device class now includes microamps (µA) as a recognized unit, complementing the previously supported amperes (A) and milliamperes (mA) options. This change provides enhanced flexibility for precise current measurements across various device configurations and use cases in different applications.

[coderabbitai]

📝 Walkthrough

Walkthrough

Documentation update to the SensorDeviceClass.CURRENT table, extending the supported units list from A, mA to A, mA, µA to include microamperes as a valid unit option.

Changes

Cohort / File(s)	Summary
Documentation Update docs/core/entity/sensor.md	Extended supported units for SensorDeviceClass.CURRENT to include microamperes (µA) alongside amperes (A) and milliamperes (mA).

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately and clearly summarizes the main change: adding microampere (µA) support to the CURRENT sensor class documentation.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description check	✅ Passed	The pull request description follows the required template structure with all key sections present, including proposed change context, type of change selection, completed checklist items, and a link to the related Home Assistant core pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@docs/core/entity/sensor.md`:
- Line 45: Revert the unsupported microampere unit addition for the CURRENT
device class: update the SensorDeviceClass.CURRENT documentation entry to list
only "A, mA" (remove "µA") so it matches Home Assistant's supported units and
validation; locate the CURRENT entry in docs/core/entity/sensor.md (the table
row for SensorDeviceClass.CURRENT) and remove the "µA" token from the units
column.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: f661ac28-efbb-427e-992b-cddb3f849a1a

📥 Commits

Reviewing files that changed from the base of the PR and between 0f4bc0e and 4d8208e.

📒 Files selected for processing (1)

• docs/core/entity/sensor.md

[MartinHjelmare]

See #3020 (review)

[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.

[Phunkafizer]

New PR containing both changes:

#3025