[WestwardWinds]

What does this implement/fix?

A user didn't know the LED & Buzzer module needs the Accessory Power Rail. The rail powers the Onboard RGB LED and every module, but only the Core Components page explained it. This adds the rail to the pages where people set up and test the LED, buzzer and modules:

• LED & Buzzer module: two new Device Builder steps (look for the Accessory Power switch, add the Accessory Power Rail if it's missing) and a "LEDs stay dark?" tip under Test the LEDs.
• Play a Tune: a "Before you start" item for the rail, and the "No sound?" tip now checks the rail first.
• First Steps: a warning to keep the rail in every project.
• Button, Motion, and Temperature & Humidity modules: the same two Device Builder steps. They use the wording the SEN65 page already uses.
• Breakout Module and Temperature probe: a short paragraph each.
• Core Components: says the rail is required for the LED and modules, and that Device Builder hides it from the add list once a project has it.
• FAQ: new question 16 for LEDs, buzzer or modules that don't respond.
• Play a Tune from Home Assistant and Press to check climate: one troubleshooting line each.

Button Controlled LEDs, Motion-Activated Light, Temp-Reactive LEDs and Light Effects aren't changed. Each one lists the module page as a prerequisite, and that page now covers the rail.

Checks: markdown 0 errors, secrets 0, check_links 683 pages with 0 broken links or anchors. mkdocs build is clean apart from local cairo warnings.

Types of changes

• Typo / wording fix
• Content update (correcting outdated info, adding missing steps, clarifications)
• New page or new product section
• Page move / rename (redirect added in mkdocs.yml)
• Image / screenshot update
• Nav / structure change
• Site config or theme change
• CI / workflows / dependencies — Does not publish

Checklist:

• This PR targets the dev branch (not main)
• Changes previewed locally with mkdocs serve
• If pages were moved or renamed, redirects were added to mkdocs.yml
• If new pages were added, nav was updated in mkdocs.yml

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⚙️ Run configuration

• Configuration used: Organization UI
• Review profile: CHILL
• Plan: Advanced
• Run ID: 8942508a-e0b5-482e-9535-816205bdcd32

📥 Commits

Reviewing files that changed from the base of the PR and between 29198ad and 164d56e.

📒 Files selected for processing: 12

• docs/products/ESPHome-Starter-Kit/automations/play-a-tune.md
• docs/products/ESPHome-Starter-Kit/automations/press-to-check-climate.md
• docs/products/ESPHome-Starter-Kit/everyday-use/play-a-tune-from-home-assistant.md
• docs/products/ESPHome-Starter-Kit/faq.md
• docs/products/ESPHome-Starter-Kit/learning-the-basics/core-components.md
• docs/products/ESPHome-Starter-Kit/modules/apollo-breakout-module.md
• docs/products/ESPHome-Starter-Kit/modules/breakout-addons/temperature-probe.md
• docs/products/ESPHome-Starter-Kit/modules/button-module.md
• docs/products/ESPHome-Starter-Kit/modules/motion-module.md
• docs/products/ESPHome-Starter-Kit/modules/rgb-buzzer-module.md
• docs/products/ESPHome-Starter-Kit/modules/temperature-humidity-module.md
• docs/products/ESPHome-Starter-Kit/setup/first-steps.md

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