[lvgl] Add note emphasising display validation

[clydebarrow]

Description

Related issue (if applicable): fixes esphome/esphome#16671

Pull request in esphome with YAML changes (if applicable):

• esphome/esphome#

Checklist

• I am merging into next because this is new documentation that has a matching pull-request in esphome as linked above.
  or

• I am merging into current because this is a fix, change and/or adjustment in the current documentation and is not for a new component or feature.

• Link added in /src/content/docs/components/index.mdx when creating new documents for new components or cookbook.

New Component Images

If you are adding a new component to ESPHome, you can automatically generate a standardized black and white component name image for the documentation.

To generate a component image:

1. Comment on this pull request with the following command, replacing component_name with your component name in lower_case format with underscores (e.g., bme280, sht3x, dallas_temp):

   @esphomebot generate image component_name
   

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3. Extract the SVG file and place it in the /public/images/ folder of this repository.

4. Use the image in your component's index table entry in /src/content/docs/components/index.mdx.

Example: For a component called "DHT22 Temperature Sensor", use:

@esphomebot generate image dht22

Note: All images used in ImgTable components must be placed in /public/images/ as the component resolves them to absolute paths.

[Copilot]

Pull request overview

Adds a prominent warning in the LVGL component docs to encourage users to validate their display/LVGL setup (especially color correctness) using the provided “hello world” example before building more complex UI content.

Changes:

• Inserted a GitHub-flavored [!NOTE] alert in the LVGL “TL;DR” section.
• Emphasized verifying display color output against the example image before proceeding with custom content.

[guillempages]

Maybe I am biased, but I personally prefer the original wording to the suggestion by copilot 🤷‍♂️

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: e2c40383-a45a-46d0-914e-c76a07de0e00

📥 Commits

Reviewing files that changed from the base of the PR and between d61b3fe and b2802b4.

📒 Files selected for processing (1)

• src/content/docs/components/lvgl/index.mdx

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Walkthrough

A single admonition note was added to the LVGL component documentation under the "TL;DR" section, providing guidance for users to verify correct display and LVGL configuration using the provided example before adding custom content, with a reminder to check color accuracy while accounting for layout differences across display sizes.

Changes

LVGL Documentation Verification Guidance

Layer / File(s)	Summary
TL;DR verification guidance note src/content/docs/components/lvgl/index.mdx	A [!NOTE] admonition inserted under the TL;DR section recommends users verify display and LVGL configuration using the example first, and confirms that display colors match the example image while noting layout may vary by display dimensions.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	The PR addresses issue #16671 by adding a validation note, but the issue requests a technical fix for JPEG color corruption on ESP32-P4, not documentation guidance.	The documentation note about display validation does not address the core technical issue of JPEG color corruption. Implement the requested technical fix for the online_image decode path on ESP32-P4.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title '[lvgl] Add note emphasising display validation' accurately describes the main change—adding a documentation note about display validation to the LVGL component index.
Description check	✅ Passed	The description is related to the changeset, referencing issue #16671 and indicating this is a documentation fix merged into the current branch.
Out of Scope Changes check	✅ Passed	All changes are in-scope—the PR adds a documentation note to the LVGL component index as intended.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch clydebarrow-patch-3

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[guillempages]

LGTM

[guillempages]

Maybe I am biased, but I personally prefer the original wording to the suggestion by copilot 🤷‍♂️