feat: add support of the ai variant key for images

[Fangoling]

related to:

EduIDE/EduIDE#141
EduIDE/EduIDE-deployment#103
EduIDE/EduIDE-Landing-Page#19

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 5642304e-06d7-479f-aa64-714e31812088

📥 Commits

Reviewing files that changed from the base of the PR and between 5c3955c and 6cfe3e3.

📒 Files selected for processing (3)

• charts/theia-cloud/README.md
• charts/theia-cloud/templates/landing-page-config-map.yaml
• charts/theia-cloud/values.yaml

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📝 Walkthrough

Walkthrough

This PR extends Helm chart configuration for landing page additional apps by introducing support for the aiVariant field. The change includes value schema documentation with example, conditional template rendering, and updated user documentation.

Changes

Landing Page Additional Apps aiVariant Support

Layer / File(s)	Summary
aiVariant field configuration and rendering charts/theia-cloud/values.yaml, charts/theia-cloud/templates/landing-page-config-map.yaml, charts/theia-cloud/README.md	Adds aiVariant field to the landingPage.additionalApps configuration with documentation and example in values.yaml, implements conditional aiVariant rendering in the landing page config template using Helm tpl, and updates README to document all forwarded optional fields including aiVariant.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Possibly related PRs

• EduIDE/EduIDE-Helm#16: Both PRs conditionally forward per-app fields under window.theiaCloudConfig.additionalApps in the landing page config template.
• EduIDE/EduIDE-Helm#14: Both PRs extend per-app field forwarding for landingPage.additionalApps in the landing page config rendering.

Suggested reviewers

• lukaskratzel

Poem

🐰 A field for apps to vary their AI heart,
Config, template, docs—all play their part,
From values through rendering, clean and bright,
Additional apps now shine just right! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'feat: add support of the ai variant key for images' directly reflects the main change: adding support for the aiVariant field in the landing page configuration for app definitions.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/ai-base-image

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[KevinGruber2001]

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