feat: forward landing page app image overrides

[CodeByNikolas]

Summary

• forward optional image / Image values from landingPage.additionalApps into the rendered landing-page config.js
• keep the rendered output unchanged when no override is provided
• document the optional value in chart defaults and README

Testing

• helm template test charts/theia-cloud --namespace test-ns --set landingPage.additionalApps.java-17-no-ls.label="Java 17 No-LS" --set landingPage.additionalApps.java-17-no-ls.image="Java-17-latest" --set landingPage.additionalApps.rust-no-ls.label="Rust No-LS"

Summary by CodeRabbit

• New Features

  • Landing page additional apps can now optionally specify custom images to override default logos.

• Documentation

  • Updated configuration documentation and examples to reflect support for optional custom images on additional apps.

[coderabbitai]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: decd99e5-f6b5-4188-ba2d-05c848a03ca2

📥 Commits

Reviewing files that changed from the base of the PR and between ae8659a and cec5ea1.

📒 Files selected for processing (1)

• charts/theia-cloud/Chart.yaml

📝 Walkthrough

Walkthrough

This PR extends the landing page configuration to support optional per-app image overrides. The additionalApps entries now accept an optional image field alongside the existing label, which is forwarded to the rendered landing page config. Documentation and templates were updated to reflect this enhancement.

Changes

Cohort / File(s)	Summary
Documentation Updates charts/theia-cloud/README.md, charts/theia-cloud/values.yaml	Updated documentation to describe the nested additionalApps value shape, clarifying that each app entry contains a label (required) and optional image field for logo override. Example configurations were adjusted accordingly.
Template Implementation charts/theia-cloud/templates/landing-page-config-map.yaml	Added template logic to lookup optional image or Image fields from app entries and render them into the config.js output via templating. Existing fields and structure remain unchanged.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Suggested labels

ready to merge

Poem

🐰 A carrot-colored override, so fine,
Images now dance in each app's design,
Labels and pictures, together they play,
In Helm's gentle templates, hooray! Hooray! 🎨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'feat: forward landing page app image overrides' accurately and concisely describes the main change: adding support for optional image overrides in the landing page app configuration.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/add-landing-app-image-override

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