Fix content shift in editor if gallery is empty

[uldisrudzitis]

Fix content shift in editor if gallery is empty: shows placeholder on entry hover

Summary by CodeRabbit

• Style
  • Empty gallery areas now collapse automatically, reducing unnecessary whitespace.
  • Gallery areas smoothly expand when the related entry is hovered or focused.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: f9cd4677-41ca-4ec4-b114-d90f46dafaa5

📥 Commits

Reviewing files that changed from the base of the PR and between 5fca696 and b8144a1.

📒 Files selected for processing (1)

• engine/css/editor.css.php

Included review availability: Your plan provides up to 2 included reviews per hour; 1 remains after this review.

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📝 Walkthrough

Walkthrough

The editor CSS removes the gallery container minimum height. Empty gallery containers collapse by default and expand to 24px when the containing entry is hovered or focused within.

Changes

Gallery layout behavior

Layer / File(s)	Summary
Empty gallery interaction styling engine/css/editor.css.php	Empty gallery containers use collapsed, overflow-hidden styling. They expand to 24px on entry hover or focus-within with a brief transition.

Estimated code review effort: 2 (Simple) | ~5 minutes

Merge Risk: ⚪ Minimal · up to b8144

This PR makes a localized editor layout adjustment for empty galleries, and no actionable merge-blocking risk remains beyond normal checks and review.

🚥 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 clearly describes the main change. It identifies the content shift problem and the empty gallery condition addressed by the pull request.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1…
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.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1 files.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch enh-fix-entry-editor-layout-shift

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