Change Icon Library asset location

[desrosj]

The Icon Library image files are images, so they should live in the wp-includes/images/ directory.

This updates the build script to:

• copy the icon library SVG files to wp-includes/images/icon-library instead of wp-includes/icons
• Moves the manifest.php file to the wp-includes/assets/ directory.
• Gives the manifest.php file a more specific name: icon-library-manifest.php
• Remove gutenberg- from the corresponding grunt copy tasks.
• Removes an unnecessary trailingslashit() call in the icon registry class.

Trac ticket: Core-64393

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Pull request overview

Updates WordPress core’s Icon Library asset layout so SVGs live under wp-includes/images/ (as images) and the generated manifest lives under wp-includes/assets/, aligning runtime lookups with the new build output locations.

Changes:

• Move Icon Library SVG output to wp-includes/images/icon-library and rename/relocate the generated manifest to wp-includes/assets/icon-library-manifest.php.
• Update WP_Icons_Registry to load the manifest and SVGs from their new locations (and remove the redundant trailingslashit() call).
• Adjust ignore/build-clean patterns to account for the new output directory and temporary cleanup of the old one.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/wp-includes/class-wp-icons-registry.php	Updates filesystem paths used by the icons registry to match the new manifest and SVG locations.
Gruntfile.js	Splits/renames copy tasks, changes destinations for SVGs and manifest, and adds a manifest transform to match the new SVG directory structure.
.gitignore	Updates ignored generated output path for the icon library SVG directory.

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[github-actions]

A commit was made that fixes the Trac ticket referenced in the description of this pull request.

SVN changeset: 62073
GitHub commit: 28646ea

This PR will be closed, but please confirm the accuracy of this and reopen if there is more work to be done.

[desrosj]

I accidentally included "Fixed" instead of "See" in r62073.

[mcsf]

I have no strong opinion here, I'd say LGTM, but also cc @t-hamano in case Aki disagrees with this.

[mcsf]

Why drop the "gutenberg-" prefix, since it's kept for the other tasks?

[desrosj]

I'd like to remove gutenberg- entirely from these steps over time. While they come from the Gutenberg repository, Gutenberg = Core. In my opinion, if we are unable to reference each part of the code base by a descriptive name without a gutenberg- prefix, then we've done something wrong.

[mcsf]

IIRC, I originally set svn:ignore to reflect the .gitignore settings for icons. Something for you to keep in mind when you commit. :)

[desrosj]

Thank you, @mcsf! Noted on the svn:ignore. Added @t-hamano for a third set of eyes.

[desrosj]

I'm going to commit this so that it's included in the silent beta 6 later today.

[desrosj]

Merged in r62077.

[t-hamano]

Sorry for the late reply! All changes look good to me👍