ADFA-6142 | Migrate AI Literacy Course into the plugin gallery

[hal-eisen-adfa]

Moves the AI Literacy Course addon from the repository root into plugins/, so it publishes through the normal addon pipeline instead of staying held back.

Closes ADFA-6142.

Why the directory is AI-Literacy-Course

The catalog requires each hyphen-separated part of a directory name to start with a capital (model.directory_is_valid), so ai-literacy-course cannot be published as-is.

The capitalised name changes nothing else. The slug is the directory lowercased, so it stays ai-literacy-course, and the display name is the directory with spaces, so it stays AI Literacy Course. That means pluginName, plugin.id, plugin.name, rootProject.name and the documentation filename are all untouched.

Changes

Change	Where
Move, with history preserved on all 26 files	ai-literacy-course/ → plugins/AI-Literacy-Course/
../libs/*.jar → ../../libs/*.jar for the extra directory level	build.gradle.kts:60, settings.gradle.kts:15,16
Drop the local Gradle wrapper, use the shared root wrapper	gradlew, gradlew.bat, gradle/wrapper/
Add addon.json, which the catalog requires	plugins/AI-Literacy-Course/addon.json
Set the page title to exactly AI Literacy Course	ai-literacy-course.html:6
Remove the skip entry, correct the header note to "five remaining"	tools/addons/skip.txt
Add the Examples row	README.md
Correct the heading, build commands and directory tree	plugins/AI-Literacy-Course/README.md

Why the skip entry goes

skip.txt held the addon back because "other pull requests are in flight against them". No open pull request touches ai-literacy-course/ — checked #101, #100, #99, #96, #88, #30 and #22 — so the reason no longer holds. The other five AI addons stay skipped and are not touched.

Reviewers: one behaviour change to confirm

update-libs.yml:100 releases plugins/*/build/plugin/*.cgp. At the repository root the course .cgp did not match that glob; under plugins/ it does, so every "Update libs" release will now carry a ~118 MB asset. This is intended — it is a normal plugin now — but it is a real change in release size and worth a conscious ack.

Verification

Check	Result
addons check	passes
addons discover	lists plugins/AI-Literacy-Course as publishable, not skipped
../../gradlew assemblePlugin from the new location	BUILD SUCCESSFUL, proving the ../../libs classpath and the shared wrapper both resolve
unzip -l on the .cgp	118 MB, and contains assets/ai-literacy-course.zip, assets/pdfjs.zip, both icons, assets/docs/index.html and the manifest

Not verified on a device. This addon extracts its bundle on-device through CourseInstaller, so a green build is necessary but not sufficient. Nothing in this pull request changes extraction or generation logic, so INSTALL_VERSION is deliberately not bumped.

Note for anyone rebuilding by hand: run downloadAssets as its own invocation before assemblePlugin. Combining them in one Gradle invocation fails the implicit-dependency check, which is pre-existing and not introduced here.

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