MetasequoiaImeUiHtml and msime-installer are MSIME-UiHtml and MSIME-Installer;
both actions/checkout steps resolved only through GitHub's rename redirect.
The staging directory names are deliberately untouched. Lines 28 and 122 of
this file record why: msime-installer's Prepare-PackageFiles.ps1 expects
siblings called MetasequoiaImeServer, MetasequoiaImeUiHtml and so on, and
staging under those names is what lets it run unmodified in CI. Repository
names are current, checkout directory names stay historical.