The product README was under windows/ after the move, but it was never a component readme: it is the download page, the feature guide and the contribution guide for the whole product, so it goes back to the root and windows/ gets a real component readme.
AGENTS.md at the root now carries the repository map, the component boundaries that used to be cross-repository rules, and the release process, since the scripts that process drives live at the root. The component files keep what is genuinely theirs and say which paths they are relative to. References that named sibling repositories now name sibling directories, and the lock documentation records that Server, the pages, the GUI framework and the installer are no longer inputs to pin.
Windows, Server and UiHtml each carried their own gitlink to MSIME-Engine, all three pinned to the same commit, and Server carried a gitlink to MSIME-UI that is now the ui/ component. Git only reads the root .gitmodules, so the nested ones had to go regardless.
The engine and the two third-party dependencies now live once at vendor/MetasequoiaImeEngine, vendor/opencc and vendor/cpp-pinyin. Server reaches them through MSIME_VENDOR_DIR and builds ui/ as an out-of-tree subdirectory; the Windows tip's relative contract includes gained the extra level; the ui-html contract sync and the Server env/table generators follow the engine to its new location.
Preparation for folding Server, UI, UiHtml, Installer, ImeLog and TsfEditControl into this repository. The Windows tip's own sources, build files and local build scripts move under windows/ so every component sits at the same level. Product-level files stay at the root: the lock, the release manifest, the shared CI scripts, the integration tests, the docs and the Engine submodule.
Evan Hu