Review fixes for several repositories in one project:
- A path equal to a nested repository's root (a submodule's entry, an untracked
clone) belongs to the enclosing repository, in the backend and the Commit view.
It was routed to the nested repository as ".", so Rollback ran `git restore` and
`git clean` over the whole submodule and Commit staged everything in it.
- Repository-scoped commands take the repository root exactly and fail when it is
gone instead of running in an enclosing repository; path-based ones resolve the
file's repository (Project::with_repo_of).
- The rescan on a repository appearing or going watches `.git/HEAD`: the watcher
never reports a `.git` path itself, so the old check never fired.
- Status skips a repository that cannot be read; refresh falls back to the primary
repository when the selected one is gone instead of failing every time.
- Commit and Compare-with-Local diffs resolve repository-relative paths against the
selected repository's root, not the project root.
- Update Project and Fetch go on after a failing repository and report the failures
together; Update skips repositories with a detached HEAD or no upstream.
- The Push dialog leaves out a repository that cannot be read.
- Shelve and patches fail clearly for changes of a nested repository instead of
leaving them out silently (they still support the main repository only).
- Fix the repository discovery test on Windows (path separators); Chinese text for
the new strings.
Only the repository containing the project root was known, so nested clones and
submodules (or a folder of side-by-side service repositories) showed no changes and
could not be committed or pushed. The project now has IDEA's VCS roots: the enclosing
repository plus those found below the project (scanned in the background, rescanned when
a .git appears or goes). Status covers all of them; path-based commands go to the file's
repository and repository-scoped ones take the selected repository.
The Commit view groups changes by repository and commits each one with included changes;
the branch widget names the selected repository and switches between them; Update Project
and Fetch run in every repository; Push lists every repository with outgoing commits; a
repository that stops in a merge or rebase is selected so Continue / Abort act on it.
Closes#12
l0ng-ai