A Repo is a Collection (kind='repo') plus a `repository` row, kept up to
date by a recurring Download handled by the new `git` downloader.
* Full history by default (all branches and tags, no --prune; a force
push saves the old HEAD under refs/wrolpi/backup/); snapshot mode
(--depth 1) and a pinned branch are optional. `/tree/<branch>` URLs
select a branch.
* git runs HTTPS-only, never prompts, never runs hooks, and checks out
symlinks as plain files. Upstream disappearing defers the download
with git's error; the local copy is kept.
* Repos are cloned to `repos_destination` (repos/%(repo_tag)s/%(repo_name)s)
and the `repos` directory is always ignored, so repo files are never
indexed.
* repos.yaml is the source of truth (import, dump, backup restore).
* /api/repos: list, create, get, edit, delete (files kept unless
delete_files), update now, and a per-directory file tree. Tagging uses
the collections tag endpoint.
Also:
* run_command/process_runner can merge stderr into stdout (git writes
progress to stderr).
* move_collection deletes an old directory that only holds empty
directories (the move left an emptied .git behind).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>