* Add --share-log flag to upload install.log to paste.rs
* Apply ruff-format to share_log.py
* Rework share-log per review: subcommand, TUI confirmation, truncate large logs
* Replace curl/SysCommand with urllib.request, remove defensive try/except
Per review: use stdlib urllib instead of shelling out to curl,
drop unnecessary try/except around TUI confirmation,
remove tempfile (content is passed directly as bytes).
* Fix TUI imports after ui module was pulled one level up (#4515)
* Decouple share_install_log from TUI module
* Add unit tests for share_install_log function
* Update docs to use share-log subcommand syntax
Daniel Girtler
Softer