Add SSL verification bypass option via GIT_SSL_NO_VERIFY environment variable

- Add GIT_SSL_NO_VERIFY env var support (1/true/yes/on) to disable SSL cert checks during git clone
- Monkey-patch urllib3.PoolManager to set cert_reqs=CERT_NONE when SSL verification is disabled
- Suppress InsecureRequestWarning when SSL verification is bypassed
- Restore original PoolManager in finally block to avoid side effects
- Add urllib3 to dependencies list in README
- Run ruff format across entire codebase (

Author: locchh

README.md

@@ -89,6 +89,7 @@ GITLAB_URL=https://gitlab.mycompany.com
 - [Dulwich](https://www.dulwich.io/) — pure-Python git implementation used for cloning
 - [Textual](https://textual.textualize.io/) — TUI framework
 - [Rich](https://github.com/Textualize/rich) — text formatting and ANSI parsing
+- [urllib3](https://urllib3.readthedocs.io/en/stable/) — HTTP client used for API requests
 
 ## License