## Summary
SSH Git dependencies without user information could crash during parsing because the TypeScript resolver expected every authority to contain `user@host`. Bracketed IPv6 addresses exposed a second issue: colons inside the address were mistaken for an SCP-style separator.
This change keeps the TypeScript and Rust implementations aligned:
- the host lookup falls back to the full authority when no user information is present;
- only the part after a bracketed host is inspected for an SCP separator or port;
- the Rust rewrite finds the final separator directly with `rfind(':')`, which expresses the intended operation without allocating a temporary vector;
- regression coverage includes no-user-info URLs, bracketed IPv6 hosts, ports, SCP-style paths, and path extraction.
---------
Co-authored-by: Zoltan Kochan <z@kochan.io>
