8179312ff5
### Motivation
- Prevent inputs like `~//` or `~///etc` from expanding to arbitrary
absolute paths (e.g. `/`) because `Path::join` discards the left side
when the right side is absolute, which could allow config values to
escape `HOME` and broaden writable roots.
### Description
- In `codex-rs/utils/absolute-path/src/lib.rs` update
`maybe_expand_home_directory` to trim leading separators from the suffix
and return `home` when the remainder is empty so tilde expansion stays
rooted under `HOME`.
- Add a non-Windows unit test
`home_directory_double_slash_on_non_windows_is_expanded_in_deserialization`
that validates `"~//code"` expands to `home.join("code")`.
### Testing
- Ran `just fmt` successfully.
- Ran `just fix -p codex-utils-absolute-path` (Clippy autofix)
successfully.
- Ran `cargo test -p codex-utils-absolute-path` and all tests passed.
------
[Codex
Task](https://chatgpt.com/codex/tasks/task_i_697007481cac832dbeb1ee144d1e4cbe)
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| .. | ||
| absolute-path | ||
| cache | ||
| cargo-bin | ||
| git | ||
| image | ||
| json-to-toml | ||
| pty | ||
| readiness | ||
| string | ||