Resolve a runaway CPU incident where background Claude rate-limit usage
probes could inherit a root working directory (such as `/` or `C:\`) and
index the entire disk.
- Force hidden Claude and Codex usage PTYs to spawn inside a small,
dedicated directory under user data or temp.
- Thread AbortSignal through rate-limit fetchers to immediately kill
and reap in-flight PTY processes when RateLimitService stops.
- Harden daemon and local PTY defaults to reject root-like working
directories for automated agent startups.
Jinjing
3dc1b2b5ab