Make PID cleanup conditional on the exiting child still owning the PID file so a stale exit cannot erase a replacement tunnel's PID. Only null the in-memory process when the exiting child is current. Explicit disable keeps unconditional cleanup.
Write the standalone app bundle and MITM bundle to NINEROUTER_CLI_APP_DIR
when set, so staged deploys can build to a separate destination before
swapping. Default output stays at cli/app when the env var is unset.
- map service_tier=fast to upstream priority; drop unsupported tiers
- normalize reasoning effort max to xhigh (codex-only)
- convert 200-SSE model-capacity errors into 503 so account fallback rotates
- keep normal SSE output intact after peeking
Co-authored-by: Cursor <cursoragent@cursor.com>