#27385 reports that on macOS the browser sees the xAI 'authorization
received' success page but Hermes still raises xai_callback_timeout.
The loopback HTTP handler was silent — no log line on receipt, no log
line on wait timeout — so triaging the gap between 'browser saw
success' and 'CLI saw timeout' required either a code change or
guesswork.
Adds two INFO log lines:
- Per callback hit (handler): path, has_code, has_state, has_error,
truncated User-Agent. Booleans / fingerprints only — no actual
code/state strings leak.
- On wait timeout: report whether result.code or result.error was
populated at deadline. Distinguishes three failure modes:
1. No hit log + timeout log w/ has_code=False has_error=False
→ xAI's IDP never reached the loopback (firewall, port-binding,
IPv6/IPv4 mismatch, browser blocked private-network access).
2. Hit log w/ has_code=False has_error=False + timeout log
→ xAI hit the loopback without OAuth params (the bare-URL
case the handler already 400s on).
3. Hit log w/ has_code=True + timeout log w/ has_code=False
→ result_lock contention or race; would indicate a real bug.
133/133 in tests/hermes_cli/test_auth_xai_oauth_provider.py,
tests/hermes_cli/test_xai_oauth_pkce_token_exchange.py, and
tests/run_agent/test_codex_xai_oauth_recovery.py.
b0135c741d