Adopt the live ChatGPT usage API (found via github.com/rygel/AIUsageTracker, MIT)
so Codex % is fresh every poll instead of only as fresh as the last local
rollout write:
GET https://chatgpt.com/backend-api/wham/usage
Authorization: Bearer <access_token from $CODEX_HOME/auth.json tokens>
ChatGPT-Account-Id: <account_id>
-> rate_limit.primary_window / secondary_window {used_percent, reset_at}, plan_type
poll() now tries the live endpoint first and falls back to the rollout snapshot
when the token is missing/expired/offline (we read the current OAuth token but
don't refresh it). Live-first fixes the staleness of the rollout-only approach:
verified live s=1% (5h, resets 300m), w=0% (7d, resets 10080m), st="Plus" — a full
fresh window vs the old stale past-reset heuristic.
+4 tests (live preferred, limit_reached->limited, 401->rollout fallback, no-auth
->rollout). 126 passed, 2 Linux-only failures (baseline).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
