fix(quota): bound and log the active quota fetch path

[iceteaSA]

The active quota path (boot seed, /openai-quota, reset preview → refreshAllQuota → whamUsageFn / token refresh) had no fetch timeout, no logging, and no failure surfacing. When the upstream API stalls, that renders as an indefinite "checking…" in the quota dialog, a silently-dead boot seed (.catch(() => {})), and zero log lines — indistinguishable from the plugin being broken. We hit exactly this in a live session: quota worked in the morning, froze for ~2h, then self-recovered with no code or config change. The WS header push kept working throughout (different socket), which is what pointed at the active path.

Changes:

• AbortSignal.timeout(15s) on the wham/usage fetch and the token-refresh fetch (core/provider.ts). The refresh lock/lease is released in finally, so a timed-out refresh cannot strand a held lease.
• AbortError/TimeoutError classified transient (core/backoff.ts) so a timeout gets the short retry backoff, not the long non-transient delay.
• Structured start/success/failure logging on the quota channel (provider.ts, refresh-all-quota.ts), and the boot-seed catch now logs a warning instead of swallowing.
• The quota dialog shows fetch failed — Refresh to retry on failed accounts instead of "checking…" forever (commands.ts).

All three parts are covered red-first (never-resolving fetch → bounded rejection; logger spies; dialog payload failure row). Gate: build, tsc, 680/680 tests, biome clean. Cross-family reviewed (M3 thinking): approve 0 must / 0 should — verified the lease-release-on-abort path, the transient classification of Bun's timeout error shape, and that the shared whamUsageFn doesn't conflict with the reset preview's own 60s bound.

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Summary by cubic

Bounds and logs the active quota fetch path to avoid indefinite “checking…” when upstream stalls. Adds a 15s timeout, classifies timeouts as transient for quick retries, and shows a clear retry message in the quota dialog.

• Bug Fixes
  • Added AbortSignal.timeout(15s) to whamUsageFn and codexRefreshFn requests.
  • Classified AbortError/TimeoutError as transient in backoff to use short retry delays.
  • Added structured start/success/failure logs on the quota channel; boot quota seed now logs warnings on failure.
  • Quota dialog now shows “- : fetch failed — Refresh to retry” instead of hanging on “checking…”.

^{Written for commit 698a301. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 8 files

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