[diegosouzapw]

Closes #4594

Problem

The Bailian quota fetcher computed per-window percentages (5h / weekly / monthly) internally and returned them as window5h / windowWeekly / windowMonthly, but it never:

1. surfaced a shared quota.windows map (the contract quotaPreflight checks for per-window cutoffs), nor
2. called registerQuotaWindows (the registry the dashboard uses to discover a provider's window names).

So operators could not enforce separate 5h/weekly/monthly cutoffs through the same preflight path other providers use — routing fell back to a single worst-percent signal, under-modeling a near-exhausted shorter window.

Fix (mirrors codex/opencode)

• parseBailianQuotaResponse now also returns a windows map keyed by 5h/weekly/monthly (legacy fields preserved for quotaMonitor / cooldown consumers).
• registerBailianCodingPlanQuotaFetcher now calls registerQuotaWindows("bailian-coding-plan", ["5h","weekly","monthly"]).
• Exported parseBailianQuotaResponse + BAILIAN_QUOTA_WINDOWS for the regression test.

Validation (Hard Rule #18 — TDD)

tests/unit/bailian-quota-windows-4594.test.ts — 3 cases (RED before the change → GREEN):

• parser surfaces a windows map keyed by the 3 windows, values mirroring the legacy fields
• legacy window5h/windowWeekly/windowMonthly + worst-case percentUsed preserved
• getQuotaWindows("bailian-coding-plan") returns the registered windows after registration

Existing bailian-quota-fetcher.test.ts (14) still green. typecheck:core clean, ESLint 0 errors.

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[diegosouzapw]

Closing as a duplicate — #4594 was already fixed by #4610 ("fix(quota): expose Bailian quota windows", merged), which adds the same registerQuotaWindows + quota.windows map for the Bailian 5h/weekly/monthly windows. Superseded; no action needed here.