Expose per-window detail (5h / weekly / Opus / Sonnet) on native subscription
rows instead of collapsing to a single percentage, so the bar can show the
binding window, resets, and a burn-rate pace line. Fix the Codex collector to
scan recent session rollouts newest-first for the latest non-null rate_limits
(today's exec-mode session is null) and mark the result stale with its source
time, so Codex quota appears instead of silently vanishing.