Preserve shortage signals during global pause (Refs #137)

docs/guides/metrics.md

@@ -34,7 +34,8 @@ the URL; refreshes preserve table controls and chart selection.
 The timeline defaults to **Average lobbies running**, split into **With players**,
 **Empty spare**, and **Unknown**. Each bucket divides those lobby-hours by its
 captured wall time, so changing lobby counts remain visible. Collection gaps are
-excluded from that denominator. Switch to the share view to compare proportions,
+excluded from that denominator. The average-lobby axis uses whole-number ticks;
+period details preserve fractional averages. Switch to the share view to compare proportions,
 or hours to compare absolute lobby time. Periods without captured time remain gaps.
 
 The timeline has labelled axes and marks partial edge periods. Select a bar or use
@@ -77,6 +78,11 @@ Game-wide policies apply independently to each supported map variant. Each signa
 links to the policy on **Fleet → Autoscaling**; a map without a policy gets a link
 to add one. Signals are advisory and never change a policy or a lobby.
 
+A global pause appears once above the signals. Historical shortage signals remain
+visible while the fleet is paused, including suggestions to review the maximum
+or spare target. Review these findings and current settings before resuming.
+An individual policy's own pause or disabled state still prompts a policy review.
+
 | Recorded condition                                                                       | Suggested action                                                 |
 | ---------------------------------------------------------------------------------------- | ---------------------------------------------------------------- |
 | No empty lobby for at least 2% of known map time, mostly at or above the current maximum | Review raising the policy maximum.                               |
@@ -137,5 +143,6 @@ before scope filtering, so samples from other groups still end a batch interval.
 their own `capturedHours`. Map rows expose `noEmpty`, `availabilityObserved`, and
 `availabilityUnknown` durations, plus current `policy` context and
 `noEmptyAtMaximum` / `noEmptyBelowMaximum` durations. `pooledAvailability` combines
-map durations and coverage. Policy edits and global pause changes invalidate
+map durations and coverage. `autoscalingPaused` reports the current global pause
+separately from each policy's own `pausedReason`. Policy edits and global pause changes invalidate
 cached metrics reports.