docs(health): say how long a stopped display read as healthy

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Chuck
2026-10-03 22:12:34 -04:00
co-authored by Claude Opus 5.5
parent 54fb42180f
commit 9679c7531c
+2 -1
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@@ -135,7 +135,8 @@ def get_health():
# A stopped display service. The heartbeat's absence alone says
# nothing (the dev server, the emulator and Windows write none), so
# the overall status stayed "healthy" with the display down. Together
# the overall status stayed "healthy" with the display down until the
# last preview frame it left aged past 60 s (hardware: stale). Together
# the three signals are definite: systemd says the service is not
# active, the control socket does not answer, and there is no live
# heartbeat (display_state.display_gone, which is never true where