The cockpit deploy workflow rollout-restarted deploy/fxhnt-dashboard, which
briefly overlaps two tailscale sessions on the same identity -> session race ->
the external dashboard.fxhnt.ai proxy link goes stale and the cockpit reads
'down' after every deploy (observed 2026-07-15). The dashboard's tailscale
sidecar serves the public URL, so it must be scaled to 0 (clean session
teardown) before a fresh non-overlapping one comes up. git-sync re-pulls src the
same way, so code still updates. dagster keeps rollout restart (no external
proxy). See reference_fxhnt_dashboard_proxy.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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