The healthcheck tried HTTPS first (curl -fsk https://...) when HTTPS
was disabled. The TLS ClientHello to a plain HTTP listener hung the
sync worker indefinitely. With 2 workers, both got stuck, blocking
all real HTTP requests.
Fix: try HTTP first, add --max-time 3 to release quickly on failure.
Compose override uses HTTP-only to match HTTPS_ENABLED=false default.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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