If the operator entered an endpoint without a port (e.g. "10.10.90.165"
instead of "10.10.90.165:51820"), that value was written verbatim into every
peer config. WireGuard requires the endpoint as host:port, so the WireGuard app
rejected the QR/file import as "keine gültige WireGuard-Konfiguration" — the
real cause of the invalid-config errors (the QR-size fix in 0.9.42 was secondary).
Normalise host-side: append the listen port when the endpoint has no colon, in
both _write_server_conf (setup — covers the dashboard and interactive paths) and
_set_endpoint (later changes). Verified: bare host -> host:port, host:port left
as-is, DNS host -> host:port; write-bridge smoke test still passes; shellcheck
clean. setup_endpoint_hint (de/en) now documents the host:port format.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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