ken is HAOS (no SSH/docker exec path), so it needs a REST/WebSocket-only
adapter: automations/scripts/scenes via one GET per
/api/config/<domain>/config/<id>, dashboards/area+entity registries/
input_* helpers via the HA WebSocket API (read-only commands only).
scripts/ha/lib/ha_api.py and ha_ws.py never take a token as a value —
only a token_path, read from disk in-process — so the bearer token never
touches a subprocess argv or a log line. ha_ws.py depends on the optional
websocket-client package and raises a clear, actionable ImportError if
it's missing rather than a raw traceback; import.sh still completes the
REST-only part of the import in that case.
Automations/scripts/scenes reuse split.write_split() so both adapters
produce byte-identical config/<instance>/ layouts and the same
idempotent stale-file cleanup on re-run.
docker-exec adapter logic is untouched.
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