Split node enrollment from export sync and issue Finder-compatible DAV
credentials so the stack proves the real backend seam before any web UI
consumes it.
Protect the control-plane API with explicit bearer auth, add node-scoped
registration/heartbeat credentials, and make export mount paths an explicit
contract field so mount profiles stay correct across runtimes.
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
