The condition was backwards — it exited with "database already exists"
when the file was found, and tried to open it when it did not exist.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Replace InitNodeService/GetNodeService/GetNodeServiceForUser with thin
NewLocalNodeService/NewRemoteNodeService constructors; move wiring logic
into cmd/root.go (getNodeService helper) and an inline closure in serve.go.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>