The CLI decides only what it knows — that --db and --database are the same
thing said twice, and whether a command reads more than one — and hands the
resolved scope down. Nothing rewrites the configuration, so a named database
keeps the name results and citations carry, and a remote one opens the URI
it was configured with rather than the local path standing in for it.
HaikuRAGApp, ChatApp and InspectorApp take that scope and nothing else.
Selection reaches the client through a private constructor, so the public
signature still takes a path or names.
