The workspace index cannot answer questions about an installed framework or
SDK, and in plugin development that is where most of the reading goes: 64 of
80 tool calls in one real session went to the harness checkout under
/usr/local/lib/node_modules to look up the API being implemented.
A root is entered whatever it is called, and its dependencies are not: a
path ending in node_modules/... is the normal way to name a package tree,
while a node_modules below the root is somebody else's code. A result
carries the label that says which tree it came from and an absolute
sourcePath, the only form a follow-up read can resolve.
The tool description now also claims the move this replaces - searching
before reading files to find out what a module contains.