Lists a directory tree like fd --hidden --exclude .git without following
symbolic links, with the ignore crate of fd and ripgrep for git's ignore
rules. Records travel as payload (kind byte, relative / path, NUL); the
listing stops at maxEntries, maxBytes or timeoutMs with truncated, and a
cancel stops it between entries. hello reports features: ["listFiles"]
so clients can tell older daemons apart.
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