fleet status matches the roster by node name instead of nodeId

[khaliqgant]

Split out of #1432 (item 5). Fixes 1–3 landed in #1439; this is a separate command with a separate matching bug.

Problem

fleet status matches the roster by node name, not nodeId. Two observed failures:

1. It reported no node named "kjg-laptop" in the workspace while holding the correct nodeId in the same payload.
2. Separately, it matched an unrelated stale node that happened to share the repo-basename name.

Expected

Match on nodeId when one is available in the payload. Name matching should be a fallback at most, and a name collision should not silently resolve to the wrong node.

Refs #1432, #1439