namesReadOnly

Whether the node is refusing writes while still serving reads.

Two wordings mean the same thing to a caller: the explicit read-only state, and a strict-mode limit on disk or memory, which is the same event with the cause named.

Deliberately substrings rather than exact strings, so the wording may change without turning a read-only node back into an auth failure. When nothing matches, the mapping falls back to what these failures were before the state was modelled, so an unrecognised message costs the caller nothing they had.