You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SessionsArea: what it touches
ImprovementsKind: in v2.1.248,
ImprovementsSection of the release
What
Transcript normalisation accepts a list of tool names to keep. Those names are added to the known-tool set and treated as known when rewriting tool call inputs, so historical calls to a tool the current registry no longer offers are not mangled. A companion option lists tool references that were stripped.
Evidence
keptToolNames
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
