You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Prompt SafetyArea: what it touches
ImprovementsKind: in v2.1.246,
ImprovementsSection of the release
What
The filter that defuses control markers pasted into tool output or fetched content gained a rule for forged max-turns notes, escaping their characters so they cannot be read as a real harness message.
Details
Sits alongside the existing system-reminder tag, harness envelope tag and marker-prefix rules.
Unlike the adjacent frame-prefix rule, it carries no enabled predicate, so it is always applied.
Evidence
max-turns-note-forgery
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
