Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
System PromptArea: what it touches
In DevelopmentKind: in v2.1.251,
In DevelopmentSection of the release
What
The system prompt is assembled from named sections, and a further one has been added next to an existing similarly named section, while the block that establishes Claude's identity is now computed through a different check.
Details
What the new section contains and what makes it appear are not determined by the surrounding code.
Evidence
yc("brook_heron", () => h8t(u))
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
