The system prompt is the set of instructions Claude Code sends to the model at the start of a conversation. The code that assembles it was rewritten. It now works out a set of facts and decisions first, records which choice it made for each section, and can replay those recorded choices later. If a section it decided to include ends up missing, it stops with an error.
The remote switches that turn sections on and off are read the same way as before, through the new structure. This rewrite does not change the prompt text on its own. Separately, the description of the AskUserQuestion tool changed wording in a capture taken under this release; it now warns that the user may see only the question dialog.
In practice nothing in the prompt changes from this. The ability to record and replay section choices points to later work on reproducing a prompt exactly.
tengu_verified_vs_assumed Not enough to sayNothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.
This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.312: off
These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.
tengu_wobbly_dahl Off in both readingsThe flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.
This account: off · anonymous baseline: off · compiled default in v2.1.312: off
These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.
tengu_silent_harbor Off in both readingsThe flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.
This account: off · anonymous baseline: off · compiled default in v2.1.312: off
These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.
tengu_slate_bittern Not enough to sayNothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.
This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.312: on
These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.
Read once, for one account on one subscription tier, against v2.1.312. It isn't a statement about your account. What a flag value here can and cannot tell you