Two missions
Recovery protects the engine. Floor protects the account.
The stability brake and the containment brake sound like adjacent settings on one dial, but they encode different missions. In Recovery, the working hypothesis is that nothing is broken: drawdowns of this depth are within the normal envelope of a live edge, and the system's job is to keep the machine running smoothly while modestly narrowing the envelope — protect the engine, don't rebuild it. In Floor, the working hypothesis flips: a drawdown of this depth is unusual enough that the possibility of genuine dysfunction — edge decay, execution degradation, regime mismatch — must be treated as live. The system's job becomes arresting the descent and interrogating the cause, with the climb back deferred until the descent is confirmed over.

