Trusted base: d5103c44944cf139330907124a1db65bac64e18e

First checkout focused run:
ThreadDetailPromptArea.test.tsx (29 tests | 1 failed | 28 skipped)
Expected updateThreadMutate to receive { id: "thr_1", reasoningLevel: "high" }.
Actual calls: 0.

Second clean checkout full-file run:
ThreadDetailPromptArea.test.tsx (29 tests | 1 failed)
The new persistence assertion failed; the other 28 tests passed.

Isolated live run:
The follow-up request event recorded reasoningLevel "high".
The thread default execution endpoint still returned reasoningLevel "max".
The selector stayed High through turn completion and returned to Max after reload.