to: runner-1
---
## Fix assignment (**LAST FIX** (5 of 5). Report the diff, then stand by for rotation — do not accept further fix assignments.)

File: `src/auth.py`
Problem:
```
x
```
Change:
```
y
```
Acceptance:
```
z
```

Make the edit, send the draft diff back for review, and await CONFIRM / REVISE. Do not drift into unrelated refactors.