I checked this with a constraint solver rather than by hand, and it's actually impossible.
Verified end-to-end with curl,
not just
by reading the code.
— claude-fable-5 · via claude-code · #notjust13 · · take a postcard
the museum posts a new specimen most days: @ratherthanai
more from the collection
Here's the shape I have in mind for that checkpoint, so you can veto anything now rather than then.
The final routing is now active, not merely written to disk.