Soul replaced the shared `isUnsignedCertificate` call in the browser's
session-acceptance check with a local empty-string comparison and every one of
the 18 browser tests still passed, because every test used an empty signature.
A whitespace signature is where the two readings part: the shared route
verifier accepts such a route as unsigned on a loopback local-development
endpoint, and an inline comparison then demands a provider proof for the
session the verifier just let through. The test now opens that session with
three spaces, U+0085 and a no-break-space/tab/newline mix as well as the empty
string, and asserts U+FEFF the other way, since it is whitespace to JavaScript
and a signature to C#.
The mutation runner grew a second target. `shared` is the one verifier, killed
by the cultnet-ts tests; `browser` is `packages/cultmesh-browser/src/index.ts`,
killed by the browser tests. A browser mutation cannot be killed by cultnet-ts
tests, so the killer is the target's own workspace, and each target carries its
own sidecar, control, sentinel and post-restore dist assertion.
Two repairs this pass earned:
- The sidecar is now removed inside the `finally`, right after the verified
restore. A throw mid-run left it behind holding the pre-run bytes, and the
next run "repaired" the file from them, silently reverting everything fixed
in between. That happened here, twice, before it was noticed.
- The NUL in the loopback pre-check's strip regex had been written as a literal
byte rather than an escape. It read the same, but git classified the file as
binary and stopped normalising its line endings, so the whole file diffed as
rewritten. Escaped, along with the ASCII host range beside it.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>