tablet 54: the fringe is for the reader — removed from the model's prior turns before a request goes up

The gate sews its fringe into the delivered reply; the client keeps that
reply as the assistant's turn; the next request carries it back up
inside the model's own history with nothing to say it was added. The
builder's session, behind the gate since this afternoon, ended five
replies in a row with a forged fringe (tablet 53's form), one of them in
the message that promised not to. Bamidbar 15:39: the fringe is seen by
the wearer, the reader — before the model's eyes it is a template.

Shape.unfringed/2 removes every line in the gate's voice (its fringe, a
forgery, the stream's "not examined") from assistant turns; Gate.pass
and Gate.Stream.pass apply it before forwarding, so the rebuke body
inherits it; the caller's turns stay as given; a turn that would be left
empty is left as it came. strip_forged/1 now also strips the stream's
"not examined" line. Tests: Shape.unfringed on both shapes and the edge
cases; the forwarded first and rebuke bodies carry no fringe; the fake
upstream echoes if a fringe reaches it in history and the stream pass
proves it does not. Elixir 622 / 0 failures.

Specs: broken tablets 54, bishe'arecha §III status, Tamid gate contract
and forged_fringe note, KOHEN gate paragraph.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

specs/bishearecha.md

@@ -97,7 +97,10 @@ the gate, never by the model — the model does not sew its own fringe.)
 
 **Status.** Built (2026-10-07): the trailer on the last text block,
 and since tablet 53 (2026-10-15) a fringe the model wrote itself is the
-eighth form, stripped before the gate's own is sewn. The sentence "the
+eighth form, stripped before the gate's own is sewn. Since tablet 54
+(the same evening) the fringe is removed from the model's prior turns
+before a request goes up: it is seen by the reader, never by the model —
+left in the model's own history it became the builder's habit. The sentence "the
 model does not sew its own fringe" was written here on the 7th and
 broken by the builder on the 15th — the trailer on the last text block,
 `X-Bikoret-Bedikah` / `X-Bikoret-Verdict`, and the `bikoret`