gate: tablet 52 — the fringe quoted couplings as sentences on the first real reply

checks.grounding.ungrounded holds coupling strings ("coupled(claim(1),
not_in_sources)"), not sentences; the fringe called Access.get/3 on a
string and the first real reply from Claude through /gate/anthropic
answered 500 CHATAT_UNEXPECTED (after recording its bedikah). The
sentence is now looked up by claim index in the check's claims; a test
produces an ungrounded claim. Broken Tablets tablet 52. Elixir 593/0.

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

vav_pipeline/test/gate_test.exs

@@ -191,6 +191,17 @@ defmodule VavPipeline.GateTest do
     refute Map.has_key?(pass.shorashim, :rebuked)
   end
 
+  test "tablet 52: an ungrounded claim's sentence reaches the fringe (the grounding check lists couplings, not sentences)" do
+    forward = fn _, _, _, _ -> {:ok, 200, %{"model" => "claude-test", "content" => [%{"type" => "text", "text" => "Revenue rose 9% to 14M."}]}} end
+    examiner = fn _o, _p, _q, _s -> {:ok, %{plain() | "sources" => [%{"id" => "user_1", "length" => 40}], "claims" => [%{"index" => 1, "sentence" => "Revenue rose 9% to 14M.", "anchors" => [], "self_reference" => nil, "hedged" => false, "invokes" => []}]}} end
+    checker = fn ref, _c, _trace, _g -> {:ok, %{"status" => "halt", "violations" => ["halt(golden_calf,#{ref},uncoupled(claim(1)),...)"]}} end
+    assert {:ok, pass} = Gate.pass(:anthropic, body(), "sk-good", opts(forward: forward, examiner: examiner, interpretation_checker: checker))
+    assert pass.bedikah.verdict == :lo_tov
+    [%{"text" => text}] = pass.reply["content"]
+    assert text =~ "golden_calf (Shemot 32:4): \"Revenue rose 9% to 14M.\""
+    assert Shape.rebuke_text(pass.bedikah, pass.shorashim.anchors) =~ "golden_calf (Shemot 32:4)"
+  end
+
   test "rebuke once: the second reply is examined, linked to the first, and is the one delivered" do
     assert {:ok, pass} = Gate.pass(:anthropic, body(), "sk-good", opts(rebuke: :once))
     assert pass.first.verdict == :lo_tov