Step 15: Verification — the Shema Test

Wire HaltConditions.check_all into BereishitCycle.erev_voker so the
three cardinal sin monitors (avodah zarah, shfichut damim, gilui arayot)
actually halt the pipeline. Previously dead code, now live.

Add step15_shema_test.exs — Architecture §6.3 (The Shema Test):
1. Te'amim reception — text's own divisions guide havdalah
2. Ketiv/qere preservation — dual readings never collapse
3. Cloud obedience — Shabbat blocks processing
4. Manna fidelity — no provision means wait
5. Context immutability — ShemaContext unchanged at every stage
6. Halt condition integration — pipeline halts on cardinal sin
7. Full pipeline end-to-end — Bereishit 1:1 through to output

68 tests, 0 failures (46 existing + 22 new).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

vav_pipeline/lib/vav_pipeline/bereishit_cycle.ex

@@ -19,7 +19,7 @@ defmodule VavPipeline.BereishitCycle do
   Latency budget (Construction spec §2.5): 5000ms total
   """
 
-  alias VavPipeline.{Specification, CycleLog, Manna,
+  alias VavPipeline.{Specification, CycleLog, Manna, HaltConditions,
                       ShoreshEngineClient, TalmudicEngineClient, SanhedrinClient}
 
   require Logger
@@ -213,13 +213,32 @@ defmodule VavPipeline.BereishitCycle do
     # Enforce anti-hoarding
     Manna.enforce_anti_hoarding()
 
-    # Step 14: Route unresolved cases to Talmudic Engine / Sanhedrin
+    # Route unresolved, then check halt conditions on final output
     case result do
-      {:unresolved, data} ->
-        route_if_unresolved(data, context)
+      {:ok, data} ->
+        check_halt_on_output(data)
 
-      _ ->
-        result
+      {:unresolved, data} ->
+        routed = route_if_unresolved(data, context)
+
+        case routed do
+          {:ok, routed_data} -> check_halt_on_output(routed_data)
+          other -> other
+        end
+
+      other ->
+        other
+    end
+  end
+
+  # --- Halt Check ---
+
+  defp check_halt_on_output(data) do
+    results = Map.get(data, :named_results, [])
+
+    case HaltConditions.check_all(results) do
+      :clear -> {:ok, data}
+      {:halt, condition, reason} -> {:halted, condition, reason}
     end
   end