peah: hear the verse the question is standing in (kohen Day 7, tablet 30)

Every Hebrew question was answered against Bereishit 1:1 —
extract_scope_from_question/1 ignored its argument. ויאמר אלהים יהי אור
(1:3) and ויהי ערב ויהי בקר (1:5) came back sourced from 1:1 with roots
"not in this verse". The grounding check passed by construction.

- L1Index: inverted index consonants → verses over l1/torah, built in
  handle_continue right after start (5853 verses, ~1 s), read-only after.
- ScopeResolver: explicit reference (bereishit/Genesis/בראשית 1:3) first;
  then quoted Torah — most question words in a verse, ties to the verse
  where they stand together in order, then Torah order; else default.
  A reference to a verse L1 lacks is a 422 KIYOR_VALIDATION_FAILED with
  the correction, not a silent 1:1.
- Router: processing.scope reports verse + resolved_by; a default scope
  carries a note saying the verse was assumed, not heard.
- test/tablet30_scope_test.exs: the five Day-7 offerings through the
  real router land on 1:1, 1:1, 1:3, 1:5, 1:1; Shema → Devarim 6:4;
  reference, invalid reference, default confession. 14 tests.
- KOHEN.md Day 7: what to expect in sources[0].ref.

454 tests, 0 failures on seeds 0 1 2 3 42 99. Seed 191243 fails
LivenessTest before and after this change — pre-existing, not touched.

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

vav_pipeline/lib/vav_pipeline/bigdei_kodesh/router.ex

@@ -314,16 +314,34 @@ defmodule VavPipeline.BigdeiKodesh.Router do
         })
 
       :available ->
-        # Pe'ah uses minchah protocol — simplest offering
-        scope = extract_scope_from_question(question)
+        # Pe'ah uses minchah protocol — simplest offering.
+        # The verse is heard from the question (tablet 30), not assumed.
+        case VavPipeline.ScopeResolver.resolve(question) do
+          {:error, {:invalid_reference, ref}} ->
+            send_error(conn, 422, "KIYOR_VALIDATION_FAILED", %{
+              issue: "INVALID_SCOPE: #{ref} is not a verse in L1",
+              correction:
+                "Name a verse that exists — chapter and verse within the five books " <>
+                  "(for example \"bereishit 1:1\" or \"devarim 6:4\").",
+              resubmit: true
+            })
 
-        input = %{
-          source: "peah",
-          verse_scope: scope,
-          content: question
-        }
+          {:ok, scope, resolved_by} ->
+            process_peah(conn, question, scope, resolved_by)
+        end
+    end
+  end
 
-        case VavPipeline.process(input) do
+  defp process_peah(conn, question, scope, resolved_by) do
+    input = %{
+      source: "peah",
+      verse_scope: scope,
+      content: question
+    }
+
+    scope_report = scope_report(scope, resolved_by)
+
+    case VavPipeline.process(input) do
           {:ok, data} ->
             send_json(conn, 200, %{
               answer: format_answer(data),
@@ -331,7 +349,8 @@ defmodule VavPipeline.BigdeiKodesh.Router do
               processing: %{
                 roots_consulted: Map.get(data, :roots_activated, []) |> format_roots(),
                 deliberation: "none",
-                cycle_phase: "voker"
+                cycle_phase: "voker",
+                scope: scope_report
               },
               disclosure: disclosure()
             })
@@ -343,7 +362,8 @@ defmodule VavPipeline.BigdeiKodesh.Router do
               processing: %{
                 roots_consulted: Map.get(data, :roots_activated, []) |> format_roots(),
                 deliberation: "single-judge",
-                cycle_phase: "voker"
+                cycle_phase: "voker",
+                scope: scope_report
               },
               note: "This question produced an unresolved result — teiku.",
               disclosure: disclosure()
@@ -379,7 +399,6 @@ defmodule VavPipeline.BigdeiKodesh.Router do
               correction: "Contact system operators",
               resubmit: false
             })
-        end
     end
   end
 
@@ -808,10 +827,21 @@ defmodule VavPipeline.BigdeiKodesh.Router do
   defp format_since(nil), do: "all_time"
   defp format_since(%DateTime{} = dt), do: DateTime.to_iso8601(dt)
 
-  defp extract_scope_from_question(_question) do
-    # Default scope for pe'ah — Bereishit 1:1
-    # In production, this would parse the question for verse references
-    %{book: "bereishit", chapter: 1, verse: 1}
+  # How the verse was chosen, said out loud in the response. A default
+  # scope is a confession, not a grounding (tablet 30).
+  defp scope_report(scope, :default) do
+    %{
+      verse: scope_verse(scope),
+      resolved_by: "default",
+      note:
+        "The question named no verse and quoted no Torah the index could find, " <>
+          "so the default scope was used. Roots are read against it, not against " <>
+          "the question's source."
+    }
+  end
+
+  defp scope_report(scope, resolved_by) do
+    %{verse: scope_verse(scope), resolved_by: to_string(resolved_by)}
   end
 
   defp parse_scope(nil), do: %{book: "bereishit", chapter: 1, verse: 1}