fix(rectification): stop discriminator followup from dropping user evidence

Decision and question ranking now share contrast option completion, so a
missing style card cannot deadlock the interview with a dead-end reply.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/tests/rectification-turn-intent-classifier.test.ts

@@ -105,6 +105,9 @@ test("production intent handling contains no semantic regex or positional text p
   assert.ok(route.indexOf("classifyRectificationTurnIntent") < route.indexOf("runV9AgentTurn({"));
   assert.ok(route.indexOf("persistServerOwnedFocus") < route.indexOf("runV9AgentTurn({"));
   assert.ok(fastPath.includes("ask_candidate_discriminator"));
-  assert.match(fastPath, /目前没有可继续区分/);
+  assert.doesNotMatch(fastPath, /目前没有可继续区分/);
+  assert.match(route, /当前几个候选已经构成可信区间/);
+  assert.match(fastPath, /DISCRIMINATOR_EXHAUSTED_NARRATION/);
+  assert.match(fastPath, /!plan\.next_followup/);
   assert.doesNotMatch(route, /classified\.answer_class!/);
 });