fix(rectification): narrate exhausted-probe adopt instead of keep-collecting

When leftover probes cannot split adjacent minutes, skip frameless follow-ups and let a no-tool agent explain the stop. Distinguish-card "no" no longer closes a whole evidence domain.

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

frontend/tests/rectification-server-focus.test.ts

@@ -722,7 +722,11 @@ test("collect persist maps occupation to other and health_pressure to health", a
   assert.equal(persistableFocusDomain("occupation"), "other");
   assert.equal(persistableFocusDomain("health_pressure"), "health");
   assert.equal(persistableFocusDomain("education"), "education");
-  assert.equal(persistableFocusDomain("horary"), "horary");
+  // Was: persistableFocusDomain("horary") === "horary".
+  // Now: null. DB check excludes horary; the old assertion locked a write that always failed.
+  assert.equal(persistableFocusDomain("horary"), null);
+  assert.equal(persistableFocusDomain("appearance"), null);
+  assert.equal(persistableFocusDomain("nakshatra"), null);
   assert.equal(persistableFocusDomain(null), null);
   assert.equal(persistableFocusDomain("unknown"), null);
   // 旧 collect:education → 新 collect:other → 保留 unknown/null 不得写入 unknown
@@ -808,3 +812,35 @@ test("collect focus unique conflict retries with a :next question id", async ()
     `collect:relationship:collect_method_evidence:${COLLECT_FOCUS_RETRY_SUFFIX}`,
   );
 });
+
+test("appearance distinguish without a frame is skipped with zero RPC", async () => {
+  const followup: MethodFollowup = {
+    method_id: "nakshatra_boundary",
+    intent: "distinguish_candidates",
+    ask_theme: "nakshatra_trait",
+    domain: "appearance",
+    kind_hint: null,
+    user_prompt_hint: "外表或体质更接近哪一种？",
+    must_not_label: false,
+    choice_frame: null,
+    source: "nakshatra_boundary",
+  };
+  const accounting = fakeAccounting({
+    set_agentic_rectification_conversation_focus: () => {
+      throw new Error("appearance collect must not be written");
+    },
+  });
+  const persisted = await persistServerOwnedFocus({
+    accounting: accounting.client,
+    userId: USER_ID,
+    caseId: CASE_ID,
+    activeFocus: null,
+    decisionReceipt: null,
+    followup,
+  });
+  assert.equal(persisted.status, "skipped");
+  assert.equal(
+    accounting.calls.some((item) => item.fn === "set_agentic_rectification_conversation_focus"),
+    false,
+  );
+});