diff --git a/app/src/main/java/com/k2fsa/sherpa/onnx/MainActivity.kt b/app/src/main/java/com/k2fsa/sherpa/onnx/MainActivity.kt
index 90358bd..d01fd22 100644
--- a/app/src/main/java/com/k2fsa/sherpa/onnx/MainActivity.kt
+++ b/app/src/main/java/com/k2fsa/sherpa/onnx/MainActivity.kt
@@ -221,6 +221,10 @@ class MainActivity : AppCompatActivity() {
     private val onsetMinSamples = 19200     // 1.2s 开口窗
     // 喂料恒定滞后(2026-09-16):识别流滞后 1.2s 喂入,切点前的音频可改道;
     // 全局字幕延迟 ~1.2s 的代价换取换人零串行
+    // 主动撤销的强度门槛(2026-09-16 实锤:短插嘴混合窗复核出 0.5~0.6 弱匹配,
+    // 二元"认得出"误撤了 0.04 深低的真实异常;同人确认分实测 0.70~1.00,
+    // 0.68 取安全带) —— 复核低于此分只留痕不撤销,让切换立住
+    private val revertCancelMin = 0.68f
     // 快速滚动通道(2026-09-16 用户三次拍板后终定 C:维持 2s 窗——最快档,
     // 接受误切闪烁,由并回自愈兜底)。窗长演化留档:2s(风暴,单窗20发/5min)
     // →3s(折中)→ 终选回 2s;护持:连续两窗/注册表复用/销案/冷却/并回自愈。
@@ -1819,16 +1823,26 @@ class MainActivity : AppCompatActivity() {
     ) {
         val acc = SpeakerRecognition.computeEmbedding(samples, sampleRateInHz)
             ?: return
-        val pre = SpeakerRecognition.registry.search(acc, speakerThreshold)
-            ?: nearestAttribution(acc, SpeakerRecognition.registry, verdictFallbackMin)
+        val r = SpeakerRecognition.registry.nearestRank(acc)
+        val pre = r.name
+        val score = r.score
         when {
-            pre != null && pre == active -> {
-                Log.i(TAG, tag + "-CANCEL-LATE known=$pre(active) active-heal")
+            pre != null && pre == active && score >= revertCancelMin -> {
+                Log.i(TAG, tag + "-CANCEL-LATE known=$pre(active)" +
+                        " score=" + "%.2f".format(score) + " active-heal")
                 // 主动善后:不再被动等句子结束(长句让错标挂几十秒),立即撤销
                 uiHandler.post { revertOnsetSwitch(label, pre) }
             }
+            pre != null && pre == active -> {
+                // 弱匹配(短插嘴混合窗常见 0.5~0.6):不撤销,让切换立住
+                Log.i(TAG, tag + "-WEAK-SAME known=$pre" +
+                        " score=" + "%.2f".format(score) +
+                        " < $revertCancelMin keep-switch")
+            }
             pre != null ->
-                Log.i(TAG, tag + "-RECHECK known=$pre label=$label (verdict migrates)")
+                Log.i(TAG, tag + "-RECHECK known=$pre" +
+                        " score=" + "%.2f".format(score) +
+                        " label=$label (verdict migrates)")
             else -> SpeakerRecognition.registry.addAuto(label, acc)
         }
     }