diff --git a/code/th_09_animation.js b/code/th_09_animation.js
index 9d7c300..aee6038 100644
--- a/code/th_09_animation.js
+++ b/code/th_09_animation.js
@@ -341,6 +341,11 @@ FloatBallAppWM.prototype.showPanelPredictiveBackIndicator = function(edge) {
 
 FloatBallAppWM.prototype.resetPanelPredictiveBackVisual = function(panel) {
   try {
+    if (panel && this.state && this.state.toolAppRoot === panel && this.clearToolAppBackPreview) {
+      this.clearToolAppBackPreview(true);
+      this.hidePanelPredictiveBackIndicator();
+      return;
+    }
     if (panel) {
       panel.setAlpha(1.0);
       panel.setTranslationX(0);
@@ -361,6 +366,11 @@ FloatBallAppWM.prototype.applyPanelPredictiveBackProgress = function(panel, even
     if (p > 1) p = 1;
     var edge = 0;
     try { edge = Number(event.getSwipeEdge()); } catch (eE) { edge = 0; }
+    if (panel && this.state && this.state.toolAppRoot === panel && this.applyToolAppBackPreviewProgress && this.getToolAppPreviousStackEntry && this.getToolAppPreviousStackEntry()) {
+      this.state.toolAppBackEdge = edge;
+      this.applyToolAppBackPreviewProgress(edge, p);
+      return;
+    }
     var dir = edge === 1 ? -1 : 1;
     panel.setAlpha(1.0 - 0.18 * p);
     panel.setTranslationX(dir * this.dp(36) * p);
@@ -419,6 +429,12 @@ FloatBallAppWM.prototype.registerPanelPredictiveBack = function(panel, which) {
           onBackProgressed: function(event) { self.applyPanelPredictiveBackProgress(panel, event); },
           onBackCancelled: function() { self.resetPanelPredictiveBackVisual(panel); },
           onBackInvoked: function() {
+            if (String(which || "") === "tool_app" && self.finishToolAppBackPreview && self.getToolAppPreviousStackEntry && self.getToolAppPreviousStackEntry()) {
+              var edge = 0;
+              try { edge = Number(self.state.toolAppBackEdge || 0); } catch (eEdge) { edge = 0; }
+              self.finishToolAppBackPreview(edge, true);
+              return;
+            }
             self.resetPanelPredictiveBackVisual(panel);
             self.handlePanelBack(which, "predictive_back");
           }
diff --git a/manifest.json b/manifest.json
index 5eb72bf..8f28951 100644
--- a/manifest.json
+++ b/manifest.json
@@ -34,8 +34,8 @@
       "size": 7938
     },
     "th_09_animation.js": {
-      "sha256": "1c323579c090e635f9ab52fb26c21151738e9a845e6c1a6ef86fdcc6adc16da6",
-      "size": 35383
+      "sha256": "f5f0f87c7bfefd1a434d6cc14c87464c32d5419dc5381e6a771974abcc65a003",
+      "size": 36270
     },
     "th_10_shell.js": {
       "sha256": "0ed793079c2f6ba7d29f4c0d411705cb72419f45f572cbe37ed32ac16527a8bc",
@@ -68,5 +68,5 @@
   },
   "keyId": "toolhub-targets-2026-rsa3072",
   "schema": 2,
-  "version": 20260513190003
+  "version": 20260513190421
 }
diff --git a/manifest.sig b/manifest.sig
index 62ec13a..8363739 100644
--- a/manifest.sig
+++ b/manifest.sig
@@ -1 +1 @@
-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
+i6ZGfxdczdGE61nAq6GJ0JfrHv/qrzzsQ5vDnHTI2uSAQo9KIClf5UMJmB0UlNZ1UG73OxdxSjFnNgXcGyc2QKKtSBkRNb5bC/49KCFWczaoGidXaGXd28IKjtQu4R+0cw7kS+4GfzN+ucTgBZYu79M4vfs9qsx+dhltSTgeAFzXP4skt7C5sWF6YpDMxuJDNsKQr1EqdssdnVxKQapT03Fpkflp5BBD4O2izkOdXgYKrhPMtRlSjacZn91sw6H2h/XTB4a/ogybxMWrZDv39plIMAdLe4ua/hnifKsjzAR9WnIGAyLOMkQ7lWnt4bspHALBrG2ehahoCqS4DYUZyXAWoePUA/4ZVxQUfi1uxRaQApc/Sbd+RPW7L4gbHIb2xB9aHzNDjQWDrSpIY6b65Y2YgichG1MG21k3yC3N/caggRwtDn6aP/qnZY7ZFJtBbocP4SUdaiaXdOiAdW1nlIrmLWnp47Mg3roEPM97aRMVEnRK55Tit/LCf+gg0+Pf