diff --git a/demo/smoke_binding_picker.mjs b/demo/smoke_binding_picker.mjs
index 158d2465..eebed628 100644
--- a/demo/smoke_binding_picker.mjs
+++ b/demo/smoke_binding_picker.mjs
@@ -12,7 +12,7 @@ const out = {};
 Object.assign(out, await page.evaluate(async () => {
   const o = {};
   const c = window.__card;
-  const nativeConfirm = window.confirm;
+  const confirmDanger = c._confirmDanger;
 
   // Пикер читает `showEntities` и `bindingFilter` из открытого диалога, поэтому
   // спрашивать его при закрытом бессмысленно: отдельные сущности устройств не
@@ -30,10 +30,10 @@ Object.assign(out, await page.evaluate(async () => {
   const remove = async (device) => {
     c._openMarkerDialog(device);
     await c.updateComplete;
-    window.confirm = () => true;
+    c._confirmDanger = async () => true;
     await c._deleteMarker();
     await c.updateComplete;
-    window.confirm = nativeConfirm;
+    c._confirmDanger = confirmDanger;
   };
   const markers = () => c._serverCfg.markers || [];
   const tombstones = () => markers().filter((m) => m.removed === true);
diff --git a/demo/smoke_hidden_flag.mjs b/demo/smoke_hidden_flag.mjs
index 909e6612..9e4a35e5 100644
--- a/demo/smoke_hidden_flag.mjs
+++ b/demo/smoke_hidden_flag.mjs
@@ -79,10 +79,10 @@ Object.assign(out, await page.evaluate(async () => {
   const virtualB = c._devices.find((x) => x.virtual && x.name === 'delete-one-b');
   c._openMarkerDialog(virtualA); await c.updateComplete;
   o.deleteForVirtual = !!sr().querySelector('hp-dialog .btn.danger');
-  const savedConfirm = window.confirm;
-  window.confirm = () => true;
+  const savedConfirmDanger = c._confirmDanger;
+  c._confirmDanger = async () => true;
   await c._deleteMarker(); await c.updateComplete;
-  window.confirm = savedConfirm;
+  c._confirmDanger = savedConfirmDanger;
   o.deleteOnlySelectedVirtual = !!virtualA && !!virtualB
     && !(c._serverCfg.markers || []).some((m) => m.id === virtualA.id)
     && (c._serverCfg.markers || []).some((m) => m.id === virtualB.id);
@@ -93,9 +93,9 @@ Object.assign(out, await page.evaluate(async () => {
   const oldPos = { s: readd.space, x: 0.913, y: 0.917 };
   c._layout = { ...c._layout, [readd.id]: oldPos };
   c._openMarkerDialog(readd); await c.updateComplete;
-  window.confirm = () => true;
+  c._confirmDanger = async () => true;
   await c._deleteMarker(); await c.updateComplete;
-  window.confirm = savedConfirm;
+  c._confirmDanger = savedConfirmDanger;
   c._openMarkerDialog(); await c.updateComplete;
   c._markerDialog = {
     ...c._markerDialog,
diff --git a/demo/smoke_optional_space_model.mjs b/demo/smoke_optional_space_model.mjs
index 55670b1a..07d83591 100644
--- a/demo/smoke_optional_space_model.mjs
+++ b/demo/smoke_optional_space_model.mjs
@@ -87,12 +87,12 @@ const result = await page.evaluate(async () => {
   card._pointers.set(113, { x: 10, y: 10 });
   card._drag = { id: 'stale-device', sx: 0, sy: 0, ox: 0, oy: 0, moved: true };
   card._saveConfigDebounced();
-  const confirmBefore = window.confirm;
-  window.confirm = () => true;
+  const confirmBefore = card._confirmDanger;
+  card._confirmDanger = async () => true;
   try {
     await card._deleteSpace();
   } finally {
-    window.confirm = confirmBefore;
+    card._confirmDanger = confirmBefore;
   }
   await settle();
 
diff --git a/demo/smoke_orphan_space_references.mjs b/demo/smoke_orphan_space_references.mjs
index e31e12a4..9e48f631 100644
--- a/demo/smoke_orphan_space_references.mjs
+++ b/demo/smoke_orphan_space_references.mjs
@@ -172,19 +172,19 @@ const out = await page.evaluate(async () => {
     && card._layout['removed-marker'].s === 'gone'
     && !card.renderRoot.querySelector('.dev[data-id="orphan"]');
 
-  let nativeConfirmCalls = 0;
-  const oldConfirm = window.confirm;
-  window.confirm = () => { nativeConfirmCalls++; return true; };
+  let dangerConfirmCalls = 0;
+  const oldConfirmDanger = card._confirmDanger;
+  card._confirmDanger = async () => { dangerConfirmCalls++; return true; };
   card._openSpaceDialog('edit', 'home');
   await card.updateComplete;
   await card._deleteSpace();
   await card.updateComplete;
   const blocker = card.renderRoot.querySelector('hp-dialog [role="alert"]')?.textContent || '';
-  result.deleteExplainsBlockerWithoutConfirmOrWrite = nativeConfirmCalls === 0
+  result.deleteExplainsBlockerWithoutConfirmOrWrite = dangerConfirmCalls === 0
     && blocker.includes('still used by 1 device')
     && !calls.includes('houseplan/space/delete')
     && card._spaceDialog?.spaceId === 'home';
-  window.confirm = oldConfirm;
+  card._confirmDanger = oldConfirmDanger;
   card._spaceDialog = null;
   await card.updateComplete;
 
diff --git a/demo/smoke_registryless_opening.mjs b/demo/smoke_registryless_opening.mjs
index 0d08747c..87906a80 100644
--- a/demo/smoke_registryless_opening.mjs
+++ b/demo/smoke_registryless_opening.mjs
@@ -86,8 +86,10 @@ const out = await page.evaluate(async () => {
     && root().querySelectorAll('.oprow').length === 2
     && root().querySelectorAll('.lockact').length === 1;
 
-  window.confirm = () => true;
-  card._lockAction(lockId, 'unlock');
+  const confirmDanger = card._confirmDanger;
+  card._confirmDanger = async () => true;
+  await card._lockAction(lockId, 'unlock');
+  card._confirmDanger = confirmDanger;
   result.explicitInfoActionStillWorks = serviceCalls.at(-1)?.domain === 'lock'
     && serviceCalls.at(-1)?.service === 'unlock'
     && serviceCalls.at(-1)?.entityId === lockId;