From 466e357975a73a02ee1ed0d09935f930d8adebfc Mon Sep 17 00:00:00 2001
From: Victor239 <12621257+Victor239@users.noreply.github.com>
Date: Sun, 22 Mar 2026 12:13:37 +0000
Subject: [PATCH] E-book viewer: skip storage.persist() if persistence already
 granted

Check navigator.storage.persisted() before calling persist(), so tabs
opened after permission was already granted do not trigger a redundant
browser prompt.
---
 src/pyj/read_book/db.pyj | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/pyj/read_book/db.pyj b/src/pyj/read_book/db.pyj
index f13c0a13c0..1196f5a119 100644
--- a/src/pyj/read_book/db.pyj
+++ b/src/pyj/read_book/db.pyj
@@ -156,7 +156,10 @@ class DB:
             self.show_error(_('Database upgraded!'), _(
                 'A newer version of calibre is available, please click the Reload button in your browser.'))
         if window.navigator.storage?.persist:
-            window.navigator.storage.persist()
+            window.navigator.storage.persisted().then(def(already_persistent):
+                if not already_persistent:
+                    window.navigator.storage.persist()
+            )
         self.callback()
 
     def display_error(self, msg, event):