fix: try to fix error on update on computer switch off

lib/ui.py

@@ -59,6 +59,13 @@ class UpdaterWindow(Adw.ApplicationWindow):
         self.pending_group.set_description(
             "Ces paquets seront installés automatiquement à la prochaine extinction du PC"
         )
+
+        self.install_now_btn = Gtk.Button.new_with_label("Installer maintenant")
+        self.install_now_btn.add_css_class("suggested-action")
+        self.install_now_btn.add_css_class("pill")
+        self.install_now_btn.connect("clicked", self._on_install_pending_clicked)
+        self.pending_group.set_header_suffix(self.install_now_btn)
+
         main_box.append(self.pending_group)
 
         # Groupe "Récemment installées"
@@ -233,6 +240,10 @@ class UpdaterWindow(Adw.ApplicationWindow):
                         pass
                 self.status_sub_lbl.set_text(sub)
 
+        # ── Bouton "Installer maintenant" ────────────────────────────────
+        can_install = status in ("idle", "error") and bool(pending)
+        self.install_now_btn.set_sensitive(can_install)
+
         # ── Liste des paquets en attente de redémarrage ──────────────────
         for row in self._pending_rows:
             self.pending_group.remove(row)
@@ -306,6 +317,31 @@ class UpdaterWindow(Adw.ApplicationWindow):
         self.refresh_btn.set_sensitive(False)
         threading.Thread(target=self._send_check_now, daemon=True).start()
 
+    def _on_install_pending_clicked(self, _btn):
+        self.install_now_btn.set_sensitive(False)
+        threading.Thread(target=self._send_install_pending, daemon=True).start()
+
+    def _send_install_pending(self):
+        try:
+            s = sock_module.socket(sock_module.AF_UNIX, sock_module.SOCK_STREAM)
+            s.settimeout(5)
+            s.connect(str(SOCKET_PATH))
+            s.sendall(json.dumps({"action": "install_pending"}).encode())
+            s.recv(1024)
+            s.close()
+        except PermissionError:
+            GLib.idle_add(
+                self._show_toast,
+                "Permission refusée — êtes-vous dans le groupe wheel ?",
+            )
+            GLib.idle_add(self.install_now_btn.set_sensitive, True)
+        except Exception as e:
+            GLib.idle_add(
+                self._show_toast,
+                f"Impossible de contacter le service : {e}",
+            )
+            GLib.idle_add(self.install_now_btn.set_sensitive, True)
+
     def _send_check_now(self):
         try:
             s = sock_module.socket(sock_module.AF_UNIX, sock_module.SOCK_STREAM)