Keep profile photos and fields in line with Microsoft 365 on every run

- Photo versions are compared on every sync run via Graph $batch
  (20 users per request); only changed photos are downloaded, the old
  file is deleted and the avatar URL changes. Photos deleted in
  Microsoft 365 are deleted in WordPress. Graph errors never delete a
  photo. Download limit per run (500) with deferral to the next run.
- Switching the photo sync off removes all stored photos; deselected
  m365_* profile fields are removed from the profiles.
- A user's photo is deleted together with the user (delete_user hook).
- Dry run reports photo changes without downloading.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

languages/m365-login-de_DE_formal.po

@@ -124,7 +124,7 @@ msgstr "Sie haben ungespeicherte Änderungen. Der Sync verwendet die gespeichert
 msgid "Move up"
 msgstr "Nach oben"
 
-#: includes/class-m365-login-admin.php:261 includes/class-m365-login-admin.php:300 includes/class-m365-login-admin.php:326 includes/class-m365-login-admin.php:359 includes/class-m365-login-admin.php:514 includes/class-m365-login-sync.php:1495
+#: includes/class-m365-login-admin.php:261 includes/class-m365-login-admin.php:300 includes/class-m365-login-admin.php:326 includes/class-m365-login-admin.php:359 includes/class-m365-login-admin.php:514 includes/class-m365-login-sync.php:1611
 msgid "You are not allowed to do this."
 msgstr "Dafür fehlt die Berechtigung."
 
@@ -428,8 +428,8 @@ msgid "Selected Microsoft 365 attributes are copied into the WordPress profile o
 msgstr "Ausgewählte Microsoft-365-Attribute werden bei jedem Sync ins WordPress-Profil übernommen (Microsoft 365 hat Vorrang). Namen landen in den normalen Profilfeldern, alles andere in Benutzer-Metadaten mit dem Präfix „m365_“ – nutzbar für Themes und andere Plugins – und wird auf der Profilseite angezeigt."
 
 #: includes/class-m365-login-admin.php:643
-msgid "Profile photos are stored in wp-content/uploads/m365-login-avatars/ and replace the Gravatar. They are checked about once a day per user."
-msgstr "Profilbilder werden in wp-content/uploads/m365-login-avatars/ gespeichert und ersetzen den Gravatar. Sie werden etwa einmal täglich pro Benutzer geprüft."
+msgid "Profile photos are stored in wp-content/uploads/m365-login-avatars/ and replace the Gravatar. They are compared on every run: changed photos are downloaded again, photos deleted in Microsoft 365 are deleted in WordPress too. Fields and photos you deselect here are removed from the profiles on the next run (first and last name and display name stay)."
+msgstr "Profilbilder werden in wp-content/uploads/m365-login-avatars/ gespeichert und ersetzen den Gravatar. Sie werden bei jedem Lauf abgeglichen: Geänderte Bilder werden neu geladen, in Microsoft 365 gelöschte Bilder auch in WordPress gelöscht. Felder und Bilder, die Sie hier abwählen, werden beim nächsten Lauf aus den Profilen entfernt (Vor-, Nach- und Anzeigename bleiben)."
 
 #: includes/class-m365-login-admin.php:647
 msgid "Disabled and deleted Microsoft 365 accounts"
@@ -1119,7 +1119,7 @@ msgstr "Zu viele Versuche. Bitte 15 Minuten warten."
 msgid "Too many sign-in attempts from your connection. Please wait a few minutes and try again."
 msgstr "Zu viele Anmeldeversuche von dieser Verbindung. Bitte ein paar Minuten warten und erneut versuchen."
 
-#: includes/class-m365-login-auth.php:864 includes/class-m365-login-sync.php:1404
+#: includes/class-m365-login-auth.php:864 includes/class-m365-login-sync.php:1520
 msgid "This account has been deactivated."
 msgstr "Dieses Konto wurde deaktiviert."
 
@@ -1175,15 +1175,15 @@ msgstr "Das Zertifikat gehört nicht zu diesem privaten Schlüssel."
 msgid "The certificate has already expired."
 msgstr "Das Zertifikat ist bereits abgelaufen."
 
-#: includes/class-m365-login-graph.php:375
+#: includes/class-m365-login-graph.php:434
 msgid "Group"
 msgstr "Gruppe"
 
-#: includes/class-m365-login-graph.php:377
+#: includes/class-m365-login-graph.php:436
 msgid "Security group"
 msgstr "Sicherheitsgruppe"
 
-#: includes/class-m365-login-graph.php:379
+#: includes/class-m365-login-graph.php:438
 msgid "Microsoft 365 group"
 msgstr "Microsoft 365-Gruppe"
 
@@ -1235,293 +1235,312 @@ msgstr "Die eigene Login-Seite muss eine URL dieser Website sein."
 msgid "User sync: \"Delete\" needs a user who receives the posts of deleted accounts. Until one is selected, accounts are deactivated instead."
 msgstr "Benutzer-Sync: „Löschen“ braucht einen Benutzer, der die Beiträge gelöschter Konten übernimmt. Bis einer ausgewählt ist, werden Konten stattdessen deaktiviert."
 
-#: includes/class-m365-login-sync.php:109
+#: includes/class-m365-login-sync.php:110
 msgid "Display name"
 msgstr "Anzeigename"
 
-#: includes/class-m365-login-sync.php:113
+#: includes/class-m365-login-sync.php:114
 msgid "First name"
 msgstr "Vorname"
 
-#: includes/class-m365-login-sync.php:117
+#: includes/class-m365-login-sync.php:118
 msgid "Last name"
 msgstr "Nachname"
 
-#: includes/class-m365-login-sync.php:121
+#: includes/class-m365-login-sync.php:122
 msgid "Profile photo (used as avatar)"
 msgstr "Profilbild (als Avatar)"
 
-#: includes/class-m365-login-sync.php:125
+#: includes/class-m365-login-sync.php:126
 msgid "Job title"
 msgstr "Position"
 
-#: includes/class-m365-login-sync.php:129
+#: includes/class-m365-login-sync.php:130
 msgid "Department"
 msgstr "Abteilung"
 
-#: includes/class-m365-login-sync.php:133
+#: includes/class-m365-login-sync.php:134
 msgid "Company"
 msgstr "Firma"
 
-#: includes/class-m365-login-sync.php:137
+#: includes/class-m365-login-sync.php:138
 msgid "Office"
 msgstr "Büro"
 
-#: includes/class-m365-login-sync.php:141
+#: includes/class-m365-login-sync.php:142
 msgid "Employee ID"
 msgstr "Personalnummer"
 
-#: includes/class-m365-login-sync.php:145
+#: includes/class-m365-login-sync.php:146
 msgid "Business phone"
 msgstr "Telefon (geschäftlich)"
 
-#: includes/class-m365-login-sync.php:149
+#: includes/class-m365-login-sync.php:150
 msgid "Mobile phone"
 msgstr "Mobiltelefon"
 
-#: includes/class-m365-login-sync.php:153
+#: includes/class-m365-login-sync.php:154
 msgid "Street address"
 msgstr "Straße"
 
-#: includes/class-m365-login-sync.php:157
+#: includes/class-m365-login-sync.php:158
 msgid "Postal code"
 msgstr "Postleitzahl"
 
-#: includes/class-m365-login-sync.php:161
+#: includes/class-m365-login-sync.php:162
 msgid "City"
 msgstr "Ort"
 
-#: includes/class-m365-login-sync.php:165
+#: includes/class-m365-login-sync.php:166
 msgid "State / province"
 msgstr "Bundesland / Region"
 
-#: includes/class-m365-login-sync.php:169
+#: includes/class-m365-login-sync.php:170
 msgid "Country"
 msgstr "Land"
 
-#: includes/class-m365-login-sync.php:173
+#: includes/class-m365-login-sync.php:174
 msgid "Language (sets the admin language if installed)"
 msgstr "Sprache (setzt die Backend-Sprache, falls installiert)"
 
-#: includes/class-m365-login-sync.php:308
+#: includes/class-m365-login-sync.php:309
 msgid "Another sync is still running. Please try again in a few minutes."
 msgstr "Ein anderer Sync läuft noch. Bitte versuchen Sie es in ein paar Minuten erneut."
 
-#: includes/class-m365-login-sync.php:365
+#: includes/class-m365-login-sync.php:366
 msgid "The connection to Microsoft Entra ID is not configured yet."
 msgstr "Die Verbindung zu Microsoft Entra ID ist noch nicht eingerichtet."
 
-#: includes/class-m365-login-sync.php:369
+#: includes/class-m365-login-sync.php:370
 msgid "The user sync needs a pinned tenant ID (GUID) on the Connection tab."
 msgstr "Der Benutzer-Sync braucht eine feste Tenant-ID (GUID) im Tab „Verbindung“."
 
-#: includes/class-m365-login-sync.php:373
+#: includes/class-m365-login-sync.php:374
 msgid "The default role does not exist. Please check the sync settings."
 msgstr "Die Standardrolle existiert nicht. Bitte prüfen Sie die Sync-Einstellungen."
 
 #. translators: %d: number of users
-#: includes/class-m365-login-sync.php:385
+#: includes/class-m365-login-sync.php:386
 msgid "%d user read from Microsoft 365."
 msgid_plural "%d users read from Microsoft 365."
 msgstr[0] "%d Benutzer aus Microsoft 365 gelesen."
 msgstr[1] "%d Benutzer aus Microsoft 365 gelesen."
 
 #. translators: 1: number of accounts, 2: limit
-#: includes/class-m365-login-sync.php:435
+#: includes/class-m365-login-sync.php:443
 msgid "Safety stop: %1$d accounts would be deactivated or deleted, more than the limit of %2$d per run. No account was deactivated or deleted. Check the sync groups and the tenant, then run the sync again (the limit can be changed with the m365_login_sync_deprovision_limit filter)."
 msgstr "Sicherheitsstopp: %1$d Konten würden deaktiviert oder gelöscht, mehr als das Limit von %2$d pro Lauf. Es wurde kein Konto deaktiviert oder gelöscht. Prüfen Sie die Sync-Gruppen und den Tenant und starten Sie den Sync dann erneut (das Limit lässt sich mit dem Filter m365_login_sync_deprovision_limit ändern)."
 
 #. translators: %s: user principal name
-#: includes/class-m365-login-sync.php:559
+#: includes/class-m365-login-sync.php:567
 msgid "%s: no usable e-mail address, skipped."
 msgstr "%s: keine verwendbare E-Mail-Adresse, übersprungen."
 
 #. translators: %s: e-mail address
-#: includes/class-m365-login-sync.php:566
+#: includes/class-m365-login-sync.php:574
 msgid "%s: e-mail domain is not on the allow-list, skipped."
 msgstr "%s: E-Mail-Domain steht nicht auf der Liste erlaubter Domains, übersprungen."
 
 #. translators: %s: e-mail address
-#: includes/class-m365-login-sync.php:578
+#: includes/class-m365-login-sync.php:586
 msgid "%s: the WordPress account with this e-mail address is linked to a different Microsoft account, skipped."
 msgstr "%s: Das WordPress-Konto mit dieser E-Mail-Adresse ist mit einem anderen Microsoft-Konto verknüpft, übersprungen."
 
 #. translators: %s: e-mail address
-#: includes/class-m365-login-sync.php:582
+#: includes/class-m365-login-sync.php:590
 msgid "%s: existing account linked."
 msgstr "%s: bestehendes Konto verknüpft."
 
-#: includes/class-m365-login-sync.php:596 includes/class-m365-login-sync.php:931 includes/class-m365-login-sync.php:1536
+#: includes/class-m365-login-sync.php:604 includes/class-m365-login-sync.php:955 includes/class-m365-login-sync.php:1652
 msgid "disabled in Microsoft 365"
 msgstr "in Microsoft 365 deaktiviert"
 
 #. translators: %s: e-mail address
-#: includes/class-m365-login-sync.php:607
+#: includes/class-m365-login-sync.php:615
 msgid "%s: added to this site."
 msgstr "%s: zu dieser Website hinzugefügt."
 
 #. translators: %s: e-mail address
-#: includes/class-m365-login-sync.php:616
+#: includes/class-m365-login-sync.php:624
 msgid "%s: reactivated (active in Microsoft 365 again)."
 msgstr "%s: reaktiviert (in Microsoft 365 wieder aktiv)."
 
 #. translators: 1: e-mail address, 2: list of changed fields
-#: includes/class-m365-login-sync.php:627
+#: includes/class-m365-login-sync.php:635
 msgid "%1$s: updated (%2$s)."
 msgstr "%1$s: aktualisiert (%2$s)."
 
 #. translators: 1: e-mail address, 2: role names
-#: includes/class-m365-login-sync.php:653
+#: includes/class-m365-login-sync.php:661
 msgid "%1$s: account created (%2$s)."
 msgstr "%1$s: Konto angelegt (%2$s)."
 
 #. translators: 1: e-mail address, 2: error message
-#: includes/class-m365-login-sync.php:680
+#: includes/class-m365-login-sync.php:688
 msgid "%1$s: account could not be created: %2$s"
 msgstr "%1$s: Konto konnte nicht angelegt werden: %2$s"
 
 #. translators: %s: e-mail address
-#: includes/class-m365-login-sync.php:738
+#: includes/class-m365-login-sync.php:746
 msgid "%s: e-mail address is used by another WordPress account and was not changed."
 msgstr "%s: Die E-Mail-Adresse gehört bereits einem anderen WordPress-Konto und wurde nicht geändert."
 
 #. translators: %s: e-mail address
-#: includes/class-m365-login-sync.php:741
+#: includes/class-m365-login-sync.php:749
 msgid "e-mail"
 msgstr "E-Mail"
 
+#. translators: %s: profile field
+#: includes/class-m365-login-sync.php:799
+msgid "%s removed"
+msgstr "%s entfernt"
+
 #. translators: 1: e-mail address, 2: error message
-#: includes/class-m365-login-sync.php:785
+#: includes/class-m365-login-sync.php:809
 msgid "%1$s: profile could not be updated: %2$s"
 msgstr "%1$s: Profil konnte nicht aktualisiert werden: %2$s"
 
 #. translators: %s: role names
-#: includes/class-m365-login-sync.php:891
+#: includes/class-m365-login-sync.php:915
 msgid "roles: %s"
 msgstr "Rollen: %s"
 
-#: includes/class-m365-login-sync.php:926 includes/class-m365-login-sync.php:1537
+#: includes/class-m365-login-sync.php:950 includes/class-m365-login-sync.php:1653
 msgid "deleted in Microsoft 365"
 msgstr "in Microsoft 365 gelöscht"
 
-#: includes/class-m365-login-sync.php:934 includes/class-m365-login-sync.php:1538
+#: includes/class-m365-login-sync.php:958 includes/class-m365-login-sync.php:1654
 msgid "no longer a member of the sync groups"
 msgstr "kein Mitglied der Sync-Gruppen mehr"
 
 #. translators: 1: e-mail address, 2: reason
-#: includes/class-m365-login-sync.php:954
+#: includes/class-m365-login-sync.php:978
 msgid "%1$s: %2$s, but the account is protected (administrator or your own account) and was not changed."
 msgstr "%1$s: %2$s, das Konto ist aber geschützt (Administrator oder Ihr eigenes Konto) und wurde nicht geändert."
 
 #. translators: %s: e-mail address
-#: includes/class-m365-login-sync.php:987
+#: includes/class-m365-login-sync.php:1011
 msgid "%s: no valid user to receive the content is selected, so the account is deactivated instead of deleted."
 msgstr "%s: Es ist kein gültiger Benutzer für die Übernahme der Inhalte ausgewählt, deshalb wird das Konto deaktiviert statt gelöscht."
 
 #. translators: 1: e-mail address, 2: reason
-#: includes/class-m365-login-sync.php:996
+#: includes/class-m365-login-sync.php:1020
 msgid "%1$s: account deleted (%2$s)."
 msgstr "%1$s: Konto gelöscht (%2$s)."
 
 #. translators: 1: e-mail address, 2: reason
-#: includes/class-m365-login-sync.php:1006
+#: includes/class-m365-login-sync.php:1029
 msgid "%1$s: account deactivated (%2$s)."
 msgstr "%1$s: Konto deaktiviert (%2$s)."
 
-#: includes/class-m365-login-sync.php:1085
+#: includes/class-m365-login-sync.php:1108
 msgid "Microsoft Graph refused the request. Grant the application permissions \"User.Read.All\" and \"GroupMember.Read.All\" with admin consent in Entra ID."
 msgstr "Microsoft Graph hat die Anfrage abgelehnt. Erteilen Sie in Entra ID die Anwendungsberechtigungen „User.Read.All“ und „GroupMember.Read.All“ mit Administratorzustimmung."
 
 #. translators: %s: error message
-#: includes/class-m365-login-sync.php:1088
+#: includes/class-m365-login-sync.php:1111
 msgid "Microsoft Graph error: %s"
 msgstr "Microsoft-Graph-Fehler: %s"
 
-#: includes/class-m365-login-sync.php:1106
+#: includes/class-m365-login-sync.php:1129
 msgid "Log truncated."
 msgstr "Protokoll gekürzt."
 
 #. translators: 1: e-mail address, 2: error message
-#: includes/class-m365-login-sync.php:1168
+#: includes/class-m365-login-sync.php:1205
 msgid "%1$s: profile photo could not be read: %2$s"
 msgstr "%1$s: Profilbild konnte nicht gelesen werden: %2$s"
 
 #. translators: %s: e-mail address
-#: includes/class-m365-login-sync.php:1176
-msgid "%s: profile photo removed."
-msgstr "%s: Profilbild entfernt."
+#: includes/class-m365-login-sync.php:1229 includes/class-m365-login-sync.php:1272
+msgid "%s: profile photo updated."
+msgstr "%s: Profilbild aktualisiert."
 
 #. translators: %s: e-mail address
-#: includes/class-m365-login-sync.php:1192
+#: includes/class-m365-login-sync.php:1248
 msgid "%s: profile photo could not be downloaded."
 msgstr "%s: Profilbild konnte nicht heruntergeladen werden."
 
 #. translators: %s: e-mail address
-#: includes/class-m365-login-sync.php:1199
+#: includes/class-m365-login-sync.php:1255
 msgid "%s: profile photo is not a valid image or could not be saved."
 msgstr "%s: Profilbild ist kein gültiges Bild oder konnte nicht gespeichert werden."
 
-#. translators: %s: e-mail address
-#: includes/class-m365-login-sync.php:1216
-msgid "%s: profile photo updated."
-msgstr "%s: Profilbild aktualisiert."
+#. translators: %d: number of photos
+#: includes/class-m365-login-sync.php:1278
+msgid "%d changed profile photo will be downloaded in the next run (download limit per run reached)."
+msgid_plural "%d changed profile photos will be downloaded in the next run (download limit per run reached)."
+msgstr[0] "%d geändertes Profilbild wird im nächsten Lauf heruntergeladen (Download-Limit pro Lauf erreicht)."
+msgstr[1] "%d geänderte Profilbilder werden im nächsten Lauf heruntergeladen (Download-Limit pro Lauf erreicht)."
 
-#: includes/class-m365-login-sync.php:1433 includes/class-m365-login-sync.php:1566
+#. translators: %s: e-mail address
+#: includes/class-m365-login-sync.php:1293
+msgid "%s: profile photo removed."
+msgstr "%s: Profilbild entfernt."
+
+#. translators: %d: number of photos
+#: includes/class-m365-login-sync.php:1321
+msgid "Profile photo sync is off: %d stored photo removed."
+msgid_plural "Profile photo sync is off: %d stored photos removed."
+msgstr[0] "Profilbild-Sync ist aus: %d gespeichertes Profilbild entfernt."
+msgstr[1] "Profilbild-Sync ist aus: %d gespeicherte Profilbilder entfernt."
+
+#: includes/class-m365-login-sync.php:1549 includes/class-m365-login-sync.php:1682
 msgid "Microsoft 365"
 msgstr "Microsoft 365"
 
-#: includes/class-m365-login-sync.php:1451
+#: includes/class-m365-login-sync.php:1567
 msgid "Deactivated"
 msgstr "Deaktiviert"
 
-#: includes/class-m365-login-sync.php:1454
+#: includes/class-m365-login-sync.php:1570
 msgid "Imported"
 msgstr "Importiert"
 
-#: includes/class-m365-login-sync.php:1456
+#: includes/class-m365-login-sync.php:1572
 msgid "Linked"
 msgstr "Verknüpft"
 
-#: includes/class-m365-login-sync.php:1484
+#: includes/class-m365-login-sync.php:1600
 msgid "Reactivate"
 msgstr "Reaktivieren"
 
-#: includes/class-m365-login-sync.php:1484
+#: includes/class-m365-login-sync.php:1600
 msgid "Deactivate"
 msgstr "Deaktivieren"
 
-#: includes/class-m365-login-sync.php:1517
+#: includes/class-m365-login-sync.php:1633
 msgid "The account has been deactivated and signed out everywhere."
 msgstr "Das Konto wurde deaktiviert und überall abgemeldet."
 
-#: includes/class-m365-login-sync.php:1518
+#: includes/class-m365-login-sync.php:1634
 msgid "The account has been reactivated."
 msgstr "Das Konto wurde reaktiviert."
 
 #. translators: 1: date, 2: reason
-#: includes/class-m365-login-sync.php:1542
+#: includes/class-m365-login-sync.php:1658
 msgid "Deactivated since %1$s (%2$s)"
 msgstr "Deaktiviert seit %1$s (%2$s)"
 
 #. translators: 1: date, 2: reason
-#: includes/class-m365-login-sync.php:1544
+#: includes/class-m365-login-sync.php:1660
 msgid "manually"
 msgstr "manuell"
 
 #. translators: 1: date, 2: reason
-#: includes/class-m365-login-sync.php:1546
+#: includes/class-m365-login-sync.php:1662
 msgid "Status"
 msgstr "Status"
 
-#: includes/class-m365-login-sync.php:1549
+#: includes/class-m365-login-sync.php:1665
 msgid "Object ID"
 msgstr "Objekt-ID"
 
-#: includes/class-m365-login-sync.php:1553
+#: includes/class-m365-login-sync.php:1669
 msgid "Last sync"
 msgstr "Letzter Sync"
 
-#: includes/class-m365-login-sync.php:1575
+#: includes/class-m365-login-sync.php:1691
 msgid "These values are managed by the Microsoft 365 user sync and overwritten on the next run."
 msgstr "Diese Werte verwaltet der Microsoft-365-Benutzer-Sync; sie werden beim nächsten Lauf überschrieben."