Fixed missing translation in Sources

lang/en.json

@@ -598,12 +598,15 @@
   "m365_file_sources_empty": "No file sources configured. Add a local folder or network share below.",
   "m365_file_sources_add": "Add source",
   "m365_fsrc_label": "Label",
+  "m365_fsrc_name": "Name",
+  "m365_fsrc_sftp_auth": "Auth",
   "m365_fsrc_path": "Path",
   "m365_fsrc_smb_detected": "SMB/CIFS network share detected",
   "m365_fsrc_smb_host": "SMB host",
   "m365_fsrc_smb_user": "Username",
   "m365_fsrc_smb_pw": "Password",
   "m365_fsrc_smb_pw_hint": "Password is saved to the OS keychain — never stored in a file.",
+  "m365_fsrc_pw_keychain_placeholder": "Stored in OS keychain",
   "m365_fsrc_add_btn": "Add",
   "m365_fsrc_saved": "Source saved",
   "m365_fsrc_saving": "Saving...",
@@ -625,6 +628,15 @@
   "m365_fsrc_sftp_passphrase": "Passphrase (if key is encrypted)",
   "m365_fsrc_sftp_passphrase_hint": "Passphrase is saved to the OS keychain — never stored in a file.",
   "m365_fsrc_sftp_not_installed": "paramiko not installed — run: pip install paramiko",
+  "m365_fsrc_name_placeholder": "e.g. Teacher files, NAS archive",
+  "m365_fsrc_path_placeholder": "~/Documents  or  //nas/shares",
+  "m365_fsrc_smb_host_placeholder": "nas.school.dk",
+  "m365_fsrc_smb_user_placeholder": "DOMAIN\\username",
+  "m365_fsrc_smb_user_edit_placeholder": "DOMAIN\\username or username",
+  "m365_fsrc_sftp_host_placeholder": "sftp.school.dk",
+  "m365_fsrc_sftp_user_placeholder": "backup_user",
+  "m365_fsrc_sftp_path_placeholder": "/var/data",
+  "m365_fsrc_sftp_passphrase_placeholder": "Leave blank if key has no passphrase",
   "m365_fsrc_sftp_host_required": "SFTP host is required.",
   "m365_fsrc_sftp_user_required": "SFTP username is required.",
   "m365_fsrc_scan_btn": "Scan",