v1.8.1: Alignement upload offline sur le flow online (UX + self-heal)

L'upload offline avait deux defauts vs l'update online:
- pas de self-heal des services (pas de Step 3c equivalent)
- ancienne UX synchrone (spinner sans feedback pendant 60-90s)

Maintenant:
- update_firmware_from_file.sh: nouveau Step 4c qui appelle
  setup_services.sh (alignement avec online)
- launcher.php upload_firmware: lance le script en background et
  reutilise le mecanisme log/done de l'update online
- admin.html uploadFirmware: apres l'upload du ZIP, bascule sur
  le meme systeme de polling/progress que l'online (avec mapping
  d'etapes specifique au script offline)
- Detection de fin par substring 'completed successfully!' (matche
  les 2 markers finaux differents)

Fix au passage: le bouton 'Upload & Install' restait bloque sur
'Installing...' apres succes.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

update_firmware_from_file.sh

@@ -144,6 +144,21 @@ if [ "${APACHE_CHANGED:-false}" = true ]; then
     print_status "✓ Apache reloaded"
 fi
 
+# Step 4c: Reconcile systemd services with the repo (self-heal)
+# Same logic as update_firmware.sh: re-run setup_services.sh so any missing,
+# masked, or newly-added service in the canonical setup script is installed.
+# git config core.fileMode=false strips +x, so chmod first.
+print_status ""
+print_status "Step 4c: Reconciling systemd services with setup_services.sh..."
+SETUP_SERVICES="$TARGET_DIR/services/setup_services.sh"
+if [ -f "$SETUP_SERVICES" ]; then
+    chmod +x "$SETUP_SERVICES"
+    "$SETUP_SERVICES"
+    check_status "Setup services reconciliation"
+else
+    print_status "⚠ setup_services.sh not found, skipping"
+fi
+
 # Step 5: Restart critical services
 print_status ""
 print_status "Step 5: Managing system services..."