feat: remove optional services step from setup wizard

Services are now installed post-setup from the Store page, so the
wizard step that let users pre-select email/calendar/files is removed.
Reduces wizard from 5 steps to 4 (Step4Services deleted, Step5Review
renamed to Step4Review). Backend drops services_enabled validation,
background install thread, and service_store_manager dependency.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

api/setup_manager.py

@@ -10,7 +10,6 @@ import fcntl
 import logging
 import os
 import re
-import threading
 from typing import Any, Dict, List
 
 logger = logging.getLogger(__name__)
@@ -95,10 +94,9 @@ def _build_ddns_config(domain_mode: str, cloudflare_api_token: str = '',
 class SetupManager:
     """Manages the first-run setup wizard state and completion."""
 
-    def __init__(self, config_manager, auth_manager, service_store_manager=None):
+    def __init__(self, config_manager, auth_manager):
         self.config_manager = config_manager
         self.auth_manager = auth_manager
-        self.service_store_manager = service_store_manager
 
     # ── state helpers ─────────────────────────────────────────────────────
 
@@ -174,7 +172,6 @@ class SetupManager:
         domain_mode = payload.get('domain_mode', '')
         domain_name = payload.get('domain_name', '')
         timezone = payload.get('timezone', '')
-        services_enabled = payload.get('services_enabled', [])
         ddns_provider = payload.get('ddns_provider', 'none')
         cloudflare_api_token = payload.get('cloudflare_api_token', '')
         duckdns_token = payload.get('duckdns_token', '')
@@ -188,8 +185,6 @@ class SetupManager:
             )
         if not timezone or not isinstance(timezone, str):
             errors.append('timezone is required.')
-        if not isinstance(services_enabled, list):
-            errors.append('services_enabled must be a list.')
 
         if errors:
             return {'success': False, 'errors': errors}
@@ -235,7 +230,6 @@ class SetupManager:
             if domain_name:
                 self.config_manager.set_identity_field('domain_name', domain_name)
             self.config_manager.set_identity_field('timezone', timezone)
-            self.config_manager.set_identity_field('services_enabled', services_enabled)
             self.config_manager.set_identity_field('ddns_provider', ddns_provider)
             if cloudflare_api_token:
                 self.config_manager.set_identity_field('cloudflare_api_token', cloudflare_api_token)
@@ -265,21 +259,6 @@ class SetupManager:
             # ── mark setup complete (must be last) ─────────────────────────
             self.config_manager.set_identity_field('setup_complete', True)
 
-            # Trigger service installs in background — non-blocking, failures are logged
-            if services_enabled and self.service_store_manager is not None:
-                def _install_services():
-                    for svc_id in services_enabled:
-                        try:
-                            result = self.service_store_manager.install(svc_id)
-                            if result.get('ok'):
-                                logger.info('Wizard: installed service %r', svc_id)
-                            else:
-                                logger.warning('Wizard: install %r failed: %s',
-                                               svc_id, result.get('error') or result.get('errors'))
-                        except Exception as exc:
-                            logger.warning('Wizard: install %r raised: %s', svc_id, exc)
-                threading.Thread(target=_install_services, daemon=True).start()
-
             logger.info(f"Setup completed. cell_name={cell_name!r}, domain_mode={domain_mode!r}")
             return {'success': True, 'redirect': '/login'}