fix: skip NC/OO/quota steps for manager tenant in scheduler

Manager tenant (is_manager=True) only needs Traefik route + SSO + Mailbox.
NC and OO containers should not be created for the manager tenant.

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

backend/app/services/scheduler/schedule_tenant.py

@@ -929,6 +929,13 @@ def run_tenant_check(schedule_log_id: int, db: Session):
 
         # ── [4] NC container + DB 驗證 + OIDC 設定 ─────────────────────────
         pg_db = f"nc_{tenant.code}_db"
+        if tenant.is_manager:
+            # Manager 租戶無需 NC/OO 容器，直接標記成功
+            result.nc_result = True
+            result.nc_done_at = now_tw()
+            result.office_result = True
+            result.office_done_at = now_tw()
+        else:
             try:
                 nc_state = docker.check_container_ssh(nc_name)
                 if nc_state is None:
@@ -1002,6 +1009,7 @@ def run_tenant_check(schedule_log_id: int, db: Session):
                 fail_reasons.append(f"oo: {e}")
 
         # ── [6] Quota (OO disk + PG DB size) ────────────────────────────────
+        if not tenant.is_manager:
             try:
                 oo_gb = docker.get_oo_disk_usage_gb(oo_name) or 0.0
                 pg_gb = _get_pg_db_size_gb(pg_host, pg_db, pg_port) or 0.0