feat: add ops center and node onboarding flow

domain-api/app/services/ops_command_service.py

@@ -0,0 +1,17 @@
+from __future__ import annotations
+
+
+OPS_MULTI_REGION_DIR = "domain-api/deploy/multi-region"
+
+
+def ops_script_path(script_name: str) -> str:
+    normalized_script_name = str(script_name or "").strip().lstrip("/")
+    if not normalized_script_name:
+        return OPS_MULTI_REGION_DIR
+    return f"{OPS_MULTI_REGION_DIR}/{normalized_script_name}"
+
+
+def build_bash_command(script_name: str, *args: object) -> str:
+    command_parts = ["bash", ops_script_path(script_name)]
+    command_parts.extend(str(arg or "").strip() for arg in args if str(arg or "").strip())
+    return " ".join(command_parts)