refactored: to utilise the google adk and production grade agent

app/adk/workflows.py

@@ -0,0 +1,20 @@
+"""ADK Workflows module for GCP Solution Architecture Agent.
+
+Uses google.adk.workflows.Workflow and google.adk.workflows.WorkflowStep primitives.
+"""
+
+from typing import Any, Dict, List
+from app.adk.agents import OrchestratorLoopAgent
+from app.adk.compat import Workflow, WorkflowStep
+from app.skills.loader import SkillLoader
+
+
+def create_gcp_adk_workflow(skill_loader: SkillLoader, max_iterations: int = 5) -> Workflow:
+    """Compose the multi-agent ADK workflow."""
+    orchestrator = OrchestratorLoopAgent(skill_loader, max_iterations=max_iterations)
+    step = WorkflowStep(step_name="OrchestratorReviewLoopStep", agent=orchestrator)
+
+    return Workflow(
+        name="GCP_Solution_Architecture_Workflow",
+        steps=[step],
+    )