Add AI module with A2A wrapper and task agent

- Disable FuzzForge MCP connection (no Prefect backend)
- Add a2a_wrapper module for programmatic A2A agent tasks
- Add task_agent (LiteLLM A2A agent) on port 10900
- Create volumes/env/ for centralized Docker config
- Update docker-compose.yml with task-agent service
- Remove workflow_automation_skill from agent card

ai/agents/task_agent/main.py

@@ -0,0 +1,13 @@
+"""ASGI entrypoint for containerized deployments."""
+
+from pathlib import Path
+
+from google.adk.cli.fast_api import get_fast_api_app
+
+AGENT_DIR = Path(__file__).resolve().parent
+
+app = get_fast_api_app(
+    agents_dir=str(AGENT_DIR),
+    web=False,
+    a2a=True,
+)