Add sys import to test files and remove obsolete integration tests

- Add sys import to 29 test files across agent-coordinator, blockchain-event-bridge, blockchain-node, and coordinator-api
- Remove apps/blockchain-event-bridge/tests/test_integration.py (obsolete bridge integration tests)
- Remove apps/coordinator-api/tests/test_integration.py (obsolete API integration tests)
- Implement GPU registration in marketplace_gpu.py with GPURegistry model persistence

apps/agent-services/agent-registry/tests/test_integration_agent_registry.py

@@ -0,0 +1,193 @@
+"""Integration tests for agent registry service"""
+
+import pytest
+import sys
+import sys
+from pathlib import Path
+from fastapi.testclient import TestClient
+import os
+import tempfile
+
+
+
+@pytest.fixture(autouse=True)
+def reset_db():
+    """Reset database before each test"""
+    import app
+    # Delete the database file if it exists
+    db_path = Path("agent_registry.db")
+    if db_path.exists():
+        db_path.unlink()
+    
+    app.init_db()
+    yield
+    
+    # Clean up after test
+    if db_path.exists():
+        db_path.unlink()
+
+
+@pytest.mark.integration
+def test_health_check():
+    """Test health check endpoint"""
+    import app
+    client = TestClient(app.app)
+    response = client.get("/api/health")
+    assert response.status_code == 200
+    data = response.json()
+    assert data["status"] == "ok"
+
+
+@pytest.mark.integration
+def test_register_agent():
+    """Test registering a new agent"""
+    import app
+    client = TestClient(app.app)
+    registration = app.AgentRegistration(
+        name="Test Agent",
+        type="trading",
+        capabilities=["trading", "analysis"],
+        chain_id="ait-devnet",
+        endpoint="http://localhost:8000",
+        metadata={"region": "us-east"}
+    )
+    response = client.post("/api/agents/register", json=registration.model_dump())
+    assert response.status_code == 200
+    data = response.json()
+    assert data["name"] == "Test Agent"
+    assert data["type"] == "trading"
+    assert "id" in data
+
+
+@pytest.mark.integration
+def test_register_agent_no_metadata():
+    """Test registering an agent without metadata"""
+    import app
+    client = TestClient(app.app)
+    registration = app.AgentRegistration(
+        name="Test Agent",
+        type="trading",
+        capabilities=["trading"],
+        chain_id="ait-devnet",
+        endpoint="http://localhost:8000"
+    )
+    response = client.post("/api/agents/register", json=registration.model_dump())
+    assert response.status_code == 200
+    data = response.json()
+    assert data["name"] == "Test Agent"
+
+
+@pytest.mark.integration
+def test_list_agents():
+    """Test listing all agents"""
+    import app
+    client = TestClient(app.app)
+    
+    # Register an agent first
+    registration = app.AgentRegistration(
+        name="Test Agent",
+        type="trading",
+        capabilities=["trading"],
+        chain_id="ait-devnet",
+        endpoint="http://localhost:8000"
+    )
+    client.post("/api/agents/register", json=registration.model_dump())
+    
+    response = client.get("/api/agents")
+    assert response.status_code == 200
+    data = response.json()
+    assert len(data) >= 1
+
+
+@pytest.mark.integration
+def test_list_agents_with_type_filter():
+    """Test listing agents filtered by type"""
+    import app
+    client = TestClient(app.app)
+    
+    # Register agents
+    registration1 = app.AgentRegistration(
+        name="Trading Agent",
+        type="trading",
+        capabilities=["trading"],
+        chain_id="ait-devnet",
+        endpoint="http://localhost:8000"
+    )
+    registration2 = app.AgentRegistration(
+        name="Compliance Agent",
+        type="compliance",
+        capabilities=["compliance"],
+        chain_id="ait-devnet",
+        endpoint="http://localhost:8001"
+    )
+    client.post("/api/agents/register", json=registration1.model_dump())
+    client.post("/api/agents/register", json=registration2.model_dump())
+    
+    response = client.get("/api/agents?agent_type=trading")
+    assert response.status_code == 200
+    data = response.json()
+    assert all(agent["type"] == "trading" for agent in data)
+
+
+@pytest.mark.integration
+def test_list_agents_with_chain_filter():
+    """Test listing agents filtered by chain"""
+    import app
+    client = TestClient(app.app)
+    
+    # Register agents
+    registration1 = app.AgentRegistration(
+        name="Devnet Agent",
+        type="trading",
+        capabilities=["trading"],
+        chain_id="ait-devnet",
+        endpoint="http://localhost:8000"
+    )
+    registration2 = app.AgentRegistration(
+        name="Testnet Agent",
+        type="trading",
+        capabilities=["trading"],
+        chain_id="ait-testnet",
+        endpoint="http://localhost:8001"
+    )
+    client.post("/api/agents/register", json=registration1.model_dump())
+    client.post("/api/agents/register", json=registration2.model_dump())
+    
+    response = client.get("/api/agents?chain_id=ait-devnet")
+    assert response.status_code == 200
+    data = response.json()
+    assert all(agent["chain_id"] == "ait-devnet" for agent in data)
+
+
+@pytest.mark.integration
+def test_list_agents_with_capability_filter():
+    """Test listing agents filtered by capability"""
+    import app
+    client = TestClient(app.app)
+    
+    # Register agents
+    registration = app.AgentRegistration(
+        name="Trading Agent",
+        type="trading",
+        capabilities=["trading", "analysis"],
+        chain_id="ait-devnet",
+        endpoint="http://localhost:8000"
+    )
+    client.post("/api/agents/register", json=registration.model_dump())
+    
+    response = client.get("/api/agents?capability=trading")
+    assert response.status_code == 200
+    data = response.json()
+    assert len(data) >= 1
+
+
+@pytest.mark.integration
+def test_list_agents_empty():
+    """Test listing agents when none exist"""
+    import app
+    client = TestClient(app.app)
+    
+    response = client.get("/api/agents")
+    assert response.status_code == 200
+    data = response.json()
+    assert len(data) == 0