refactor: clean up tests/ root — delete junk, sort into subdirs

Deleted (7 files):
- test_discovery.py, test_windsurf_integration.py (trivial assert True stubs)
- pytest_simple.ini (unused --collect-only config)
- conftest_path.py (duplicate of conftest.py path setup)
- conftest_fixtures.py, conftest_full.py (unused conftest variants)

Moved to integration/ (6 files):
- test_blockchain_final.py, test_blockchain_nodes.py, test_blockchain_simple.py
- test_basic_integration.py, test_integration_simple.py, test_working_integration.py

Moved to fixtures/:
- mock_blockchain_node.py

tests/ root now has only conftest.py and README.md.

tests/integration/test_blockchain_final.py

@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+"""
+Final test and summary for blockchain nodes
+"""
+
+import httpx
+import json
+
+# Node URLs
+NODES = {
+    "node1": {"url": "http://127.0.0.1:8082", "name": "Node 1"},
+    "node2": {"url": "http://127.0.0.1:8081", "name": "Node 2"},
+}
+
+def test_nodes():
+    """Test both nodes"""
+    print("🔗 AITBC Blockchain Node Test Summary")
+    print("=" * 60)
+    
+    results = []
+    
+    for node_id, node in NODES.items():
+        print(f"\n{node['name']}:")
+        
+        # Test RPC API
+        try:
+            response = httpx.get(f"{node['url']}/openapi.json", timeout=5)
+            api_ok = response.status_code == 200
+            print(f"  RPC API: {'✅' if api_ok else '❌'}")
+        except:
+            api_ok = False
+            print(f"  RPC API: ❌")
+        
+        # Test chain head
+        try:
+            response = httpx.get(f"{node['url']}/rpc/head", timeout=5)
+            if response.status_code == 200:
+                head = response.json()
+                height = head.get('height', 0)
+                print(f"  Chain Height: {height}")
+                
+                # Test faucet
+                try:
+                    response = httpx.post(
+                        f"{node['url']}/rpc/admin/mintFaucet",
+                        json={"address": "aitbc1test000000000000000000000000000000000000", "amount": 100},
+                        timeout=5
+                    )
+                    faucet_ok = response.status_code == 200
+                    print(f"  Faucet: {'✅' if faucet_ok else '❌'}")
+                except:
+                    faucet_ok = False
+                    print(f"  Faucet: ❌")
+                
+                results.append({
+                    'node': node['name'],
+                    'api': api_ok,
+                    'height': height,
+                    'faucet': faucet_ok
+                })
+            else:
+                print(f"  Chain Head: ❌")
+        except:
+            print(f"  Chain Head: ❌")
+    
+    # Summary
+    print("\n\n📊 Test Results Summary")
+    print("=" * 60)
+    
+    for result in results:
+        status = "✅ OPERATIONAL" if result['api'] and result['faucet'] else "⚠️  PARTIAL"
+        print(f"{result['node']:.<20} {status}")
+        print(f"  - RPC API: {'✅' if result['api'] else '❌'}")
+        print(f"  - Height: {result['height']}")
+        print(f"  - Faucet: {'✅' if result['faucet'] else '❌'}")
+    
+    print("\n\n📝 Notes:")
+    print("- Both nodes are running independently")
+    print("- Each node maintains its own chain")
+    print("- Nodes are not connected (different heights)")
+    print("- To connect nodes in production:")
+    print("  1. Deploy on separate servers")
+    print("  2. Use Redis for gossip backend")
+    print("  3. Configure P2P peer discovery")
+    print("  4. Ensure network connectivity")
+    
+    print("\n✅ Test completed successfully!")
+
+if __name__ == "__main__":
+    test_nodes()