chore: remove configuration files and enhance blockchain explorer with advanced search, analytics, and export features

- Delete .aitbc.yaml.example CLI configuration template
- Delete .lycheeignore link checker exclusion rules
- Delete .nvmrc Node.js version specification
- Add advanced search panel with filters for address, amount range, transaction type, time range, and validator
- Add analytics dashboard with transaction volume, active addresses, and block time metrics
- Add Chart.js integration

tests/conftest.py

@@ -1,5 +1,5 @@
 """
-Minimal conftest for pytest discovery without complex imports
+Enhanced conftest for pytest with AITBC CLI support
 """
 
 import pytest
@@ -7,11 +7,15 @@ import sys
 import os
 from pathlib import Path
 from unittest.mock import Mock
+from click.testing import CliRunner
 
 # Configure Python path for test discovery
 project_root = Path(__file__).parent.parent
 sys.path.insert(0, str(project_root))
 
+# Add CLI path
+sys.path.insert(0, str(project_root / "cli"))
+
 # Add necessary source paths
 sys.path.insert(0, str(project_root / "packages" / "py" / "aitbc-core" / "src"))
 sys.path.insert(0, str(project_root / "packages" / "py" / "aitbc-crypto" / "src"))
@@ -46,6 +50,37 @@ sys.modules['aitbc_crypto'].decrypt_data = mock_decrypt_data
 sys.modules['aitbc_crypto'].generate_viewing_key = mock_generate_viewing_key
 
 
+@pytest.fixture
+def aitbc_cli_runner():
+    """Create AITBC CLI runner with test configuration"""
+    from aitbc_cli.main import cli
+    
+    runner = CliRunner()
+    
+    # Default test configuration
+    default_config = {
+        'coordinator_url': 'http://test:8000',
+        'api_key': 'test_api_key',
+        'output_format': 'json',
+        'log_level': 'INFO'
+    }
+    
+    return runner, default_config
+
+
+@pytest.fixture
+def mock_aitbc_config():
+    """Mock AITBC configuration for testing"""
+    config = Mock()
+    config.coordinator_url = "http://test:8000"
+    config.api_key = "test_api_key"
+    config.wallet_path = "/tmp/test_wallet.json"
+    config.default_chain = "testnet"
+    config.timeout = 30
+    config.retry_attempts = 3
+    return config
+
+
 @pytest.fixture
 def coordinator_client():
     """Create a test client for coordinator API"""