fix: remove /v1 prefix from agent API endpoints and resolve variable naming conflicts

- Update all agent command endpoints to remove /v1 prefix for API consistency
- Rename `success` variable to `is_success` in chain.py to avoid conflict with success() function
- Rename `output` parameter to `output_file` in genesis.py for clarity
- Add admin command help tests to verify command structure
- Update blockchain status endpoint from /status to /v1/health in tests
- Mark admin help command as working

tests/cli/test_chain.py

@@ -0,0 +1,77 @@
+"""Tests for multi-chain management CLI commands"""
+
+import pytest
+from click.testing import CliRunner
+from unittest.mock import Mock, patch
+from aitbc_cli.commands.chain import chain
+
+@pytest.fixture
+def runner():
+    """Create CLI runner"""
+    return CliRunner()
+
+@pytest.fixture
+def mock_chain_manager():
+    """Mock ChainManager"""
+    with patch('aitbc_cli.commands.chain.ChainManager') as mock:
+        yield mock.return_value
+
+@pytest.fixture
+def mock_config():
+    """Mock configuration loader"""
+    with patch('aitbc_cli.commands.chain.load_multichain_config') as mock:
+        yield mock
+
+class TestChainAddCommand:
+    """Test chain add command"""
+    
+    def test_add_chain_success(self, runner, mock_config, mock_chain_manager):
+        """Test successful addition of a chain to a node"""
+        # Setup mock
+        mock_chain_manager.add_chain_to_node.return_value = True
+        
+        # Run command
+        result = runner.invoke(chain, ['add', 'chain-123', 'node-456'])
+        
+        # Assertions
+        assert result.exit_code == 0
+        assert "added to node" in result.output
+        mock_chain_manager.add_chain_to_node.assert_called_once_with('chain-123', 'node-456')
+
+    def test_add_chain_failure(self, runner, mock_config, mock_chain_manager):
+        """Test failure when adding a chain to a node"""
+        # Setup mock
+        mock_chain_manager.add_chain_to_node.return_value = False
+        
+        # Run command
+        result = runner.invoke(chain, ['add', 'chain-123', 'node-456'])
+        
+        # Assertions
+        assert result.exit_code != 0
+        assert "Failed to add chain" in result.output
+        mock_chain_manager.add_chain_to_node.assert_called_once_with('chain-123', 'node-456')
+
+    def test_add_chain_exception(self, runner, mock_config, mock_chain_manager):
+        """Test exception handling during chain addition"""
+        # Setup mock
+        mock_chain_manager.add_chain_to_node.side_effect = Exception("Connection error")
+        
+        # Run command
+        result = runner.invoke(chain, ['add', 'chain-123', 'node-456'])
+        
+        # Assertions
+        assert result.exit_code != 0
+        assert "Error adding chain to node: Connection error" in result.output
+        mock_chain_manager.add_chain_to_node.assert_called_once_with('chain-123', 'node-456')
+
+    def test_add_chain_missing_args(self, runner):
+        """Test command with missing arguments"""
+        # Missing node_id
+        result = runner.invoke(chain, ['add', 'chain-123'])
+        assert result.exit_code != 0
+        assert "Missing argument" in result.output
+
+        # Missing chain_id and node_id
+        result = runner.invoke(chain, ['add'])
+        assert result.exit_code != 0
+        assert "Missing argument" in result.output