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_blockchain.py

@@ -166,7 +166,7 @@ class TestBlockchainCommands:
         
         # Verify API call
         mock_client.get.assert_called_once_with(
-            'http://localhost:8082/status',
+            'http://localhost:8082/v1/health',
             timeout=5
         )