```json
{
  "files": [
    "client.py"
  ],
  "edits": [
    {
      "file": "client.py",
      "description": "Update httpx.Client initialization to include a default timeout.",
      "change": "In the __init__ method, modify the httpx.Client instantiation to include a timeout parameter (e.g., timeout=10.0)."
    },
    {
      "file": "client.py",
      "description": "Add try-except block to get_data method to handle httpx.TimeoutException.",
      "change": "Wrap the self.client.get(endpoint) call in a try block. Catch httpx.TimeoutException and raise a custom exception or handle it gracefully without changing the method signature."
    }
  ],
  "tests": [
    {
      "name": "Test successful request",
      "description": "Verify that get_data returns expected JSON when the server responds within the timeout period."
    },
    {
      "name": "Test request timeout",
      "description": "Mock the httpx.Client.get method to raise httpx.TimeoutException and verify the wrapper handles it correctly."
    },
    {
      "name": "Verify signature integrity",
      "description": "Ensure that get_data still accepts only the 'endpoint' argument and does not require a timeout parameter."
    }
  ],
  "risks": [
    {
      "risk": "Global Timeout Constraint",
      "description": "A single default timeout applied to all requests via the client instance might be too short for long-running operations (e.g., large file uploads) or too long for high-frequency small requests."
    },
    {
      "risk": "Exception Masking",
      "description": "If the timeout exception is caught and returns a default value (like None) instead of raising an error, it might cause downstream failures that are harder to debug."
    }
  ]
}
```