Standardizes communication between the Python bridge and Java plugin,
resolves test logic errors, and improves error handling to ensure
MCP bridge tests pass reliably.
Key changes:
- Standardized HTTP methods: Use GET for read operations and POST for all modification operations across the bridge and plugin.
- Fixed JSON parsing in Java plugin using Gson and added missing imports.
- Corrected error handling in Java plugin's `get_function` to return `success: false` when a function is not found.
- Updated Python bridge's `safe_get` to correctly propagate nested failure responses from the plugin.
- Fixed test client logic (`test_mcp_client.py`) to correctly extract function name/address from `list_functions` results.
- Added logging to `test_mcp_client.py` for easier debugging of mutating operations.
